下面兩個函數的使用和FIND_IN_SET一樣,使用時只需要把FIND_IN_SET換成FIND_PART_IN_SET或FIND_ALL_PART_IN_SET
例如某字段裏是爲1,2,3,4,5
使用方法:
第一種,傳入1,3,6 可以查出來
select * from XXX where FIND_PART_IN_SET('1,3,6','1,2,3,4,5')
第二種,傳入1,3,6 查不出來
select * from XXX where FIND_ALL_PART_IN_SET('1,3,6','1,2,3,4,5')
函數:
第一種:只要包含其中一個就可以被查出來
CREATE DEFINER = root@% FUNCTION NewProc(str1 text,str2 text)
RETURNS text
BEGIN
#傳入兩個逗號分割的字符串，判斷第二個字符串是否包含第一個字符串split之後的單個DECLARE CURRENTINDEX INT;#當前下標
DECLARE CURRENTSTR text;
DECLARE result int;
set result = 0;
set CURRENTINDEX = 0;
set CURRENTSTR = '';
IF str1 IS NOT NULL AND str1 != '' THEN
SET CURRENTINDEX = LOCATE(',',str1);
WHILE CURRENTINDEX > 0 DO
SET CURRENTSTR = substring(str1,1,CURRENTINDEX-1);
if FIND_IN_SET(CURRENTSTR,str2) THEN
set result = 1;
end if;
SET str1 = substring(str1,CURRENTINDEX+1);
SET CURRENTINDEX = LOCATE(',',str1);
END WHILE;
#只傳一個 和 最後無逗號的情況
IF LENGTH(str1) > 0 THEN
if FIND_IN_SET(str1,str2) THEN
set result = 1;
end if;
END IF;
END IF;
RETURN result;
END;
第二種:必須全部包含纔可以被查出來
CREATE DEFINER = root@% FUNCTION NewProc(str1 text,str2 text)
RETURNS text
BEGIN
#傳入兩個逗號分割的字符串，判斷第二個字符串是否全部包含第一個字符串split之後的單個DECLARE CURRENTINDEX INT;#當前下標
DECLARE CURRENTSTR text;
DECLARE RESULT int;
DECLARE TOTALCOUNT int;
DECLARE TRUECOUNT int;
set RESULT = 0;
set CURRENTINDEX = 0;
set CURRENTSTR = '';
set TOTALCOUNT = 0;
set TRUECOUNT = 0;
IF str1 IS NOT NULL AND str1 != '' THEN
SET CURRENTINDEX = LOCATE(',',str1);
WHILE CURRENTINDEX > 0 DO
SET TOTALCOUNT = TOTALCOUNT + 1;
SET CURRENTSTR = substring(str1,1,CURRENTINDEX-1);
if FIND_IN_SET(CURRENTSTR,str2) THEN
SET TRUECOUNT = TRUECOUNT + 1;
end if;
SET str1 = substring(str1,CURRENTINDEX+1);
SET CURRENTINDEX = LOCATE(',',str1);
END WHILE;
#只傳一個 和 最後無逗號的情況
IF LENGTH(str1) > 0 THEN
SET TOTALCOUNT = TOTALCOUNT + 1;
if FIND_IN_SET(str1,str2) THEN
SET TRUECOUNT = TRUECOUNT + 1;
end if;
END IF;
END IF;
IF TOTALCOUNT > 0 AND TRUECOUNT = TOTALCOUNT THEN
SET RESULT = 1;
END IF;
RETURN result;
END;