184 lines
14 KiB
Plaintext
184 lines
14 KiB
Plaintext
--disable_query_log
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set @@session.explicit_defaults_for_timestamp=off;
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--enable_query_log
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#owner: link.zt
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#owner group: sql1
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# tags: optimizer
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# Test mutli avg
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--disable_warnings
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drop table if exists t1;
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drop table if exists t2;
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drop table if exists t3;
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--enable_warnings
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create table t1 (c1 int primary key, c2 int, c3 varchar(32)) partition by hash(c1) partitions 2;
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insert into t1 values(1,1,1),(3,3,3),(5,5,5),(7,7,7),(9,9,9),(11,11,11),(13,13,13),(15,15,15),(17,17,17),(19,19,19);
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insert into t1 values(31,1,1),(33,3,3),(35,5,5),(37,7,7),(39,9,9),(41,11,11),(43,13,13),(45,15,15),(47,17,17),(49,19,19);
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insert into t1 values(2,2,2),(4,4,4),(6,6,6),(8,8,8),(10,10,10),(12,12,12),(14,14,14),(16,16,16),(18,18,18),(20,20,20);
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insert into t1 values(32,2,2),(34,4,4),(36,6,6),(38,8,8),(40,10,10),(42,12,12),(44,14,14),(46,16,16),(48,18,18),(50,20,20);
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create table t2 (c1 int primary key, c2 int, c3 varchar(32)) partition by hash(c1) partitions 2;
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create table t3 (c1 int primary key, c2 int, c3 varchar(32)) partition by hash(c1) partitions 2;
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insert into t2 values(2,2,2),(4,4,4),(6,6,6),(8,8,8),(10,10,10),(12,12,12),(14,14,14),(16,16,16),(18,18,18),(20,20,20),(22,22,22);
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## ------------------case that not match the rules to use topk---------------------------##
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#without order by
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select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 limit 5;
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select @@is_result_accurate;
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#without limit
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select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1);
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select @@is_result_accurate;
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#without group by
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select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 order by avg(c1) limit 5;
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select @@is_result_accurate;
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#is select for update
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## currently MySQL mode for update temporarily uses Oracle plan,
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## this syntax is prohibited under Oracle,
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## and it needs to be opened for mysql mode later
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select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5 for update nowait;
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select @@is_result_accurate;
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#without topk hint
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select avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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select @@is_result_accurate;
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#with found_rows
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select /*+topk(20 6)*/ sql_calc_found_rows avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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select @@is_result_accurate;
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#with subquery
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select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by (select c1 from t1 where c2 = 1 and c1 !=1) limit 5;
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select @@is_result_accurate;
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#with distinct
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select /*+topk(20 6)*/ distinct avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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select @@is_result_accurate;
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#with group_concat will not use topk
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select /*+topk(20 6)*/ sum(c1), avg(c2), group_concat(c3, c1) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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select @@is_result_accurate;
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#not based table
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select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from (select * from t1 where c2 <10) as a group by a.c2 order by avg(a.c1) limit 5;
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select @@is_result_accurate;
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# join table
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select /*+topk(20 6)*/ distinct avg(t1.c1), avg(t1.c2), avg(t1.c3) from t1 , t2 group by t1.c2 order by avg(t1.c1) limit 5;
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select @@is_result_accurate;
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##-----------------case that match rules of topk-----------------------##
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##hash agg + topk_sort
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select /*+topk(1 2) use_hash_aggregation*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c3 limit 1;
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select @@is_result_accurate;
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##hash agg + topk_sort
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select /*+topk(1 2) use_hash_aggregation*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by "aaa" limit 1;
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select @@is_result_accurate;
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select /*+topk(90 2) use_hash_aggregation*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <30 group by c2 order by c3 limit 10;
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select @@is_result_accurate;
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##merge agg + sort +topk
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select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c3 limit 1;
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select @@is_result_accurate;
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## with offset
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select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by c3 limit 1 offset 4;
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select @@is_result_accurate;
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select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by c3 limit 1 offset 1000;
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select @@is_result_accurate;
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##merge agg + marterial +topk
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select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c2 limit 1;
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select @@is_result_accurate;
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##test limit 0
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select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c3 limit 0;
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select @@is_result_accurate;
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##complex order by item
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select /*+topk(1 1)*/ c2, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3), sum(c1)/sum(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(1 1)*/ c1, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)/sum(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(1 1)*/ c2, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)/sum(c2) + avg(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(1 1)*/ avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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select @@is_result_accurate;
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##different topk params
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select /*+topk(0 0)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(0 10)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(50 0)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(10000 1)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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select @@is_result_accurate;
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select /*+topk(1 10000)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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select @@is_result_accurate;
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##topk is in subquery
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select * from (select /*+topk(0 4)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 5) as a;
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select c1 from t1 where c1 < any (select /*+topk(0 4)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 5);
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(select /*+topk(0 4)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 5) union (select /*+topk(0 10)*/ sum(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 7);
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select c1 from t1 where (select /*+topk(0 10)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 1) > 1 ;
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##TODO:this is not supported
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##select (select /*+topk(10 5)*/ avg(c1) from t1 where c2 =2 group by a.c2 order by sum(c2) limit 5) from t2 as a;
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#select (select /*+topk(10 5)*/ avg(c1) from t1 where c2 =2 group by c2 order by sum(a.c2 + c2) limit 5) from t2 as a ;
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select * from (select /*+topk(10 5)*/ c3, c1, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 group by c2 order by c3 limit 7) as a left join t2 on a.c1 = t2.c1 left join t3 on t3.c1 = a.c1 order by a.c3;
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##check whether plan cache will hit TODO:now plan cache did not support distribute plan
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##check plan
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explain basic select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 limit 5;
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#without limit
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explain basic select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1);
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#without group by
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explain basic select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 order by avg(c1) limit 5;
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#is select for update
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explain basic select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5 for update nowait;
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#without topk hint
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explain basic select avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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#with found_rows
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explain basic select /*+topk(20 6)*/ sql_calc_found_rows avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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#with subquery
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explain basic select /*+topk(20 6)*/ avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by (select c1 from t1 where c2 = 1 and c1 != 1) limit 5;
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#with distinct
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explain basic select /*+topk(20 6)*/ distinct avg(c1), avg(c2), avg(c3) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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#with group_concat will not use topk
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explain basic select /*+topk(20 6)*/ sum(c1), avg(c2), group_concat(c3, c1) from t1 where c2 <10 group by c2 order by avg(c1) limit 5;
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##check plan
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#todo 需要看一下这条sql的执行计划
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explain basic select /*+topk(1 2) use_hash_aggregation*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c3 limit 1;
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#explain basic select /*+topk(1 2) use_hash_aggregation*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by "aaa" limit 1;
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explain basic select /*+topk(90 2) use_hash_aggregation*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <30 group by c2 order by c3 limit 10;
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##merge agg + sort +topk
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explain basic select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c3 limit 1;
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##merge agg + marterial +topk
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explain basic select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by c3 limit 1 offset 4;
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##test limit 0
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explain basic select /*+topk(1 1)*/ c3, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by c3 limit 0;
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##complex order by item
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explain basic select /*+topk(1 1)*/ c2, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <12 group by c2 order by avg(c3), sum(c1)/sum(c2) limit 5;
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explain basic select /*+topk(1 1)*/ c1, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)/sum(c2) limit 5;
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explain basic select /*+topk(1 1)*/ c2, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)/sum(c2) + avg(c2) limit 5;
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explain basic select /*+topk(1 1)*/ avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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##different topk params
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explain basic select /*+topk(0 0)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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explain basic select /*+topk(0 10)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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explain basic select /*+topk(50 0)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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explain basic select /*+topk(10000 1)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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explain basic select /*+topk(1 10000)*/ c2, sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 where c2 <10 group by c2 order by avg(c3) desc, sum(c1)+sum(c2) limit 5;
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##topk is in subquery
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set @@ob_enable_transformation=default;
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explain basic select * from (select /*+topk(0 4)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 5) as a;
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explain basic select c1 from t1 where c1 < any (select /*+topk(0 4)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 5);
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explain basic (select /*+topk(0 4)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 5) union (select /*+topk(0 10)*/ sum(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 7);
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explain basic select c1 from t1 where (select /*+topk(0 10)*/ avg(c1) from t1 where c2 <10 group by c2 order by sum(c2) limit 1) > 1 ;
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##TODO:this is not supported
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##select (select /*+topk(10 5)*/ avg(c1) from t1 where c2 =2 group by a.c2 order by sum(c2) limit 5) from t2 as a;
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#select (select /*+topk(10 5)*/ avg(c1) from t1 where c2 =2 group by c2 order by sum(a.c2 + c2) limit 5) from t2 as a ;
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explain basic select * from (select /*+topk(10 5)*/ c3, c1, avg(c1), sum(c2), sum(c1) + sum(c2), count(c3), min(c3), max(c1), sum(c2)/count(c1), sum(c3)/sum(c1) from t1 group by c2 order by c3 limit 7) as a left join t2 on a.c1 = t2.c1 left join t3 on t3.c1 = a.c1;
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drop table t1;
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drop table t2;
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drop table t3;
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