CREATE DEFINER=`roots`@`%` FUNCTION `NewProc`(str1 text,str2 text) RETURNS text CHARSET utf8mb4
BEGIN
#传入两个逗号分割的字符串，判断第二个字符串是否包含第一个字符串split之后的单个
DECLARE CURRENTINDEX INT;#当前下标
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;
#只传一个 和 最后无逗号的情况
IF LENGTH(str1) > 0 THEN
if FIND_IN_SET(str1,str2) THEN
set result = 1;
end if;
END IF;
END IF;
RETURN result;
END