MySql Split函数

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CREATE  FUNCTION `fun_split_total`(str varchar(200),delimiter varchar(4)) RETURNS int(11)
begin
return 1+(length(str) - length(replace(str,delimiter,"")));
end;

 

/*str_index=fun_split_total("1,2,3",",");*/

CREATE  FUNCTION `fun_split_string`( str varchar(200),delimiter varchar(4),str_index int) RETURNS varchar(255) CHARSET utf8
BEGIN 
 declare result varchar(255) default "";  
 set result = reverse(substring_index(reverse(substring_index(str,delimiter,str_index)),delimiter,1)); 
 return result;
 END;