Question

此查询中的“选择”附近出现错误的语法错误。此处的目标是批量删除alohaftplog中的行1000。

DECLARE @Batch INT = 1000
DECLARE @DateLimit DATETIME = CONVERT(VARCHAR(15), GETDATE() - 30, 101)
DECLARE @Cnt INT = 0

SET @Cnt = SELECT COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimit 

WHILE @Cnt > 0
BEGIN
    DELETE TOP(@Batch) FROM AlohaFtpLog WHERE DATE < @DateLimit
    SET @Cnt = SELECT COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimit
END

Answer 1

SET @Cnt = SELECT COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimit

需要是：

SET @Cnt = (SELECT COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimit)

OR：

SELECT @Cnt = COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimit

Answer 2

SELECT @Cnt = COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimi

Answer 3

我很确定您需要一组括号。

SET @Cnt = (SELECT COUNT(*) FROM AlohaFtpLog WHERE DATE < @DateLimit)

是什么导致SELECT错误附近的语法不正确？

3 个答案: