Question

I have a database table that has a path to an uploaded image. Sometimes this image points to an external server, but sometimes it is a relative path pointing to the same server.

When creating the SQL query I need to do this check:

1. If the first 4 characters of the path are http then just return that
2. Otherwise prepend hard-coded URL string to the path

I’ve been struggling to make the IF check check and SUBSTRING to work.
Any ideas?

Answer 1

prefix string

select IF(LEFT(column,4) = "http", column, CONCAT("string", column)) FROM table

append string

select IF(LEFT(column,4) = "http", column, CONCAT(column, "string")) FROM table