Question

This SQL statement

SELECT `ip`, `when` FROM `metrics` WHERE `vidID` = '1' GROUP BY DATE('when')

returns one result, even though multiple are present in the table with different dates. I’ve tried using DATE_FORMAT as well. Am I doing something stupid?

When is a timestamp column with full timestamp, including hours, minutes and seconds. I’m trying to just group by results by day/month/year.

Answer 1

Looks like you’re grouping by the constant string 'when' instead of the field when.

Use this instead:

GROUP BY DATE(`when`)

Sounds like you want to count the IP addresses for a given date:

SELECT COUNT(`ip`) AddressCount, `when`
FROM `metrics` 
WHERE `vidID` = '1' 
GROUP BY DATE(`when`)