SDU Tools: Retrust Foreign Keys and Check Constraints in SQL Server

SDU Tools: Retrust Foreign Keys and Check Constraints in SQL Server

While doing my consulting work, I often come across Foreign Keys and Check Constraints that are not trusted. What this means is that either:

  • They were created without checking existing data
  • They were disabled for a period and re-enabled without re-checking the existing data

I like to see this fixed whenever possible. To make that easy, in our free SDU Tools for developers and DBAs, we added two stored procedures to help: RetrustForeignKeys and RetrustCheckConstraints.

Both procedures take three parameters:

  • @DatabaseName - the database to work in
  • @SchemasToList - a comma-delimited list of the schemas to include or the word ALL (which is the default)
  • @TablesToList - a comma-delimited list of the tables to include or the word ALL (which is the default)

You can see these two procedures in action in this video:

YouTube Video

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2019-05-01