NOT and NULL do not create a complete two-way classification. State whether missing values belong in a filter or a separate reporting category.
Writing a Good Technical Blog Post
A technical blog post works when it solves one problem with tested code, clear assumptions, a readable result, and honest limits.
SQL SERVER – Find Table in Every Database of SQL Server – Part 2
Part 2 of how to find a table in every database of SQL Server: this stored procedure loops through sys.databases and reads the Information_Schema view.
SQL SERVER – Find Table in Every Database of SQL Server
sys.tables only searches one database. My quick stored procedure finds a table in every database on the server and returns database, schema and table name.
What Is an Index in SQL Server?
An index in SQL Server took one query from 33,517 reads to 66 on the same table. What clustered and nonclustered really mean, why every index is paid for on the way in, and how to find the ones nobody uses.
CHARINDEX Start Position: Find the Second Delimiter
CHARINDEX start position finds the next delimiter. Guard a missing first match, preserve NULL, and extract empty fields without negative lengths.
SQL SERVER – Optimization Rules of Thumb – Best Practices – Reader’s Article
Reader Praveen Barath adds his own query optimization tips to my rules of thumb: tune only working code, write repeated statements identically and more.