Stored procedures 如何在返回值为字符串的for循环中获取DB29.7游标值

我有一个环

DECLARE SQL VARCHAR(1024);

FOR V AS CUR1 CURSOR FOR (SELECT 'Select * from My_Table' from ... )
DO
    SET SQL = CUR1;
    PREPARE S1 FROM SQL;
    EXECUTE S1;
END FOR;

这似乎不起作用。当for循环中的光标指向返回的某一行时，我成功地完成了类似的操作，我可以访问该值，例如：

SET SQL = CUR1.TABNAME

---

但是现在返回的值是一个字符串，我不知道如何从游标获取它。有什么想法吗

您只需在查询中指定列名：

DECLARE SQL VARCHAR(1024);

FOR V AS CUR1 CURSOR FOR (SELECT 'drop table My_Table' as malicious_code from...)
DO
    SET SQL = CUR1.malicious_code;
    PREPARE S1 FROM SQL;
    EXECUTE S1;
END FOR;

---

您只需在查询中指定列名：

DECLARE SQL VARCHAR(1024);

FOR V AS CUR1 CURSOR FOR (SELECT 'drop table My_Table' as malicious_code from...)
DO
    SET SQL = CUR1.malicious_code;
    PREPARE S1 FROM SQL;
    EXECUTE S1;
END FOR;