关键字'SELECT'变量附近的语法不正确

Question

关键字＆＃39; SELECT＆＃39;附近的语法不正确... 以下代码生成错误...

DECLARE @A VARCHAR(12)
SET @A = SELECT TOP 1 MBR_ID FROM MBR_IDS ORDER BY NEWID()
SELECT @A 

Answer 1

作为JoeFletch的好答案的替代方法，您可以使用括号()来评估标量上下文中的查询：

SET @A = (SELECT TOP 1 MBR_ID FROM MBR_IDS ORDER BY NEWID())

Answer 2

您需要重新构建SELECT声明。

DECLARE @A VARCHAR(12)
SELECT TOP 1 @A = MBR_ID FROM MBR_IDS ORDER BY NEWID()
SELECT @A