Archive for the ‘SQL’ Category

Oracle tuning: Using Hints

Monday, June 20th, 2005

Every once in a while you will get a query that no matter what you try, it doesn't use the indices. This is typically because the cost-based optimizer decides that an approach that is slower has a total cost that is lower than using the index and making it faster.

To solve this, you would use a hint. You can find an article on how to do this on dbasupport. But the basics are: (more...)

Oracle tuning: Using explain plan

Monday, June 20th, 2005

In order to make queries run faster, you should try to have oracle explain to you how the query should be performed.

The whole explanation for oracle tuning can be found on the Oracle Tuning guide, but here are the basics. (more...)

MySQL: Create/Drop DB and user

Tuesday, April 5th, 2005

This tip contains a couple of MySQL scripts that allow me to create and drop a database and a user that will "own" said database.

(more...)