A reader moved and renamed database files and got error 5173: one or more files do not match the primary file of the database. I explain what went wrong.
Why SELECT 28F3 Returns 28: Float Literals and Hidden Aliases
Explain float literals, why SELECT 28F3 creates an alias, how 28E3 uses scientific notation, and why explicit AS prevents confusion.
SQL SERVER – FIX: ERROR : Msg 3136, Level 16, State 1 – This differential backup cannot be restored because the database has not been restored to the correct earlier state
Fix SQL Server error 3136 by checking the differential base, backup history and restore sequence. Test the matching backups in a separate database.
SQL SERVER – Performance Counter Missing: How to Get Them Back?
A friend opened PerfMon and found every SQL Server performance counter missing for his instance. Here is how we got them back.





