在 6 个月范围内对库存进行分组

Question

我在前 6 个月内一直在拉动总库存。如何在同一查询中提取过去 6 个月内的总库存？

另外我想要查询的结果如下所示：

  Stock Code | the first 6 months   |  the second 6 months   etc.

我的 SQL 查询：

 SELECT TOP (100) PERCENT STOK_KODU, 
    COALESCE (SUM(CASE WHEN kod1 = 'G' THEN kod2 ELSE 0 END), 0) 
   - COALESCE (SUM(CASE WHEN kod1 = 'C' THEN kod2 ELSE 0 END), 0) AS StokToplam1 
FROM s_hareket WHERE (STOK_KODU BETWEEN '01001' AND '75000') 
and (tarih BETWEEN '2011-01-01' and '2011-06-30') 
GROUP BY STOK_KODU 
ORDER BY STOK_KODU

Answer 1

您应该可以使用 dateadd 和 getdate 函数来做到这一点：

SELECT TOP ( 100 ) PERCENT
        STOK_KODU ,
        COALESCE(SUM(CASE WHEN kod1 = 'G' THEN kod2
                          ELSE 0
                     END), 0) - COALESCE(SUM(CASE WHEN kod1 = 'C' THEN kod2
                                                  ELSE 0
                                             END), 0) AS StokToplam1
FROM    s_hareket
WHERE   ( STOK_KODU BETWEEN '01001' AND '75000' )
        AND ( tarih BETWEEN dateadd(month,-6,GETDATE()) AND GETDATE() )
GROUP BY STOK_KODU
ORDER BY STOK_KODU

如果我正确理解您的问题，您希望合并结果，然后对其进行旋转。这导致以下查询：

SELECT * FROM 
    (SELECT TOP ( 100 ) PERCENT
            'last' AS t,
            STOK_KODU ,
            COALESCE(SUM(CASE WHEN kod1 = 'G' THEN kod2
                              ELSE 0
                         END), 0) - COALESCE(SUM(CASE WHEN kod1 = 'C' THEN kod2
                                                      ELSE 0
                                                 END), 0) AS StokToplam1
    FROM    s_hareket
    WHERE   ( STOK_KODU BETWEEN '01001' AND '75000' )
            AND ( tarih BETWEEN dateadd(month,-6,GETDATE()) AND GETDATE() )
    GROUP BY STOK_KODU
    ORDER BY STOK_KODU

    UNION ALL 
    SELECT TOP ( 100 ) PERCENT
            'first' AS t,
            STOK_KODU ,
            COALESCE(SUM(CASE WHEN kod1 = 'G' THEN kod2
                              ELSE 0
                         END), 0) - COALESCE(SUM(CASE WHEN kod1 = 'C' THEN kod2
                                                      ELSE 0
                                                 END), 0) AS StokToplam1
    FROM    s_hareket
    WHERE   ( STOK_KODU BETWEEN '01001' AND '75000' )
            AND ( tarih BETWEEN '2011-01-01' and '2011-06-30' )
    GROUP BY STOK_KODU
    ORDER BY STOK_KODU) AS sourceTable 
PIVOT (
    SUM(StokToplam1)
    FOR T IN ([first], [last])
) AS p