I oftenreceive questions related to debugging codeusing SSMS.Based on these questions, Ihave written a lot of blog posts in the past, howeverI was recently asked the question:
How can I debug a DML trigger inSSMS?
I realized that while I hadencountered the same question and researched it inmyinitial days (when I worked on SQL Server 2000), I had never written aboutit. So, here goes.
In order to demonstrate how to debug atrigger,all we need to do is debug the statement thatinitiates the trigger.
For this demonstration, I willfire an update on the [Sales].[SalesOrderHeader] table of the AdventureWorks database. USE AdventureWorks2012; GO UPDATE soh SET soh.SubTotal += 2 FROM Sales.SalesOrderHeader AS soh WHERE soh.SalesOrderNumber = 'SO43697';When we debug this query (using F10), the SSMS debugger launches and we can step through the code using the same key combinations as we have in Visual Studio.
Image may be NSFW.
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Debugging T-SQL script using SSMS
Executing the update shouldfire the DML trigger [uSalesOrderHeader] whichcan be debugged like any other T-SQL code by stepping into the trigger (press F11 when executing the update).Image may be NSFW.
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Stepping into a DML trigger during a SSMS T-SQL Debugging session
That’s it. Debugging a trigger is no different than debugging a stored procedure or any other T-SQL script.
In case you would like to learn more about debugging in SSMS, please do refer my previous posts (linksbelow). If there is anything specific that you would like to know more about, do drop in a line.
Further Reading T-SQL Debugger Underappreciated Features of Microsoft SQL Server [Blog Link] Enabling T-SQL Debugger in SQL Server Management Studio (SSMS) [Blog Link] SSMS Tutorial Part 03 The T-SQL Debugger (L200) [Blog Link] T-SQL Debugging Connection Errors & Firewall settings [Blog Link] T-SQL Debugging SSMS errors MSDBG2.DLL [Blog Link] Setting, Labeling, Using & Searching Conditional Breakpoints [Blog Link] Export/Import Breakpoints [Blog Link] Using the “When Hit, Do Something” breakpoint configuration [Blog Link] Using Data-Tips [Blog Link] Editing, Exporting and Importing Data Tips [Blog Link]Until we meet next time,
Be courteous. Drive responsibly.