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mysql-test/r/subselect.result: test of derived table external field bug mysql-test/t/subselect.test: test of derived table external field bug sql/sql_derived.cc: lex->current_select always should point on current SELECT_LEX_NODE during query execution
245 lines
10 KiB
Text
245 lines
10 KiB
Text
select (select 2);
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(select 2)
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2
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SELECT (SELECT 1) UNION SELECT (SELECT 2);
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(SELECT 1)
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1
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2
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SELECT (SELECT (SELECT 0 UNION SELECT 0));
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(SELECT (SELECT 0 UNION SELECT 0))
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0
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drop table if exists t1,t2,t3,t4,t5,attend,clinic,inscrit;
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create table t1 (a int);
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create table t2 (a int, b int);
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create table t3 (a int);
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create table t4 (a int, b int);
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insert into t1 values (2);
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insert into t2 values (1,7),(2,7);
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insert into t4 values (4,8),(3,8),(5,9);
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select (select a from t1 where t1.a=t2.a), a from t2;
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(select a from t1 where t1.a=t2.a) a
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NULL 1
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2 2
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select (select a from t1 where t1.a=t2.b), a from t2;
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(select a from t1 where t1.a=t2.b) a
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NULL 1
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NULL 2
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select (select a from t1), a from t2;
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(select a from t1) a
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2 1
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2 2
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select (select a from t3), a from t2;
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(select a from t3) a
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NULL 1
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NULL 2
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select * from t2 where t2.a=(select a from t1);
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a b
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2 7
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insert into t3 values (6),(7),(3);
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select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1);
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a b
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1 7
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2 7
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select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
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union (select * from t4 order by a limit 2) limit 3;
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a b
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1 7
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2 7
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3 8
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select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
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union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
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a b
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1 7
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2 7
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3 8
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4 8
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explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
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union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 2 where used
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2 SUBSELECT t3 ALL NULL NULL NULL NULL 3 Using filesort
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3 UNION t4 ALL NULL NULL NULL NULL 3 where used; Using filesort
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4 SUBSELECT t2 ALL NULL NULL NULL NULL 2
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select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
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(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a
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3 1
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7 2
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select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
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(select * from t2 where a>1) as tt;
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(select t3.a from t3 where a<8 order by 1 desc limit 1) a
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7 2
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explain select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
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(select * from t2 where a>1) as tt;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived3> system NULL NULL NULL NULL 1
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3 DERIVED t2 ALL NULL NULL NULL NULL 2 where used
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2 SUBSELECT t3 ALL NULL NULL NULL NULL 3 where used; Using filesort
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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);
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a
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2
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select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1);
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a
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2
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select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1);
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a
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select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
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b (select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)
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8 7.5000
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8 4.5000
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9 7.5000
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explain select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t4 ALL NULL NULL NULL NULL 3
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2 DEPENDENT SUBSELECT t2 ALL NULL NULL NULL NULL 2
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3 DEPENDENT SUBSELECT t3 ALL NULL NULL NULL NULL 3 where used
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select * from t3 where exists (select * from t2 where t2.b=t3.a);
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a
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7
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select * from t3 where not exists (select * from t2 where t2.b=t3.a);
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a
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6
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3
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insert into t4 values (12,7),(1,7),(10,9),(9,6),(7,6),(3,9);
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select b,max(a) as ma from t4 group by b having b < (select max(t2.a)
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from t2 where t2.b=t4.b);
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b ma
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select b,max(a) as ma from t4 group by b having b >= (select max(t2.a)
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from t2 where t2.b=t4.b);
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b ma
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7 12
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create table t5 (a int);
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select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
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(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a
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NULL 1
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2 2
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insert into t5 values (5);
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select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
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(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a
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NULL 1
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2 2
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insert into t5 values (2);
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select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
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(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a) a
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NULL 1
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2 2
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explain select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 2
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2 DEPENDENT SUBSELECT t1 system NULL NULL NULL NULL 1 where used
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3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 where used
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select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
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Subselect returns more than 1 record
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create table attend (patient_uq int, clinic_uq int, index i1 (clinic_uq));
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create table clinic( uq int primary key, name char(25));
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insert into clinic values(1,"Oblastnaia bolnitsa"),(2,"Bolnitsa Krasnogo Kresta");
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insert into attend values (1,1),(1,2),(2,2),(1,3);
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select * from attend where exists (select * from clinic where uq = clinic_uq);
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patient_uq clinic_uq
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1 1
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1 2
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2 2
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select * from t1 where a= (select a from t2,t4 where t2.b=t4.b);
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Column: 'a' in field list is ambiguous
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drop table if exists t1,t2,t3;
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CREATE TABLE t3 (a varchar(20),b char(1) NOT NULL default '0');
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INSERT INTO t3 VALUES ('W','a'),('A','c'),('J','b');
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CREATE TABLE t2 (a varchar(20),b int NOT NULL default '0');
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INSERT INTO t2 VALUES ('W','1'),('A','3'),('J','2');
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CREATE TABLE t1 (a varchar(20),b date NOT NULL default '0000-00-00');
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INSERT INTO t1 VALUES ('W','1732-02-22'),('A','1735-10-30'),('J','1743-04-13');
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SELECT * FROM t1 WHERE b = (SELECT MIN(b) FROM t1);
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a b
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W 1732-02-22
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SELECT * FROM t2 WHERE b = (SELECT MIN(b) FROM t2);
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a b
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W 1
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SELECT * FROM t3 WHERE b = (SELECT MIN(b) FROM t3);
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a b
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W a
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drop table if exists inscrit;
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CREATE TABLE `inscrit` (
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`pseudo` varchar(35) character set latin1 NOT NULL default '',
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`email` varchar(60) character set latin1 NOT NULL default '',
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PRIMARY KEY (`pseudo`),
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UNIQUE KEY `email` (`email`)
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) TYPE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;
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INSERT INTO inscrit (pseudo,email) VALUES ('joce','test');
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INSERT INTO inscrit (pseudo,email) VALUES ('joce1','test1');
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INSERT INTO inscrit (pseudo,email) VALUES ('2joce1','2test1');
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EXPLAIN SELECT pseudo,(SELECT email FROM inscrit WHERE pseudo=(SELECT pseudo FROM inscrit WHERE pseudo='joce')) FROM inscrit WHERE pseudo=(SELECT pseudo FROM inscrit WHERE pseudo='joce');
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY inscrit const PRIMARY PRIMARY 35 const 1
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4 SUBSELECT inscrit const PRIMARY PRIMARY 35 const 1
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2 SUBSELECT inscrit const PRIMARY PRIMARY 35 const 1
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3 SUBSELECT inscrit const PRIMARY PRIMARY 35 const 1
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SELECT pseudo FROM inscrit WHERE pseudo=(SELECT pseudo,email FROM
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inscrit WHERE pseudo='joce');
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Subselect returns more than 1 field
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SELECT pseudo FROM inscrit WHERE pseudo=(SELECT * FROM inscrit WHERE
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pseudo='joce');
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Subselect returns more than 1 field
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SELECT pseudo FROM inscrit WHERE pseudo=(SELECT pseudo FROM inscrit WHERE pseudo='joce');
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pseudo
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joce
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SELECT pseudo FROM inscrit WHERE pseudo=(SELECT pseudo FROM inscrit WHERE pseudo LIKE '%joce%');
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Subselect returns more than 1 record
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drop table if exists t1,t2,t3,t4,t5,attend,clinic,inscrit;
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drop table if exists searchconthardwarefr3;
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CREATE TABLE `searchconthardwarefr3` (
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`topic` mediumint(8) unsigned NOT NULL default '0',
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`date` date NOT NULL default '0000-00-00',
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`pseudo` varchar(35) character set latin1 NOT NULL default '',
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PRIMARY KEY (`pseudo`,`date`,`topic`),
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KEY `topic` (`topic`)
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) TYPE=MyISAM ROW_FORMAT=DYNAMIC;
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INSERT INTO searchconthardwarefr3 (topic,date,pseudo) VALUES
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('43506','2002-10-02','joce'),('40143','2002-08-03','joce');
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EXPLAIN SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE searchconthardwarefr3 index NULL PRIMARY 41 NULL 2 where used; Using index
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EXPLAIN SELECT (SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03');
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY No tables used
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2 SUBSELECT searchconthardwarefr3 index NULL PRIMARY 41 NULL 2 where used; Using index
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SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03';
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date
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2002-08-03
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SELECT (SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03');
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(SELECT DISTINCT date FROM searchconthardwarefr3 WHERE date='2002-08-03')
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2002-08-03
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SELECT 1 FROM searchconthardwarefr3 WHERE 1=(SELECT 1 UNION SELECT 1) UNION ALL SELECT 1;
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1
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1
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1
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1
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SELECT 1 FROM searchconthardwarefr3 WHERE 1=(SELECT 1 UNION ALL SELECT 1) UNION SELECT 1;
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Subselect returns more than 1 record
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EXPLAIN SELECT 1 FROM searchconthardwarefr3 WHERE 1=(SELECT 1 UNION SELECT 1);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY searchconthardwarefr3 index NULL topic 3 NULL 2 Using index
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2 SUBSELECT No tables used
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3 UNION No tables used
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drop table searchconthardwarefr3;
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drop table if exists forumconthardwarefr7, searchconthardwarefr7;
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CREATE TABLE `forumconthardwarefr7` (
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`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
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`maxnumrep` int(10) unsigned NOT NULL default '0',
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PRIMARY KEY (`numeropost`),
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UNIQUE KEY `maxnumrep` (`maxnumrep`)
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) TYPE=MyISAM ROW_FORMAT=FIXED;
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INSERT INTO forumconthardwarefr7 (numeropost,maxnumrep) VALUES (40143,1),(43506,2);
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CREATE TABLE `searchconthardwarefr7` (
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`mot` varchar(30) NOT NULL default '',
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`topic` mediumint(8) unsigned NOT NULL default '0',
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`date` date NOT NULL default '0000-00-00',
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`pseudo` varchar(35) NOT NULL default '',
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PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`)
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) TYPE=MyISAM ROW_FORMAT=DYNAMIC;
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INSERT INTO searchconthardwarefr7 (mot,topic,date,pseudo) VALUES ('joce','40143','2002-10-22','joce'), ('joce','43506','2002-10-22','joce');
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SELECT numeropost,maxnumrep FROM forumconthardwarefr7 WHERE exists (SELECT 1 FROM searchconthardwarefr7 WHERE (mot='joce') AND date >= '2002-10-21' AND forumconthardwarefr7.numeropost = searchconthardwarefr7.topic) ORDER BY maxnumrep DESC LIMIT 0, 20;
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numeropost maxnumrep
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43506 2
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40143 1
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SELECT (SELECT 1) as a FROM (SELECT 1 FROM forumconthardwarefr7 HAVING a=1);
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Unknown column 'a' in 'having clause'
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drop table forumconthardwarefr7, searchconthardwarefr7;
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