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SQL Group by months, return all months even if zero

SQL Group by months, return all months even if zero

2004-03-22       - By Harald Fuchs

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Reply:     1     2  

In article <01e901c40fe0$e581da80$c90010ac@(protected) >,
"Terence " <terence@(protected) > writes:

> Hi,
> Is there a short way to return the results from a query grouped by months
> and return zero if no results found: eg:

> SELECT count(*) as total, monthname(col)
> FROM table
> GROUP BY monthname(col)

> To return:

> 5 - Jan
> 0 - Feb
> 3 - Mar
> 0 - Apr

> etc.

> Just wondering. I know the long way to do it, by quering each month one by
> one...

Create an auxiliary table containing either the month names or the
numbers 1..12 and LEFT JOIN your table to it.


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