null.result
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:1k
- NULL NULL isnull(null) isnull(1/0) isnull(1/0 = null) ifnull(null,1) ifnull(null,"TRUE") ifnull("TRUE","ERROR") 1/0 is null 1 is not null
- NULL NULL 1 1 1 1 TRUE TRUE 1 1
- 1 | NULL 1 & NULL 1+NULL 1-NULL
- NULL NULL NULL NULL
- NULL=NULL NULL<>NULL IFNULL(NULL,1.1)+0 IFNULL(NULL,1) | 0
- NULL NULL 1.1 1
- strcmp("a",NULL) (1<NULL)+0.0 NULL regexp "a" null like "a%" "a%" like null
- NULL NULL NULL NULL NULL
- concat("a",NULL) replace(NULL,"a","b") replace("string","i",NULL) replace("string",NULL,"i") insert("abc",1,1,NULL) left(NULL,1)
- NULL NULL NULL NULL NULL NULL
- repeat("a",0) repeat("ab",5+5) repeat("ab",-1) reverse(NULL)
- abababababababababab NULL
- field(NULL,"a","b","c")
- 0
- 2 between null and 1 2 between 3 AND NULL NULL between 1 and 2 2 between NULL and 3 2 between 1 AND null
- 0 0 NULL NULL NULL
- NULL AND NULL 1 AND NULL NULL AND 1 NULL OR NULL 0 OR NULL NULL OR 0
- NULL NULL NULL NULL NULL NULL
- (NULL OR NULL) IS NULL
- 1
- NULL AND 0 0 and NULL
- NULL 0
- inet_ntoa(null) inet_aton(null) inet_aton("122.256") inet_aton("122.226.") inet_aton("")
- NULL NULL NULL NULL NULL
- x