How long should an SQL query take?

Why is SQL query taking so long?

There are a number of things that may cause a query to take longer time to execute: Inefficient query - Use non-indexed columns while lookup or joining, thus MySQL takes longer time to match the condition. Table lock - The table is locked, by global lock or explicit table lock when the query is trying to access it.

How long can a SQL query be?

1 Answer. Show activity on this post. I never encountered a problem of SQL query being too long in terms of number of characters, but there is a maximum number of tables a query can reference (256) and I hit this limitation a few times.

How long should a MySQL query take?

A query can take up to one hour if it crunches extremely large amount of data once every 6 months in a system where only it is running. It won't be a problem. Another query can take 100ms only but it's on a web server and 1000 persons are connecting simultaneously!

How much time a query takes in SQL Server?

Using Client Statistics1Go to Menu >> Query >> Select Include client Statistics.2Execute your query.3In the results panel, you can see a new tab Client Statistics.4Go to the Client Statistics tab to see the execution time.Getting accurate execution time in SQL Server SSMS | My Tec Bits