SqlServer-简单的事务和游标结合

IF EXISTS (SELECT *  FROM  sys.procedures WHERE name='proc_tranDemo')
 DROP PROCEDURE  proc_tranDemo
 GO 
 
 CREATE PROC proc_tranDemo
 AS
    DECLARE @employeeId INT;
    DECLARE @errorCount INT; 
    DECLARE my_cursor CURSOR SCROLL
    FOR
        ( SELECT    employee_id
          FROM      hrt_staff_base
          WHERE     staff_status = -1
        );
    --打开游标
    OPEN my_cursor;
    --取第一个游标对象
    FETCH FIRST FROM my_cursor  INTO @employeeId;
    ---0 FETCH 语句成功
    ---1 FETCH 语句失败或此行不在结果集中
    ---2 被提取的行不存在
    WHILE ( @@FETCH_STATUS = 0 )
        BEGIN 
            SET @errorCount = 0;
            BEGIN TRAN my_tran;
            BEGIN TRY   
            UPDATE hrt_staff_base SET  sf_modifier='事务执行成功！' WHERE employee_id=@employeeId
            END TRY
            BEGIN CATCH 
                SET @errorCount = @errorCount + 1;
            END CATCH;
            PRINT @errorCount;
            IF ( @errorCount > 0 )
                BEGIN
                    ROLLBACK TRAN my_tran;
                END;
            ELSE
                BEGIN 
                    COMMIT TRAN my_tran;
                END; 
          --取下一个游标      
            FETCH NEXT FROM my_cursor INTO @employeeId;                  
        END;
        
        --关闭游标
    CLOSE my_cursor; 
        --释放游标
    DEALLOCATE my_cursor;
        GO 
       
    
    --执行存储过程
    EXEC proc_tranDemo
    GO 
    SELECT * FROM hrt_staff_base WHERE  sf_modifier='事务执行成功！'