Add-Equals operator

May 24, 2016 Andy 9

Shortcuts & tips from an Impatient DBA This series of short posts will demonstrate some lesser-known features, keyboard shortcuts, and other tips that make my day as a DBA more productive. None of these are groundbreaking super-secret features–they are the little things that I do … [Read More]

How to shrink a database in 4 easy steps

April 28, 2016 Andy 9

It’s a really common question: “How do I shrink my database?” Luckily, there’s also a really common answer: “Don’t.” …but what if you really have to? Perhaps you just implemented data compression, and have 60% free space in your database. Perhaps you just deleted a … [Read More]

CONVERT() to float using scientific notation

April 20, 2016 Andy 2

Someone posted to #sqlhelp on Twitter, asking the following: “Wondered if anyone could enlighten me as to why ISNUMERIC(‘7d8’) returns 1?” Sure enough, SELECT ISNUMERIC(‘7d8′) returns a 1. WTF? d isn’t numeric! OK, sure, if you say “seven-dee-eight” out loud it sounds like a number, but “d” is a … [Read More]

No Picture

Decoding sql_handle

February 29, 2016 Andy 0

If you’ve ever looked at sys.sysprocesses or sys.dm_exec_requests (or a number of other DMVs), you’ve noticed there is a column called “sql_handle” that contains some binary gobbledygook. Books Online gives the (un)helpful definition as “Hash map of the SQL text of the request.” sp_WhoIsActive In … [Read More]

No Picture

sp_executesql with output parameters

January 22, 2015 Andy 2

One of my coworkers asked me about output parameters from dynamic SQL today. I pointed him at sp_executesql, which allows for passing parameters into or out of dynamic SQL. The syntax can be confusing at first blush (especially for a new DBA or developer), but … [Read More]