Category: TSQL

The transaction log for database ‘MyDB’ is full due to ‘LOG_BACKUP’

Your transaction log is full. Both Microsoft, and about 100 articles and blogs have covered this topic, but let’s take a quick look anyway. Because, you know, it comes up all the time.

Fix WHERE clause AND/OR/NOT confusion with truth tables

The ANDs, ORs, and NOTs in a T-SQL query’s WHERE clause can get confusing, especially if you’re thinking of it like plain-Jane algebra. Here I show you how to figure out exactly what a query is doing, using truth tables!