Re: Error: Operator does not exist: "char"=integer

From: Gregory Stark <stark(at)enterprisedb(dot)com>
To: aarni(at)kymi(dot)com
Cc: pgsql-general(at)postgresql(dot)org, novnov <novnovice(at)gmail(dot)com>
Subject: Re: Error: Operator does not exist: "char"=integer
Date: 2008-12-18 23:29:06
Message-ID: 87fxklkqpp.fsf@oxford.xeocode.com
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Aarni <aarni(at)kymi(dot)com> writes:

> "ERROR: operator does not exist: character varying = integer at character 286
> HINT: No operator matches the given name and argument type(s). You might need
> to add explicit type casts."
>
> Quick fix to sql statements eg.
>
> ... WHERE CAST (your_char AS INTEGER) = integer ...
> ... WHERE CAST (your_char AS INTEGER) IN (1,2,3,...)

Note that this is *not* what was happening in 8.2. There it was casting them
to text and doing a text comparison. In the case of integer and equality
they're probably equivalent. However < and > will behave quite differently.
That's why the casts disappeared -- you probably weren't running the queries
you thought you were running in 8.2 and previously.

--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
Get trained by Bruce Momjian - ask me about EnterpriseDB's PostgreSQL training!

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