MySQL中实现分割字符串的方法

比如现在有一字符串：1,2,44,5,666,29232
要把它按照逗号分割成：
1
2
44
5
666
29232
而且还要求它的总数。这个我以前写过。不过今天规范一下。
1、具体函数

SQL code


    DELIMITER $$

    CREATE DEFINER=`root`@`%` FUNCTION `func_get_split_string_total`( f_string varchar(1000),f_delimiter varchar(5) ) RETURNS int(11) BEGIN -- Get the total number of given string. return 1+(length(f_string) - length(replace(f_string,f_delimiter,'')));
    END$$

    DELIMITER ;




SQL code


    DELIMITER $$


    CREATE DEFINER=`root`@`%` FUNCTION `func_get_split_string`( f_string varchar(1000),f_delimiter varchar(5),f_order int) RETURNS varchar(255) CHARSET utf8 BEGIN -- Get the separated number of given string. declare result varchar(255) default '';
      set result = reverse(substring_index(reverse(substring_index(f_string,f_delimiter,f_order)),f_delimiter,1));
      return result;
    END$$

    DELIMITER ;

测试的存储过程：
    DELIMITER $$

    CREATE PROCEDURE `sp_print_result`( IN f_string varchar(1000),IN f_delimiter varchar(5) ) BEGIN -- Get the separated string. declare cnt int default 0;
      declare i int default 0;
      set cnt = func_get_split_string_total(f_string,f_delimiter);
      drop table if exists tmp_print;
      create temporary table tmp_print (num int not null);
      while i < cnt
      do
        set i = i + 1;
        insert into tmp_print(num) values (func_get_split_string(f_string,f_delimiter,i));
      end while;
      select * from tmp_print;

    END$$

    DELIMITER ; 

2、来做一下测试

mysql> call sp_print_result('1,2,44,5,666,29232',','); +-------+
| num | +-------+
|     1 |
|     2 |
|    44 |
|     5 |
|   666 |
| 29232 | +-------+
6 rows in set (0.01 sec)

Query OK, 0 rows affected (0.01 sec)

From：http://blog.chinaunix.net/u/29134/showart_1002486.html