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  • Mysql储存过程8:repeat循环

    语法:

    repeat
    SQL
    until 条件 end repeat;

    就是相当于其他语言中的:

    do{
    # 
       
    }while();
    mysql> create procedure p1p()
        ->   begin
        ->     declare count int default 0;
        ->     repeat
        ->       select user();
        ->       set count = count + 1;
        ->     until count>3 end repeat;
        ->   end$
    Query OK, 0 rows affected (0.00 sec)
    
    mysql> call p1p()$
    +----------------+
    | user()         |
    +----------------+
    | root@localhost |
    +----------------+
    1 row in set (0.00 sec)
    
    +----------------+
    | user()         |
    +----------------+
    | root@localhost |
    +----------------+
    1 row in set (0.01 sec)
    
    +----------------+
    | user()         |
    +----------------+
    | root@localhost |
    +----------------+
    1 row in set (0.01 sec)
    
    +----------------+
    | user()         |
    +----------------+
    | root@localhost |
    +----------------+
    1 row in set (0.02 sec)
    
    Query OK, 0 rows affected (0.02 sec)
    
    mysql>
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  • 原文地址:https://www.cnblogs.com/perl6/p/7114773.html
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