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* Possible to access value in RECORD without knowing column name?
@ 2007-05-02 19:17 Collin Peters <cadiolis@gmail.com>
2007-05-02 19:26 ` Re: Possible to access value in RECORD without knowing column name? Richard Albright <ralbright@insiderscore.com>
0 siblings, 1 reply; 2+ messages in thread
From: Collin Peters @ 2007-05-02 19:17 UTC (permalink / raw)
To: pgsql-sql
In plpgsl, if I have a RECORD variable that is populated via some
dynamic SQL, is it possible to access the columns in that RECORD
object without knowing the column names? I.e. Can I grab whatever
value is the 3rd column?
random_colname = 'foobar';
sql = 'SELECT col1, col2, ' || random_colname || ' FROM table';
FOR mviews IN EXECUTE sql LOOP
--possible to access 3rd column of mviews? something like mviews[3]?
END LOOP;
Regards,
Collin
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Possible to access value in RECORD without knowing column name?
2007-05-02 19:17 Possible to access value in RECORD without knowing column name? Collin Peters <cadiolis@gmail.com>
@ 2007-05-02 19:26 ` Richard Albright <ralbright@insiderscore.com>
0 siblings, 0 replies; 2+ messages in thread
From: Richard Albright @ 2007-05-02 19:26 UTC (permalink / raw)
To: Collin Peters <cadiolis@gmail.com>; +Cc: pgsql-sql
my_column = 'foo'
sql = 'select col1, col2, ' || my_column || ' as bar from mytable;
for myrecord in execute sql
loop
myvariable = myrecord.bar
end loop;
On Wed, 2007-05-02 at 12:17 -0700, Collin Peters wrote:
> In plpgsl, if I have a RECORD variable that is populated via some
> dynamic SQL, is it possible to access the columns in that RECORD
> object without knowing the column names? I.e. Can I grab whatever
> value is the 3rd column?
>
> random_colname = 'foobar';
> sql = 'SELECT col1, col2, ' || random_colname || ' FROM table';
>
> FOR mviews IN EXECUTE sql LOOP
> --possible to access 3rd column of mviews? something like mviews[3]?
> END LOOP;
>
> Regards,
> Collin
>
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--
Rick Albright
Senior Quantitative Analyst
Indie Research, LLC
254 Witherspoon Street
Princeton, NJ 08542
(609)497-1030
ralbright@insiderscore.com
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2007-05-02 19:17 Possible to access value in RECORD without knowing column name? Collin Peters <cadiolis@gmail.com>
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