Does the order of columns in a query matter?

Question

When selecting columns from a MySQL table, is performance affected by the order that you select the columns as compared to their order in the table (not considering indexes that

Answer 1

In practice, I suspect it might.

With a decent query optimiser: it shouldn't.

You can only tell for your cases by measuring. And the measurements will likely change as the distribution of data changes in the database.

with regards

Wazzy