Re: Referencing Cursor/Row/Record Fields in PL/PgSQL

2009/2/11 Lee Hughes <lee(at)hughesys(dot)com>:
> I got it to work in plpgsql through the use of pg_attribute and a temporary
> table with known field names like "field0", "field1", etc. Works very nicely
> and performance seems fine so far.
>

you don't need temp. table. If you know fix sets of columns.
Attentions. These columns should have same types.

regards
Pavel S.

> Thanks for your help.
>
> Lee
>
> On Tue, Feb 10, 2009 at 8:21 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
> wrote:
>>
>> Hello
>>
>> 2009/2/11 Lee Hughes <lee(at)hughesys(dot)com>:
>> > I thought that's what EXECUTE was for in plpgsql -- isn't there a way to
>> > extract the value of a field in a row/record variable by building a
>> > SELECT
>> > string and passing it to EXECUTE?
>> >
>>
>> not in plpgsql. Try, plperl or some synamic PL language, please
>>
>> regards
>> Pavel Stehule
>>
>> > On Tue, Feb 10, 2009 at 1:22 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> >>
>> >> Lee Hughes <lee(at)hughesys(dot)com> writes:
>> >> > Trying to figure out how to reference a field in a cursor result, or
>> >> > in
>> >> > a
>> >> > row/record variable that I've FETCHed the cursor into, where the
>> >> > target
>> >> > field name is in a variable or parameter. I think I'm just missing
>> >> > the
>> >> > dereferencing syntax.
>> >>
>> >> There isn't any --- plpgsql doesn't deal in accesses to unknown fields
>> >> (mainly because it can't know their type, and it's a strongly typed
>> >> language). Consider plperl or plpython or pl-anything-but-pgsql.
>> >>
>> >> regards, tom lane
>> >
>> >
>> >
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