Question

I’m looking to use both DISTINCT and COUNT in a MySQL query, something like this:

SELECT DISTINCT `data1` AS new_data, COUNT(new_data) FROM table_name WHERE `data2`='$data2' AND `data3` = '$data3'

The goal being to loop through the DISTINCT results and do something with both the result itself, as well as the COUNT for that result.

Unfortunately, I’m not too great with MySQL…

1. I’m not sure if it can be done this way
2. Is there any other approach that I could use to calculate this all directly in MySQL without multiple DB calls?

Answer 1

I assume you want to have a count per data1 where rows match your conditions. Right?
Group by data1 and you’re done:

SELECT `data1`, COUNT(*) 
FROM table_name 
WHERE `data2` = '$data2' AND `data3` = '$data3'
GROUP BY `data1`