语法结构:

FETCH cursor_name INTO var_name [, var_name] ...

解释说明:

该语句从指定的游标取下一行值,并向下移动一次光标。

If no more rows are available, a No Data condition occurs with SQLSTATE value 02000. To detect this condition, you can set up a handler for it (or for a NOT FOUND condition).

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