# SqlServer 游标循环处理数据

CREATE PROCEDURE Job_UpdateAuthor --创建PROCEDURE
AS
    BEGIN
        DECLARE UpdateAuthorCursor CURSOR --定义游标
        FOR
            SELECT  COUNT(*) AS ArticleNumber ,
                    SUM(ShowHits) AS ArticleHits ,
                    Author
            FROM    dbo.Gas_Article
            WHERE   Author IN ( SELECT  Name
                                FROM    dbo.Gas_ArticleAuthor
                                WHERE   IsDelete = 0 )
            GROUP BY Author --查出需要的数据至游标中

        OPEN UpdateAuthorCursor --打开游标

        DECLARE @Number INT, @Hits INT, @Author NVARCHAR(255)
        FETCH NEXT FROM UpdateAuthorCursor INTO @Number, @Hits, @Author --读取第一行数据，赋值给变量

        WHILE @@FETCH_STATUS = 0
            BEGIN
                UPDATE  dbo.Gas_ArticleAuthor
                SET     ArticleNumber = @Number ,
                        ArticleHits = @Hits
                WHERE   Name = @Author -- 更新dbo.Gas_ArticleAuthor数据

                FETCH NEXT FROM UpdateAuthorCursor INTO @Number, @Hits, @Author --读取下一行数据
            END

        CLOSE UpdateAuthorCursor --关闭游标

        DEALLOCATE UpdateAuthorCursor --释放游标
    END
GO
 
        复制成功