DCount与SQL SELECT COUNT（*）？

Question

我正试图根据分配给他们的采购订单来计算发送给供应商的所有物料。但我似乎无法控制显示基于采购订单实例的多个项目 - 它会一直抛出一个#name？或#error！当表单被激活时，文本框中的消息。

为tblPODetail

CREATE语句

USE [instkeeper_test] 
GO 


SET ANSI_NULLS ON 
GO 

SET QUOTED_IDENTIFIER ON 
GO 

CREATE TABLE [dbo].[tblPODetail](
    [intPurchaseOrderInstance] [int] IDENTITY(1,1) NOT NULL, 
    [intPONumber] [int] NOT NULL, 
    [datDateEntered] [datetime] NOT NULL, 
    [bolPOOpen] [bit] NOT NULL, 
    [intRMANumber] [nvarchar](255) NULL, 
    [strSupplierCode] [nvarchar](50) NOT NULL, 
    [strSupplierLastAddress] [nvarchar](50) NULL, 
    [strSupplierLastCity] [nvarchar](50) NULL, 
    [strSupplierLastState] [nvarchar](50) NULL, 
    [strSupplierLastPostalCode] [nvarchar](50) NULL, 
    [strSupplierLastCountry] [nvarchar](50) NULL, 
    [strSupplierLastPhone] [nvarchar](50) NULL, 
    [strSupplierLastFax] [nvarchar](50) NULL, 
    [datDateSent] [datetime] NULL, 
    [datDateReceived] [datetime] NULL, 
    [bolAdvGageTrakNoTouch] [bit] NOT NULL, 
    [bolAdvHardCopies] [bit] NOT NULL, 
    [bolFreightShip] [bit] NOT NULL, 
    [bolReturnableUsed] [bit] NOT NULL, 
    [bolInHouse] [bit] NOT NULL, 
    [strUPSTrackNumOut] [nvarchar](255) NULL, 
    [strFedExTrackNumOut] [nvarchar](255) NULL, 
    [strFreightTrackNumOut] [nvarchar](255) NULL, 
    [strUPSTrackNumIn] [nvarchar](255) NULL, 
    [strFedExTrackNumIn] [nvarchar](255) NULL, 
    [strFreightTrackNumIn] [nvarchar](255) NULL, 
    [SSMA_TimeStamp] [timestamp] NOT NULL 
) ON [PRIMARY] 

GO 

ALTER TABLE [dbo].[tblPODetail] WITH CHECK ADD CONSTRAINT [SSMA_CC$tblPODetail$strSupplierCode$disallow_zero_length] CHECK ((len([strSupplierCode])>(0))) 
GO 

ALTER TABLE [dbo].[tblPODetail] CHECK CONSTRAINT [SSMA_CC$tblPODetail$strSupplierCode$disallow_zero_length] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__intPO__6C190EBB] DEFAULT ((0)) FOR [intPONumber] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__datDa__6D0D32F4] DEFAULT (getdate()) FOR [datDateEntered] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__bolPO__6E01572D] DEFAULT ((1)) FOR [bolPOOpen] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__bolAd__6EF57B66] DEFAULT ((1)) FOR [bolAdvGageTrakNoTouch] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__bolAd__6FE99F9F] DEFAULT ((1)) FOR [bolAdvHardCopies] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__bolFr__70DDC3D8] DEFAULT ((0)) FOR [bolFreightShip] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__bolRe__71D1E811] DEFAULT ((0)) FOR [bolReturnableUsed] 
GO 

ALTER TABLE [dbo].[tblPODetail] ADD CONSTRAINT [DF__tblPODeta__bolIn__72C60C4A] DEFAULT ((0)) FOR [bolInHouse] 
GO 

为tblPOGaugeDetail

的，我想计数出现在

SELECT dbo_tblPODetail.intPurchaseOrderInstance, dbo_tblPODetail.strSupplierCode, dbo_tblPODetail.bolPOOpen, dbo_tblPODetail.intPONumber, dbo_tblPODetail.datDateSent 
FROM dbo_tblPODetail 
WHERE (((dbo_tblPODetail.bolPOOpen)=True)) 
ORDER BY dbo_tblPODetail.datDateSent; 

我有采购订单的详细信息CREATE语句

USE [instkeeper_test] 
GO 


SET ANSI_NULLS ON 
GO 

SET QUOTED_IDENTIFIER ON 
GO 

CREATE TABLE [dbo].[tblPOGaugeDetail](
    [intItemPOID] [int] IDENTITY(1,1) NOT NULL, 
    [intGagePOID] [int] NOT NULL, 
    [strGageDetailID] [nvarchar](50) NULL, 
    [datGageSent] [datetime] NULL, 
    [datGageReceived] [datetime] NULL, 
    [bolGageCalibrate] [bit] NOT NULL, 
    [bolGageRepair] [bit] NOT NULL, 
    [bolGageEvaluate] [bit] NOT NULL, 
    [bolGageAccredited] [bit] NOT NULL, 
    [bolGageReturned] [bit] NOT NULL, 
    [bolGageException] [bit] NOT NULL, 
    [bolGageExceptResolved] [bit] NOT NULL, 
    [bolGageLeavePriceBlank] [bit] NOT NULL, 
    [intGageCost] [real] NULL, 
    [intTurnaroundDaysOut] [int] NULL, 
    [SSMA_TimeStamp] [timestamp] NOT NULL, 
CONSTRAINT [tblPOGaugeDetail$PrimaryKey] PRIMARY KEY CLUSTERED 
(
    [intItemPOID] ASC 
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] 
) ON [PRIMARY] 

GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] WITH CHECK ADD CONSTRAINT [tblPOGaugeDetail$tblPODetailtblPOGaugeDetail] FOREIGN KEY([intGagePOID]) 
REFERENCES [dbo].[tblPODetail] ([intPurchaseOrderInstance]) 
ON UPDATE CASCADE 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] CHECK CONSTRAINT [tblPOGaugeDetail$tblPODetailtblPOGaugeDetail] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [intGagePOID] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((1)) FOR [bolGageCalibrate] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageRepair] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageEvaluate] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageAccredited] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageReturned] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageException] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageExceptResolved] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [bolGageLeavePriceBlank] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [intGageCost] 
GO 

ALTER TABLE [dbo].[tblPOGaugeDetail] ADD DEFAULT ((0)) FOR [intTurnaroundDaysOut] 
GO 

查询语句有点沮丧，因为我已经读了一些DCount（）和SELECT COUNT（*），但是似乎无法让他们工作。任何帮助将不胜感激！提前致谢！

- 编辑2008.02.04 @1542小时 -

这是SELECT COUNT我试图在代码中使用时，子窗体的对当前事件触发的例子：

SELECT COUNT(*) AS ItemsSent 
FROM [dbo_tblPOGaugeDetail] 
WHERE [dbo_tblPOGageDetail]![intGagePOID] = [dbo_tblPODetail]![intPurchaseOrderInstance] 

这是连接到子窗体中控件的= DCOUNT语句的示例。

=DCOUNT("*", "[dbo_tblPOGaugeDetail]", "[intGagePOID] = [Forms]![frmSupplierInfoMain]![subfrmOpenPOBySupplierID]![intPurchaseOrderInstance]") 

这些都没有工作 - 可悲的是。

Answer 1

您的查询没有计数（*）吗？

使用DCount的第一个参数的实际字段名称 从where字符串中获取控件名称。

For DCOUNT("[intItemPOID],"[dbo_tblPOGaugeDetail]","[intGagePOID]=" & Forms]![frmSupplierInfoMain]![subfrmOpenPOBySupplierID]![intPurchaseOrderInstance])