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  3. June 2016

Re: An easy (I think) SQL question

On 6/28/16, 1:50 PM, Bill Howie wrote:
I have what I think is a fairly simple SQL question but it's baffling me.
I have a field in a file that is a date (field is in packed format). The
date in the field looks like this: 1160628. The need is to only grab
records from this file that go back 3 months from the first day of the
current month, so in this case I'd only want records with a date greater
than 1160301. This also needs to work if when subtracting the 3 months I
had to go across multiple years. I know I can do a formula something like
this:

(CURRENT_DATE - (DAY(CURRENT_DATE)-1) DAYS - 3 MONTH)


But I'm not sure how to use the packed numeric date field I have to get
there. Any thoughts would be greatly appreciated. Thanks!


Well, if you're doing this from a HLL, and the HLL can handle actual date fields, then presumably it provides some way to coerce/cast/explicitly convert your numeric date to an actual date value.

--
JHHL


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