Question

I’m trying to highlight the days on my jQuery datepicker calendar which are associated with an event. In my database I have many events with a date field. So if January is selected on the datepicker, I want to check the database table to see if:

January 1st: Is there an event (true/false)
January 2nd: Is there an event (true/false)
January 3rd: Is there an event (true/false)
… and so on.

I guess I could just create a loop to create 31 queries to do the job. Is there’s more efficient way?

Answer 1

SELECT datefield, bool_field
FROM table
WHERE (whatever)
GROUP BY EXTRACT (DAY FROM datefield)

See the documentation for EXTRACT for other possibilities (like day of week).