Re: Bug in parser?

On 31 May 2003, Gerhard Dieringer wrote:

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>                         POSTGRESQL BUG REPORT TEMPLATE
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> Your name		:	Gerhard Dieringer
> Your email address	:	Gerhard.Dieringer@nexgo.de
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> System Configuration
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>   Architecture (example: Intel Pentium)  	:Dual Intel Pentium II
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>   Operating System (example: Linux 2.0.26 ELF) 	: Linux 2.2.16
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>   PostgreSQL version (example: PostgreSQL-7.3.3):   PostgreSQL-7.3.3
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>   Compiler used (example:  gcc 2.95.2)		:   gcc-Version 3.3
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> Please enter a FULL description of your problem:
> ------------------------------------------------
> Inconsistent results when calling '+' operator with text arguemts
> The last 4 results (f.e. '1' + '2' -> 'c') are very strange.

'1'+'2' is pretty meaningless.  In the other cases you're giving a type
that has a meaningful + operator so it's trying to convert  the quoted
argument to an appropriate type for +.  In the '1'+'2' case it's
converting to "char" (single character) and adding those which seems
marginally reasonable to me (although I think that "char" is pretty
silly).

I'm not sure what you expected '1'+'2' to give though, concatenation is ||
and I can't think of something meaningful to do with it.