Re: libpq PGHOST

Tom Lane writes:

> I don't see any clear statement in SQL92 that <delimited identifiers>
> can't have zero length, so I'm not convinced there's anything wrong here.

Hmm, I do:

<delimited identifier> ::=
<double quote> <delimited identifier body> <double quote>

<delimited identifier body> ::= <delimited identifier part>...

<delimited identifier part> ::=
<nondoublequote character>
| <doublequote symbol>

As opposed to, say, an empty character string literal:

<character string literal> ::=
[ <introducer><character set specification> ]
<quote> [ <character representation>... ] <quote>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ { <separator>... <quote> [ <character representation>... ] <quote> }... ]

--
Peter Eisentraut peter_e(at)gmx(dot)net http://yi.org/peter-e/