mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 21:42:35 +01:00
33346e26af
added string length for more speed made code covarage for print() method of Item fixed printability of some items (SCRUM) (WL#1274)
73 lines
1.9 KiB
Text
73 lines
1.9 KiB
Text
drop table if exists t1;
|
|
select IF(0,"ERROR","this"),IF(1,"is","ERROR"),IF(NULL,"ERROR","a"),IF(1,2,3)|0,IF(1,2.0,3.0)+0 ;
|
|
IF(0,"ERROR","this") IF(1,"is","ERROR") IF(NULL,"ERROR","a") IF(1,2,3)|0 IF(1,2.0,3.0)+0
|
|
this is a 2 2.0
|
|
CREATE TABLE t1 (st varchar(255) NOT NULL, u int(11) NOT NULL) TYPE=MyISAM;
|
|
INSERT INTO t1 VALUES ('a',1),('A',1),('aa',1),('AA',1),('a',1),('aaa',0),('BBB',0);
|
|
select if(1,st,st) s from t1 order by s;
|
|
s
|
|
a
|
|
A
|
|
a
|
|
aa
|
|
AA
|
|
aaa
|
|
BBB
|
|
select if(u=1,st,st) s from t1 order by s;
|
|
s
|
|
a
|
|
A
|
|
a
|
|
aa
|
|
AA
|
|
aaa
|
|
BBB
|
|
select if(u=1,binary st,st) s from t1 order by s;
|
|
s
|
|
A
|
|
AA
|
|
BBB
|
|
a
|
|
a
|
|
aa
|
|
aaa
|
|
select if(u=1,st,binary st) s from t1 where st like "%a%" order by s;
|
|
s
|
|
A
|
|
AA
|
|
a
|
|
a
|
|
aa
|
|
aaa
|
|
explain extended select if(u=1,st,binary st) s from t1 where st like "%a%" order by s;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where; Using filesort
|
|
Warnings:
|
|
Note 1003 select high_priority if((test.t1.u = 1),test.t1.st,(test.t1.st collate _latin1'BINARY')) AS `s` from test.t1 where (test.t1.st like _latin1'%a%') order by if((test.t1.u = 1),test.t1.st,(test.t1.st collate _latin1'BINARY'))
|
|
select nullif(u=0, 'test') from t1;
|
|
nullif(u=0, 'test')
|
|
NULL
|
|
NULL
|
|
NULL
|
|
NULL
|
|
NULL
|
|
1
|
|
1
|
|
explain extended select nullif(u=0, 'test') from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 7
|
|
Warnings:
|
|
Note 1003 select high_priority nullif((test.t1.u = 0),_latin1'test') AS `nullif(u=0, 'test')` from test.t1
|
|
drop table t1;
|
|
create table t1 (num double(12,2));
|
|
insert into t1 values (144.54);
|
|
select sum(if(num is null,0.00,num)) from t1;
|
|
sum(if(num is null,0.00,num))
|
|
144.54
|
|
drop table t1;
|
|
create table t1 (x int, y int);
|
|
insert into t1 values (0,6),(10,16),(20,26),(30,10),(40,46),(50,56);
|
|
select min(if(y -x > 5,y,NULL)), max(if(y - x > 5,y,NULL)) from t1;
|
|
min(if(y -x > 5,y,NULL)) max(if(y - x > 5,y,NULL))
|
|
6 56
|
|
drop table t1;
|