mysql把字符串变成数组的示例：
drop table if exists list;create temporary table list(id INT not null);
drop PROCEDURE if exists strings_to_array;
create PROCEDURE strings_to_array(s_str varchar(128), s_split varchar(3))
begin
set @i = length(s_str) - length(replace(s_str,s_split,'')); -- 算出分隔符的总数
set @left_str = s_str;
while @i>0 -- 有多少个分隔符就循环多少遍
do
set @sub_str = substr(@left_str,1,instr(@left_str,s_split)-1); -- 得到分隔符前面的字符串
set @left_str = substr(@left_str,length(@sub_str)+length(s_split)+1); -- 得到分隔符后面的字符串
set @n = trim(@sub_str);
insert into list(id) values(@n);
set @i = @i - 1;
end while;
set @n = trim(@left_str);
insert into list(id) values(@n);
end;
CALL strings_to_array('0,1,2,29,7,9,14',',');
select * from list;
DROP TEMPORARY TABLE IF EXISTS list;
