我是SQL和存储过程的新手,我有点卡住了 - 所以任何帮助都会受到赞赏
我如何遍历每一行并为其分配我正在生成的随机值?
这是我的Storedproc:
CREATE PROCEDURE StoredProc8
AS
BEGIN
DECLARE @total INT
DECLARE @Count INT = 0
DECLARE @Random INT = 0
SELECT @total = COUNT(CustomerID) FROM Customers
WHILE(@Count<= @total)
BEGIN
SELECT @Random = 2 * RAND()
EXEC ('update Customers set col1= ' + @Random )
SELECT @Count = @Count+1
END
END
答案 0 :(得分:1)
如果你只需要随机分配0或1 - 你可以使用RAND()和随机种子:
UPDATE Customers SET COL1 = RAND(CHECKSUM(NEWID()))*2