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Fix for bug #2629 NULLIF() doesn't behave as described in manual

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unknown 2004-03-16 11:33:03 +04:00
commit 5adbc611dd
3 changed files with 15 additions and 3 deletions
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6
mysql-test/r/func_if.result
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@ -40,6 +40,12 @@ a
aa
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drop table t1;
select NULLIF(NULL,NULL), NULLIF(NULL,1), NULLIF(NULL,1.0), NULLIF(NULL,"test");
NULLIF(NULL,NULL) NULLIF(NULL,1) NULLIF(NULL,1.0) NULLIF(NULL,"test")
NULL NULL NULL NULL
select NULLIF(1,NULL), NULLIF(1.0, NULL), NULLIF("test", NULL);
NULLIF(1,NULL) NULLIF(1.0, NULL) NULLIF("test", NULL)
1 1.0 test
create table t1 (num double(12,2));
insert into t1 values (144.54);
select sum(if(num is null,0.00,num)) from t1;