On Thu, Sep 11, 2014 at 2:47 AM, Fabien COELHO <coe...@cri.ensmp.fr> wrote:
> Ok. I do agree that an expression syntax would be great!
> However, that would not diminish nor change much the amount and kind of code
> necessary to add an operator or a function

That's not really true.  You can't really add abs(x) or hash(x) right
now because the current code only supports this syntax:

\set varname operand1 [ operator operand2 ]

There's no way to add support for a unary operator with that syntax.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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