Avatar of Robert Granlund
Robert Granlund
Flag for United States of America asked on

MySQL Index's

MySQL Database.  How many INDEX's should a table have?  What indexs should they be? Primary, Foreign?  What is the best setup?
DatabasesMySQL Server

Avatar of undefined
Last Comment
Chris Stanyon

8/22/2022 - Mon
slightwv (䄆 Netminder)

>>How many INDEX's should a table have?

As many as it needs.  Indexes are based on usage.  You need to look at how the applications use the data and created indexes to benefit the queries.

OVER INDEXING is almost just as bad as under indexing.

>>What indexs should they be? Primary, Foreign?

A table can only have one primary key.  Foreign keys are based on the tables relationships so as many as you need.

>>What is the best setup?

It is based on the applications
ASKER CERTIFIED SOLUTION
Chris Stanyon

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.
rwheeler23