sqlserver获取自然周数据

Posted 2020-12-10 dengjb

DECLARE @table TABLE
(
    id INT IDENTITY,
   CreateDate DATE
);

INSERT INTO @table
(
    CreateDate
)
SELECT ‘2020-06-07‘--上周日
UNION ALL
SELECT ‘2020-06-08‘--本周一
UNION ALL
SELECT ‘2020-06-09‘--本周二
UNION ALL
SELECT ‘2020-06-10‘--本周三
UNION ALL
SELECT ‘2020-06-11‘--本周四
UNION ALL
SELECT ‘2020-06-12‘--本周五
UNION ALL
SELECT ‘2020-06-13‘--本周六
UNION ALL
SELECT ‘2020-06-14‘--本周日
UNION ALL
SELECT ‘2020-06-15‘--下周一

DECLARE @date DATE = ‘2020-06-12‘;--本周五
DECLARE @wkStart DATE;
SET @wkStart = DATEADD(DAY, - (DATEPART(WEEKDAY, @date) - 2), @date);
IF (@wkStart > @date)
BEGIN
    SET @wkStart = DATEADD(WEEK, -1, @wkStart);
END;
DECLARE @wkend DATE = DATEADD(WEEK, 1, @wkStart);

--截止到今天自然周数据
SELECT *,DATENAME(dw, CONVERT(DATETIME,CreateDate) + @@DateFirst) time
FROM @table
WHERE CreateDate >= @wkStart
      AND CreateDate < @wkend
      AND DATEDIFF(DAY, CreateDate, GETDATE()) >= 0;

--本周自然周数据
SELECT *,DATENAME(dw, CONVERT(DATETIME,CreateDate) + @@DateFirst )  time
FROM @table
WHERE CreateDate >= @wkStart
      AND CreateDate < @wkend