From: | James Harper <james(dot)harper(at)bendigoit(dot)com(dot)au> |
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To: | Brent Wood <Brent(dot)Wood(at)niwa(dot)co(dot)nz> |
Cc: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: union of types in a different category |
Date: | 2014-02-22 23:16:58 |
Message-ID: | 6035A0D088A63A46850C3988ED045A4B6F3AFFA3@BITCOM1.int.sbss.com.au |
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Lists: | pgsql-general |
>
> I prefer the explicit approach used by Postgres - MYSQL is simpler, but I'd say
> simplistic in this area. While it can automate the cating of tpes/catories of
> variable, it doesn't always do it the way I want - so I need to be explicit
> anyway.
>
> In your second use case, which fails - do you want numerics cast to strings or
> vice versa? It can make difference, so to get what you want rather than
> otherwise, I prefer to be explicit. in either Postgres or MySQL.
>
Without anything explicit, I would want them cast to text (eg in the direction of the implicit cast for the types involved). The problem is that I don't necessarily have control of the queries - they were written for MSSQL.
James
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