Note 1276 Field or reference 'test.t1.a' of SELECT #3 was resolved in SELECT #2
Note 1276 Field or reference 'test.t1.c' of SELECT #3 was resolved in SELECT #2
Error 1054 Unknown column 'c' in 'field list'
Note 1003 select `c` AS `c` from (select (select count(`test`.`t1`.`a`) AS `COUNT(a)` from dual group by `c`) AS `(SELECT COUNT(a) FROM
Note 1003 select `c` AS `c` from (select (select count(`test`.`t1`.`a`) AS `COUNT(a)` from (select count(`test`.`t1`.`b`) AS `COUNT(b)` from `test`.`t1`) `x` group by `t1`.`c`) AS `(SELECT COUNT(a) FROM
(SELECT COUNT(b) FROM t1) AS x GROUP BY c
)` from `test`.`t1` group by `test`.`t1`.`b`) `y`
DROP TABLE t1;
...
...
@@ -1122,7 +1122,7 @@ 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);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range kp1 kp1 5 NULL 48 Using index condition; Using where; Using MRR; LooseScan
1 PRIMARY t1 range kp1 kp1 5 NULL 48 Using index condition; Using MRR; LooseScan
@@ -54,7 +54,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
Warnings:
Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1
Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select 1 AS `1` from dual having ((select '1' AS `a`) = 1)
Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having ((select '1' AS `a`) = 1)
SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1;
1
1
...
...
@@ -207,7 +207,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings:
Note 1003 select (select `test`.`t3`.`a` AS `a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,'2' AS `a` from dual
Note 1003 select (select `test`.`t3`.`a` AS `a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,'2' AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a
2
...
...
@@ -318,7 +318,7 @@ NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1276 Field or reference 'test.t2.a' of SELECT #2 was resolved in SELECT #1
Note 1276 Field or reference 'test.t2.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select (select '2' AS `a` from dual where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` AS `a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2`
Note 1003 select (select '2' AS `a` from `test`.`t1` where ('2' = `test`.`t2`.`a`) union select `test`.`t5`.`a` AS `a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2`
select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
ERROR 21000: Subquery returns more than 1 row
create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq));
...
...
@@ -739,7 +739,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = <cache>((1 + 1)))
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = (1 + 1))
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 index NULL id 5 NULL 2 100.00 Using where; Using index
...
...
@@ -1437,7 +1437,7 @@ explain extended (select * from t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 (select 'tttt' AS `s1` from dual)
Note 1003 (select 'tttt' AS `s1` from `test`.`t1`)
(select * from t1);
s1
tttt
...
...
@@ -1625,7 +1625,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION t1 system NULL NULL NULL NULL 1 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 select 'e' AS `s1` from dual where 1
Note 1003 select 'e' AS `s1` from `test`.`t1` where 1
1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t12` join `test`.`t1` where ((`test`.`t10`.`pk` = `test`.`t1`.`a`) and (`test`.`t12`.`pk` = `test`.`t10`.`a`))
...
...
@@ -545,7 +545,7 @@ EXPLAIN EXTENDED SELECT vkey FROM t0 WHERE pk IN
(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL PRIMARY NULL NULL NULL 5 100.00
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t0.pk 1 100.00 Using where
1 PRIMARY t12 eq_ref PRIMARY PRIMARY 4 test.t10.a 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t10` join `test`.`t12` join `test`.`t1` where ((`test`.`t10`.`pk` = `test`.`t1`.`a`) and (`test`.`t12`.`pk` = `test`.`t10`.`a`))
...
...
@@ -549,7 +549,7 @@ EXPLAIN EXTENDED SELECT vkey FROM t0 WHERE pk IN
(SELECT t1.pk FROM t0 t1 JOIN t0 t2 ON t2.vkey = t1.vnokey);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL PRIMARY NULL NULL NULL 5 100.00
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t0.pk 1 100.00 Using where; Using join buffer