call procedure_split('分享,代码,片段',',');
select * from splittable;
drop procedure if exists procedure_split;
create procedure `procedure_split`(
    inputstring varchar(1000),
    delim char(1)
)
begin
    declare strlen int default length(inputstring);
    declare last_index int default 0;
    declare cur_index int default 1;
    declare cur_char varchar(200);
    declare len int;
    drop temporary table if exists splittable;
    create temporary table splittable(
        value varchar(20)
    ) ;
    while(cur_index    begin
        if substring(inputstring from cur_index for 1)=delim or cur_index=strlen then
            set len=cur_index-last_index-1;
            if cur_index=strlen then
               set len=len+1;
            end if;
            insert into splittable(`value`)values(substring(inputstring from (last_index+1) for len));
            set last_index=cur_index;
        end if;
        set cur_index=cur_index+1;
    end;
    end while;
end ;