Re: insert from a select

On Wednesday 24 November 2010 4:07:43 pm John Fabiani wrote:
> Hi,
> I have a strange issue that is mostly likely me not understanding
> something. I always thought that an insert statement would accept any
> select statement. I'm guessing I am wrong.
>
> I have created a temporary table ("tempclass") that is exact match to an
> existing table ('esclass').
>
> When I attempt to do the following
> insert into tempclass Select cl.pkid, cl.depart, cl.sessionid, cl.instrid,
> cl.classseq,(select facility from esloc where esloc.pkid = cl.locationid)
> as facility, cl.schedule from esclass cl where cl.pkid in (14507,14508)
>
> I get the following error:
>
> ERROR: column "schedule" is of type date but expression is of type
> character varying
> LINE 1: ... cl.depart, cl.sessionid, cl.instrid, cl.classseq,(select fa...
> ^
> HINT: You will need to rewrite or cast the expression.
>
> The error makes no sense to me. But most important if I just run the
> select statement it works perfectly.
>
> Like I said the table "tempclass" (a temporary) is a dup of table "esclass"
> so none of it makes sense. Of course I did say I'm missing something.
>
> So why isn't the select statement working with the insert?

Looks like an off by one situation. See error detail below:

LINE 1: ... cl.depart, cl.sessionid, cl.instrid, cl.classseq,(select fa..
^

Looks like the result of the 'select facility.." is being inserted into the
schedule column.

>
> Johnf

--
Adrian Klaver
adrian(dot)klaver(at)gmail(dot)com