Question

I am exporting a SELECT result to CSV via INTO OUTFILE. I have a series of simple SQL string functions I use to format the data. For instance: CONCAT('$',FORMAT(property.price,2)). I would like to otherwise return an empty string if the value is NULL, but I am unsure how to do both at the same time.

Also I am wondering the easiest way to take a TinyInt value of 0 or 1 and return “yes” or “no”.

Answer 1

For tinyint you can use IF operator

select if(tinyint_value,'yes','no')

for first part you also can use if operator

select if(property.price is not null, CONCAT('$',FORMAT(property.price,2)),'')