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.
Does anybody know what the performance of using substring in MySQL is like? I have some insert and update calls where I have to truncate all the fields (up to around 15) using substring statements. These will get call pretty regularly so I’m a little worried about performance.
Intensive string handling in SQL generally performs relatively poorly (it’s not what SQL was designed for).
But you should first profile to make sure you actually have a bottleneck.
[If you were using MS SQL Server, then any complex string handling (like regular expression matching) should probably use a CLR stored procedure.]