大家好，又见面了，我是你们的朋友全栈君。
Declare Sursors CURSOR
for select u.U_UserName,u.U_ID from Users u; –where u.UserName like ‘%w%’;
–打开游标
open Sursors;
–提取数据
–格式
declare @userid varchar(50)
declare @username varchar(50)
fetch next from Sursors into @username,@userid –移到游标中的下一行并把游标中的列值获取到Into中列出的变量中
while @@fetch_status=0 –检查是否读取到数据
begin
print ‘编号:’+ @userid
print ‘姓名:’+ @username
–应用取出数据(存放在变量中)进行操作的语句
fetch Sursors into @username,@userid
end
close Sursors
deallocate Sursors
BEGIN TRAN
–声明游标
DECLARE @uid varchar(50)
DECLARE Sursors CURSOR FOR
SELECT U_ID FROM Users
OPEN Sursors
FETCH NEXT FROM Sursors INTO @uid
WHILE (@@FETCH_STATUS = 0)
BEGIN
–刪除表spb_Users中的記錄
DELETE FROM Users WHERE U_ID = @uid
IF(@@ERROR != 0)
BEGIN
ROLLBACK TRAN
RETURN
END
–刪除表spb_Users中的記錄
DELETE FROM Users WHERE U_ID = @uid
IF(@@ERROR != 0)
BEGIN
ROLLBACK TRAN
RETURN
END
FETCH NEXT FROM Sursors
END
CLOSE Sursors
DEALLOCATE Sursors
COMMIT TRAN
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