Having multiple indices for an SQL table, is there a way to know what index will be used automatically when using a specific query?
EDIT: I wanted the question to be general, but I mostly use MySQL, PostgreSQL and SQLite
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Having multiple indices for an SQL table, is there a way to know what index will be used automatically when using a specific query?
EDIT: I wanted the question to be general, but I mostly use MySQL, PostgreSQL and SQLite
Use the EXPLAIN PLAN statement to see what the dbms will do with your query.