调用存储过程不起作用

我有一个数据表rel_user_article调用存储过程不起作用

+---------+------------+ 
| user_id | article_id | 
+---------+------------+ 
|  1 |   -1 | 
|  97 |  153 | 
+---------+------------+

此表意味着接下来的逻辑设置：每个作者必须至少有1条和每篇文章必须至少有1个作者。当作者没有文章时，比表必须有假关系：（uid，-1）

当作者添加他的第一篇文章比这个假关系必须被删除。

我已经存储了创建新关系和删除假关系的过程。删除假的关系是这样的：

CREATE PROCEDURE `rel_delete_fake`(IN `ids` TEXT, IN `tbl` VARCHAR(255), 
IN `fake_f` VARCHAR(255), IN `real_f` VARCHAR(255)) 
     MODIFIES SQL DATA 
    proc: begin 
     if (`ids` = '') then 
      leave proc; 
     end if; 

     set @s = concat('DELETE FROM ', `tbl`, ' WHERE (', `fake_f`, 
         ' = "-1" AND ', `real_f`, ' IN (', `ids`, '))'); 

     prepare qr from @s; 
     execute qr; 
     deallocate prepare qr; 
    end proc

创建“真实”的关系是这样的：

CREATE DEFINER=`root`@`localhost` PROCEDURE `rel_create`(IN `ids1` TEXT, 
IN `ids2` TEXT, IN `tbl` VARCHAR(255), IN `field1` VARCHAR(255), 
IN `field2` VARCHAR(255)) 
    MODIFIES SQL DATA 
proc: begin 
    set @cur = 0; 
    set @id1_cur = 0; 
    set @id2_cur = 0; 

    set @id1_cur_old = NULL;  
    set @id2_cur_old = NULL; 

    if (`ids1` = '' or `ids2` = '') then 
     leave proc; 
    end if; 

    set @sql_str = concat('insert into ', `tbl`, ' (', `field1`, ', ', `field2`, ") values (?, ?)"); 
    prepare qr from @sql_str; 
    loop1: loop 
     set @cur = @cur + 1; 
     set @id1_cur = substring_index(substring_index(`ids1`, ',', @cur), ',', -1); 
     set @id2_cur = substring_index(substring_index(`ids2`, ',', @cur), ',', -1); 

     if (@id1_cur = @id1_cur_old and @id2_cur = @id2_cur_old) then 
      leave proc; 
     end if; 

     execute qr using @id1_cur, @id2_cur; 

     set @id1_cur_old = @id1_cur; 
     set @id2_cur_old = @id2_cur; 
    end loop loop1; 
    deallocate prepare qr; 

     -- deleting fake records that became needless 
     -- even this doesn't work 
    call `rel_delete_fake`('1','rel_user_article','article_id','user_id'); 
    leave proc; 

    -- deleting fake records that became needless 
    call `rel_delete_fake`(`ids1`, `tbl`, `field2`, `field1`); 
    call `rel_delete_fake`(`ids2`, `tbl`, `field1`, `field2`); 
end proc

程序删除假关系的作品。创建关系的过程只会创建新记录，但不会调用rel_delete_fake过程。

为了测试我发出下一个电话：

call `rel_create`('1','153','rel_user_article','user_id','article_id');

，并在结果：

+---------+------------+ 
| user_id | article_id | 
+---------+------------+ 
|  1 |   -1 | 
|  1 |  153 | 
|  97 |  153 | 
+---------+------------+

为什么这样（1，-1）不会被删除？

来源

2015-02-08 Nikita

我发现了错误。必须有“离开循环1”。代替“离开proc”;循环中。

来源

2015-02-09 06:32:27 Nikita

调用存储过程不起作用

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