On 7/31/17 16:13, Markus Sintonen wrote:
> This patch has no know backward compatibility issues with the existing
> /LISTEN///UNLISTEN/ features. This is because patch extends the existing
> syntax by accepting quoted strings which define the patterns as opposed
> to the existing SQL literals.
I don't see that in the patch. Your patch changes the syntax LISTEN
ColId to mean a regular expression.
Even then, having LISTEN "foo" and LISTEN 'foo' mean different things
would probably be confusing.
I would think about specifying an operator somewhere in the syntax, like
you have with LISTEN SIMILAR TO. It would even be nice if a
non-built-in operator could be used for matching names.
Documentation is missing in the patch.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services