Thread

1. RE: [HACKERS] Just another question

   Michael Meskes <meskes@topsystem.de> — 1998-04-23T12:14:12Z

   But scan.l returns Op.
   
   Michael
   
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   > -----Original Message-----
   > From:	Thomas G. Lockhart [SMTP:lockhart@alumni.caltech.edu]
   > Sent:	Thursday, April 23, 1998 2:07 PM
   > To:	Michael Meskes
   > Cc:	PostgreSQL Hacker
   > Subject:	Re: [HACKERS] Just another question
   > 
   > > I just noticed that there is an operator '=:'. What is it used for?
   > 
   > tgl=> select * from pg_operator where oprname = '=:';
   > ...
   > (0 rows)
   > 
   > ?? I don't see it here.
   > 
   >                       - Tom
   
   

2. Re: [HACKERS] Just another question

   Thomas Lockhart <lockhart@alumni.caltech.edu> — 1998-04-23T12:56:22Z

   > > > I just noticed that there is an operator '=:'. What is it used 
   > > > for?
   > > ?? I don't see it here.
   > But scan.l returns Op.
   
   Oh, it is an _allowed_ operator symbol combination, if someone were to
   define an operator using it. But it isn't pre-defined anywhere, is it? 
   
   And, it should be OK to require spaces to help delimit your embedded
   stuff; that is, "=:" is interpreted as a possible operator, while "= :"
   (with space) is "equals embedded variable"...
   
   I'd hate to keep removing single characters from the allowed operator
   character set when we get syntax conflicts like this. We'll end up with
   only the SQL92-allowed operator symbols before long :)
   
                         - Tom