Question

I wonder if is it possible to run mysql command which can select an alternative field if the first given field is empty, on the same table.

Example : I have table called “posts” which have “intro” and “content”. In the same statement I would like to select as a result “content” if “intro” is empty, but not having both in the result array.

Thanks in advance

Answer 1

You can use IF function:

SELECT IF(LENGTH(intro)>0, intro, content) 
FROM posts

Or you can test for NULL if you mean that empty is NULL