On 01/06/2014 07:42 AM, David Johnston wrote:
Adrian Klaver-3 wrote
In the real function I'm writing, the columns to be used in the string
being created are pulled from a configuration table, so their types
could be anything. So casting the quote_literal() calls is not really an
option here.
Any help would be appreciated.
Cast before the quote_literal?
Example:
EXECUTE 'SELECT min('||v_col||'::text) as min, max('||v_col||'::text) as
max FROM test_temp' INTO v_record;
Right idea if the loss of original type in the min/max query is acceptable
(which it should be). But the cast wants to be of the min/max RESULT not
the min/max INPUT.
SELECT min(' || v_col || ')::text AS min_text, max(' || v_col || ')::text AS
max_text FROM ...
Min/Max logic wants to be done by the rules for the original type, not
according to string collation rules.
Yes, that would be the way to do it.
David J.
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Adrian Klaver
adrian.klaver@xxxxxxxxx
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