I think so implementation of simple expression evaluation should not be hard
Indeed it is not hard, it is rather a matter of deciding what it should do, and the syntax to do it.
- really just - we can expect so any variable will be replaced by const in expression Num (<|>|=|<=|>=) Num
<> and != would seem handy as well.
Text (<|>|=|<=|>=) Text
What would be the use case for handling TEXT?
not Bool, Bool (or|and) Bool
Aka logical expressions.
and special operator "defined"
I'm still not buying this suggestion at all because it does not look like SQL and I think that client-side expressions should be a simple subset of SQL expressions, which a "defined" operators is definitely not.
Hmmm. I'm not sure I get it. The penalty I see is that it adds a dummy variable which must be given a sensible name, and for very short expressions this is not a win. But this is a minor point.
I know so it is not ideal - but the language with commands "\if", "\else" ... is not ideal language.
Sure. -- Fabien. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
