MySql逗号拼接字符串查询的两种方法

下面两个函数的使用和FIND_IN_SET一样,使用时只需要把FIND_IN_SET换成FIND_PART_IN_SET或FIND_ALL_PART_IN_SET

例如某字段里是为1,2,3,4,5

使用方法:

第一种,传入1,3,6 可以查出来

select * from XXX where FIND_PART_IN_SET('1,3,6','1,2,3,4,5')

select * from XXX where FIND_ALL_PART_IN_SET('1,3,6','1,2,3,4,5')

第一种:只要包含其中一个就可以被查出来

CREATE DEFINER = `root`@`%` FUNCTION `NewProc`(str1 text,str2 text) RETURNS textBEGIN #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;

CREATE DEFINER = `root`@`%` FUNCTION `NewProc`(str1 text,str2 text) RETURNS textBEGIN #传入两个逗号分割的字符串，判断第二个字符串是否全部包含第一个字符串split之后的单个DECLARE CURRENTINDEX INT;#当前下标DECLARE CURRENTSTR text;DECLARE RESULT int;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; #只传一个 和 最后无逗号的情况 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;

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