Sql 我需要在数据库中创建一个视图

当两列引用同一个表时，我需要在数据库中创建一个视图。我可以创建如下视图：

CREATE VIEW [dbo].[ViewJournal]
AS 
    SELECT 
        J. d, J.date, J.drac, L.name as draccount, J.crac,
        L.name as craccount, J.dramt, J.cramt, J.lf,
        J.description, J.voucherType, J.reg_date, J.last_update,
        J.active 
    FROM 
        Journal J, Ledger L 
    WHERE 
        J.drac = L.Id

但结果并没有显示实际结果

这里，

crac

和

drac

是从

分类账

表中引用的

日记账

表：

CREATE TABLE [dbo].[Journal] 
(
   [Id]             DECIMAL (18)    IDENTITY (1, 1) NOT NULL,
   [date]           DATETIME        NULL,
   [drac]           DECIMAL (18)    NULL,
   [crac]           DECIMAL (18)    NULL,
   [dramt]          DECIMAL (18, 2) NULL,
   [cramt]          DECIMAL (18, 2) NULL,
   [reg_date]       DATETIME        NULL,
   [last_update]    DATETIME        NULL,
   [active]         INT             NULL,
   [lf]             VARCHAR (50)    NULL,
   [description]    NVARCHAR (150)  NULL,
   [voucherType]    VARCHAR (50)    NULL,
   [sales]          VARCHAR (50)    NULL,
   [purchase]       VARCHAR (50)    NULL,
   [cash_paymentno] VARCHAR (50)    NULL,
   [cash_receiptno] VARCHAR (50)    NULL,
   [expense]        VARCHAR (50)    NULL,
   [income]         VARCHAR (50)    NULL,
   [advance]        VARCHAR (50)    NULL,
   [remunaration]   VARCHAR (50)    NULL,

   CONSTRAINT [PK_Journal] PRIMARY KEY CLUSTERED ([Id] ASC),
   CONSTRAINT [FK_Ledger] FOREIGN KEY ([drac]) REFERENCES [dbo].[Ledger] ([Id]) ON DELETE CASCADE ON UPDATE CASCADE
);

CREATE TABLE [dbo].[Ledger] 
(
    [Id]             DECIMAL (18)  IDENTITY (1, 1) NOT NULL,
    [name]           NVARCHAR (50) NULL,
    [type]           NVARCHAR (50) NULL,
    [classification] VARCHAR (50)  NULL,
    [realornominal]  VARCHAR (50)  NULL,
    [reg_date]       DATETIME      NULL,
    [last_update]    DATETIME      NULL,
    [active]         DECIMAL (2)   NULL,
    [depree]         VARCHAR (50)  NULL,

    CONSTRAINT [PK_Ledger] PRIMARY KEY CLUSTERED ([Id] ASC)
);

分类账

表格：

CREATE TABLE [dbo].[Journal] 
(
   [Id]             DECIMAL (18)    IDENTITY (1, 1) NOT NULL,
   [date]           DATETIME        NULL,
   [drac]           DECIMAL (18)    NULL,
   [crac]           DECIMAL (18)    NULL,
   [dramt]          DECIMAL (18, 2) NULL,
   [cramt]          DECIMAL (18, 2) NULL,
   [reg_date]       DATETIME        NULL,
   [last_update]    DATETIME        NULL,
   [active]         INT             NULL,
   [lf]             VARCHAR (50)    NULL,
   [description]    NVARCHAR (150)  NULL,
   [voucherType]    VARCHAR (50)    NULL,
   [sales]          VARCHAR (50)    NULL,
   [purchase]       VARCHAR (50)    NULL,
   [cash_paymentno] VARCHAR (50)    NULL,
   [cash_receiptno] VARCHAR (50)    NULL,
   [expense]        VARCHAR (50)    NULL,
   [income]         VARCHAR (50)    NULL,
   [advance]        VARCHAR (50)    NULL,
   [remunaration]   VARCHAR (50)    NULL,

   CONSTRAINT [PK_Journal] PRIMARY KEY CLUSTERED ([Id] ASC),
   CONSTRAINT [FK_Ledger] FOREIGN KEY ([drac]) REFERENCES [dbo].[Ledger] ([Id]) ON DELETE CASCADE ON UPDATE CASCADE
);

CREATE TABLE [dbo].[Ledger] 
(
    [Id]             DECIMAL (18)  IDENTITY (1, 1) NOT NULL,
    [name]           NVARCHAR (50) NULL,
    [type]           NVARCHAR (50) NULL,
    [classification] VARCHAR (50)  NULL,
    [realornominal]  VARCHAR (50)  NULL,
    [reg_date]       DATETIME      NULL,
    [last_update]    DATETIME      NULL,
    [active]         DECIMAL (2)   NULL,
    [depree]         VARCHAR (50)  NULL,

    CONSTRAINT [PK_Ledger] PRIMARY KEY CLUSTERED ([Id] ASC)
);

---

在当前查询中，您加入的是

J.drac=L.Id

，这意味着

L

将始终是

J.drac

中引用的记录，而不管

J.crac

的值如何

按照我的理解，您希望引用

分类账

表中的两条不同记录。你需要两个连接

SELECT 
    J.Id, J.date, J.drac, D.name as draccount, J.crac,
    C.name as craccount, J.dramt, J.cramt, J.lf,
    J.description, J.voucherType, J.reg_date, J.last_update,
    J.active 
FROM Journal J
INNER JOIN Ledger D ON J.drac = D.Id
INNER JOIN Ledger C ON J.crac = C.Id

---

当同一个查询不在视图中时，它是否工作？您是否收到异常，或者仅仅是结果不是您所期望的结果？您从

分类账

表中选择的唯一字段是

名称

，您要抓取该字段两次。这是故意的吗？6 11/20/2015 12:00:00 AM 6销售账户7销售账户200.00 200.00日记帐11/20/2015 11:09:33 AM 11/20/2015 11:09:33 AM 17 11/20/2015 12:00:00 AM 8现金账户6现金账户200.00 200.00日记帐11/20/2015 11:24:51 AM 11/20 11:24:51 AM 1-旧样式逗号分隔的表格列表样式被替换为ANSI-92 SQL标准（20多年前）中正确的ANSI

JOIN

语法及其使用不受欢迎，这是因为您正在为两个字段选择

Ledger.name

：

L.name作为draccount，…，L.name作为craccount