Are there rules of thumb for developers when to use join instead of subquery or are they the same.
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.
Are there rules of thumb for developers when to use join instead of subquery or are they the same.
Depends on RDBMS. You should compare execution plans for both queries.
In my experience with Oracle 10 and 11, execution plans are always the same.