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Commit 3a00dc73 authored by pem@mysql.com's avatar pem@mysql.com
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Updating subselect results after SUBSELECT was changed into SUBQUERY.

parent d29557cb
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Showing with 24 additions and 24 deletions
mysql-test/r/subselect.result
View file @ 3a00dc73
......@@ -24,7 +24,7 @@ SELECT (SELECT (SELECT 0 UNION SELECT 0));
explain SELECT (SELECT (SELECT 0 UNION SELECT 0));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
3 SUBSELECT NULL NULL NULL NULL NULL NULL NULL No tables used
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
4 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1247 Select 2 was reduced during optimisation
......@@ -40,7 +40,7 @@ Reference 'a' not supported (forward reference in item list)
EXPLAIN SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 1
3 DEPENDENT SUBSELECT NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1;
1
......@@ -172,9 +172,9 @@ a b
explain (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBSELECT t3 ALL NULL NULL NULL NULL 3 Using filesort
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using filesort
3 UNION t4 ALL NULL NULL NULL NULL 3 Using where; Using filesort
4 SUBSELECT t2 ALL NULL NULL NULL NULL 2
4 SUBQUERY t2 ALL NULL NULL NULL NULL 2
select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a
3 1
......@@ -188,7 +188,7 @@ explain select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived3> system NULL NULL NULL NULL 1
3 DERIVED t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBSELECT t3 ALL NULL NULL NULL NULL 3 Using where; Using filesort
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using where; Using filesort
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
......@@ -205,8 +205,8 @@ b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)
explain select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t4 ALL NULL NULL NULL NULL 3
2 DEPENDENT SUBSELECT t2 ALL NULL NULL NULL NULL 2
3 DEPENDENT SUBSELECT t3 ALL NULL NULL NULL NULL 3 Using where
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using where
select * from t3 where exists (select * from t2 where t2.b=t3.a);
a
7
......@@ -281,7 +281,7 @@ NULL 1
explain select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
2 DEPENDENT SUBSELECT t1 system NULL NULL NULL NULL 1
2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1
3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 Using where
select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
Subselect returns more than 1 record
......@@ -324,9 +324,9 @@ INSERT INTO t8 (pseudo,email) VALUES ('2joce1','2test1');
EXPLAIN SELECT pseudo,(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce')) FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t8 const PRIMARY PRIMARY 35 const 1
4 SUBSELECT t8 const PRIMARY PRIMARY 35 1
2 SUBSELECT t8 const PRIMARY PRIMARY 35 const 1
3 SUBSELECT t8 const PRIMARY PRIMARY 35 1
4 SUBQUERY t8 const PRIMARY PRIMARY 35 1
2 SUBQUERY t8 const PRIMARY PRIMARY 35 const 1
3 SUBQUERY t8 const PRIMARY PRIMARY 35 1
SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM
t8 WHERE pseudo='joce');
Cardinality error (more/less than 1 columns)
......@@ -354,7 +354,7 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBSELECT t1 index NULL PRIMARY 41 NULL 2 Using where; Using index
2 SUBQUERY t1 index NULL PRIMARY 41 NULL 2 Using where; Using index
SELECT DISTINCT date FROM t1 WHERE date='2002-08-03';
date
2002-08-03
......@@ -371,7 +371,7 @@ Subselect returns more than 1 record
EXPLAIN SELECT 1 FROM t1 WHERE 1=(SELECT 1 UNION SELECT 1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL topic 3 NULL 2 Using index
2 SUBSELECT NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
drop table t1;
CREATE TABLE `t1` (
......@@ -486,7 +486,7 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1
2 SUBSELECT NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
......@@ -660,14 +660,14 @@ id
EXPLAIN SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ref id id 5 const 1 Using where; Using index
3 SUBSELECT NULL NULL NULL NULL NULL NULL NULL No tables used
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1247 Select 3 was reduced during optimisation
Note 1247 Select 2 was reduced during optimisation
EXPLAIN SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL id 5 NULL 2 Using where; Using index
2 DEPENDENT SUBSELECT NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL No tables used
SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3);
id
......@@ -810,7 +810,7 @@ a t1.a in (select t2.a from t2)
explain SELECT t1.a, t1.a in (select t2.a from t2) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 Using index
2 DEPENDENT SUBSELECT t2 index NULL a 5 NULL 3 Using where; Using index
2 DEPENDENT SUBQUERY t2 index NULL a 5 NULL 3 Using where; Using index
drop table t1,t2;
create table t1 (a float);
select 10.5 IN (SELECT * from t1 LIMIT 1);
......@@ -918,15 +918,15 @@ CREATE TABLE t1 (a int(1));
EXPLAIN SELECT (SELECT RAND() FROM t1) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBSELECT t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
EXPLAIN SELECT (SELECT ENCRYPT('test') FROM t1) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBSELECT t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
EXPLAIN SELECT (SELECT BENCHMARK(1,1) FROM t1) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBSELECT t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
drop table t1;
CREATE TABLE `t1` (
`mot` varchar(30) character set latin1 NOT NULL default '',
......@@ -1009,8 +1009,8 @@ explain select a,(select (select rand() from t1 limit 1) from t1 limit 1)
from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
2 UNCACHEABLE SUBSELECT t1 ALL NULL NULL NULL NULL 3
3 UNCACHEABLE SUBSELECT t1 ALL NULL NULL NULL NULL 3
2 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3
3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3
drop table t1;
select t1.Continent, t2.Name, t2.Population from t1 LEFT JOIN t2 ON t1.Code = t2.Country where t2.Population IN (select max(t2.Population) AS Population from t2, t1 where t2.Country = t1.Code group by Continent);
Table 'test.t1' doesn't exist
......@@ -1062,7 +1062,7 @@ SELECT 0 IN (SELECT 1 FROM t1 a);
EXPLAIN SELECT 0 IN (SELECT 1 FROM t1 a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBSELECT NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
INSERT INTO t1 (pseudo) VALUES ('test1');
SELECT 0 IN (SELECT 1 FROM t1 a);
0 IN (SELECT 1 FROM t1 a)
......@@ -1070,7 +1070,7 @@ SELECT 0 IN (SELECT 1 FROM t1 a);
EXPLAIN SELECT 0 IN (SELECT 1 FROM t1 a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 DEPENDENT SUBSELECT NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
drop table t1;
CREATE TABLE `t1` (
`i` int(11) NOT NULL default '0',
......
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