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Re: [HACKERS] Possible bug in parsing

From: Hannu Krosing <hannu(at)trust(dot)ee>
To: "Thomas G(dot) Lockhart" <lockhart(at)alumni(dot)caltech(dot)edu>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: [HACKERS] Possible bug in parsing
Date: 1998-03-18 07:31:40
Message-ID: (view raw or whole thread)
Lists: pgsql-hackers

Thomas G. Lockhart wrote:

> > I understand the 'there is more than one operator' errors, but
> > what is so different between operators + and || ?
> ?? They are different operators, that's why. The "+" is addition, and
> the "||" is defined in SQL92 to be string concatenation.

Yes I know that, but why are they so different that I can have

  ARG1 op ARG2 op ARG3

with + but not with ||


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