1433 lines
73 KiB
JSON
1433 lines
73 KiB
JSON
[
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{
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"Name": "TestHintScope",
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"Cases": [
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{
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"SQL": "select /*+ SM_JOIN(t1) */ t1.a, t1.b from t t1, (select /*+ INL_JOIN(t3) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "MergeInnerJoin{TableReader(Table(t))->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ SM_JOIN(test.t1) */ t1.a, t1.b from t t1, (select /*+ INL_JOIN(test.t3) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "MergeInnerJoin{TableReader(Table(t))->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ SM_JOIN(t1) */ t1.a, t1.b from t t1, (select /*+ HASH_JOIN(t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "MergeInnerJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)->Sort}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ INL_JOIN(t1) */ t1.a, t1.b from t t1, (select /*+ HASH_JOIN(t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "IndexJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ INL_JOIN(test.t1) */ t1.a, t1.b from t t1, (select /*+ HASH_JOIN(test.t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "IndexJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ INL_JOIN(t1) */ t1.a, t1.b from t t1, (select /*+ SM_JOIN(t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "IndexJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ HASH_JOIN(t1) */ t1.a, t1.b from t t1, (select /*+ SM_JOIN(t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "RightHashJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ HASH_JOIN(test.t1) */ t1.a, t1.b from t t1, (select /*+ SM_JOIN(test.t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "RightHashJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ HASH_JOIN(t1) */ t1.a, t1.b from t t1, (select /*+ INL_JOIN(t2) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "RightHashJoin{TableReader(Table(t))->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.c,test.t.a)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ SM_JOIN(t1) */ t1.a, t1.b from t t1, (select t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "MergeInnerJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ INL_JOIN(t1) */ t1.a, t1.b from t t1, (select t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "IndexJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ HASH_JOIN(t1) */ t1.a, t1.b from t t1, (select t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
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"Best": "RightHashJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection"
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},
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{
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"SQL": "select /*+ HASH_JOIN(@sel_2 t1@sel_2, t2@sel_2), SM_JOIN(@sel_1 t1@sel_1, t2@sel_1) */ * from (select t1.a, t1.b from t t1, t t2 where t1.a = t2.a) t1, t t2 where t1.b = t2.b",
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"Best": "MergeInnerJoin{LeftHashJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)->Sort->TableReader(Table(t))->Sort}(test.t.b,test.t.b)->Projection"
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},
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{
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"SQL": "select /*+ STREAM_AGG() */ s, count(s) from (select /*+ HASH_AGG() */ sum(t1.a) as s from t t1, t t2 where t1.a = t2.b group by t1.a) p group by s",
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"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->Projection->HashAgg->Sort->StreamAgg->Projection"
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},
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{
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"SQL": "select /*+ HASH_AGG() */ s, count(s) from (select /*+ STREAM_AGG() */ sum(t1.a) as s from t t1, t t2 where t1.a = t2.b group by t1.a) p group by s",
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"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->Sort->Projection->StreamAgg->HashAgg->Projection"
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},
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{
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"SQL": "select /*+ HASH_AGG() */ s, count(s) from (select sum(t1.a) as s from t t1, t t2 where t1.a = t2.b group by t1.a) p group by s",
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"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->Projection->HashAgg->HashAgg->Projection"
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},
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{
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"SQL": "select /*+ STREAM_AGG() */ s, count(s) from (select sum(t1.a) as s from t t1, t t2 where t1.a = t2.b group by t1.a) p group by s",
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"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->Projection->HashAgg->Sort->StreamAgg->Projection"
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}
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]
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},
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{
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"Name": "TestIndexHint",
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"Cases": [
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{
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"SQL": "select /*+ USE_INDEX(t, c_d_e) */ * from t",
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"Best": "IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` `c_d_e`)"
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},
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{
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"SQL": "select /*+ USE_INDEX(test.t, c_d_e) */ * from t",
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"Best": "IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` `c_d_e`)"
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},
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{
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"SQL": "select /*+ IGNORE_INDEX(t, c_d_e) */ c from t order by c",
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"Best": "TableReader(Table(t))->Sort",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ IGNORE_INDEX(test.t, c_d_e) */ c from t order by c",
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"Best": "TableReader(Table(t))->Sort",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, c_d_e) */ * from t t1",
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"Best": "TableReader(Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t1` )"
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},
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{
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"SQL": "select /*+ IGNORE_INDEX(t, c_d_e) */ t1.c from t t1 order by t1.c",
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"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]])",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t1` `c_d_e`)"
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},
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{
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"SQL": "select /*+ USE_INDEX(t1, c_d_e) */ * from t t1",
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"Best": "IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t1` `c_d_e`)"
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},
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{
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"SQL": "select /*+ IGNORE_INDEX(t1, c_d_e) */ t1.c from t t1 order by t1.c",
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"Best": "TableReader(Table(t))->Sort",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t1` )"
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},
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{
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"SQL": "select /*+ USE_INDEX(t1, c_d_e), USE_INDEX(t2, f) */ * from t t1, t t2 where t1.a = t2.b",
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"Best": "LeftHashJoin{IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))->IndexLookUp(Index(t.f)[[NULL,+inf]], Table(t))}(test.t.a,test.t.b)",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t1` `c_d_e`), USE_INDEX(@`sel_1` `test`.`t2` `f`), HASH_JOIN(@`sel_1` `test`.`t1`)"
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},
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{
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"SQL": "select /*+ IGNORE_INDEX(t1, c_d_e), IGNORE_INDEX(t2, f), HASH_JOIN(t1) */ * from t t1, t t2 where t1.a = t2.b",
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"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.b)",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_1` `test`.`t2` ), HASH_JOIN(@`sel_1` `test`.`t1`)"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, c_d_e, f, g) */ * from t order by f",
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"Best": "IndexLookUp(Index(t.f)[[NULL,+inf]], Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` `f`)"
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},
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{
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"SQL": "select /*+ USE_INDEX(t) */ f from t where f > 10",
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"Best": "TableReader(Table(t)->Sel([gt(test.t.f, 10)]))",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, no_such_index) */ * from t",
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"Best": "TableReader(Table(t))",
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"HasWarn": true,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ IGNORE_INDEX(t, no_such_index) */ * from t",
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"Best": "TableReader(Table(t))",
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"HasWarn": true,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, c_d_e), IGNORE_INDEX(t, f) */ c from t order by c",
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"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]])",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` `c_d_e`)"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, f), IGNORE_INDEX(t, f) */ c from t order by c",
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"Best": "TableReader(Table(t))->Sort",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, c_d_e), IGNORE_INDEX(t, c_d_e) */ c from t order by c",
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"Best": "TableReader(Table(t))->Sort",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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},
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{
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"SQL": "select /*+ USE_INDEX(t, c_d_e, f), IGNORE_INDEX(t, c_d_e) */ c from t order by c",
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"Best": "IndexLookUp(Index(t.f)[[NULL,+inf]], Table(t))->Sort",
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"HasWarn": false,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` `f`)"
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}
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]
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},
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{
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"Name": "TestIndexMergeHint",
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"Cases": [
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{
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"SQL": "select /*+ USE_INDEX_MERGE(t, c_d_e, f_g) */ * from t where c < 1 or f > 2",
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"Best": "IndexMergeReader(PartialPlans->[Index(t.c_d_e)[[-inf,1)], Index(t.f_g)[(2,+inf]]], TablePlan->Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX_MERGE(@`sel_1` `t` `c_d_e`, `f_g`)"
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},
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{
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"SQL": "select /*+ USE_INDEX_MERGE(t, primary, f_g) */ * from t where a < 1 or f > 2",
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"Best": "IndexMergeReader(PartialPlans->[Table(t), Index(t.f_g)[(2,+inf]]], TablePlan->Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX_MERGE(@`sel_1` `t` `PRIMARY`, `f_g`)"
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},
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{
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"SQL": "select /*+ USE_INDEX_MERGE(t, primary, f_g, c_d_e) */ * from t where a < 1 or f > 2",
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"Best": "IndexMergeReader(PartialPlans->[Table(t), Index(t.f_g)[(2,+inf]]], TablePlan->Table(t))",
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"HasWarn": false,
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"Hints": "USE_INDEX_MERGE(@`sel_1` `t` `PRIMARY`, `f_g`)"
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},
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{
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"SQL": "select /*+ NO_INDEX_MERGE(), USE_INDEX_MERGE(t, primary, f_g, c_d_e) */ * from t where a < 1 or f > 2",
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"Best": "TableReader(Table(t)->Sel([or(lt(test.t.a, 1), gt(test.t.f, 2))]))",
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"HasWarn": true,
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"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
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}
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]
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},
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{
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"Name": "TestDAGPlanBuilderSimpleCase",
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"Cases": [
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{
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"SQL": "select * from t t1 use index(c_d_e)",
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"Best": "IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))"
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},
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{
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"SQL": "select f from t use index() where f = 1",
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"Best": "TableReader(Table(t)->Sel([eq(test.t.f, 1)]))"
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},
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{
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"SQL": "select a from t where a between 1 and 2 order by c",
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"Best": "TableReader(Table(t))->Sort->Projection"
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},
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{
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"SQL": "select * from t where (t.c > 0 and t.c < 2) or (t.c > 4 and t.c < 6) or (t.c > 8 and t.c < 10) or (t.c > 12 and t.c < 14) or (t.c > 16 and t.c < 18)",
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"Best": "IndexLookUp(Index(t.c_d_e)[(0,2) (4,6) (8,10) (12,14) (16,18)], Table(t))"
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},
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{
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"SQL": "select * from t where (t.c > 0 and t.c < 1) or (t.c > 2 and t.c < 3) or (t.c > 4 and t.c < 5) or (t.c > 6 and t.c < 7) or (t.c > 9 and t.c < 10)",
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"Best": "Dual"
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},
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{
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"SQL": "select * from t where t.c = 1 and t.e = 1 order by t.b limit 1",
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"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)]), Table(t))->TopN([test.t.b],0,1)"
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},
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{
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"SQL": "select * from t where t.e_str is null",
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"Best": "IndexLookUp(Index(t.e_d_c_str_prefix)[[NULL,NULL]], Table(t))"
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},
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{
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"SQL": "select * from t where t.c is null",
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"Best": "Dual"
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},
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{
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"SQL": "select * from t where t.c = 1 and t.e = 1 order by t.e limit 1",
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"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)]), Table(t))->TopN([test.t.e],0,1)"
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},
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{
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"SQL": "select * from t where t.c = 1 and t.e = 1 order by t.d limit 1",
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"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)])->Limit, Table(t))"
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},
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{
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"SQL": "select c from t where t.c = 1 and t.e = 1 order by t.d limit 1",
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"Best": "IndexReader(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)])->Limit)->Limit->Projection"
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},
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{
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"SQL": "select c from t order by t.a limit 1",
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"Best": "TableReader(Table(t)->Limit)->Limit->Projection"
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},
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{
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"SQL": "select c from t order by t.a + t.b limit 1",
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"Best": "TableReader(Table(t)->TopN([plus(test.t.a, test.t.b)],0,1))->Projection->TopN([Column#14],0,1)->Projection->Projection"
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},
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{
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"SQL": "select c from t limit 1",
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"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Limit)->Limit"
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},
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{
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"SQL": "select c from t where c = 1 limit 1",
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"Best": "IndexReader(Index(t.c_d_e)[[1,1]]->Limit)->Limit"
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},
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{
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"SQL": "select c from t where c = 1",
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"Best": "IndexReader(Index(t.c_d_e)[[1,1]])"
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},
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{
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"SQL": "select c from t order by c",
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"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]])"
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},
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{
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"SQL": "select c from t where c = 1 order by e",
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|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]])->Sort->Projection"
|
|
},
|
|
{
|
|
"SQL": "select c, b from t where c = 1 limit 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Limit, Table(t))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select c, b from t where c = 1 and e = 1 and b = 1 limit 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)]), Table(t)->Sel([eq(test.t.b, 1)])->Limit)->Limit->Projection"
|
|
},
|
|
{
|
|
"SQL": "select c from t where c = 1 order by d, c",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]])->Sort->Projection"
|
|
},
|
|
{
|
|
"SQL": "select c_str from t where e_str = '1' order by d_str, c_str",
|
|
"Best": "IndexLookUp(Index(t.e_d_c_str_prefix)[[\"1\",\"1\"]], Table(t))->Sort->Projection"
|
|
},
|
|
{
|
|
"SQL": "select c from t where t.c = 1 and t.a > 1 order by t.d limit 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]]->Sel([gt(test.t.a, 1)])->Limit)->Limit->Projection"
|
|
},
|
|
{
|
|
"SQL": "select c from t where t.c = 1 and t.d = 1 order by t.a limit 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1 1,1 1]])->TopN([test.t.a],0,1)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t where t.c = 1 and t.a > 1 order by t.d limit 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([gt(test.t.a, 1)])->Limit, Table(t))"
|
|
},
|
|
{
|
|
"SQL": "select * from t use index(e_d_c_str_prefix) where t.c_str = 'abcdefghijk' and t.d_str = 'd' and t.e_str = 'e'",
|
|
"Best": "IndexLookUp(Index(t.e_d_c_str_prefix)[[\"e\" \"d\" \"abcdefghij\",\"e\" \"d\" \"abcdefghij\"]], Table(t)->Sel([eq(test.t.c_str, abcdefghijk)]))"
|
|
},
|
|
{
|
|
"SQL": "select * from t use index(e_d_c_str_prefix) where t.e_str = b'1110000'",
|
|
"Best": "IndexLookUp(Index(t.e_d_c_str_prefix)[[\"p\",\"p\"]], Table(t))"
|
|
},
|
|
{
|
|
"SQL": "select * from (select * from t use index() order by b) t left join t t1 on t.a=t1.a limit 10",
|
|
"Best": "IndexMergeJoin{TableReader(Table(t)->TopN([test.t.b],0,10))->TopN([test.t.b],0,10)->TableReader(Table(t))}(test.t.a,test.t.a)->Limit"
|
|
},
|
|
{
|
|
"SQL": "select * from ((SELECT 1 a,3 b) UNION (SELECT 2,1) ORDER BY (SELECT 2)) t order by a,b",
|
|
"Best": "UnionAll{Dual->Projection->Dual->Projection}->HashAgg->Sort"
|
|
},
|
|
{
|
|
"SQL": "select * from ((SELECT 1 a,6 b) UNION (SELECT 2,5) UNION (SELECT 2, 4) ORDER BY 1) t order by 1, 2",
|
|
"Best": "UnionAll{Dual->Projection->Dual->Projection->Dual->Projection}->HashAgg->Sort->Sort"
|
|
},
|
|
{
|
|
"SQL": "select * from (select *, NULL as xxx from t) t order by xxx",
|
|
"Best": "TableReader(Table(t))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t use index(f) where f = 1 and a = 1",
|
|
"Best": "IndexLookUp(Index(t.f)[[1,1]]->Sel([eq(test.t.a, 1)]), Table(t))"
|
|
},
|
|
{
|
|
"SQL": "select * from t2 use index(b) where b = 1 and a = 1",
|
|
"Best": "IndexLookUp(Index(t2.b)[[1,1]]->Sel([eq(test.t2.a, 1)]), Table(t2))"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderJoin",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.a = t2.c_str",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->Projection->TableReader(Table(t))->Projection}(Column#25,Column#26)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.b = t2.a",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.b,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.a = t2.a join t t3 on t1.a = t3.a",
|
|
"Best": "LeftHashJoin{MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.a = t2.a join t t3 on t1.b = t3.a",
|
|
"Best": "LeftHashJoin{MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.b,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.b = t2.a order by t1.a",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.b,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.b = t2.a order by t1.a limit 1",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.b,test.t.a)->Limit"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_HJ(t1, t2) */ * from t t1 join t t2 on t1.b = t2.a order by t1.a limit 1",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.b,test.t.a)->TopN([test.t.a],0,1)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 left join t t2 on t1.b = t2.a where 1 = 1 limit 1",
|
|
"Best": "IndexMergeJoin{TableReader(Table(t)->Limit)->Limit->TableReader(Table(t))}(test.t.b,test.t.a)->Limit"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.b = t2.a and t1.c = 1 and t1.d = 1 and t1.e = 1 order by t1.a limit 1",
|
|
"Best": "IndexMergeJoin{IndexLookUp(Index(t.c_d_e)[[1 1 1,1 1 1]], Table(t))->TableReader(Table(t))}(test.t.b,test.t.a)->TopN([test.t.a],0,1)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.b = t2.b join t t3 on t1.b = t3.b",
|
|
"Best": "LeftHashJoin{LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.b,test.t.b)->TableReader(Table(t))}(test.t.b,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.a = t2.a order by t1.a",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 left outer join t t2 on t1.a = t2.a right outer join t t3 on t1.a = t3.a",
|
|
"Best": "RightHashJoin{MergeLeftOuterJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 join t t2 on t1.a = t2.a join t t3 on t1.a = t3.a and t1.b = 1 and t3.c = 1",
|
|
"Best": "IndexMergeJoin{IndexMergeJoin{TableReader(Table(t)->Sel([eq(test.t.b, 1)]))->IndexLookUp(Index(t.c_d_e)[[1,1]], Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t where t.c in (select b from t s where s.a = t.a)",
|
|
"Best": "MergeSemiJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select t.c in (select b from t s where s.a = t.a) from t",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.c_d_e)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.a)(test.t.c,test.t.b)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2)*/ * from t t1, t t2 where t1.a = t2.b",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))->Sort}(test.t.a,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2)*/ * from t t1, t t2 where t1.a = t2.a",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2)*/ * from t t1, t t2 where t1.a = t2.a order by t2.a",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2)*/ * from t t1, t t2 where t1.b = t2.b order by t2.a",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->Sort->TableReader(Table(t))->Sort}(test.t.b,test.t.b)->Sort"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2)*/ * from t t1, t t2 where t1.a = t2.a order by t2.a desc",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2)*/ * from t t1, t t2 where t1.b = t2.b order by t2.b desc",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->Sort->TableReader(Table(t))->Sort}(test.t.b,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2,t3)*/ * from t t1, t t2, t t3 where t1.a = t2.a and t2.a = t3.a",
|
|
"Best": "MergeInnerJoin{MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2,t3)*/ * from t t1, t t2, t t3 where t1.a = t2.b and t2.a = t3.b",
|
|
"Best": "MergeInnerJoin{MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))->Sort}(test.t.a,test.t.b)->Sort->TableReader(Table(t))->Sort}(test.t.a,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2,t3)*/ * from t t1, t t2, t t3 where t1.c = t2.c and t1.d = t2.d and t3.c = t1.c and t3.d = t1.d",
|
|
"Best": "MergeInnerJoin{MergeInnerJoin{IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)(test.t.d,test.t.d)->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)(test.t.d,test.t.d)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2,t3)*/ * from t t1, t t2, t t3 where t1.c = t2.c and t1.d = t2.d and t3.c = t1.c and t3.d = t1.d order by t1.c",
|
|
"Best": "MergeInnerJoin{MergeInnerJoin{IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)(test.t.d,test.t.d)->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)(test.t.d,test.t.d)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2,t3)*/ * from t t1 left outer join t t2 on t1.a = t2.a left outer join t t3 on t2.a = t3.a",
|
|
"Best": "MergeLeftOuterJoin{MergeLeftOuterJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_SMJ(t1,t2,t3)*/ * from t t1 left outer join t t2 on t1.a = t2.a left outer join t t3 on t1.a = t3.a",
|
|
"Best": "MergeLeftOuterJoin{MergeLeftOuterJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1, t2) */ * from t t1, t t2 where t1.a = t2.a",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1, t t2 where t1.a = t2.c",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.a,test.t.c)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ t1.a , t2.a from t t1, t t2 where t1.a = t2.c",
|
|
"Best": "IndexJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1, t2) */ t1.a, t2.a from t t1, t t2 where t1.a = t2.a order by t1.c",
|
|
"Best": "IndexJoin{IndexReader(Index(t.c_d_e)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1, t2) */ t1.a, t2.a from t t1, t t2 where t1.a = t2.a order by t2.c",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1) */ t1.a , t2.a from t t1, t t2 where t1.a = t2.c",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.c,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1, t2) */ * from t t1 left outer join t t2 on t1.a = t2.a and t2.b < 1",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t)->Sel([lt(test.t.b, 1)]))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1, t2) */ * from t t1 join t t2 on t1.d=t2.d and t2.c = 1",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.d,test.t.d)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1, t2) */ * from t t1 left outer join t t2 on t1.a = t2.b",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 right outer join t t2 on t1.a = t2.b",
|
|
"Best": "RightHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 where t1.a in (select a from t t2)",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1) */ * from t t1 where t1.a in (select a from t t2)",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.c=t2.c and t1.f=t2.f",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.a = t2.a and t1.f=t2.f",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.f=t2.f and t1.a=t2.a",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.a=t2.a and t2.a in (1, 2)",
|
|
"Best": "IndexJoin{TableReader(Table(t))->TableReader(Table(t)->Sel([in(test.t.a, 1, 2)]))}(test.t.a,test.t.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.b=t2.c and t1.b=1 and t2.d > t1.d-10 and t2.d < t1.d+10",
|
|
"Best": "IndexJoin{TableReader(Table(t)->Sel([eq(test.t.b, 1)]))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.b=t2.b and t1.c=1 and t2.c=1 and t2.d > t1.d-10 and t2.d < t1.d+10",
|
|
"Best": "LeftHashJoin{IndexLookUp(Index(t.c_d_e)[[1,1]], Table(t))->IndexLookUp(Index(t.c_d_e)[[1,1]], Table(t))}(test.t.b,test.t.b)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t2.c > t1.d-10 and t2.c < t1.d+10",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t1.b = t2.c and t2.c=1 and t2.d=2 and t2.e=4",
|
|
"Best": "LeftHashJoin{TableReader(Table(t)->Sel([eq(test.t.b, 1)]))->IndexLookUp(Index(t.c_d_e)[[1 2 4,1 2 4]], Table(t))}"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ * from t t1 join t t2 where t2.c=1 and t2.d=1 and t2.e > 10 and t2.e < 20",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->IndexLookUp(Index(t.c_d_e)[(1 1 10,1 1 20)], Table(t))}"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderSubquery",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select * from t where exists (select s.a from t s having sum(s.a) = t.a )",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->Projection->IndexReader(Index(t.f)[[NULL,+inf]]->StreamAgg)->StreamAgg}(Column#27,Column#25)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t where exists (select s.a from t s having sum(s.a) = t.a ) order by t.a",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->Projection->IndexReader(Index(t.f)[[NULL,+inf]]->StreamAgg)->StreamAgg}(Column#27,Column#25)->Projection->Sort"
|
|
},
|
|
{
|
|
"SQL": "select * from t where a in (select s.a from t s) order by t.a",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t where exists (select s.a from t s where s.c in (select c from t as k where k.d = s.d) having sum(s.a) = t.a )",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->Projection->MergeSemiJoin{IndexReader(Index(t.c_d_e)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.c,test.t.c)(test.t.d,test.t.d)->Projection->StreamAgg}(Column#39,Column#37)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select * from t where a in (select a from t) order by b",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)->Projection->Sort"
|
|
},
|
|
{
|
|
"SQL": "select t.c in (select count(*) from t s, t t1 where s.a = t.a and s.a = t1.a) from t",
|
|
"Best": "Apply{IndexReader(Index(t.c_d_e)[[NULL,+inf]])->MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->StreamAgg}->Projection"
|
|
},
|
|
{
|
|
"SQL": "select (select count(*) from t s, t t1 where s.a = t.a and s.a = t1.a) from t",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)->HashAgg}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select (select count(*) from t s, t t1 where s.a = t.a and s.a = t1.a) from t order by t.a",
|
|
"Best": "MergeLeftOuterJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->StreamAgg}(test.t.a,test.t.a)->Projection->Projection"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanTopN",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select * from t t1 left join t t2 on t1.b = t2.b left join t t3 on t2.b = t3.b order by t1.a limit 1",
|
|
"Best": "LeftHashJoin{LeftHashJoin{TableReader(Table(t)->Limit)->Limit->TableReader(Table(t))}(test.t.b,test.t.b)->TopN([test.t.a],0,1)->TableReader(Table(t))}(test.t.b,test.t.b)->TopN([test.t.a],0,1)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 left join t t2 on t1.b = t2.b left join t t3 on t2.b = t3.b order by t1.b limit 1",
|
|
"Best": "LeftHashJoin{LeftHashJoin{TableReader(Table(t)->TopN([test.t.b],0,1))->TopN([test.t.b],0,1)->TableReader(Table(t))}(test.t.b,test.t.b)->TopN([test.t.b],0,1)->TableReader(Table(t))}(test.t.b,test.t.b)->TopN([test.t.b],0,1)"
|
|
},
|
|
{
|
|
"SQL": "select * from t t1 left join t t2 on t1.b = t2.b left join t t3 on t2.b = t3.b limit 1",
|
|
"Best": "LeftHashJoin{LeftHashJoin{TableReader(Table(t)->Limit)->Limit->TableReader(Table(t))}(test.t.b,test.t.b)->Limit->TableReader(Table(t))}(test.t.b,test.t.b)->Limit"
|
|
},
|
|
{
|
|
"SQL": "select * from t where b = 1 and c = 1 order by c limit 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]], Table(t)->Sel([eq(test.t.b, 1)]))->Limit"
|
|
},
|
|
{
|
|
"SQL": "select * from t where c = 1 order by c limit 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Limit, Table(t))"
|
|
},
|
|
{
|
|
"SQL": "select * from t order by a limit 1",
|
|
"Best": "TableReader(Table(t)->Limit)->Limit"
|
|
},
|
|
{
|
|
"SQL": "select c from t order by c limit 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Limit)->Limit"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderBasePhysicalPlan",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select * from t order by b limit 1 for update",
|
|
"Best": "TableReader(Table(t))->Lock->TopN([test.t.b],0,1)",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t` )"
|
|
},
|
|
{
|
|
"SQL": "update t set a = 5 where b < 1 order by d limit 1",
|
|
"Best": "TableReader(Table(t)->Sel([lt(test.t.b, 1)])->TopN([test.t.d],0,1))->TopN([test.t.d],0,1)->Update",
|
|
"Hints": "USE_INDEX(@`upd_1` `test`.`t` )"
|
|
},
|
|
{
|
|
"SQL": "update t set a = 5",
|
|
"Best": "TableReader(Table(t))->Update",
|
|
"Hints": "USE_INDEX(@`upd_1` `test`.`t` )"
|
|
},
|
|
{
|
|
"SQL": "delete /*+ TIDB_INLJ(t1, t2) */ t1 from t t1, t t2 where t1.c=t2.c",
|
|
"Best": "IndexJoin{TableReader(Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)->Delete",
|
|
"Hints": "USE_INDEX(@`del_1` `test`.`t1` ), USE_INDEX(@`del_1` `test`.`t2` `c_d_e`), INL_JOIN(@`del_1` `test`.`t2`)"
|
|
},
|
|
{
|
|
"SQL": "delete /*+ TIDB_SMJ(t1, t2) */ from t1 using t t1, t t2 where t1.c=t2.c",
|
|
"Best": "MergeInnerJoin{IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))->IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t))}(test.t.c,test.t.c)->Delete",
|
|
"Hints": "USE_INDEX(@`del_1` `test`.`t1` `c_d_e`), USE_INDEX(@`del_1` `test`.`t2` `c_d_e`), SM_JOIN(@`del_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "update /*+ TIDB_SMJ(t1, t2) */ t t1, t t2 set t1.a=1, t2.a=1 where t1.a=t2.a",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->Update",
|
|
"Hints": "USE_INDEX(@`upd_1` `test`.`t1` ), USE_INDEX(@`upd_1` `test`.`t2` ), SM_JOIN(@`upd_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "update /*+ TIDB_HJ(t1, t2) */ t t1, t t2 set t1.a=1, t2.a=1 where t1.a=t2.a",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->Update",
|
|
"Hints": "USE_INDEX(@`upd_1` `test`.`t1` ), USE_INDEX(@`upd_1` `test`.`t2` ), HASH_JOIN(@`upd_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "delete from t where b < 1 order by d limit 1",
|
|
"Best": "TableReader(Table(t)->Sel([lt(test.t.b, 1)])->TopN([test.t.d],0,1))->TopN([test.t.d],0,1)->Delete",
|
|
"Hints": "USE_INDEX(@`del_1` `test`.`t` )"
|
|
},
|
|
{
|
|
"SQL": "delete from t",
|
|
"Best": "TableReader(Table(t))->Delete",
|
|
"Hints": "USE_INDEX(@`del_1` `test`.`t` )"
|
|
},
|
|
{
|
|
"SQL": "delete from t use index(c_d_e) where b = 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[NULL,+inf]], Table(t)->Sel([eq(test.t.b, 1)]))->Delete",
|
|
"Hints": "USE_INDEX(@`del_1` `test`.`t` `c_d_e`)"
|
|
},
|
|
{
|
|
"SQL": "insert into t select * from t where b < 1 order by d limit 1",
|
|
"Best": "TableReader(Table(t)->Sel([lt(test.t.b, 1)])->TopN([test.t.d],0,1))->TopN([test.t.d],0,1)->Insert",
|
|
"Hints": ""
|
|
},
|
|
{
|
|
"SQL": "insert into t (a, b, c, e, f, g) values(0,0,0,0,0,0)",
|
|
"Best": "Insert",
|
|
"Hints": ""
|
|
},
|
|
{
|
|
"SQL": "select 1",
|
|
"Best": "Dual->Projection",
|
|
"Hints": ""
|
|
},
|
|
{
|
|
"SQL": "select * from t where false",
|
|
"Best": "Dual",
|
|
"Hints": ""
|
|
},
|
|
{
|
|
"SQL": "show tables",
|
|
"Best": "Show",
|
|
"Hints": ""
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderUnion",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select * from t union all select * from t",
|
|
"Best": "UnionAll{TableReader(Table(t))->TableReader(Table(t))}"
|
|
},
|
|
{
|
|
"SQL": "select * from t union all (select * from t) order by a ",
|
|
"Best": "UnionAll{TableReader(Table(t))->TableReader(Table(t))}->Sort"
|
|
},
|
|
{
|
|
"SQL": "select * from t union all (select * from t) limit 1",
|
|
"Best": "UnionAll{TableReader(Table(t)->Limit)->Limit->TableReader(Table(t)->Limit)->Limit}->Limit"
|
|
},
|
|
{
|
|
"SQL": "select a from t union all (select c from t) order by a limit 1",
|
|
"Best": "UnionAll{TableReader(Table(t)->Limit)->Limit->IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Limit)->Limit}->TopN([Column#25],0,1)"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderUnionScan",
|
|
"Cases": null
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderAgg",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select distinct b from t",
|
|
"Best": "TableReader(Table(t))->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from (select * from t order by b) t group by b",
|
|
"Best": "TableReader(Table(t))->Sort->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select count(*), x from (select b as bbb, a + 1 as x from (select * from t order by b) t) t group by bbb",
|
|
"Best": "TableReader(Table(t))->Sort->Projection->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(a), avg(b + c) from t group by d",
|
|
"Best": "TableReader(Table(t)->HashAgg)->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(distinct a), avg(b + c) from t group by d",
|
|
"Best": "TableReader(Table(t))->Projection->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(e), avg(e + c) from t where c = 1 group by (c + d)",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]]->HashAgg)->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(e), avg(e + c) from t where c = 1 group by c",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]]->StreamAgg)->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(e), avg(e + c) from t where c = 1 group by e",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]]->HashAgg)->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(e), avg(b + c) from t where c = 1 and e = 1 group by d",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)]), Table(t))->Projection->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(e), avg(b + c) from t where c = 1 and b = 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]], Table(t)->Sel([eq(test.t.b, 1)]))->Projection->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select sum(e) as k, avg(b + c) from t where c = 1 and b = 1 and e = 1 group by d order by k",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)]), Table(t)->Sel([eq(test.t.b, 1)]))->Projection->Projection->StreamAgg->Sort"
|
|
},
|
|
{
|
|
"SQL": "select sum(e) as k, avg(b + c) from t where c = 1 and b = 1 and e = 1 group by c order by k",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,1]]->Sel([eq(test.t.e, 1)]), Table(t)->Sel([eq(test.t.b, 1)]))->Projection->Projection->StreamAgg->Sort"
|
|
},
|
|
{
|
|
"SQL": "select sum(to_base64(e)) from t where c = 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]])->Projection->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select (select count(1) k from t s where s.a = t.a having k != 0) from t",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]]->Sel([1]))->Projection}(test.t.a,test.t.a)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select sum(to_base64(e)) from t group by e,d,c order by c",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]])->Projection->StreamAgg->Projection"
|
|
},
|
|
{
|
|
"SQL": "select sum(e+1) from t group by e,d,c order by c",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->StreamAgg)->StreamAgg->Projection"
|
|
},
|
|
{
|
|
"SQL": "select sum(to_base64(e)) from t group by e,d,c order by c,e",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]])->Projection->StreamAgg->Sort->Projection"
|
|
},
|
|
{
|
|
"SQL": "select sum(e+1) from t group by e,d,c order by c,e",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->StreamAgg)->StreamAgg->Sort->Projection"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by g order by g limit 10",
|
|
"Best": "IndexReader(Index(t.g)[[NULL,+inf]]->StreamAgg)->StreamAgg->Limit->Projection"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by g limit 10",
|
|
"Best": "IndexReader(Index(t.g)[[NULL,+inf]]->StreamAgg)->StreamAgg->Limit"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by g order by g",
|
|
"Best": "IndexReader(Index(t.g)[[NULL,+inf]]->StreamAgg)->StreamAgg->Projection"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by g order by g desc limit 1",
|
|
"Best": "IndexReader(Index(t.g)[[NULL,+inf]]->StreamAgg)->StreamAgg->Limit->Projection"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by b order by b limit 10",
|
|
"Best": "TableReader(Table(t)->HashAgg)->HashAgg->TopN([test.t.b],0,10)->Projection"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by b order by b",
|
|
"Best": "TableReader(Table(t)->HashAgg)->HashAgg->Sort->Projection"
|
|
},
|
|
{
|
|
"SQL": "select count(*) from t group by b limit 10",
|
|
"Best": "TableReader(Table(t)->HashAgg)->HashAgg->Limit"
|
|
},
|
|
{
|
|
"SQL": "select sum(a.g), sum(b.g) from t a join t b on a.g = b.g group by a.g",
|
|
"Best": "MergeInnerJoin{IndexReader(Index(t.g)[[NULL,+inf]])->IndexReader(Index(t.g)[[NULL,+inf]])}(test.t.g,test.t.g)->Projection->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select /*+ tidb_inlj(a,b) */ sum(a.g), sum(b.g) from t a join t b on a.g = b.g and a.g > 60 group by a.g order by a.g limit 1",
|
|
"Best": "IndexJoin{IndexReader(Index(t.g)[(60,+inf]])->IndexReader(Index(t.g)[[NULL,+inf]]->Sel([gt(test.t.g, 60)]))}(test.t.g,test.t.g)->Projection->StreamAgg->Limit->Projection"
|
|
},
|
|
{
|
|
"SQL": "select sum(a.g), sum(b.g) from t a join t b on a.g = b.g and a.a>5 group by a.g order by a.g limit 1",
|
|
"Best": "MergeInnerJoin{IndexReader(Index(t.g)[[NULL,+inf]]->Sel([gt(test.t.a, 5)]))->IndexReader(Index(t.g)[[NULL,+inf]])}(test.t.g,test.t.g)->Projection->StreamAgg->Limit->Projection"
|
|
},
|
|
{
|
|
"SQL": "select sum(d) from t",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->StreamAgg)->StreamAgg"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestRefine",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select a from t where c is not null",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c >= 4",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[4,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c <= 4",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,4]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 4 and d = 5 and e = 6",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[4 5 6,4 5 6]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where d = 4 and c = 5",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[5 4,5 4]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 4 and e < 5",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[4,4]]->Sel([lt(test.t.e, 5)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 4 and d <= 5 and d > 3",
|
|
"Best": "IndexReader(Index(t.c_d_e)[(4 3,4 5]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where d <= 5 and d > 3",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Sel([le(test.t.d, 5) gt(test.t.d, 3)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c between 1 and 2",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,2]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c not between 1 and 2",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,1) (2,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c <= 5 and c >= 3 and d = 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[3,5]]->Sel([eq(test.t.d, 1)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 1 or c = 2 or c = 3",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,3]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select b from t where c = 1 or c = 2 or c = 3 or c = 4 or c = 5",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[1,5]], Table(t))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 5",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[5,5]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 5 and b = 1",
|
|
"Best": "IndexLookUp(Index(t.c_d_e)[[5,5]], Table(t)->Sel([eq(test.t.b, 1)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where not a",
|
|
"Best": "IndexReader(Index(t.f)[[NULL,+inf]]->Sel([not(test.t.a)]))"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in (1)",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in ('1')",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 1.0",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in (1) and d > 3",
|
|
"Best": "IndexReader(Index(t.c_d_e)[(1 3,1 +inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in (1, 2, 3) and (d > 3 and d < 4 or d > 5 and d < 6)",
|
|
"Best": "Dual->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in (1, 2, 3) and (d > 2 and d < 4 or d > 5 and d < 7)",
|
|
"Best": "IndexReader(Index(t.c_d_e)[(1 2,1 4) (1 5,1 7) (2 2,2 4) (2 5,2 7) (3 2,3 4) (3 5,3 7)])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in (1, 2, 3)",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1,1] [2,2] [3,3]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c in (1, 2, 3) and d in (1,2) and e = 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[1 1 1,1 1 1] [1 2 1,1 2 1] [2 1 1,2 1 1] [2 2 1,2 2 1] [3 1 1,3 1 1] [3 2 1,3 2 1]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where d in (1, 2, 3)",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Sel([in(test.t.d, 1, 2, 3)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c not in (1)",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,1) (1,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t use index(c_d_e) where c != 1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,1) (1,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like ''",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"\",\"\"]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc\",\"abc\"]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str not like 'abc'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[-inf,\"abc\") (\"abc\",+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where not (c_str like 'abc' or c_str like 'abd')",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[-inf,\"abc\") (\"abc\",\"abd\") (\"abd\",+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like '_abc'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[NULL,+inf]]->Sel([like(test.t.c_str, _abc, 92)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc%'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc\",\"abd\")])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc_'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[(\"abc\",\"abd\")]->Sel([like(test.t.c_str, abc_, 92)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc%af'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc\",\"abd\")]->Sel([like(test.t.c_str, abc%af, 92)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc\\_' escape ''",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc_\",\"abc_\"]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc\\_'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc_\",\"abc_\"]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc\\\\_'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc_\",\"abc_\"]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc\\_%'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc_\",\"abc`\")])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc=_%' escape '='",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"abc_\",\"abc`\")])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 'abc\\__'",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[(\"abc_\",\"abc`\")]->Sel([like(test.t.c_str, abc\\__, 92)]))->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c_str like 123",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[\"123\",\"123\"]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 1.9 and d > 3",
|
|
"Best": "Dual"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c < 1.1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,2)])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c <= 1.9",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[-inf,1]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c >= 1.1",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[2,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c > 1.9",
|
|
"Best": "IndexReader(Index(t.c_d_e)[(1,+inf]])->Projection"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 123456789098765432101234",
|
|
"Best": "Dual"
|
|
},
|
|
{
|
|
"SQL": "select a from t where c = 'hanfei'",
|
|
"Best": "IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Sel([eq(cast(test.t.c), cast(hanfei))]))->Projection"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestAggEliminator",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select max(a) from t;",
|
|
"Best": "TableReader(Table(t)->Limit)->Limit->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select min(a) from t;",
|
|
"Best": "TableReader(Table(t)->Limit)->Limit->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select min(c_str) from t;",
|
|
"Best": "IndexReader(Index(t.c_d_e_str)[[-inf,+inf]]->Limit)->Limit->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a), b from t;",
|
|
"Best": "TableReader(Table(t)->StreamAgg)->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a+1) from t;",
|
|
"Best": "IndexReader(Index(t.f)[[NULL,+inf]]->Sel([not(isnull(plus(test.t.a, 1)))])->TopN([plus(test.t.a, 1) true],0,1))->Projection->TopN([Column#40 true],0,1)->Projection->Projection->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a), min(a) from t;",
|
|
"Best": "LeftHashJoin{TableReader(Table(t)->Limit)->Limit->StreamAgg->TableReader(Table(t)->Limit)->Limit->StreamAgg}"
|
|
},
|
|
{
|
|
"SQL": "select max(a), min(a) from t where a > 10",
|
|
"Best": "LeftHashJoin{TableReader(Table(t)->Limit)->Limit->StreamAgg->TableReader(Table(t)->Limit)->Limit->StreamAgg}"
|
|
},
|
|
{
|
|
"SQL": "select max(d), min(d) from t where c = 1 and d > 10",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.c_d_e)[(1 10,1 +inf]]->Limit)->Limit->StreamAgg->IndexReader(Index(t.c_d_e)[(1 10,1 +inf]]->Limit)->Limit->StreamAgg}"
|
|
},
|
|
{
|
|
"SQL": "select max(a), max(c), min(f) from t",
|
|
"Best": "LeftHashJoin{LeftHashJoin{TableReader(Table(t)->Limit)->Limit->StreamAgg->IndexReader(Index(t.c_d_e)[[NULL,+inf]]->Limit)->Limit->StreamAgg}->IndexReader(Index(t.f)[[NULL,+inf]]->Limit)->Limit->StreamAgg}"
|
|
},
|
|
{
|
|
"SQL": "select max(a), max(b) from t",
|
|
"Best": "TableReader(Table(t)->StreamAgg)->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a), max(c) from t where c > 10",
|
|
"Best": "IndexReader(Index(t.c_d_e)[(10,+inf]]->StreamAgg)->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a), min(a) from t where a * 3 + 10 < 100",
|
|
"Best": "IndexReader(Index(t.f)[[NULL,+inf]]->Sel([lt(plus(mul(test.t.a, 3), 10), 100)])->StreamAgg)->StreamAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a) from t group by b;",
|
|
"Best": "TableReader(Table(t)->HashAgg)->HashAgg"
|
|
},
|
|
{
|
|
"SQL": "select max(a) from (select t1.a from t t1 join t t2 on t1.a=t2.a) t",
|
|
"Best": "MergeInnerJoin{TableReader(Table(t))->TableReader(Table(t))}(test.t.a,test.t.a)->Limit->StreamAgg"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestUnmatchedTableInHint",
|
|
"Cases": [
|
|
{
|
|
"SQL": "SELECT /*+ TIDB_SMJ(t3, t4) */ * from t t1, t t2 where t1.a = t2.a",
|
|
"Warning": "[planner:1815]There are no matching table names for (t3, t4) in optimizer hint /*+ SM_JOIN(t3, t4) */ or /*+ TIDB_SMJ(t3, t4) */. Maybe you can use the table alias name"
|
|
},
|
|
{
|
|
"SQL": "SELECT /*+ TIDB_HJ(t3, t4) */ * from t t1, t t2 where t1.a = t2.a",
|
|
"Warning": "[planner:1815]There are no matching table names for (t3, t4) in optimizer hint /*+ HASH_JOIN(t3, t4) */ or /*+ TIDB_HJ(t3, t4) */. Maybe you can use the table alias name"
|
|
},
|
|
{
|
|
"SQL": "SELECT /*+ TIDB_INLJ(t3, t4) */ * from t t1, t t2 where t1.a = t2.a",
|
|
"Warning": "[planner:1815]There are no matching table names for (t3, t4) in optimizer hint /*+ INL_JOIN(t3, t4) */ or /*+ TIDB_INLJ(t3, t4) */. Maybe you can use the table alias name"
|
|
},
|
|
{
|
|
"SQL": "SELECT /*+ TIDB_SMJ(t1, t2) */ * from t t1, t t2 where t1.a = t2.a",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "SELECT /*+ TIDB_SMJ(t3, t4) */ * from t t1, t t2, t t3 where t1.a = t2.a and t2.a = t3.a",
|
|
"Warning": "[planner:1815]There are no matching table names for (t4) in optimizer hint /*+ SM_JOIN(t3, t4) */ or /*+ TIDB_SMJ(t3, t4) */. Maybe you can use the table alias name"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestJoinHints",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1) */ t1.a, t2.a, t3.a from t t1, t t2, t t3 where t1.a = t2.a and t2.a = t3.a;",
|
|
"Best": "RightHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)}(test.t.a,test.t.a)->Projection",
|
|
"Warning": "",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t3` `f`), USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_1` `test`.`t2` `f`), INL_JOIN(@`sel_1` `test`.`t1`), HASH_JOIN(@`sel_1` `test`.`t3`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(test.t1) */ t1.a, t2.a, t3.a from t t1, t t2, t t3 where t1.a = t2.a and t2.a = t3.a;",
|
|
"Best": "RightHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)}(test.t.a,test.t.a)->Projection",
|
|
"Warning": "",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t3` `f`), USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_1` `test`.`t2` `f`), INL_JOIN(@`sel_1` `test`.`t1`), HASH_JOIN(@`sel_1` `test`.`t3`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t1) */ t1.b, t2.a from t t1, t t2 where t1.b = t2.a;",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.b,test.t.a)",
|
|
"Warning": "[planner:1815]Optimizer Hint /*+ INL_JOIN(t1) */ or /*+ TIDB_INLJ(t1) */ is inapplicable",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_1` `test`.`t2` `f`), HASH_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ TIDB_INLJ(t2) */ t1.b, t2.a from t2 t1, t2 t2 where t1.b=t2.b and t2.c=-1;",
|
|
"Best": "IndexJoin{IndexReader(Index(t2.b)[[NULL,+inf]])->TableReader(Table(t2)->Sel([eq(test.t2.c, -1)]))}(test.t2.b,test.t2.b)->Projection",
|
|
"Warning": "[planner:1815]Optimizer Hint /*+ INL_JOIN(t2) */ or /*+ TIDB_INLJ(t2) */ is inapplicable",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` `b`), USE_INDEX(@`sel_1` `test`.`t2` ), INL_JOIN(@`sel_1` `test`.`t1`)"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestAggregationHints",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select count(*) from t t1, t t2 where t1.a = t2.b",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->StreamAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select count(t1.a) from t t1, t t2 where t1.a = t2.a*2 group by t1.a",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]])->Projection}(test.t.a,Column#26)->HashAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_AGG() */ count(*) from t t1, t t2 where t1.a = t2.b",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->HashAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ STREAM_AGG() */ count(t1.a) from t t1, t t2 where t1.a = t2.a*2 group by t1.a",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]])->Projection}(test.t.a,Column#26)->Sort->StreamAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_AGG() STREAM_AGG() */ count(*) from t t1, t t2 where t1.a = t2.b",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))}(test.t.a,test.t.b)->StreamAgg",
|
|
"Warning": "[planner:1815]Optimizer aggregation hints are conflicted"
|
|
},
|
|
{
|
|
"SQL": "select /*+ STREAM_AGG() */ distinct a from t",
|
|
"Best": "TableReader(Table(t))->StreamAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_AGG() */ t1.a from t t1 where t1.a < any(select t2.b from t t2)",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]]->Sel([if(isnull(test.t.a), <nil>, 1)]))->TableReader(Table(t)->HashAgg)->HashAgg->Sel([ne(Column#27, 0)])}->Projection",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ hash_agg() */ t1.a from t t1 where t1.a != any(select t2.b from t t2)",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]]->Sel([if(isnull(test.t.a), <nil>, 1)]))->TableReader(Table(t))->Projection->HashAgg->Sel([ne(Column#28, 0)])}->Projection",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ hash_agg() */ t1.a from t t1 where t1.a = all(select t2.b from t t2)",
|
|
"Best": "LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->TableReader(Table(t))->Projection->HashAgg}->Projection",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ STREAM_AGG() */ sum(t1.a) from t t1 join t t2 on t1.b = t2.b group by t1.b",
|
|
"Best": "LeftHashJoin{TableReader(Table(t))->TableReader(Table(t))->Sort->Projection->StreamAgg}(test.t.b,test.t.b)->HashAgg",
|
|
"Warning": "[planner:1815]Optimizer Hint STREAM_AGG is inapplicable"
|
|
},
|
|
{
|
|
"SQL": "select /*+ STREAM_AGG() */ e, sum(b) from t group by e",
|
|
"Best": "TableReader(Table(t))->Sort->Projection->StreamAgg->Projection",
|
|
"Warning": ""
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestQueryBlockHint",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select /*+ SM_JOIN(@sel_1 t1), INL_JOIN(@sel_2 t3) */ t1.a, t1.b from t t1, (select t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
|
|
"Plan": "MergeInnerJoin{TableReader(Table(t))->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` ), USE_INDEX(@`sel_2` `test`.`t3` `c_d_e`), INL_JOIN(@`sel_2` `test`.`t3`), SM_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ SM_JOIN(@sel_1 t1), INL_JOIN(@qb t3) */ t1.a, t1.b from t t1, (select /*+ QB_NAME(qb) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
|
|
"Plan": "MergeInnerJoin{TableReader(Table(t))->IndexJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` ), USE_INDEX(@`sel_2` `test`.`t3` `c_d_e`), INL_JOIN(@`sel_2` `test`.`t3`), SM_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_JOIN(@sel_1 t1), SM_JOIN(@sel_2 t2) */ t1.a, t1.b from t t1, (select t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
|
|
"Plan": "RightHashJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` ), USE_INDEX(@`sel_2` `test`.`t3` `c_d_e`), SM_JOIN(@`sel_2` `test`.`t2`), HASH_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_JOIN(@sel_1 t1), SM_JOIN(@qb t2) */ t1.a, t1.b from t t1, (select /*+ QB_NAME(qb) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
|
|
"Plan": "RightHashJoin{TableReader(Table(t))->MergeInnerJoin{TableReader(Table(t))->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` ), USE_INDEX(@`sel_2` `test`.`t3` `c_d_e`), SM_JOIN(@`sel_2` `test`.`t2`), HASH_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ INL_JOIN(@sel_1 t1), HASH_JOIN(@sel_2 t2) */ t1.a, t1.b from t t1, (select t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
|
|
"Plan": "IndexJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` `f`), USE_INDEX(@`sel_2` `test`.`t3` `c_d_e`), HASH_JOIN(@`sel_2` `test`.`t2`), INL_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ INL_JOIN(@sel_1 t1), HASH_JOIN(@qb t2) */ t1.a, t1.b from t t1, (select /*+ QB_NAME(qb) */ t2.a from t t2, t t3 where t2.a = t3.c) s where t1.a=s.a",
|
|
"Plan": "IndexJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.c_d_e)[[NULL,+inf]])}(test.t.a,test.t.c)}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` `f`), USE_INDEX(@`sel_2` `test`.`t3` `c_d_e`), HASH_JOIN(@`sel_2` `test`.`t2`), INL_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_AGG(@sel_1), STREAM_AGG(@sel_2) */ count(*) from t t1 where t1.a < (select count(*) from t t2 where t1.a > t2.a)",
|
|
"Plan": "Apply{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]]->Sel([gt(test.t.a, test.t.a)])->StreamAgg)->StreamAgg->Sel([not(isnull(Column#25))])}->HashAgg",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` `f`), USE_INDEX(@`sel_2` `test`.`t2` `f`), STREAM_AGG(@`sel_2`), HASH_AGG(@`sel_1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ STREAM_AGG(@sel_1), HASH_AGG(@qb) */ count(*) from t t1 where t1.a < (select /*+ QB_NAME(qb) */ count(*) from t t2 where t1.a > t2.a)",
|
|
"Plan": "Apply{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]]->Sel([gt(test.t.a, test.t.a)])->HashAgg)->HashAgg->Sel([not(isnull(Column#25))])}->StreamAgg",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` `f`), USE_INDEX(@`sel_2` `test`.`t2` `f`), HASH_AGG(@`sel_2`), STREAM_AGG(@`sel_1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_AGG(@sel_2) */ a, (select count(*) from t t1 where t1.b > t.a) from t where b > (select b from t t2 where t2.b = t.a limit 1)",
|
|
"Plan": "Apply{Apply{TableReader(Table(t))->TableReader(Table(t)->Sel([eq(test.t.b, test.t.a)])->Limit)->Limit}->TableReader(Table(t)->Sel([gt(test.t.b, test.t.a)])->HashAgg)->HashAgg}->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t` ), USE_INDEX(@`sel_3` `test`.`t2` ), USE_INDEX(@`sel_2` `test`.`t1` ), HASH_AGG(@`sel_2`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_JOIN(@sel_1 t1), HASH_JOIN(@sel_2 t1) */ t1.b, t2.a, t2.aa from t t1, (select t1.a as a, t2.a as aa from t t1, t t2) t2 where t1.a = t2.aa;",
|
|
"Plan": "RightHashJoin{TableReader(Table(t))->LeftHashJoin{IndexReader(Index(t.f)[[NULL,+inf]])->IndexReader(Index(t.f)[[NULL,+inf]])}}(test.t.a,test.t.a)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_1` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t1` `f`), USE_INDEX(@`sel_2` `test`.`t2` `f`), HASH_JOIN(@`sel_2` `test`.`t1`), HASH_JOIN(@`sel_1` `test`.`t1`)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ HASH_JOIN(@sel_2 t1@sel_2, t2@sel_2), SM_JOIN(@sel_1 t1@sel_1, t2@sel_1) */ * from (select t1.a, t1.b from t t1, t t2 where t1.a = t2.a) t1, t t2 where t1.b = t2.b",
|
|
"Plan": "MergeInnerJoin{LeftHashJoin{TableReader(Table(t))->IndexReader(Index(t.f)[[NULL,+inf]])}(test.t.a,test.t.a)->Sort->TableReader(Table(t))->Sort}(test.t.b,test.t.b)->Projection",
|
|
"Hints": "USE_INDEX(@`sel_2` `test`.`t1` ), USE_INDEX(@`sel_2` `test`.`t2` `f`), HASH_JOIN(@`sel_2` `test`.`t1`), USE_INDEX(@`sel_1` `test`.`t2` ), SM_JOIN(@`sel_1` `test`.`t1`)"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestIndexJoinUnionScan",
|
|
"Cases": [
|
|
{
|
|
"SQL": [
|
|
"insert into t values(1, 1)",
|
|
"explain select /*+ TIDB_INLJ(t2) */ * from t t1, t t2 where t1.a = t2.a"
|
|
],
|
|
"Plan": [
|
|
"IndexJoin_12 12500.00 root inner join, inner:UnionScan_11, outer key:test.t.a, inner key:test.t.a",
|
|
"├─UnionScan_15 10000.00 root ",
|
|
"│ └─TableReader_17 10000.00 root data:TableScan_16",
|
|
"│ └─TableScan_16 10000.00 cop[tikv] table:t1, range:[-inf,+inf], keep order:false, stats:pseudo",
|
|
"└─UnionScan_11 1.00 root ",
|
|
" └─TableReader_10 1.00 root data:TableScan_9",
|
|
" └─TableScan_9 1.00 cop[tikv] table:t2, range: decided by [test.t.a], keep order:false, stats:pseudo"
|
|
]
|
|
},
|
|
{
|
|
"SQL": [
|
|
"insert into t values(1, 1)",
|
|
"explain select /*+ TIDB_INLJ(t2) */ * from t t1, t t2 where t1.a = t2.b"
|
|
],
|
|
"Plan": [
|
|
"HashLeftJoin_15 12487.50 root inner join, inner:UnionScan_17, equal:[eq(test.t.a, test.t.b)]",
|
|
"├─UnionScan_21 10000.00 root ",
|
|
"│ └─TableReader_23 10000.00 root data:TableScan_22",
|
|
"│ └─TableScan_22 10000.00 cop[tikv] table:t1, range:[-inf,+inf], keep order:false, stats:pseudo",
|
|
"└─UnionScan_17 9990.00 root not(isnull(test.t.b))",
|
|
" └─TableReader_20 9990.00 root data:Selection_19",
|
|
" └─Selection_19 9990.00 cop[tikv] not(isnull(test.t.b))",
|
|
" └─TableScan_18 10000.00 cop[tikv] table:t2, range:[-inf,+inf], keep order:false, stats:pseudo"
|
|
]
|
|
},
|
|
{
|
|
"SQL": [
|
|
"insert into t values(1, 1)",
|
|
"explain select /*+ TIDB_INLJ(t2) */ t1.a , t2.b from t t1, t t2 where t1.a = t2.b"
|
|
],
|
|
"Plan": [
|
|
"Projection_8 12487.50 root test.t.a, test.t.b",
|
|
"└─HashLeftJoin_15 12487.50 root inner join, inner:UnionScan_17, equal:[eq(test.t.a, test.t.b)]",
|
|
" ├─UnionScan_21 10000.00 root ",
|
|
" │ └─TableReader_23 10000.00 root data:TableScan_22",
|
|
" │ └─TableScan_22 10000.00 cop[tikv] table:t1, range:[-inf,+inf], keep order:false, stats:pseudo",
|
|
" └─UnionScan_17 9990.00 root not(isnull(test.t.b))",
|
|
" └─TableReader_20 9990.00 root data:Selection_19",
|
|
" └─Selection_19 9990.00 cop[tikv] not(isnull(test.t.b))",
|
|
" └─TableScan_18 10000.00 cop[tikv] table:t2, range:[-inf,+inf], keep order:false, stats:pseudo"
|
|
]
|
|
},
|
|
{
|
|
"SQL": [
|
|
"insert into tt values(1)",
|
|
"explain select /*+ TIDB_INLJ(t2) */ * from tt t1, tt t2 where t1.a = t2.a"
|
|
],
|
|
"Plan": [
|
|
"HashLeftJoin_19 25000.00 root inner join, inner:Union_28, equal:[eq(test.tt.a, test.tt.a)]",
|
|
"├─Union_21 20000.00 root ",
|
|
"│ ├─UnionScan_22 10000.00 root ",
|
|
"│ │ └─TableReader_24 10000.00 root data:TableScan_23",
|
|
"│ │ └─TableScan_23 10000.00 cop[tikv] table:t1, partition:p0, range:[-inf,+inf], keep order:false, stats:pseudo",
|
|
"│ └─UnionScan_25 10000.00 root ",
|
|
"│ └─TableReader_27 10000.00 root data:TableScan_26",
|
|
"│ └─TableScan_26 10000.00 cop[tikv] table:t1, partition:p1, range:[-inf,+inf], keep order:false, stats:pseudo",
|
|
"└─Union_28 20000.00 root ",
|
|
" ├─UnionScan_29 10000.00 root ",
|
|
" │ └─TableReader_31 10000.00 root data:TableScan_30",
|
|
" │ └─TableScan_30 10000.00 cop[tikv] table:t2, partition:p0, range:[-inf,+inf], keep order:false, stats:pseudo",
|
|
" └─UnionScan_32 10000.00 root ",
|
|
" └─TableReader_34 10000.00 root data:TableScan_33",
|
|
" └─TableScan_33 10000.00 cop[tikv] table:t2, partition:p1, range:[-inf,+inf], keep order:false, stats:pseudo"
|
|
]
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestSemiJoinToInner",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select t1.a, (select count(t2.a) from t t2 where t2.g in (select t3.d from t t3 where t3.c = t1.a)) as agg_col from t t1;",
|
|
"Best": "Apply{IndexReader(Index(t.f)[[NULL,+inf]])->IndexMergeJoin{IndexReader(Index(t.c_d_e)[[NULL,+inf]]->HashAgg)->HashAgg->IndexReader(Index(t.g)[[NULL,+inf]])}(test.t.d,test.t.g)}->HashAgg"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestIndexJoinHint",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select /*+ INL_JOIN(t1) */ * from t1 join t2 on t1.a = t2.a;",
|
|
"Plan": "IndexJoin{IndexLookUp(Index(t1.idx_a)[[NULL,+inf]]->Sel([not(isnull(test.t1.a))]), Table(t1))->TableReader(Table(t2)->Sel([not(isnull(test.t2.a))]))}(test.t2.a,test.t1.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ INL_HASH_JOIN(t1) */ * from t1 join t2 on t1.a = t2.a;",
|
|
"Plan": "IndexHashJoin{IndexLookUp(Index(t1.idx_a)[[NULL,+inf]]->Sel([not(isnull(test.t1.a))]), Table(t1))->TableReader(Table(t2)->Sel([not(isnull(test.t2.a))]))}(test.t2.a,test.t1.a)"
|
|
},
|
|
{
|
|
"SQL": "select /*+ INL_MERGE_JOIN(t1) */ * from t1 join t2 on t1.a = t2.a;",
|
|
"Plan": "IndexMergeJoin{IndexLookUp(Index(t1.idx_a)[[NULL,+inf]]->Sel([not(isnull(test.t1.a))]), Table(t1))->Projection->TableReader(Table(t2)->Sel([not(isnull(test.t2.a))]))}(test.t2.a,test.t1.a)"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestAggToCopHint",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select /*+ AGG_TO_COP(), HASH_AGG(), USE_INDEX(t) */ sum(a) from ta group by a",
|
|
"Best": "IndexReader(Index(ta.a)[[NULL,+inf]]->HashAgg)->HashAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ AGG_TO_COP(), USE_INDEX(t) */ sum(b) from ta group by b",
|
|
"Best": "TableReader(Table(ta)->HashAgg)->HashAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ AGG_TO_COP(), HASH_AGG(), USE_INDEX(t) */ distinct a from ta group by a",
|
|
"Best": "IndexReader(Index(ta.a)[[NULL,+inf]]->HashAgg)->HashAgg",
|
|
"Warning": ""
|
|
},
|
|
{
|
|
"SQL": "select /*+ AGG_TO_COP(), HASH_AGG(), HASH_JOIN(t1), USE_INDEX(t1), USE_INDEX(t2) */ sum(t1.a) from ta t1, ta t2 where t1.a = t2.b group by t1.a",
|
|
"Best": "LeftHashJoin{TableReader(Table(ta)->Sel([not(isnull(test.ta.a))]))->TableReader(Table(ta)->Sel([not(isnull(test.ta.b))]))}(test.ta.a,test.ta.b)->Projection->HashAgg",
|
|
"Warning": "[planner:1815]Optimizer Hint AGG_TO_COP is inapplicable"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderWindow",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select lead(a, 1) over (partition by null) as c from t",
|
|
"Best": "IndexReader(Index(t.f)[[NULL,+inf]])->Window(lead(test.t.a, 1)->Column#14 over())->Projection"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestDAGPlanBuilderWindowParallel",
|
|
"Cases": [
|
|
{
|
|
"SQL": "select lead(a, 1) over (partition by null) as c from t",
|
|
"Best": "IndexReader(Index(t.f)[[NULL,+inf]])->Window(lead(test.t.a, 1)->Column#14 over())->Projection"
|
|
},
|
|
{
|
|
"SQL": "select lead(a, 1) over (partition by b) as c from t",
|
|
"Best": "TableReader(Table(t))->Sort->Window(lead(test.t.a, 1)->Column#14 over(partition by test.t.b))->Partition(execution info: concurrency:4, data source:TableReader_10)->Projection"
|
|
}
|
|
]
|
|
}
|
|
]
|