我可以将光标的位置重置为开始吗？ [英] Can I reset cursor's position to the beginning?

问题描述

与主题中的一样。我可以简单地将光标的位置重置为Transact-SQL的开头，以便它可以再次在表上运行吗？我想在以下情况下重置它：

As in the topic. Can I simply reset cursor's position to the beginning in Transact-SQL, so it can run again over the table? I want to reset it in the following context:

DECLARE @userID INT
DECLARE user_cursor CURSOR FOR SELECT userID FROM users

WHILE /* some condition */
BEGIN
...

    FETCH NEXT FROM user_cursor INTO @userID

    IF @@FETCH_STATUS = 0
    BEGIN
        /*... here goes the reset of the cursor ...*/
    END

...
END

推荐答案

您需要将光标声明为滚动，像这样

you need to declare your cursor as scroll, like this

declare c scroll cursor for (select statement); 

然后随时使用以下

fetch first from c;

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