diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:00:34 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:00:34 +0000 |
commit | 3f619478f796eddbba6e39502fe941b285dd97b1 (patch) | |
tree | e2c7b5777f728320e5b5542b6213fd3591ba51e2 /mysql-test/main/subselect3.inc | |
parent | Initial commit. (diff) | |
download | mariadb-3f619478f796eddbba6e39502fe941b285dd97b1.tar.xz mariadb-3f619478f796eddbba6e39502fe941b285dd97b1.zip |
Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mysql-test/main/subselect3.inc')
-rw-r--r-- | mysql-test/main/subselect3.inc | 1319 |
1 files changed, 1319 insertions, 0 deletions
diff --git a/mysql-test/main/subselect3.inc b/mysql-test/main/subselect3.inc new file mode 100644 index 00000000..2258456f --- /dev/null +++ b/mysql-test/main/subselect3.inc @@ -0,0 +1,1319 @@ +--disable_warnings +drop table if exists t0, t1, t2, t3, t4, t5, t11, t12, t21, t22; +--enable_warnings + +set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on,semijoin_with_cache=on'; + +# +# 1. Subquery with GROUP/HAVING +# +create table t1 (oref int, grp int, ie int) ; +insert into t1 (oref, grp, ie) values + (1, 1, 1), + (1, 1, 1), + (1, 2, NULL), + + (2, 1, 3), + + (3, 1, 4), + (3, 2, NULL); + +# Ok, for +# select max(ie) from t1 where oref=PARAM group by grp +# we'll have: +# PARAM subquery result +# 1 -> {(1), (NULL)} matching + NULL +# 2 -> {(3)} non-matching +# 3 -> {(3), (NULL)} non-matching + NULL +# 4 -> {} empty set + +create table t2 (oref int, a int); +insert into t2 values + (1, 1), + (2, 2), + (3, 3), + (4, NULL), + (2, NULL); + +# true, false, null, false, null +select a, oref, a in (select max(ie) + from t1 where oref=t2.oref group by grp) Z from t2; + +# This must have a trigcond +explain extended +select a, oref, a in (select max(ie) + from t1 where oref=t2.oref group by grp) Z from t2; + +# This must not have a trigcond: +explain extended +select a, oref from t2 +where a in (select max(ie) from t1 where oref=t2.oref group by grp); +select a, oref, a in ( + select max(ie) from t1 where oref=t2.oref group by grp union + select max(ie) from t1 where oref=t2.oref group by grp + ) Z from t2; + +# Non-correlated subquery, 2 NULL evaluations +create table t3 (a int); +insert into t3 values (NULL), (NULL); +flush status; +--disable_ps2_protocol +select a in (select max(ie) from t1 where oref=4 group by grp) from t3; +--enable_ps2_protocol +show status like 'Handler_read_rnd_next'; +select ' ^ This must show 11' Z; + +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; + +# This must show trigcond: +explain extended select a in (select max(ie) from t1 where oref=4 group by grp) from t3; + +set @@optimizer_switch=@save_optimizer_switch; +drop table t1, t2, t3; + +# +# 2. Subquery handled with 'index_subquery': +# +create table t1 (a int, oref int, key(a)); +insert into t1 values + (1, 1), + (1, NULL), + (2, 3), + (2, NULL), + (3, NULL); +insert into t1 values (5, 7), (8, 9), (4, 1); + +create table t2 (a int, oref int); +insert into t2 values (1, 1), (2,2), (NULL, 3), (NULL, 4); + +select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; + +# The next explain shows "using index" but that is just incorrect display +# (there is a bug filed about this). +explain extended +select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; + +--disable_ps2_protocol +flush status; +select oref, a from t2 where a in (select a from t1 where oref=t2.oref); +# This will only show access to t2: +show status like '%Handler_read_rnd_next'; + +# Check that repeated NULL-scans are not cached (subq. is not correlated): +delete from t2; +insert into t2 values (NULL, 0),(NULL, 0), (NULL, 0), (NULL, 0); + +set optimizer_switch='subquery_cache=off'; +flush status; +select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2; +show status like '%Handler_read%'; +select 'No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.' Z; +set @@optimizer_switch=@save_optimizer_switch; +--enable_ps2_protocol + +drop table t1, t2; + +# +# 3. Subquery handled with 'unique_index_subquery': +# +create table t1 (a int, b int, primary key (a)); +insert into t1 values (1,1), (3,1),(100,1); + +create table t2 (a int, b int); +insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0); + +select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ; + +drop table t1, t2; + +# +# 4. Subquery that is a join, with ref access +# +create table t1 (a int, b int, key(a)); +insert into t1 values + (0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); + +create table t2 like t1; +insert into t2 select * from t1; +update t2 set b=1; + +create table t3 (a int, oref int); +insert into t3 values (1, 1), (NULL,1), (NULL,0); +select a, oref, + t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; + +# This must have trigcond in WHERE and HAVING: +explain extended +select a, oref, + t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; + +drop table t1, t2, t3; + + +# +# BUG#24085: Wrong query result for "NULL IN (SELECT ... UNION SELECT ...)" +# + +# case 1: NULL IN (SELECT not_null_val FROM ...) w/o HAVING/GROUP-BY/etc +create table t1 (a int NOT NULL, b int NOT NULL, key(a)); +insert into t1 values + (0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9); + +create table t2 like t1; +insert into t2 select * from t1; +update t2 set b=1; + +create table t3 (a int, oref int); +insert into t3 values (1, 1), (NULL,1), (NULL,0); +select a, oref, + t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; + +--echo This must show a trig_cond: +explain extended +select a, oref, + t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z +from t3; +drop table t1,t2,t3; + + +# case 2: NULL IN (SELECT not_null_val FROM) where SELECT has GROUP BY +create table t1 (oref int, grp int); +insert into t1 (oref, grp) values + (1, 1), + (1, 1); + +# Ok, for +# select count(*) from t1 group by grp having grp=PARAM +# we'll have: +# PARAM subuqery result +# 1 -> {(2)} +# 2 -> {} - empty set +create table t2 (oref int, a int); +insert into t2 values + (1, NULL), + (2, NULL); + +select a, oref, + a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2; + +--echo This must show a trig_cond: +explain extended +select a, oref, + a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2; + +drop table t1, t2; + +create table t1 (a int, b int, primary key (a)); +insert into t1 values (1,1), (3,1),(100,1); +create table t2 (a int, b int); +insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0); + +select a,b, a in (select a from t1 where t1.b = t2.b union select a from +t1 where t1.b = t2.b) Z from t2 ; +select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ; +drop table t1, t2; + + +# +# BUG#24127: Incorrect results of row-based subqueries with NULLs on the left side. +# +create table t3 (a int); +insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 (a int, b int, oref int); +insert into t2 values (NULL,1, 100), (NULL,2, 100); + +create table t1 (a int, b int, c int, key(a,b)); +insert into t1 select 2*A, 2*A, 100 from t3; + +# First test index subquery engine +explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2; +select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2; + +# Then check that we do turn off 'ref' scans in the subquery +create table t4 (x int); +insert into t4 select A.a + 10*B.a from t1 A, t1 B; +explain extended + select a,b, oref, + (a,b) in (select a,b from t1,t4 where c=t2.oref) Z + from t2; +select a,b, oref, + (a,b) in (select a,b from t1,t4 where c=t2.oref) Z +from t2; + +drop table t1,t2,t3,t4; + +# More tests for tricky multi-column cases, where some of pushed-down +# equalities are used for index lookups and some arent. +create table t1 (oref char(4), grp int, ie1 int, ie2 int); +insert into t1 (oref, grp, ie1, ie2) values + ('aa', 10, 2, 1), + ('aa', 10, 1, 1), + ('aa', 20, 2, 1), + ('bb', 10, 3, 1), + ('cc', 10, 4, 2), + ('cc', 20, 3, 2), + + ('ee', 10, 2, 1), + ('ee', 10, 1, 2), + + ('ff', 20, 2, 2), + ('ff', 20, 1, 2); +create table t2 (oref char(4), a int, b int); +insert into t2 values + ('ee', NULL, 1), + ('bb', 2, 1), + ('ff', 2, 2), + ('cc', 3, NULL), + ('bb', NULL, NULL), + ('aa', 1, 1), + ('dd', 1, NULL); +alter table t1 add index idx(ie1,ie2); + +# cc 3 NULL NULL +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ; +insert into t2 values ('new1', 10,10); +insert into t1 values ('new1', 1234, 10, NULL); +# new1, 10, 10, NULL, +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10; +explain extended +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10; +drop table t1, t2; + +# Now test different column types: +create table t1 (oref char(4), grp int, ie int); +insert into t1 (oref, grp, ie) values + ('aa', 10, 2), + ('aa', 10, 1), + ('aa', 20, NULL), + + ('bb', 10, 3), + + ('cc', 10, 4), + ('cc', 20, NULL), + + ('ee', 10, NULL), + ('ee', 10, NULL), + + ('ff', 20, 2), + ('ff', 20, 1); + +create table t2 (oref char(4), a int); +insert into t2 values + ('ee', NULL), + ('bb', 2), + ('ff', 2), + ('cc', 3), + ('aa', 1), + ('dd', NULL), + ('bb', NULL); + +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); + +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); + + +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2; + +select oref, a from t2 where + a in (select min(ie) from t1 where oref=t2.oref group by grp); + +select oref, a from t2 where + a not in (select min(ie) from t1 where oref=t2.oref group by grp); + +# +update t1 set ie=3 where oref='ff' and ie=1; + +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by +grp) Z from t2; + + +select oref, a from t2 where a in (select min(ie) from t1 where +oref=t2.oref group by grp); + +select oref, a from t2 where a not in (select min(ie) from t1 where +oref=t2.oref group by grp); + +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by +grp having min(ie) > 1) Z from t2; + +select oref, a from t2 where a in (select min(ie) from t1 where +oref=t2.oref group by grp having min(ie) > 1); + +select oref, a from t2 where a not in (select min(ie) from t1 where +oref=t2.oref group by grp having min(ie) > 1); + +# +alter table t1 add index idx(ie); + +explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); + +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); + + +alter table t1 drop index idx; +alter table t1 add index idx(oref,ie); + +explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); + +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); + +explain +select oref, a, + a in (select min(ie) from t1 where oref=t2.oref + group by grp having min(ie) > 1) Z +from t2; + +select oref, a, + a in (select min(ie) from t1 where oref=t2.oref + group by grp having min(ie) > 1) Z +from t2; + +select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref + group by grp having min(ie) > 1); + +select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref + group by grp having min(ie) > 1); + +drop table t1,t2; + +create table t1 (oref char(4), grp int, ie1 int, ie2 int); +insert into t1 (oref, grp, ie1, ie2) values + ('aa', 10, 2, 1), + ('aa', 10, 1, 1), + ('aa', 20, 2, 1), + + ('bb', 10, 3, 1), + + ('cc', 10, 4, 2), + ('cc', 20, 3, 2), + + ('ee', 10, 2, 1), + ('ee', 10, 1, 2), + + ('ff', 20, 2, 2), + ('ff', 20, 1, 2); + +create table t2 (oref char(4), a int, b int); +insert into t2 values + ('ee', NULL, 1), + ('bb', 2, 1), + ('ff', 2, 2), + ('cc', 3, NULL), + ('bb', NULL, NULL), + ('aa', 1, 1), + ('dd', 1, NULL); + +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; + +select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref); + +select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref); + +select oref, a, b, + (a,b) in (select min(ie1),max(ie2) from t1 + where oref=t2.oref group by grp) Z +from t2; + +select oref, a, b from t2 where + (a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp); + +select oref, a, b from t2 where + (a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp); + +alter table t1 add index idx(ie1,ie2); + +explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; + +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; + +select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref); + +select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref); + +explain extended +select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2; + +drop table t1,t2; + +create table t1 (oref char(4), grp int, ie int primary key); +insert into t1 (oref, grp, ie) values + ('aa', 10, 2), + ('aa', 10, 1), + + ('bb', 10, 3), + + ('cc', 10, 4), + ('cc', 20, 5), + ('cc', 10, 6); + +create table t2 (oref char(4), a int); +insert into t2 values + ('ee', NULL), + ('bb', 2), + ('cc', 5), + ('cc', 2), + ('cc', NULL), + ('aa', 1), + ('bb', NULL); + +explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2; + +select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); + +select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref); + +explain +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2; + +select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2; + +drop table t1,t2; + +# +# BUG#24420: row-based IN suqueries with aggregation when the left operand +# of the subquery predicate may contain NULL values +# + +create table t1 (a int, b int); +insert into t1 values (0,0), (2,2), (3,3); +create table t2 (a int, b int); +insert into t2 values (1,1), (3,3); + +select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1; + +insert into t2 values (NULL,4); +select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1; + +drop table t1,t2; + +# +# Bug #24484: Aggregate function used in column list subquery gives erroneous +# error +# +CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t1 VALUES (1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'), + (2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'),(3,3,'j'), (3,2,'k'), (3,1,'l'), + (1,9,'m'); +CREATE TABLE t2 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b)); +INSERT INTO t2 SELECT * FROM t1; + +# Gives error, but should work since it is (a, b) is the PK so only one +# given match possible +SELECT a, MAX(b), (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) + as test FROM t1 GROUP BY a; +SELECT * FROM t1 GROUP by t1.a + HAVING (MAX(t1.b) > (SELECT MAX(t2.b) FROM t2 WHERE t2.c < t1.c + HAVING MAX(t2.b+t1.a) < 10)); + +SELECT a,b,c FROM t1 WHERE b in (9,3,4) ORDER BY b,c; + +SELECT a, MAX(b), + (SELECT COUNT(DISTINCT t.c) FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) + LIMIT 1) + as cnt, + (SELECT t.b FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) + as t_b, + (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) + as t_b, + (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) ORDER BY t.c LIMIT 1) + as t_b + FROM t1 GROUP BY a; + +SELECT a, MAX(b), + (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) as test + FROM t1 GROUP BY a; + + +DROP TABLE t1, t2; + +# The next three test cases must be executed with the IN=>EXISTS strategy +set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; + +# +# Bug #27870: crash of an equijoin query with WHERE condition containing +# a subquery predicate of the form <join attr> NOT IN (SELECT ...) +# + +CREATE TABLE t1 (a int); +CREATE TABLE t2 (b int, PRIMARY KEY(b)); +INSERT INTO t1 VALUES (1), (NULL), (4); +INSERT INTO t2 VALUES (3), (1),(2), (5), (4), (7), (6); + +EXPLAIN EXTENDED +SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1)); +SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1)); +SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4)); + +DROP TABLE t1,t2; + +# +# Bug #28375: crash for NOT IN subquery predicate when left operand becomes NULL +# + +CREATE TABLE t1 (id int); +CREATE TABLE t2 (id int PRIMARY KEY); +CREATE TABLE t3 (id int PRIMARY KEY, name varchar(10)); +INSERT INTO t1 VALUES (2), (NULL), (3), (1); +INSERT INTO t2 VALUES (234), (345), (457); +INSERT INTO t3 VALUES (222,'bbb'), (333,'ccc'), (111,'aaa'); + +EXPLAIN +SELECT * FROM t1 + WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 + WHERE t3.name='xxx' AND t2.id=t3.id); +SELECT * FROM t1 + WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 + WHERE t3.name='xxx' AND t2.id=t3.id); + +SELECT (t1.id IN (SELECT t2.id FROM t2,t3 + WHERE t3.name='xxx' AND t2.id=t3.id)) AS x + FROM t1; + +DROP TABLE t1,t2,t3; + +# +# Bug #22855: Optimizer doesn't rewrite NOT IN subselects to a correlated +# subquery +# +CREATE TABLE t1 (a INT NOT NULL); +INSERT INTO t1 VALUES (1),(-1), (65),(66); + +CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY); +INSERT INTO t2 VALUES (65),(66); + +SELECT a FROM t1 WHERE a NOT IN (65,66); +SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2); +EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2); + +DROP TABLE t1, t2; + +set @@optimizer_switch=@save_optimizer_switch; + +# +# Bug #34763: item_subselect.cc:1235:Item_in_subselect::row_value_transformer: +# Assertion failed, unexpected error message: +# ERROR 1247 (42S22): Reference '<list ref>' not supported (forward +# reference in item list) +# +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES(1); + +CREATE TABLE t2 (placeholder CHAR(11)); +INSERT INTO t2 VALUES("placeholder"); + +SELECT ROW(1, 2) IN (SELECT t1.a, 2) FROM t1 GROUP BY t1.a; +SELECT ROW(1, 2) IN (SELECT t1.a, 2 FROM t2) FROM t1 GROUP BY t1.a; + +DROP TABLE t1, t2; + +# +# Bug #36005: crash in subselect with single row +# (subselect_single_select_engine::exec) +# + +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2),(3); +CREATE TABLE t2 SELECT * FROM t1; + +SELECT 1 FROM t1 WHERE t1.a NOT IN (SELECT 1 FROM t1, t2 WHERE 0); + +DROP TABLE t1, t2; + +# +# Bug 2198 +# + +create table t1 (a int, b decimal(13, 3)); +insert into t1 values (1, 0.123); +--disable_ps2_protocol +select a, (select max(b) from t1) into outfile "../../tmp/subselect.out.file.1" from t1; +--enable_ps2_protocol +delete from t1; +load data infile "../../tmp/subselect.out.file.1" into table t1; +select * from t1; +drop table t1; +let $datadir=`select @@datadir`; +--remove_file $MYSQLTEST_VARDIR/tmp/subselect.out.file.1 + +# +# Bug #37894: Assertion in init_read_record_seq in handler.h line 1444 +# + +CREATE TABLE t1 ( + pk INT PRIMARY KEY, + int_key INT, + varchar_key VARCHAR(5) UNIQUE, + varchar_nokey VARCHAR(5) +); +INSERT INTO t1 VALUES (9, 7,NULL,NULL), (10,8,'p' ,'p'); + +SELECT varchar_nokey +FROM t1 +WHERE NULL NOT IN ( + SELECT INNR.pk FROM t1 AS INNR2 + LEFT JOIN t1 AS INNR ON ( INNR2.int_key = INNR.int_key ) + WHERE INNR.varchar_key > 'n{' +); + +DROP TABLE t1; + +# +# Bug #39069: <row constructor> IN <table-subquery> seriously messed up +# + +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1), (2), (11); + +--echo # 2nd and 3rd columns should be same +SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1 GROUP BY t1.a; +SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1 GROUP BY t1.a; +SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1; +SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1; + +# The x alias is used below to workaround bug #40674. +# Regression tests for sum function on outer column in subselect from dual: +SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 22), ROW(11, 12) IN (SELECT MAX(x), 22) FROM t1; +--echo # 2nd and 3rd columns should be same +EXPLAIN SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 12), ROW(11, 12) IN (SELECT MAX(x), 12) FROM t1; +SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 12), ROW(11, 12) IN (SELECT MAX(x), 12) FROM t1; + +DROP TABLE t1; + +#enable after fix MDEV-28585 +--disable_view_protocol +--echo # both columns should be same +SELECT ROW(1,2) = (SELECT NULL, NULL), ROW(1,2) IN (SELECT NULL, NULL); +SELECT ROW(1,2) = (SELECT 1, NULL), ROW(1,2) IN (SELECT 1, NULL); +SELECT ROW(1,2) = (SELECT NULL, 2), ROW(1,2) IN (SELECT NULL, 2); +SELECT ROW(1,2) = (SELECT NULL, 1), ROW(1,2) IN (SELECT NULL, 1); +SELECT ROW(1,2) = (SELECT 1, 1), ROW(1,2) IN (SELECT 1, 1); +SELECT ROW(1,2) = (SELECT 1, 2), ROW(1,2) IN (SELECT 1, 2); +--enable_view_protocol + +# +# Bug #37362 Crash in do_field_eq +# +# Note that currently this test produces wrong output, see MBug#430669. +# +CREATE TABLE t1 (a INT, b INT, c INT); +INSERT INTO t1 VALUES (1,1,1), (1,1,1); + +--error 1054 +EXPLAIN EXTENDED + SELECT c FROM + ( SELECT + (SELECT COUNT(a) FROM + (SELECT COUNT(b) FROM t1) AS x GROUP BY c + ) FROM t1 GROUP BY b + ) AS y; +SHOW WARNINGS; + +DROP TABLE t1; + + +--echo End of 5.0 tests + +--echo # +--echo # BUG#36896: Server crash on SELECT FROM DUAL +--echo # +create table t1 (a int); +select 1 as res from dual where (1) in (select * from t1); +drop table t1; + +# +# BUG#36135 "void Diagnostics_area::set_eof_status(THD*): Assertion `!is_set()' failed." +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); + +create table t1 ( + a int(11) default null, + b int(11) default null, + key (a) +); +# produce numbers 0..999 +insert into t1 select A.a+10*(B.a+10*C.a),A.a+10*(B.a+10*C.a) from t0 A, t0 B, t0 C; + +create table t2 (a int(11) default null); +insert into t2 values (0),(1); + +create table t3 (a int(11) default null); +insert into t3 values (0),(1); + +create table t4 (a int(11) default null); +insert into t4 values (0),(1); + +create table t5 (a int(11) default null); +insert into t5 values (0),(1),(0),(1); + +# this must not fail assertion +--error 1242 +select * from t2, t3 +where + t2.a < 10 and + t3.a+1 = 2 and + t3.a in (select t1.b from t1 + where t1.a+1=t1.a+1 and + t1.a < (select t4.a+10 + from t4, t5 limit 2)); + +drop table t0, t1, t2, t3, t4, t5; + +--echo # +--echo # BUG#48177 - SELECTs with NOT IN subqueries containing NULL +--echo # values return too many records +--echo # + +CREATE TABLE t1 ( + i1 int DEFAULT NULL, + i2 int DEFAULT NULL +) ; + +INSERT INTO t1 VALUES (1, NULL); +INSERT INTO t1 VALUES (2, 3); +INSERT INTO t1 VALUES (4, NULL); +INSERT INTO t1 VALUES (4, 0); +INSERT INTO t1 VALUES (NULL, NULL); + +CREATE TABLE t2 ( + i1 int DEFAULT NULL, + i2 int DEFAULT NULL +) ; + +INSERT INTO t2 VALUES (4, NULL); +INSERT INTO t2 VALUES (5, 0); + +--echo +--echo Data in t1 +SELECT i1, i2 FROM t1; + +--echo +--echo Data in subquery (should be filtered out) +SELECT i1, i2 FROM t2 ORDER BY i1; + +FLUSH STATUS; +set @save_optimizer_switch2=@@optimizer_switch; +set optimizer_switch='subquery_cache=off'; + +--disable_ps2_protocol +--echo +SELECT i1, i2 +FROM t1 +WHERE (i1, i2) + NOT IN (SELECT i1, i2 FROM t2); + +--echo +--echo # Check that the subquery only has to be evaluated once +--echo # for all-NULL values even though there are two (NULL,NULL) records +--echo # Baseline: +SHOW STATUS LIKE '%Handler_read_rnd_next'; + +--echo +INSERT INTO t1 VALUES (NULL, NULL); +FLUSH STATUS; + +--echo +SELECT i1, i2 +FROM t1 +WHERE (i1, i2) + NOT IN (SELECT i1, i2 FROM t2); + +--echo +--echo # Handler_read_rnd_next should be one more than baseline +--echo # (read record from t1, but do not read from t2) +SHOW STATUS LIKE '%Handler_read_rnd_next'; +--enable_ps2_protocol + +set @@optimizer_switch=@save_optimizer_switch2; +DROP TABLE t1,t2; + +--echo End of 5.1 tests + +# +# Test for the problem with using sj-materialization when subquery's select +# list element SCOL is covered by equality propagation and has preceding equal +# column PCOL which belongs to a table within the the semi-join nest: SJM-Scan +# process should unpack column value not to SCOL but rather to PCOL, as +# substitute_best_equal has made all conditions to refer to PCOL. +# +CREATE TABLE t1 ( + a int(11) NOT NULL, + b int(11) NOT NULL, + c datetime default NULL, + PRIMARY KEY (a), + KEY idx_bc (b,c) +); + +INSERT INTO t1 VALUES +(406989,67,'2006-02-23 17:08:46'), (150078,67,'2005-10-26 11:17:45'), +(406993,67,'2006-02-27 11:20:57'), (245655,67,'2005-12-08 15:59:08'), +(406994,67,'2006-02-27 11:26:46'), (256,67,NULL), +(398341,67,'2006-02-20 04:48:44'), (254,67,NULL),(1120,67,NULL), +(406988,67,'2006-02-23 17:07:22'), (255,67,NULL), +(398340,67,'2006-02-20 04:38:53'),(406631,67,'2006-02-23 10:49:42'), +(245653,67,'2005-12-08 15:59:07'),(406992,67,'2006-02-24 16:47:18'), +(245654,67,'2005-12-08 15:59:08'),(406995,67,'2006-02-28 11:55:00'), +(127261,67,'2005-10-13 12:17:58'),(406991,67,'2006-02-24 16:42:32'), +(245652,67,'2005-12-08 15:58:27'),(398545,67,'2006-02-20 04:53:13'), +(154504,67,'2005-10-28 11:53:01'),(9199,67,NULL),(1,67,'2006-02-23 15:01:35'), +(223456,67,NULL),(4101,67,NULL),(1133,67,NULL), +(406990,67,'2006-02-23 18:01:45'),(148815,67,'2005-10-25 15:34:17'), +(148812,67,'2005-10-25 15:30:01'),(245651,67,'2005-12-08 15:58:27'), +(154503,67,'2005-10-28 11:52:38'); + +create table t11 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 asc; +create table t12 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 desc; +create table t21 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 asc; +create table t22 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 desc; + +set @@optimizer_switch=@save_optimizer_switch; +set @@optimizer_switch='materialization=off'; + +update t22 set c = '2005-12-08 15:58:27' where a = 255; +explain select t21.* from t21,t22 where t21.a = t22.a and +t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a; +select t21.* from t21,t22 where t21.a = t22.a and +t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a; + +set @@optimizer_switch=@save_optimizer_switch; + +drop table t1, t11, t12, t21, t22; + +# +# Test sj-materialization re-execution. The test isn't meaningful (materialized +# table stays the same across all executions) because it's hard to create a +# dataset that would verify correct re-execution without hitting BUG#31480 +# +create table t1(a int); +insert into t1 values (0),(1); + +set @@optimizer_switch='firstmatch=off,materialization=off'; +explain +select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X; +select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X; +set @@optimizer_switch=@save_optimizer_switch; + +drop table t1; + +# +# Test confluent duplicate weedout +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 as select * from t0; +insert into t1 select a+10 from t0; +set @@optimizer_switch='firstmatch=off,materialization=off'; +insert into t0 values(2); +explain select * from t1 where 2 in (select a from t0); +select * from t1 where 2 in (select a from t0); +set @@optimizer_switch=@save_optimizer_switch; +set @@optimizer_switch='materialization=off'; +explain select * from t1 where 2 in (select a from t0); +select * from t1 where 2 in (select a from t0); +set @@optimizer_switch=@save_optimizer_switch; + + +set @@optimizer_switch=@save_optimizer_switch; +set @@optimizer_switch='materialization=off'; + +# +# FirstMatch referring to a derived table +# +set @tmp_optimizer_switch=@@optimizer_switch; +set optimizer_switch='derived_merge=off,derived_with_keys=off'; +explain select * from (select a from t0) X where a in (select a from t1); +drop table t0, t1; +set optimizer_switch=@tmp_optimizer_switch; + +# +# LooseScan: Check if we can pick it together with range access +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); + +create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2)); +insert into t1 select A.a+10*(B.a+10*C.a), 0, 0, 'filler' from t0 A, t0 B, t0 C; +insert into t1 select * from t1 where kp1 < 20; + +create table t3 (a int); +insert into t3 select A.a + 10*B.a from t0 A, t0 B; + +explain select * from t3 where a in (select kp1 from t1 where kp1<20); + +create table t4 (pk int primary key); +insert into t4 select a from t3; + +explain select * from t3 where a in (select t1.kp1 from t1,t4 where kp1<20 +and t4.pk=t1.c); + +drop table t1, t3, t4; + +set @@optimizer_switch=@save_optimizer_switch; + +# +# Test if we handle duplicate elimination temptable overflowing to disk +# +create table t1 (a int) as select * from t0 where a < 5; + +set @save_max_heap_table_size=@@max_heap_table_size; +set @@optimizer_switch='firstmatch=off,materialization=off'; +set @@max_heap_table_size= 16384; + +explain select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a); +flush status; +--disable_ps2_protocol +select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a); +--enable_ps2_protocol +show status like 'Created_tmp_disk_tables'; +set @save_max_heap_table_size=@@max_heap_table_size; +set @@optimizer_switch=@save_optimizer_switch; +drop table t0, t1; + +# +# Materialize + Scan + ref access to the subsequent table based on scanned +# value +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2(a int); +insert into t2 values (1),(2); +create table t3 ( a int , filler char(100), key(a)); +insert into t3 select A.a + 10*B.a, 'filler' from t0 A, t0 B; +explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10); +select * from t3 where a in (select a from t2); + +drop table t0, t2, t3; + +# +# DATETIME type checks +# +set @@optimizer_switch='firstmatch=off,materialization=off'; +create table t1 (a date); +insert into t1 values ('2008-01-01'),('2008-01-01'),('2008-02-01'),('2008-02-01'); +create table t2 (a int); +insert into t2 values (1),(2); +create table t3 (a char(10)); +insert into t3 select * from t1; +insert into t3 values (1),(2); +explain select * from t2 where a in (select a from t1); +explain select * from t2 where a in (select a from t2); +explain select * from t2 where a in (select a from t3); +explain select * from t1 where a in (select a from t3); +drop table t1, t2, t3; +create table t1 (a decimal); +insert into t1 values (1),(2); +explain select * from t1 where a in (select a from t1); +drop table t1; +set @@optimizer_switch=@save_optimizer_switch; + +set @@optimizer_switch=@save_optimizer_switch; +set @@optimizer_switch='materialization=off'; + +# +# SJ-Materialization-scan for non-first table +# +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t2 as select * from t1; +create table t3 (a int, b int, filler char(100), key(a)); +insert into t3 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t1 A, t1 B, t1 C; +explain select * from t1, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30) and t1.a =3; + +# +# Verify that straight_join modifier in parent or child prevents flattening +# +explain select straight_join * from t1 A, t1 B where A.a in (select a from t2); +explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B); +explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B); +explain select straight_join * from t2 X, t2 Y +where X.a in (select straight_join A.a from t1 A, t1 B); + +# +# SJ-Materialization scan + first table being system const table +# +create table t0 (a int, b int); +insert into t0 values(1,1); +explain select * from t0, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30); +create table t4 as select a as x, a as y from t1; +explain select * from t0, t3 where (t3.a, t3.b) in (select x,y from t4) and (t3.a < 10 or t3.a >30); +drop table t0,t1,t2,t3,t4; + +# +# LooseScan with ref access +# +create table t0 (a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, b int, filler char(100), key(a,b)); +insert into t1 select A.a, B.a, 'filler' from t0 A, t0 B; +create table t2 as select * from t1; + +explain select * from t2 where a in (select b from t1 where a=3); +explain select * from t2 where (b,a) in (select a,b from t1 where a=3); + +drop table t1,t2; + +set @@optimizer_switch=@save_optimizer_switch; + +# +# Multi-column sj-materialization with lookups +# +create table t1 (a int, b int); +insert into t1 select a,a from t0; +create table t2 (a int, b int); +insert into t2 select A.a + 10*B.a, A.a + 10*B.a from t0 A, t0 B; + +set @@optimizer_switch='firstmatch=off,materialization=off'; +explain select * from t1 where (a,b) in (select a,b from t2); + +# A smallish test if find_best() still works for semi-join optimization: +set @save_optimizer_search_depth=@@optimizer_search_depth; +set @@optimizer_search_depth=63; +explain select * from t1 where (a,b) in (select a,b from t2); +set @@optimizer_search_depth=@save_optimizer_search_depth; +set @@optimizer_switch=@save_optimizer_switch; + +drop table t0, t1, t2; + +set @@optimizer_switch='materialization=off'; + +# +# Primitive SJ-Materialization tests for DECIMAL and DATE +# +create table t0 (a decimal(4,2)); +insert into t0 values (10.24), (22.11); +create table t1 as select * from t0; +insert into t1 select * from t0; +explain select * from t0 where a in (select a from t1); +select * from t0 where a in (select a from t1); +drop table t0, t1; + +create table t0(a date); +insert into t0 values ('2008-01-01'),('2008-02-02'); +create table t1 as select * from t0; +insert into t1 select * from t0; +explain select * from t0 where a in (select a from t1); +select * from t0 where a in (select a from t1); +drop table t0, t1; + +# +# Fix a trivial crash with SJ-Materialization lookup, multiple tables in the +# subquery, and a condition on some of inner tables but not others +# +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 as select a as a, a as b, a as c from t0 where a < 3; +create table t2 as select a as a, a as b from t0 where a < 3; +insert into t2 select * from t2; + +explain select * from t1 where (a,b,c) in (select X.a, Y.a, Z.a from t2 X, t2 Y, t2 Z where X.b=33); + +drop table t0,t1,t2; + +set @@optimizer_switch=@save_optimizer_switch; + +--echo +--echo BUG#37842: Assertion in DsMrr_impl::dsmrr_init, at handler.cc:4307 +--echo +CREATE TABLE t1 ( + `pk` int(11) NOT NULL AUTO_INCREMENT, + `int_key` int(11) DEFAULT NULL, + PRIMARY KEY (`pk`), + KEY `int_key` (`int_key`) +) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,9),(2,3),(3,8),(4,6),(5,9),(6,5),(7,5),(8,9),(9,1),(10,10); +SELECT `pk` FROM t1 AS OUTR WHERE `int_key` = ALL ( + SELECT `int_key` FROM t1 AS INNR WHERE INNR . `pk` >= 9 +); +DROP TABLE t1; + +--echo +--echo BUG#40118 Crash when running Batched Key Access and requiring one match for each key +--echo +create table t0(a int); +insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); +create table t1 (a int, key(a)); +insert into t1 select * from t0; +alter table t1 add b int not null, add filler char(200); +insert into t1 select * from t1; +insert into t1 select * from t1; + +set @save_join_cache_level=@@join_cache_level; +set join_cache_level=6; +select * from t0 where t0.a in (select t1.a from t1 where t1.b=0); +set join_cache_level=@save_join_cache_level; +drop table t0, t1; + +--echo # +--echo # BUG#32665 Query with dependent subquery is too slow +--echo # +create table t1 ( + idIndividual int primary key +); +insert into t1 values (1),(2); + +create table t2 ( + idContact int primary key, + contactType int, + idObj int +); +insert into t2 values (1,1,1),(2,2,2),(3,3,3); + +create table t3 ( + idAddress int primary key, + idContact int, + postalStripped varchar(100) +); + +insert into t3 values (1,1, 'foo'), (2,2,'bar'); + +--echo The following must be converted to a semi-join: +set @save_optimizer_switch=@@optimizer_switch; +set @@optimizer_switch='materialization=off'; +explain extended SELECT a.idIndividual FROM t1 a +WHERE a.idIndividual IN + ( SELECT c.idObj FROM t3 cona + INNER JOIN t2 c ON c.idContact=cona.idContact + WHERE cona.postalStripped='T2H3B2' + ); +set @@optimizer_switch=@save_optimizer_switch; +drop table t1,t2,t3; + +--echo # +--echo # BUG#47367 Crash in Name_resolution_context::process_error +--echo # + +SET SESSION optimizer_switch = 'semijoin=off'; +CREATE TABLE t1 (f1 INTEGER); +CREATE TABLE t2 LIKE t1; +delimiter |; +CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END| +delimiter ;| +CALL p1; +ALTER TABLE t2 CHANGE COLUMN f1 my_column INT; +CALL p1; +DROP PROCEDURE p1; +--echo # Restore the original column list of table t2: +ALTER TABLE t2 CHANGE COLUMN my_column f1 INT; + +SET SESSION optimizer_switch = 'semijoin=on'; +delimiter |; +--echo # Recreate procedure so that we eliminate any caching effects +CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END| +delimiter ;| +CALL p1; +ALTER TABLE t2 CHANGE COLUMN f1 my_column INT; +--error ER_BAD_FIELD_ERROR +CALL p1; +DROP PROCEDURE p1; +DROP TABLE t1, t2; + +--echo # +--echo # fix of lp:824425 (prohibiting subqueries in row in +--echo # left part of IN/ALL/ANY) +--echo # + +CREATE TABLE t1 ( a int) ; +INSERT INTO t1 VALUES (20),(30); + +CREATE TABLE t2 (a int) ; +INSERT INTO t2 VALUES (3),(9); + +CREATE TABLE t3 ( a int, b int) ; +INSERT INTO t3 VALUES (20,5),(30,6); + +set @optimizer_switch_save=@@optimizer_switch; +SET SESSION optimizer_switch='semijoin=OFF,in_to_exists=OFF,materialization=ON,partial_match_rowid_merge=ON,partial_match_table_scan=OFF'; + +SELECT * FROM t1 +WHERE ( + ( SELECT a FROM t2 WHERE a = 9 ) +) NOT IN ( + SELECT b + FROM t3 +); +explain extended +SELECT * FROM t1 +WHERE ( + ( SELECT a FROM t2 WHERE a = 9 ) +) NOT IN ( + SELECT b + FROM t3 +); + +--error ER_NOT_SUPPORTED_YET +SELECT * FROM t1 +WHERE ( + ( SELECT a FROM t2 WHERE a = 9 ), + ( SELECT a FROM t2 WHERE a = 3 ) +) NOT IN ( + SELECT b , a + FROM t3 +); +set optimizer_switch=@optimizer_switch_save; + +drop table t1,t2,t3; + +--echo End of 5.3 tests + +--echo # +--echo # BUG#48920: COUNT DISTINCT returns 1 for NULL values when in a subquery +--echo # in the select list +--echo # + +--echo +CREATE TABLE t1 ( + i int(11) DEFAULT NULL, + v varchar(1) DEFAULT NULL +); + +--echo +INSERT INTO t1 VALUES (8,'v'); +INSERT INTO t1 VALUES (9,'r'); +INSERT INTO t1 VALUES (NULL,'y'); + +--echo +CREATE TABLE t2 ( + i int(11) DEFAULT NULL, + v varchar(1) DEFAULT NULL, + KEY i_key (i) +); + +--echo +INSERT INTO t2 VALUES (NULL,'r'); +INSERT INTO t2 VALUES (0,'c'); +INSERT INTO t2 VALUES (0,'o'); +INSERT INTO t2 VALUES (2,'v'); +INSERT INTO t2 VALUES (7,'c'); + +--echo +SELECT i, v, (SELECT COUNT(DISTINCT i) + FROM t1 + WHERE v = t2.v) as subsel +FROM t2; + +--echo +EXPLAIN EXTENDED +SELECT i, v, (SELECT COUNT(DISTINCT i) + FROM t1 + WHERE v = t2.v) as subsel +FROM t2; + +DROP TABLE t1,t2; + +--echo End of 5.6 tests |