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