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.
If I have a table with columns: item_id, user_id, vote, date what columns should I put the index on considering:
I’ll need to fetch votes by date for time ranges and
there cannot be more than one vote for each item by a user.
Should the index be sorted ASC or DESC if I want to fetch dates that are more recent?
PRIMARY:item_id,user_id
INDEX: date
Sort DESC for latest first
Note: I assume you are storing date as UNIX TIMESTAMP (From your question title Timestamp Indexing)