SQL: Get count of rows returned from a left join

Posted by Rogue Coder on Stack Overflow See other posts from Stack Overflow or by Rogue Coder
Published on 2011-02-14T15:19:01Z Indexed on 2011/02/14 15:25 UTC
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joins

I have two tables, one called calendars and one called events. There can be multiple calendars, and multiple events in a calendar. I want to select every calendar, also getting the number of events in the calendar.

Right now I have :

SELECT C.*, COUNT(*) AS events FROM `calendars` AS C 
    LEFT JOIN `events` E ON C.ID=E.calendar 
    GROUP BY C.ID

But that doesn't work. Items with no events still return 1. Any ideas?

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