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			67 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			67 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| # Initialize
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| --disable_warnings
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| drop table if exists t1,t2,t3;
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| --enable_warnings
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| 
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| select * from (select 2 from DUAL) b;
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| -- error 1054
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| SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
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| -- error 1054
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| SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
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| CREATE TABLE t1 (a int not null, b char (10) not null);
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| insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
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| CREATE TABLE t2 (a int not null, b char (10) not null);
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| insert into t2 values (3,'c'),(4,'d'),(5,'f'),(6,'e');
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| select t1.a,t3.y from t1,(select a as y from t2  where b='c') as t3  where t1.a = t3.y;
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| select t1.a,t3.a from t1,(select * from t2  where b='c') as t3  where t1.a = t3.a;
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| CREATE TABLE t3 (a int not null, b char (10) not null);
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| insert into t3 values (3,'f'),(4,'y'),(5,'z'),(6,'c');
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| select t1.a,t4.y from t1,(select t2.a as y from t2,(select t3.b from t3 where t3.a>3) as t5  where t2.b=t5.b) as t4  where t1.a = t4.y;
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| --error 1054
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| SELECT a FROM (SELECT 1 FROM (SELECT 1) a HAVING a=1) b;
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| --error 1052
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| SELECT a,b as a FROM (SELECT '1' as a,'2' as b) b  HAVING a=1;
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| SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=2;
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| SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=1;
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| --error 1054
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| SELECT 1 FROM (SELECT 1) a WHERE a=2;
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| --error 1054
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| SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1  HAVING a=1) as a;
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| select * from t1 as x1, (select * from t1) as x2;
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| explain select * from t1 as x1, (select * from t1) as x2;
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| drop table if exists  t2,t3;
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| select * from (select 1) as a;
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| select a from (select 1 as a) as b;
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| select 1 from (select 1) as a;
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| select * from (select * from t1 union select * from t1) a;
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| select * from (select * from t1 union all select * from t1) a;
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| explain select * from (select * from t1 union select * from t1) a;
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| explain select * from (select * from t1 union all select * from t1) a;
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| CREATE TABLE t2 (a int not null);
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| insert into t2 values(1);
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| select * from (select * from t1 where t1.a=(select a from t2 where t2.a=t1.a)) a;
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| select * from (select * from t1 where t1.a=(select t2.a from t2 where t2.a=t1.a) union select t1.a, t1.b from t1) a;
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| drop table t1, t2;
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| create table t1(a int not null, t char(8), index(a));
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| disable_query_log;
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| let $1 = 10000;
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| while ($1)
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|  {
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|   eval insert into t1 values ($1,'$1'); 
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|   dec $1;
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|  }
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| enable_query_log;
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| SELECT * FROM (SELECT * FROM t1) as b ORDER BY a  ASC LIMIT 0,20;
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| explain select count(*) from t1 as tt1, (select * from t1) as tt2;
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| drop table t1;
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| SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b;
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| select * from (select 1 as a) b  left join (select 2 as a) c using(a);
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| --error 1054
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| SELECT * FROM (SELECT 1 UNION SELECT a) b;
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| --error 1054
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| SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
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| --error 1054
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| SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
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| --error 1054
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| select 1 from  (select 2) a order by 0;
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