1342cba5fe
* fix window * tweak * move test * use filelist * add explain test * fix test * fix * fix * fix test
486 lines
17 KiB
Plaintext
486 lines
17 KiB
Plaintext
DROP TABLE IF EXISTS t;
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CREATE TABLE t (
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c1 int,
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c2 int,
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c3 int,
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PRIMARY KEY (c1)
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);
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INSERT INTO t VALUES (1,2,3);
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set session tidb_hashagg_partial_concurrency = 1;
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set session tidb_hashagg_final_concurrency = 1;
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SELECT * from t;
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c1 c2 c3
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1 2 3
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SELECT c1, c2, c3 from t;
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c1 c2 c3
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1 2 3
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SELECT c1, c1 from t;
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c1 c1
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1 1
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SELECT c1 as a, c2 as a from t;
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a a
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1 2
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SELECT 1;
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1
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1
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SELECT 1, 1;
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1 1
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1 1
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SET @@autocommit = 1;
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SELECT @@autocommit;
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@@autocommit
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1
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SELECT @@autocommit, @@autocommit;
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@@autocommit @@autocommit
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1 1
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SET @a = 10;
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SET @b = 11;
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SELECT @a, @@autocommit;
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@a @@autocommit
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10 1
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SELECT @a, @b;
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@a @b
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10 11
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SELECT 1, @a;
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1 @a
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1 10
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SELECT 1, @a as a;
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1 a
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1 10
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SELECT 1, @a, @@autocommit as a, c1 from t;
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1 @a a c1
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1 10 1 1
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SET @b = "123";
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SELECT @b + "123";
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@b + "123"
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246
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SELECT 1 + 1;
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1 + 1
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2
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SELECT 1 a, 1 as a, 1 + 1 a;
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a a a
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1 1 2
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SELECT c1 a, c1 as a from t;
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a a
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1 1
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SELECT * from t LIMIT 0,1;
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c1 c2 c3
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1 2 3
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SELECT * from t LIMIT 1;
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c1 c2 c3
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1 2 3
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SELECT * from t LIMIT 1,1;
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c1 c2 c3
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SELECT * from t LIMIT 1 OFFSET 0;
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c1 c2 c3
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1 2 3
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DROP TABLE IF EXISTS t2;
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CREATE TABLE t2 (
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c1 int,
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c2 int,
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PRIMARY KEY (c1)
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);
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INSERT INTO t2 VALUES (1,2);
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SELECT * from t a;
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c1 c2 c3
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1 2 3
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SELECT * from t a, t2 b;
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c1 c2 c3 c1 c2
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1 2 3 1 2
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SELECT * from t as a, t2 as b;
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c1 c2 c3 c1 c2
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1 2 3 1 2
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SELECT * from t a left join t2 b on a.c1 = b.c1;
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c1 c2 c3 c1 c2
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1 2 3 1 2
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SELECT * from (SELECT 1, 1) as a;
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Error 1060: Duplicate column name '1'
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SELECT * from (SELECT * FROM t, t2) as a;
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Error 1060: Duplicate column name 'c1'
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DROP TABLE IF EXISTS t;
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CREATE TABLE t (c1 INT, c2 INT);
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INSERT INTO t VALUES (1, 2), (1, 1), (1, 3);
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SELECT c1=c2 FROM t;
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c1=c2
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0
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1
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0
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SELECT 1=1;
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1=1
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1
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SELECT t.c1 + t.c2 from t limit 1;
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t.c1 + t.c2
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3
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SELECT t.c1 from t limit 1;
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c1
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1
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SELECT t.c1 + c2 from t limit 1;
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t.c1 + c2
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3
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SELECT c1 + 10 from t limit 1;
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c1 + 10
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11
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SELECT t.c1 + 10 from t limit 1;
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t.c1 + 10
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11
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SELECT all c1, c2 from t limit 1;
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c1 c2
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1 2
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SELECT distinct c1, c2 from t order by c1, c2 limit 1;
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c1 c2
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1 1
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SELECT c2 from t where not (c2 > 2);
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c2
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2
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1
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select c2 from t where not null is null;
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c2
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select !(1 + 2);
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!(1 + 2)
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0
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select + - 1, --1, +-+-+1, + "123";
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+ - 1 --1 +-+-+1 123
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-1 1 1 123
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select --------------------1, ++++++++++++++++++++1;
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--------------------1 1
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1 1
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select +(+(1)), (-+1), ((+1)), +1.23, +1e23, +1E23, +null, +true, +false, + ( ( 1 ) );
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1 (-+1) 1 1.23 1e23 1E23 NULL TRUE FALSE 1
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1 -1 1 1.23 1e23 1e23 NULL 1 0 1
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select +
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(
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+
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(
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1
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)
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)
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;
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1
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1
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select + ( + 1 );
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1
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1
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select --+(1 + 1), +-+-(1 * 1);
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--+(1 + 1) +-+-(1 * 1)
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2 1
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select * from t where null;
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c1 c2
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select * from t where 1;
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c1 c2
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1 2
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1 1
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1 3
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select * from t where 0;
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c1 c2
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select * from t where 0 * 10;
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c1 c2
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select * from t where null is not null;
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c1 c2
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select * from t where !1;
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c1 c2
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select * from t where 1 && 0 || 3 && null;
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c1 c2
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select * from t as a, t2 as b;
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c1 c2 c1 c2
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1 2 1 2
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1 1 1 2
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1 3 1 2
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select * from t as a cross join t2 as b;
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c1 c2 c1 c2
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1 2 1 2
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1 1 1 2
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1 3 1 2
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select * from t as a join t2 as b;
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c1 c2 c1 c2
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1 2 1 2
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1 1 1 2
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1 3 1 2
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select * from t as a join t2 as b on a.c2 = b.c2;
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c1 c2 c1 c2
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1 2 1 2
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select * from (t);
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c1 c2
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1 2
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1 1
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1 3
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select * from (t as a, t2 as b);
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c1 c2 c1 c2
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1 2 1 2
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1 1 1 2
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1 3 1 2
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select * from (t as a cross join t2 as b);
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c1 c2 c1 c2
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1 2 1 2
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1 1 1 2
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1 3 1 2
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select 1 as a from t;
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a
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1
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1
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1
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select count(*), 1 from t;
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count(*) 1
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3 1
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select *, 1 from t;
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c1 c2 1
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1 2 1
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1 1 1
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1 3 1
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select 1, count(1), sum(1);
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1 count(1) sum(1)
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1 1 1
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drop table if exists t1;
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create table t1(a int primary key, b int, c int, index idx(b, c));
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insert into t1 values(1, 2, 3);
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insert into t1 values(2, 3, 4);
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insert into t1 values(3 ,4, 5);
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insert into t1 values(4, 5, 6);
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insert into t1 values(5, 6, 7);
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insert into t1 values(6, 7, 8);
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insert into t1 values(7, 8, 9);
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insert into t1 values(9, 10, 11);
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explain select a, c from t1 use index(idx) order by a limit 5;
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id count task operator info
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TopN_7 5.00 root Column#1:asc, offset:0, count:5
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└─IndexReader_15 5.00 root index:TopN_14
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└─TopN_14 5.00 cop Column#1:asc, offset:0, count:5
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└─IndexScan_13 10000.00 cop table:t1, index:b, c, range:[NULL,+inf], keep order:false, stats:pseudo
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select c, a from t1 use index(idx) order by a limit 5;
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c a
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3 1
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4 2
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5 3
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6 4
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7 5
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drop table if exists t;
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create table t (a int, b int, c int, key idx(a, b, c));
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explain select count(a) from t;
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id count task operator info
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StreamAgg_20 1.00 root funcs:count(Column#8)
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└─IndexReader_21 1.00 root index:StreamAgg_8
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└─StreamAgg_8 1.00 cop funcs:count(Column#1)
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└─IndexScan_19 10000.00 cop table:t, index:a, b, c, range:[NULL,+inf], keep order:false, stats:pseudo
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select count(a) from t;
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count(a)
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0
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insert t values(0,0,0);
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explain select distinct b from t group by a;
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id count task operator info
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HashAgg_7 8000.00 root group by:Column#2, funcs:firstrow(Column#2)
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└─StreamAgg_22 8000.00 root group by:Column#9, funcs:firstrow(Column#8)
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└─IndexReader_23 8000.00 root index:StreamAgg_11
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└─StreamAgg_11 8000.00 cop group by:Column#1, funcs:firstrow(Column#2)
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└─IndexScan_21 10000.00 cop table:t, index:a, b, c, range:[NULL,+inf], keep order:true, stats:pseudo
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select distinct b from t group by a;
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b
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0
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explain select count(b) from t group by a;
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id count task operator info
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StreamAgg_19 8000.00 root group by:Column#10, funcs:count(Column#9)
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└─IndexReader_20 8000.00 root index:StreamAgg_8
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└─StreamAgg_8 8000.00 cop group by:Column#1, funcs:count(Column#2)
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└─IndexScan_18 10000.00 cop table:t, index:a, b, c, range:[NULL,+inf], keep order:true, stats:pseudo
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select count(b) from t group by a;
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count(b)
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1
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insert t values(1,1,1),(3,3,6),(3,2,5),(2,1,4),(1,1,3),(1,1,2);
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explain select count(a) from t where b>0 group by a, b;
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id count task operator info
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StreamAgg_25 2666.67 root group by:Column#11, Column#12, funcs:count(Column#10)
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└─IndexReader_26 2666.67 root index:StreamAgg_9
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└─StreamAgg_9 2666.67 cop group by:Column#1, Column#2, funcs:count(Column#1)
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└─Selection_24 3333.33 cop gt(Column#2, 0)
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└─IndexScan_23 10000.00 cop table:t, index:a, b, c, range:[NULL,+inf], keep order:true, stats:pseudo
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select count(a) from t where b>0 group by a, b;
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count(a)
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3
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1
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1
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1
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explain select count(a) from t where b>0 group by a, b order by a;
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id count task operator info
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Projection_7 2666.67 root Column#5
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└─StreamAgg_36 2666.67 root group by:Column#19, Column#20, funcs:count(Column#17), firstrow(Column#19)
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└─IndexReader_37 2666.67 root index:StreamAgg_34
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└─StreamAgg_34 2666.67 cop group by:Column#1, Column#2, funcs:count(Column#1)
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└─Selection_28 3333.33 cop gt(Column#2, 0)
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└─IndexScan_27 10000.00 cop table:t, index:a, b, c, range:[NULL,+inf], keep order:true, stats:pseudo
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select count(a) from t where b>0 group by a, b order by a;
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count(a)
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3
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1
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1
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1
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explain select count(a) from t where b>0 group by a, b order by a limit 1;
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id count task operator info
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Projection_9 1.00 root Column#5
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└─Limit_15 1.00 root offset:0, count:1
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└─StreamAgg_44 1.00 root group by:Column#19, Column#20, funcs:count(Column#17), firstrow(Column#19)
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└─IndexReader_45 1.00 root index:StreamAgg_40
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└─StreamAgg_40 1.00 cop group by:Column#1, Column#2, funcs:count(Column#1)
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└─Selection_43 1.25 cop gt(Column#2, 0)
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└─IndexScan_42 3.75 cop table:t, index:a, b, c, range:[NULL,+inf], keep order:true, stats:pseudo
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select count(a) from t where b>0 group by a, b order by a limit 1;
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count(a)
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3
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drop table if exists t;
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create table t (id int primary key, a int, b int);
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explain select * from (t t1 left join t t2 on t1.a = t2.a) left join (t t3 left join t t4 on t3.a = t4.a) on t2.b = 1;
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id count task operator info
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HashLeftJoin_10 155937656.25 root CARTESIAN left outer join, inner:HashLeftJoin_17, left cond:[eq(Column#6, 1)]
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├─HashLeftJoin_11 12487.50 root left outer join, inner:TableReader_16, equal:[eq(Column#2, Column#5)]
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│ ├─TableReader_13 10000.00 root data:TableScan_12
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│ │ └─TableScan_12 10000.00 cop table:t1, range:[-inf,+inf], keep order:false, stats:pseudo
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│ └─TableReader_16 9990.00 root data:Selection_15
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│ └─Selection_15 9990.00 cop not(isnull(Column#5))
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│ └─TableScan_14 10000.00 cop table:t2, range:[-inf,+inf], keep order:false, stats:pseudo
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└─HashLeftJoin_17 12487.50 root left outer join, inner:TableReader_22, equal:[eq(Column#8, Column#11)]
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├─TableReader_19 10000.00 root data:TableScan_18
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│ └─TableScan_18 10000.00 cop table:t3, range:[-inf,+inf], keep order:false, stats:pseudo
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└─TableReader_22 9990.00 root data:Selection_21
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└─Selection_21 9990.00 cop not(isnull(Column#11))
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└─TableScan_20 10000.00 cop table:t4, range:[-inf,+inf], keep order:false, stats:pseudo
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drop table if exists t;
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create table t(a bigint primary key, b bigint);
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desc select * from t where a = 1;
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id count task operator info
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Point_Get_1 1.00 root table:t, handle:1
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desc select * from t where a = '1';
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id count task operator info
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Point_Get_1 1.00 root table:t, handle:1
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desc select sysdate(), sleep(1), sysdate();
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id count task operator info
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Projection_3 1.00 root sysdate(), sleep(1), sysdate()
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└─TableDual_4 1.00 root rows:1
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drop table if exists th;
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set @@session.tidb_enable_table_partition = '1';
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create table th (a int, b int) partition by hash(a) partitions 3;
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insert into th values (0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8);
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insert into th values (-1,-1),(-2,-2),(-3,-3),(-4,-4),(-5,-5),(-6,-6),(-7,-7),(-8,-8);
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desc select * from th where a=-2;
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id count task operator info
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TableReader_8 10.00 root data:Selection_7
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└─Selection_7 10.00 cop eq(Column#1, -2)
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└─TableScan_6 10000.00 cop table:th, partition:p2, range:[-inf,+inf], keep order:false, stats:pseudo
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desc select * from th;
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id count task operator info
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Union_8 30000.00 root
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├─TableReader_10 10000.00 root data:TableScan_9
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│ └─TableScan_9 10000.00 cop table:th, partition:p0, range:[-inf,+inf], keep order:false, stats:pseudo
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├─TableReader_12 10000.00 root data:TableScan_11
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│ └─TableScan_11 10000.00 cop table:th, partition:p1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─TableReader_14 10000.00 root data:TableScan_13
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└─TableScan_13 10000.00 cop table:th, partition:p2, range:[-inf,+inf], keep order:false, stats:pseudo
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desc select * from th partition (p2,p1);
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id count task operator info
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Union_7 20000.00 root
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├─TableReader_9 10000.00 root data:TableScan_8
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│ └─TableScan_8 10000.00 cop table:th, partition:p1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─TableReader_11 10000.00 root data:TableScan_10
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└─TableScan_10 10000.00 cop table:th, partition:p2, range:[-inf,+inf], keep order:false, stats:pseudo
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drop table if exists t;
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create table t(a int, b int);
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explain select a != any (select a from t t2) from t t1;
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id count task operator info
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Projection_8 10000.00 root and(or(or(gt(Column#9, 1), ne(Column#1, Column#8)), if(ne(Column#10, 0), NULL, 0)), and(ne(Column#11, 0), if(isnull(Column#1), NULL, 1)))
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└─HashLeftJoin_9 10000.00 root CARTESIAN inner join, inner:StreamAgg_16
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├─TableReader_12 10000.00 root data:TableScan_11
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│ └─TableScan_11 10000.00 cop table:t1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─StreamAgg_16 1.00 root funcs:firstrow(Column#0), count(distinct Column#0), sum(Column#0), count(1)
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└─Projection_26 10000.00 root Column#4, Column#4, cast(isnull(Column#4))
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└─TableReader_23 10000.00 root data:TableScan_22
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└─TableScan_22 10000.00 cop table:t2, range:[-inf,+inf], keep order:false, stats:pseudo
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explain select a = all (select a from t t2) from t t1;
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id count task operator info
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Projection_8 10000.00 root or(and(and(le(Column#9, 1), eq(Column#1, Column#8)), if(ne(Column#10, 0), NULL, 1)), or(eq(Column#11, 0), if(isnull(Column#1), NULL, 0)))
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└─HashLeftJoin_9 10000.00 root CARTESIAN inner join, inner:StreamAgg_16
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├─TableReader_12 10000.00 root data:TableScan_11
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│ └─TableScan_11 10000.00 cop table:t1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─StreamAgg_16 1.00 root funcs:firstrow(Column#0), count(distinct Column#0), sum(Column#0), count(1)
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└─Projection_26 10000.00 root Column#4, Column#4, cast(isnull(Column#4))
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└─TableReader_23 10000.00 root data:TableScan_22
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└─TableScan_22 10000.00 cop table:t2, range:[-inf,+inf], keep order:false, stats:pseudo
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drop table if exists t;
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create table t(a int, b int);
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drop table if exists s;
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create table s(a varchar(20), b varchar(20));
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explain select a in (select a from s where s.b = t.b) from t;
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id count task operator info
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Projection_9 10000.00 root Column#8
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└─HashLeftJoin_10 10000.00 root left outer semi join, inner:Projection_14, equal:[eq(Column#10, Column#11)], other cond:eq(cast(Column#1), cast(Column#4))
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├─Projection_11 10000.00 root Column#1, Column#2, cast(Column#2)
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│ └─TableReader_13 10000.00 root data:TableScan_12
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│ └─TableScan_12 10000.00 cop table:t, range:[-inf,+inf], keep order:false, stats:pseudo
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└─Projection_14 10000.00 root Column#4, Column#5, cast(Column#5)
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└─TableReader_16 10000.00 root data:TableScan_15
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└─TableScan_15 10000.00 cop table:s, range:[-inf,+inf], keep order:false, stats:pseudo
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explain select a in (select a+b from t t2 where t2.b = t1.b) from t t1;
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id count task operator info
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Projection_7 10000.00 root Column#8
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└─HashLeftJoin_8 10000.00 root left outer semi join, inner:TableReader_12, equal:[eq(Column#2, Column#5)], other cond:eq(Column#1, plus(Column#4, Column#5))
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├─TableReader_10 10000.00 root data:TableScan_9
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│ └─TableScan_9 10000.00 cop table:t1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─TableReader_12 10000.00 root data:TableScan_11
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└─TableScan_11 10000.00 cop table:t2, range:[-inf,+inf], keep order:false, stats:pseudo
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drop table t;
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create table t(a int not null, b int);
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explain select a in (select a from t t2 where t2.b = t1.b) from t t1;
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id count task operator info
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Projection_7 10000.00 root Column#8
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└─HashLeftJoin_8 10000.00 root left outer semi join, inner:TableReader_12, equal:[eq(Column#2, Column#5) eq(Column#1, Column#4)]
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├─TableReader_10 10000.00 root data:TableScan_9
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│ └─TableScan_9 10000.00 cop table:t1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─TableReader_12 10000.00 root data:TableScan_11
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└─TableScan_11 10000.00 cop table:t2, range:[-inf,+inf], keep order:false, stats:pseudo
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explain select 1 from (select sleep(1)) t;
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id count task operator info
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Projection_4 1.00 root 1
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└─Projection_5 1.00 root sleep(1)
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└─TableDual_6 1.00 root rows:1
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drop table if exists t;
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create table t(a int, b int);
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explain select a from t order by rand();
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id count task operator info
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Projection_8 10000.00 root Column#4
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└─Sort_4 10000.00 root Column#5:asc
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└─Projection_9 10000.00 root Column#4, rand()
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└─TableReader_7 10000.00 root data:TableScan_6
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└─TableScan_6 10000.00 cop table:t, range:[-inf,+inf], keep order:false, stats:pseudo
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explain select a, b from t order by abs(2);
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id count task operator info
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TableReader_8 10000.00 root data:TableScan_7
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└─TableScan_7 10000.00 cop table:t, range:[-inf,+inf], keep order:false, stats:pseudo
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explain select a from t order by abs(rand())+1;
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id count task operator info
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Projection_8 10000.00 root Column#4
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└─Sort_4 10000.00 root Column#5:asc
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└─Projection_9 10000.00 root Column#4, plus(abs(rand()), 1)
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└─TableReader_7 10000.00 root data:TableScan_6
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└─TableScan_6 10000.00 cop table:t, range:[-inf,+inf], keep order:false, stats:pseudo
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drop table if exists t1;
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create table t1(a int, b int);
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drop table if exists t2;
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create table t2(a int, b int);
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explain select * from t1 where t1.a in (select t2.a as a from t2 where t2.b > t1.b order by t1.b);
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id count task operator info
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HashLeftJoin_10 7984.01 root semi join, inner:TableReader_16, equal:[eq(Column#1, Column#4)], other cond:gt(Column#5, Column#2)
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├─TableReader_13 9980.01 root data:Selection_12
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│ └─Selection_12 9980.01 cop not(isnull(Column#1)), not(isnull(Column#2))
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│ └─TableScan_11 10000.00 cop table:t1, range:[-inf,+inf], keep order:false, stats:pseudo
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└─TableReader_16 9980.01 root data:Selection_15
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└─Selection_15 9980.01 cop not(isnull(Column#4)), not(isnull(Column#5))
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└─TableScan_14 10000.00 cop table:t2, range:[-inf,+inf], keep order:false, stats:pseudo
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drop table t;
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CREATE TABLE t (id int(10) unsigned NOT NULL AUTO_INCREMENT,
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i int(10) unsigned DEFAULT NULL,
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x int(10) unsigned DEFAULT 0,
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PRIMARY KEY (`id`)
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);
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explain select row_number() over( partition by i ) - x as rnk from t;
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id count task operator info
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Projection_7 10000.00 root minus(Column#7, Column#3)
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└─Window_8 10000.00 root row_number() over(partition by Column#2)
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└─Sort_11 10000.00 root Column#2:asc
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└─TableReader_10 10000.00 root data:TableScan_9
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└─TableScan_9 10000.00 cop table:t, range:[0,+inf], keep order:false, stats:pseudo
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