ms-access-2007

问题 I am new to MS Access. Could anybody tell me how to define a composite primary key in MS Access 2007. 回答1: If memory serves correctly, you can hold SHIFT while selecting the fields in the design view. Once you've selected all of the fields that are to be part of the key, press the primary key button. 回答2: Already answered, but I wanted to chime in with additional info. After solving my related problem, holding "ctrl" + clicking multiple columns in design view and then clicking the "primary

问题 I am new to MS Access. Could anybody tell me how to define a composite primary key in MS Access 2007. 回答1: If memory serves correctly, you can hold SHIFT while selecting the fields in the design view. Once you've selected all of the fields that are to be part of the key, press the primary key button. 回答2: Already answered, but I wanted to chime in with additional info. After solving my related problem, holding "ctrl" + clicking multiple columns in design view and then clicking the "primary

问题 I have been searching for a way to extract images from access forms. A search on Google will nearly always point to OLEtoDisk. This software allows to export images stored in OLE fields inside access tables. This is not what I want. I have a form with some logos, headers and background images. Those images are making the database become bigger and bigger (because they are embedded in the form). I would extract them, place them on our server together with the back-end file and add them back to

问题 I have the following data that I want to create a crosstab query: ID CallNo CopyrightYear 1 AH 2000 2 AB 2000 3 BC 2000 4 AH 2002 5 ZA 2005 6 BC 2001 7 AP 2003 This is the crosstab query that I currently have: TRANSFORM Count(Table1.[ID]) AS CountOfID SELECT Table1.[CallNo], Count(Table1.[ID]) AS [Total Of ID] FROM Table1 GROUP BY Table1.[CallNo] PIVOT Table1.[CopyrightYear]; So my question is on how can I group copyright year like from 2000 to 2002 and 2003 to 2005 and so on... Expected

问题 So I'm trying to run an aggregation query in a MS Access 2007-2010 database that groups by values compared across a few fields in 2 tables. When I try to run the query, I get the error "The field is too small to accept the amount of data you attempted to add" SELECT * FROM orderTable AS a INNER JOIN availableInventory AS b ON (a.sellerID = b.sellerID) AND (a.daysofweek = b.daysofweek) AND (a.supplierID = b.supplierID); this error doesn't appear when I remove one of the constraints. Is this a

问题 One of the best practices as specified by Microsoft for Access Development is splitting Access application into 2 parts; Front End that hold all the object except tables and the Back End that holds the tables. The msdn page links there to the article Splitting Microsoft Access Databases to Improve Performance and Simplify Maintainability that describes the process in details. It is recommended that in multi user environment the Back End is stored on the server/shared folder while the Front

问题 First, let me preface this by saying I know next to nothing about Access, VBA, or SQL. But, when the boss asks you to do something, you do it. I apologize in advance for poor formatting, improper DB management, and my general lack of knowledge. Anyways, I have a large table in a query that I need to use combo boxes to organize. The query's name is FinalTable, and the Fields that I would like to have the combo boxes named from are ID Maker.Billet Material, ID Maker.Billet Number, ID Maker.Test

问题 This question already has an answer here : ADD SQL QUERY STAT (1 answer) Closed 5 years ago . I'm trying to update an Access database using a SQL query, whenever I click the save button, it generates an error An unhandled exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll Additional information: No value given for one or more required parameters. And highlights .ExecuteNonQuery() . Can you guys help me on this? I'm new to vb.net. Thanks in advance. Private Sub

问题 I'm pulling some data in an SQL query to output to PHP as below. , DATEDIFF('d',Activity.CreatedOn, NOW()) As Dif , DATEDIFF('d',qSWxSRLastUpdated.MaxOfCreatedOn, NOW()) As LastUpd , FORMAT((qSWxSRLastUpdated.MaxOfCreatedOn), 'DD-MMM-YYYY') AS Start , FORMAT((Activity.CreatedOn), 'DD-MMM-YYYY') AS CreatedOn , DATEDIFF('d',(Select CASE WHEN Activity.CreatedOn > qSWxSRLastUpdated.MaxOfCreatedOn THEN Activity.CreatedOn ELSE qSWxSRLastUpdated.MaxOfCreatedOn END), NOW()) AS MostRecentDate Now the

问题 I am building a query to search for records matching any number of fields in a table with 15+ columns. (All fields for which an input is given must match.) However, the original table was badly designed, in some cases having upwards of ten fields for the same thing. (With names such as Street_11.) I have separated the data into multiple tables such that Street_2 through Street_12 are now all labeled under Street_2 in a separate table, containing only that column and fileID , which is taken