What is the SQL Server equivalent to Access NZ() function? Access SQL NZ([Event Timestamp]) SQL Server Equivalent COALESCE([Event Timestamp],0) ISNULL([Event Timestamp],0) * do not confuse this with the Access isnull() function.
Prefer compile time errors over run time errors
In VBA, there are several features that allow us to do things that may not be checked at the compile time. In particular, it is possible to write several late-bound expressions which means that it can potentially contain run-time errors. One common misconception about late-binding is that it’s a matter of adding a reference and…
Using Custom Functions in Calculated Controls
Custom functions work the same way as MS Access built-in functions such as DateAdd, DatePart and DSum, but are instead created ourselves as database developers. We do this by creating a public function with the VBA programming language and save it inside a global module within the database. Today I am going to explain how custom functions can be…
Module level variables
It is common to create a big wall of declaration in a module such as this: Private strCompanyName As String Private dteOrderDate As Date Private lngOrderID As Long Private objEmail As Object Private objOutlook As Object While the code will compile and work fine, the discoverability and naming of the module level variables does become…
Enable and Disable a Form Control using VBA
I was working on a design for an Order Management Database, and one of the tasks I dealt with involved dynamically Enabling or Disabling one of the form’s Command Buttons’ using VBA. This gave me the idea for the present Access tip. The command button was located on a Customer Details form which had an Orders…
Access UPDATE query to SQL Server
How do I convert an Access UPDATE query to SQL Server? Access SQL UPDATE Cars INNER JOIN UpdateList ON Cars.Parts = UpdateList.Parts SET Cars.Price = [Updatelist].[price] SQL Server UPDATE Cars SET Cars.Price = [Updatelist].[price] FROM Cars INNER JOIN UpdateList ON Cars.Parts = UpdateList.Parts
#LateBind Constant
In standard code, we make use of #LateBind conditional compilation constant, which is typically defined via project’s Conditional Compilation Argument in the dialog: NOTE: The dialog can be found via Tools → <project name> Properties, which is located below the Options menu item. The menu item caption will be different as it includes the project…
Access InStr() function to SQL Server equivalent
What is the SQL Server equivalent to Access InStr() function? TargetField: String expression being searched SearchValue: String expression being sought StartPosition: Starting position for each search (optional) Access SQL InStr(TargetField, SearchValue) InStr(StartPosition, TargetField, SearchValue) SQL Server CHARINDEX(SearchValue, TargetField) CHARINDEX(SearchValue, TargetField, StartPosition)
Using Microsoft Access Data in a Mail Merge
Suppose you have an Access Database containing the names and addresses of your customers. Every now and again you may want or need to send a standard letter to each customer who has opted in to such mailings. However, you are aware that these letters are going to look so much better, and work so…
Designing a lookup table with logic
It is very common for us to embed some kind of logic based on a lookup table or in some cases, a column of a table. Because we have application logic connected to it, the code are fragile and subject to changes as the requirements develops. We want to avoid this situation where we might…