mysql 如何根据查询出来的结果去循环

[panrengui]

我有一张表查出一列数据，现在要根据这列数据的每一行做不同的操作。mysql怎么实现。
如：select names from city
结果集为：‘张三’
‘李四’
‘王五’...

再利用结果作为参数传进另个函数（存储过程）执行。如何把这些结果集像利用数组一样利用
类似c# foreach(string name in names)
{
pro(name);//调用另一个函数
}

的效果。

[rucypli]

结果集读到程序中 在程序中循环

[wwwwb]

将结果存入，在SP中调用
OR
打开游标->循环操作

[panrengui]

不是很明白，麻烦楼上能详细点说下和给点示例代码吗？谢谢！

[ACMAIN_CHM]

MYSQL中无法传结果集，只能通过临时表，或者你直接在存储过程中进行处理。

[ACMAIN_CHM]

[Quote]Example:

CREATE PROCEDURE curdemo()
BEGIN
DECLARE done INT DEFAULT 0;
DECLARE a CHAR(16);
DECLARE b,c INT;
DECLARE cur1 CURSOR FOR SELECT id,data FROM test.t1;
DECLARE cur2 CURSOR FOR SELECT i FROM test.t2;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;

OPEN cur1;
OPEN cur2;

REPEAT
FETCH cur1 INTO a, b;
FETCH cur2 INTO c;
IF NOT done THEN
IF b < c THEN
INSERT INTO test.t3 VALUES (a,b);
ELSE
INSERT INTO test.t3 VALUES (a,c);
END IF;
END IF;
UNTIL done END REPEAT;

CLOSE cur1;
CLOSE cur2;
END

[Quote][/Quote]Example:

CREATE PROCEDURE curdemo()
BEGIN
DECLARE done INT DEFAULT 0;
DECLARE a CHAR(16);
DECLARE b,c INT;
DECLARE cur1 CURSOR FOR SELECT id,data FROM test.t1;
DECLARE cur2 CURSOR FOR SELECT i FROM test.t2;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;

OPEN cur1;
OPEN cur2;

REPEAT
FETCH cur1 INTO a, b;
FETCH cur2 INTO c;
IF NOT done THEN
IF b < c THEN
INSERT INTO test.t3 VALUES (a,b);
ELSE
INSERT INTO test.t3 VALUES (a,c);
END IF;
END IF;
UNTIL done END REPEAT;

CLOSE cur1;
CLOSE cur2;
END

[/Quote]