Reading Time: 7 minutesThe SQL Server “Key Lookup” operation is something you may see when looking at the execution plan of a query. Maybe you’re trying to optimize the query to run a bit faster and noticing that a lookup operation is taking a LARGE amount of the query processing time. Or maybe Continue Reading
Don’t make this OUTER JOIN mistake!
Reading Time: 4 minutesThe OUTER JOIN operations, such as LEFT JOIN and RIGHT JOIN, are very important to know when it comes to querying Microsoft SQL Server databases. There is one important factoid you should know if you are using an OUTER JOIN in combination with the IS NULL predicate. Let’s create a Continue Reading