The Cost Of Compression

Erin Stellato looks at the COMPRESS function:

While this data is interesting, I’m more curious about how compression affects my everyday SELECT queries. I have a set of three stored procedures that each have one SELECT query, so that each index is used. I created these procedures for each table, and then wrote a script to pull values for first and last names to use for testing. Here is the script to create the procedures.

Once we have the stored procedures created, we can run the script below to call them. Kick this off and then wait a couple minutes…

To me, the COMPRESS function is most useful for compressing information you tend not to search through but need to keep the in the database, like HTML markup or long descriptions.

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