mirror of
				https://github.com/MariaDB/server.git
				synced 2025-11-03 14:33:32 +03:00 
			
		
		
		
	
		
			
				
	
	
		
			125 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			125 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
# test of problems with having (Reported by Mark Rogers)
 | 
						|
#
 | 
						|
 | 
						|
--disable_warnings
 | 
						|
drop table if exists t1,t2;
 | 
						|
--enable_warnings
 | 
						|
 | 
						|
create table t1 (a int);
 | 
						|
select count(a) as b from t1 where a=0 having b > 0;
 | 
						|
insert into t1 values (null);
 | 
						|
select count(a) as b from t1 where a=0 having b > 0;
 | 
						|
select count(a) as b from t1 where a=0 having b >=0;
 | 
						|
explain extended select count(a) as b from t1 where a=0 having b >=0;
 | 
						|
drop table t1; 
 | 
						|
 | 
						|
#
 | 
						|
# Test of problem with HAVING and AVG()
 | 
						|
#
 | 
						|
 | 
						|
CREATE TABLE t1 (
 | 
						|
  raw_id int(10) NOT NULL default '0',
 | 
						|
  chr_start int(10) NOT NULL default '0',
 | 
						|
  chr_end int(10) NOT NULL default '0',
 | 
						|
  raw_start int(10) NOT NULL default '0',
 | 
						|
  raw_end int(10) NOT NULL default '0',
 | 
						|
  raw_ori int(2) NOT NULL default '0'
 | 
						|
);
 | 
						|
 | 
						|
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);
 | 
						|
 | 
						|
CREATE TABLE t2 (
 | 
						|
  id int(10) unsigned NOT NULL default '0',
 | 
						|
  contig_id int(10) unsigned NOT NULL default '0',
 | 
						|
  seq_start int(10) NOT NULL default '0',
 | 
						|
  seq_end int(10) NOT NULL default '0',
 | 
						|
  strand tinyint(2) NOT NULL default '0',
 | 
						|
  KEY id (id)
 | 
						|
);
 | 
						|
INSERT INTO t2 VALUES (133195,469713,61327,61384,1),(133196,469713,64113,64387,1),(133197,1,1,1,0),(133197,1,1,1,-2);
 | 
						|
SELECT e.id,
 | 
						|
   MIN( IF(sgp.raw_ori=1,
 | 
						|
          (e.seq_start+sgp.chr_start-sgp.raw_start),  
 | 
						|
          (sgp.chr_start+sgp.raw_end-e.seq_end))) as start, 
 | 
						|
   MAX( IF(sgp.raw_ori=1,
 | 
						|
           (e.seq_end+sgp.chr_start-sgp.raw_start),  
 | 
						|
           (sgp.chr_start+sgp.raw_end-e.seq_start))) as end, 
 | 
						|
   AVG(IF (sgp.raw_ori=1,e.strand,(-e.strand))) as chr_strand 
 | 
						|
FROM  t1 sgp,
 | 
						|
      t2 e  
 | 
						|
WHERE sgp.raw_id=e.contig_id 
 | 
						|
GROUP BY e.id 
 | 
						|
HAVING chr_strand= -1 and end >= 0 
 | 
						|
  AND start <= 999660;
 | 
						|
drop table t1,t2;
 | 
						|
 | 
						|
#
 | 
						|
# Test problem with having and MAX() IS NOT NULL
 | 
						|
#
 | 
						|
 | 
						|
CREATE TABLE t1 (Fld1 int(11) default NULL,Fld2 int(11) default NULL);
 | 
						|
INSERT INTO t1 VALUES (1,10),(1,20),(2,NULL),(2,NULL),(3,50);
 | 
						|
select Fld1, max(Fld2) as q from t1 group by Fld1 having q is not null;
 | 
						|
select Fld1, max(Fld2) from t1 group by Fld1 having max(Fld2) is not null;
 | 
						|
select Fld1, max(Fld2) from t1 group by Fld1 having avg(Fld2) is not null;
 | 
						|
select Fld1, max(Fld2) from t1 group by Fld1 having std(Fld2) is not null;
 | 
						|
select Fld1, max(Fld2) from t1 group by Fld1 having variance(Fld2) is not null;
 | 
						|
drop table t1;
 | 
						|
 | 
						|
#
 | 
						|
# Test problem with count(distinct) in having
 | 
						|
#
 | 
						|
create table t1 (id int not null, qty int not null);
 | 
						|
insert into t1 values (1,2),(1,3),(2,4),(2,5);
 | 
						|
select id, sum(qty) as sqty from t1 group by id having sqty>2;
 | 
						|
select sum(qty) as sqty from t1 group by id having count(id) > 0;
 | 
						|
select sum(qty) as sqty from t1 group by id having count(distinct id) > 0;
 | 
						|
drop table t1;
 | 
						|
 | 
						|
#
 | 
						|
# Test case for Bug #4358 Problem with HAVING clause that uses alias from the
 | 
						|
#              select list and TEXT field 
 | 
						|
#
 | 
						|
 | 
						|
CREATE TABLE t1 (
 | 
						|
  `id` bigint(20) NOT NULL default '0',
 | 
						|
  `description` text
 | 
						|
) ENGINE=MyISAM;
 | 
						|
 | 
						|
CREATE TABLE t2 (
 | 
						|
  `id` bigint(20) NOT NULL default '0',
 | 
						|
  `description` varchar(20)
 | 
						|
) ENGINE=MyISAM;
 | 
						|
 | 
						|
INSERT INTO t1  VALUES (1, 'test');
 | 
						|
INSERT INTO t2 VALUES (1, 'test');
 | 
						|
 | 
						|
CREATE TABLE t3 (
 | 
						|
  `id`       bigint(20) NOT NULL default '0',
 | 
						|
  `order_id` bigint(20) NOT NULL default '0'
 | 
						|
) ENGINE=MyISAM;
 | 
						|
 | 
						|
select
 | 
						|
	a.id, a.description,
 | 
						|
	count(b.id) as c 
 | 
						|
from t1 a left join t3 b on a.id=b.order_id 
 | 
						|
group by a.id, a.description 
 | 
						|
having (a.description is not null) and (c=0);
 | 
						|
 | 
						|
select
 | 
						|
	a.*, 
 | 
						|
	count(b.id) as c 
 | 
						|
from t2 a left join t3 b on a.id=b.order_id 
 | 
						|
group by a.id, a.description
 | 
						|
having (a.description is not null) and (c=0);
 | 
						|
 | 
						|
INSERT INTO t1  VALUES (2, 'test2');
 | 
						|
 | 
						|
select
 | 
						|
	a.id, a.description,
 | 
						|
	count(b.id) as c 
 | 
						|
from t1 a left join t3 b on a.id=b.order_id 
 | 
						|
group by a.id, a.description 
 | 
						|
having (a.description is not null) and (c=0);
 | 
						|
drop table t1,t2,t3;
 |