SQL简单的日报和月报

    --320, SQL SERVER  日报

--查询2009-01-01当天客户A1,A2,A3的订单数量

SELECT Cust_Name

     , CONVERT(CHAR(10), Order_Date, 120) Order_Date

     , SUM(Qty) Qty

FROM Orders_Big

WHERE 1=1

     AND Cust_Name IN ('A1', 'A2', 'A3')

     AND Order_Date >= '2009-01-01' 

     AND Order_Date<'2009-01-02'

     /*AND Order_Date  -- BETWEEN...AND相当于>=和<=

            BETWEEN '2009-01-01'

                 AND '2009-01-02'*/

GROUP BY Cust_Name

     , CONVERT(CHAR(10), Order_Date, 120)

ORDER BY 2, 1





--321. ORACLE 日报

--查询2009-01-01当天客户A1,A2,A3的订单数量

SELECT Cust_Name

  , TO_CHAR(Order_Date, 'YYYY-MM-DD') Order_Date --方法一:转换成字符串类型

  --, TRUNC(Order_Date) Order_Date  --方法二:将时分秒信息截断

  , SUM(Qty) Qty

FROM Orders_Big

WHERE 1=1

     AND Cust_Name IN ('A1', 'A2', 'A3')

     AND Order_Date >= DATE'2009-01-01' 

     AND Order_Date<DATE'2009-01-02'

GROUP BY Cust_Name

       , TO_CHAR(Order_Date, 'YYYY-MM-DD')--方法一

       --, TRUNC(Order_Date)--方法二

ORDER BY 2, 1





------------------------------10.2------------------------------------

--326,SQL SERVER 月报

SELECT Cust_Name

     , CONVERT(CHAR(7), Order_Date, 120) Order_YrMs

     , CAST(CONVERT(CHAR(7), Order_Date, 120) + '-01' AS DATETIME) Order_Date

     , SUM(Qty) Qty

FROM Orders_Big

WHERE 1=1

   AND Cust_Name IN ('A1', 'A2', 'A3')

   AND Order_Date >= '2009-01-01' 

   AND Order_Date<'2009-02-01'

GROUP BY Cust_Name

        , CONVERT(CHAR(7), Order_Date, 120)

ORDER BY 2, 1



--326, ORACLE

SELECT Cust_Name

    , TO_CHAR(Order_Date, 'YYYY-MM') Order_YrMs --方法1

    --, TRUNC(Order_Date, 'MM') Order_Date--方法2

    , SUM(Qty) Qty

FROM Orders_Big

WHERE 1=1

    AND Cust_Name IN ('A1', 'A2', 'A3')

    AND Order_Date >= DATE'2009-01-01' 

    AND Order_Date<DATE'2009-02-01'

GROUP BY Cust_Name

    , TO_CHAR(Order_Date, 'YYYY-MM')--方法1

    --, TRUNC(Order_Date, 'MM')--方法2

ORDER BY 2, 1
  

SQL简单的日报和月报