On 12/20/18 5:51 PM, Chuck Martin wrote:

Please reply to list also.
Ccing list.



On Thu, Dec 20, 2018 at 7:56 PM Adrian Klaver <adrian.kla...@aklaver.com <mailto:adrian.kla...@aklaver.com>> wrote:

    On 12/20/18 12:35 PM, Chuck Martin wrote:
     > I hope someone here can see something that eludes me. I've recently
     > moved a database from PostgreSQL 9.6 to 11, and there are a few
     > oddities. The following select statement returns zero rows when it
     > should return one. This is one of a small number of records that
    exist,
     > but are not returned by the query. When I include the main table,
    event,
     > and any one of the associated tables, the record is returned, but no
     > record is returned with the entire statement. All the primary keys
     > (_pkey) and foreign keys (_fkey) are integers. The field I
    suspect as
     > the possible culprit, event.InsBy, is a character column I'm
    converting
     > to do a lookup on a primary key (integer): event.InsBy::int =
     > usr.Usr_pkey. Maybe PG 11 doesn't recognize the same syntax for
    cast as
     > PG 9.6? Or maybe I'm overlooking something else basic. Thanks for
    reading!

    So if in the WHERE you leave out the:

    AND event.InsBy::int = usr.Usr_pkey

    and in the SELECT you add:

    event.InsBy, event.InsBy::int AS InsByInt

    what do you see?


I get 91 copies of the record. One for each record in the usr table.

But do the event.InsBy, event.InsBy::int AS InsByInt values match each other?

Just had a thought, what if you join just the event and usr tables on:

event.InsBy::int = usr.Usr_pkey

Trying to determine whether your suspected culprit really is the culprit.


--
Adrian Klaver
adrian.kla...@aklaver.com

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