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			125 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			125 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| # test of problems with having (Reported by Mark Rogers)
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| #
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| 
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| --disable_warnings
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| drop table if exists t1,t2;
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| --enable_warnings
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| 
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| create table t1 (a int);
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| select count(a) as b from t1 where a=0 having b > 0;
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| insert into t1 values (null);
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| select count(a) as b from t1 where a=0 having b > 0;
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| select count(a) as b from t1 where a=0 having b >=0;
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| explain extended select count(a) as b from t1 where a=0 having b >=0;
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| drop table t1; 
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| 
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| #
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| # Test of problem with HAVING and AVG()
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| #
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| 
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| CREATE TABLE t1 (
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|   raw_id int(10) NOT NULL default '0',
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|   chr_start int(10) NOT NULL default '0',
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|   chr_end int(10) NOT NULL default '0',
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|   raw_start int(10) NOT NULL default '0',
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|   raw_end int(10) NOT NULL default '0',
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|   raw_ori int(2) NOT NULL default '0'
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| );
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| 
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| INSERT INTO t1 VALUES (469713,1,164123,1,164123,1),(317330,164124,317193,101,153170,1),(469434,317194,375620,101,58527,1),(591816,375621,484273,1,108653,1),(591807,484274,534671,91,50488,1),(318885,534672,649362,101,114791,1),(318728,649363,775520,102,126259,1),(336829,775521,813997,101,38577,1),(317740,813998,953227,101,139330,1),(1,813998,953227,101,139330,1);
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| 
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| CREATE TABLE t2 (
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|   id int(10) unsigned NOT NULL default '0',
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|   contig_id int(10) unsigned NOT NULL default '0',
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|   seq_start int(10) NOT NULL default '0',
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|   seq_end int(10) NOT NULL default '0',
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|   strand tinyint(2) NOT NULL default '0',
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|   KEY id (id)
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| );
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| INSERT INTO t2 VALUES (133195,469713,61327,61384,1),(133196,469713,64113,64387,1),(133197,1,1,1,0),(133197,1,1,1,-2);
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| SELECT e.id,
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|    MIN( IF(sgp.raw_ori=1,
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|           (e.seq_start+sgp.chr_start-sgp.raw_start),  
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|           (sgp.chr_start+sgp.raw_end-e.seq_end))) as start, 
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|    MAX( IF(sgp.raw_ori=1,
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|            (e.seq_end+sgp.chr_start-sgp.raw_start),  
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|            (sgp.chr_start+sgp.raw_end-e.seq_start))) as end, 
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|    AVG(IF (sgp.raw_ori=1,e.strand,(-e.strand))) as chr_strand 
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| FROM  t1 sgp,
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|       t2 e  
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| WHERE sgp.raw_id=e.contig_id 
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| GROUP BY e.id 
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| HAVING chr_strand= -1 and end >= 0 
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|   AND start <= 999660;
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| drop table t1,t2;
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| 
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| #
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| # Test problem with having and MAX() IS NOT NULL
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| #
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| 
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| CREATE TABLE t1 (Fld1 int(11) default NULL,Fld2 int(11) default NULL);
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| INSERT INTO t1 VALUES (1,10),(1,20),(2,NULL),(2,NULL),(3,50);
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| select Fld1, max(Fld2) as q from t1 group by Fld1 having q is not null;
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| select Fld1, max(Fld2) from t1 group by Fld1 having max(Fld2) is not null;
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| select Fld1, max(Fld2) from t1 group by Fld1 having avg(Fld2) is not null;
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| select Fld1, max(Fld2) from t1 group by Fld1 having std(Fld2) is not null;
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| select Fld1, max(Fld2) from t1 group by Fld1 having variance(Fld2) is not null;
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| drop table t1;
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| 
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| #
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| # Test problem with count(distinct) in having
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| #
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| create table t1 (id int not null, qty int not null);
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| insert into t1 values (1,2),(1,3),(2,4),(2,5);
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| select id, sum(qty) as sqty from t1 group by id having sqty>2;
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| select sum(qty) as sqty from t1 group by id having count(id) > 0;
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| select sum(qty) as sqty from t1 group by id having count(distinct id) > 0;
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| drop table t1;
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| 
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| #
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| # Test case for Bug #4358 Problem with HAVING clause that uses alias from the
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| #              select list and TEXT field 
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| #
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| 
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| CREATE TABLE t1 (
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|   `id` bigint(20) NOT NULL default '0',
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|   `description` text
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| ) ENGINE=MyISAM;
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| 
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| CREATE TABLE t2 (
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|   `id` bigint(20) NOT NULL default '0',
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|   `description` varchar(20)
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| ) ENGINE=MyISAM;
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| 
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| INSERT INTO t1  VALUES (1, 'test');
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| INSERT INTO t2 VALUES (1, 'test');
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| 
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| CREATE TABLE t3 (
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|   `id`       bigint(20) NOT NULL default '0',
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|   `order_id` bigint(20) NOT NULL default '0'
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| ) ENGINE=MyISAM;
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| 
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| select
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| 	a.id, a.description,
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| 	count(b.id) as c 
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| from t1 a left join t3 b on a.id=b.order_id 
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| group by a.id, a.description 
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| having (a.description is not null) and (c=0);
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| 
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| select
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| 	a.*, 
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| 	count(b.id) as c 
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| from t2 a left join t3 b on a.id=b.order_id 
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| group by a.id, a.description
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| having (a.description is not null) and (c=0);
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| 
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| INSERT INTO t1  VALUES (2, 'test2');
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| 
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| select
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| 	a.id, a.description,
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| 	count(b.id) as c 
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| from t1 a left join t3 b on a.id=b.order_id 
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| group by a.id, a.description 
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| having (a.description is not null) and (c=0);
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| drop table t1,t2,t3;
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