On Monday 16 February 2004 15:10, you wrote:
>
> Any idea on how to find the 3 rd Wednesday of any given month.
SELECT
1-(to_char(date_trunc('month', now()::timestamp),'D'))::INT2 + 7*3-3
replace now with any date and you'll the the day number of a third Wed in that
month.
7 is a constant (factor 3 is a desired week number)
-3 is number of days to step back from sunday to a desired day of week
(-3 stands for Wed)
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
