Tom Lane wrote:
Steve Clark <scl...@netwolves.com> writes:
I am getting the following error after upgrading from 7.4.6 to 8.3.6
and can't figure out what is wrong. Any help would be greatly appreciated.
2009-04-02 10:45:10 EDT:srm2api:ERROR:  column "event_ref_log_no" is of type 
integer but expression is of type text at character 146

I don't know ecpg very well, but if it doesn't provide any information
about parameter datatypes then the backend would resolve this:

        case  when  $7  > 0 then  $8  else null end

as producing a result of type "text".  7.4 would have allowed that to be
cast to int silently, but 8.3 won't (and the runtime cast involved
would've been expensive anyway).  I suggest sticking a cast directly
on the ambiguous parameter, ie

                        case    when :h_event_ref_log_no > 0
                                        then :h_event_ref_log_no :: integer
                    else null end,

(You needn't cast the null, since the type attached to the other case
arm is a sufficient cue.)

                        regards, tom lane

Thanks Tom,
that fixed the problem. I wasn't thinking about what the back end
was seeing, only that it was defined in my pgc program as an int.

Regards,
Steve

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