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SELECT SUM(值)
FROM 表名
WHERE CONVERT(DATE,时间列) = CONVERT(date, GETDATE()) and DATEPART(HH,时间列) = 0
SELECT
AAAA,
BBBB,
Date
FROM
XXXX_tb WHERE convert(varchar(10),Date,120)=convert(varchar(10),getdate(),120)
AND ltrim(datepart(hh,Date))BETWEEN 0 AND 1
SELECT
ltrim(datepart(hh,Date))
FROM
xxxx_tb WHERE ltrim(datepart(hh,Date))=17