I ran into an issue the other day where I couldn’t set up some features in SQL Server 2008 because they ddon’t support the use of Rules or Defaults. Let me explain a little more about that. In older versions of SQL Server, you could decalre a “Rule” or “Default” just like you do with a Table Constraint today. You would then “bind” these rules or defaults to the tables you wanted them to apply to. Sure, there are advantages and disadvantages to this approach, but it certainly isn’t standard Data Definition Language (DDL), so they are deprecated and many features don’t work with them any more. Honestly, it’s been so long since I’ve seen them in use I had forgotten to even check for them. My suspicion is that this was a new database created with an older script. Nevertheless, the feature failed when it ran into one.
Immediately I thought that I had better build some logic into my process to try and catch those – but how? Lots of choices here, but since I was using PowerShell to do the rest of the work, I thought I would investigate how easy it would be just to do it there. And using the SQL Server 2008 provider, this could not be simpler. I won’t show all of the scrupt here, because I was testing for these as a condition and then bailing out of the script and sending a notification, but all it is using is the DIR command!
Here’s an example on my “UNIVAC” computer for the “pubs” database:
Find Rules using PowerShell:
And this one will look in all databases:
dir SQLSERVER:\SQL\UNIVAC\DEFAULT\Databases | select-object -property Name, Rules, Defaults
Awesome. Love me some PowerShell.
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