re: Query/400 and dates

I'm cleaning up after a couple of days of getting behind. I don't think anyone
covered this yet.

> Query/400 can work with date fields.  But how is an easy way to
> do the following: QSYSVAL for the date format is  *MDY.  The date
> field BIRTHDT in the record is yymmdd.
> We want a report showing each person's age, in years.

It's complicated at best. The obvious thing to do would be to make
the birthdate field into a result field of type L by first

    BDYY      SUBSTR(BIRTHDT, 1, 2)
    BDMM      SUBSTR(BIRTHDT, 3, 2)
    BDDD      SUBSTR(BIRTHDT, 5, 2)
    BDL       DATE(BDMM||'/'||BDDD||'/'||BDYY)

then doing something like

    BDYEARS   YEARS(CURRENT - BDL)

which would work as long as nobody in the file was born before 1940.
Anyone older than that would screw up the plan.

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Me, I'd throw some RPG at the problem and do it that way. Build a
similar file and do the year figuring and put it into a field in
the output file. Since you know it's birthdates, and can thus assume
that the year is 19YY, which will hold you over until your Y2K
programs rebuilds the file. Which it will do in 9 months anyway,
right? <grin>



Peter H. Coffin
phcoffin@us.ibm.com
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