实现按部门月卡余额总额分组统计的SQL查询代码

SELECT dp.dpname1 AS 部门, cust_dp_SumOddfre.sum_oddfare AS 当月卡总余额
FROM (SELECT T_Department.DpCode1, SUM(custid_SumOddfare_group.sum_oddfare)
              AS sum_oddfare
        FROM (SELECT l2.CustomerID, SUM(r1.oddfare) AS sum_oddfare
                FROM (SELECT CustomerID, MAX(OpCount) AS max_opcount
                        FROM (SELECT CustomerID, OpCount, RTRIM(CAST(YEAR(OpDt)
                                      AS char)) + ''''-'''' + RTRIM(CAST(MONTH(OpDt) AS char))
                                      + ''''-'''' + RTRIM(DAY(0)) AS dt
                                FROM T_ConsumeRec
                                UNION
                                SELECT CustomerID, OpCount, RTRIM(CAST(YEAR(cashDt)
                                      AS char)) + ''''-'''' + RTRIM(CAST(MONTH(cashDt) AS char))
                                      + ''''-'''' + RTRIM(DAY(0)) AS dt
                                FROM T_Cashrec) l1
                        WHERE (dt <= ''''2005-6-1'''')/*输入查询月份,可用参数传递*/
                        GROUP BY CustomerID) l2 INNER JOIN
                          (SELECT CustomerID, OpCount, oddfare
                         FROM T_ConsumeRec
                         UNION
                         SELECT CustomerID, OpCount, oddfare
                         FROM T_Cashrec) r1 ON l2.CustomerID = r1.CustomerID AND
                      r1.OpCount = l2.max_opcount
                GROUP BY l2.CustomerID) custid_SumOddfare_group INNER JOIN
              T_Customers ON
              custid_SumOddfare_group.CustomerID = T_Customers.CustomerID INNER JOIN
              T_Department ON SUBSTRING(T_Customers.Account, 1, 2)
              = T_Department.DpCode1 AND SUBSTRING(T_Customers.Account, 3, 2)
              = T_Department.DpCode2 AND SUBSTRING(T_Customers.Account, 5, 3)
              = T_Department.DpCode3
        GROUP BY DpCode1) cust_dp_SumOddfre INNER JOIN
          (SELECT DISTINCT dpcode1, dpname1
         FROM t_department) dp ON dp.dpcode1 = cust_dp_SumOddfre.DpCode1

附：查询用到的基本表形成脚本：

CREATE TABLE [dbo].[T_CashRec] ( --出纳明细账本
 [StatID] [tinyint] NOT NULL ,
 [CashID] [smallint] NOT NULL ,
 [Port] [tinyint] NOT NULL ,
 [Term] [tinyint] NOT NULL ,
 [CashDt] [datetime] NOT NULL ,--存取款时间
 [CollectDt] [datetime] NOT NULL ,
 [CustomerID] [int] NOT NULL ,
 [OpCount] [int] NOT NULL ,--某卡的操作次数，只累加
 [InFare] [money] NOT NULL ,
 [OutFare] [money] NOT NULL ,
 [SumFare] [money] NOT NULL ,
 [OddFare] [money] NOT NULL ,--此次操作后该卡的余额
 [MngFare] [money] NOT NULL ,
 [Hz] [tinyint] NOT NULL ,
 [CurSum] [smallmoney] NULL ,
 [CurCount] [smallint] NULL ,
 [CardSN] [tinyint] NULL
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[T_ConsumeRec] ( --消费明细账本
 [StatID] [tinyint] NOT NULL ,
 [Port] [tinyint] NOT NULL ,
 [Term] [tinyint] NOT NULL ,
 [CustomerID] [int] NOT NULL ,
 [OpCount] [int] NOT NULL , --某卡的操作次数，只累加
 [OpDt] [datetime] NOT NULL ,--消费时间
 [CollectDt] [datetime] NOT NULL ,
 [MealID] [tinyint] NOT NULL ,
 [SumFare] [smallmoney] NOT NULL ,
 [OddFare] [smallmoney] NOT NULL ,--此次操作后该卡的余额
 [MngFare] [smallmoney] NOT NULL ,
 [OpFare] [smallmoney] NOT NULL ,
 [Hz] [tinyint] NOT NULL ,
 [MenuID] [smallint] NULL ,
 [MenuNum] [tinyint] NULL ,
 [OddFarePre] [smallmoney] NULL ,
 [RecNo] [smallint] NULL ,
 [CardSN] [tinyint] NOT NULL ,
 [CardVer] [tinyint] NULL
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[T_Customers] ( --客户账本
 [CustomerID] [int] NOT NULL , --客户号，主键
 [StatCode] [varchar] (3) COLLATE Chinese_PRC_CI_AS NOT NULL ,
 [Account] [varchar] (7) COLLATE Chinese_PRC_CI_AS NOT NULL ,--单位代号
 [Name] [varchar] (12) COLLATE Chinese_PRC_CI_AS NOT NULL ,
 [CardNo] [int] NOT NULL ,
 [CardSN] [tinyint] NULL ,
 [CardType] [tinyint] NOT NULL ,
 [Status] [tinyint] NOT NULL ,
 [OpenDt] [datetime] NOT NULL ,
 [CashID] [smallint] NOT NULL ,
 [SumFare] [smallmoney] NOT NULL ,
 [ConsumeFare] [smallmoney] NOT NULL ,
 [OddFare] [smallmoney] NOT NULL ,
 [OpCount] [int] NOT NULL ,
 [CurSubsidyFare] [smallmoney] NOT NULL ,
 [SubsidyDT] [datetime] NOT NULL ,
 [SubsidyOut] [char] (1) COLLATE Chinese_PRC_CI_AS NOT NUL

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