On 23 May 2014 15:40, Tom Lane <
tgl@sss.pgh.pa.us> wrote:
> A different concern is that this patch adds not one but two new unreserved
> keywords, ie SKIP and LOCKED. That bloats our parser tables, which are
> too darn large already, and it has a nonzero compatibility cost (since
> we only allow AS-less column aliases when they are no keyword at all).
> If we're pulling syntax out of the air it'd be nice if we could avoid
> adding new keywords to the grammar.
How about some of these combinations of existing words:
EXCLUDE LOCK
NOWAIT EXCLUDE
NOWAIT NEXT
NOWAIT FOLLOWING
NOWAIT DISCARD
Of those I think I prefer NOWAIT EXCLUDE (perhaps with NOWAIT ABORT as a long version of the existing NOWAIT behaviour for contrast).
Or adding just one new keyword:
NOWAIT SKIP
SKIP LOCK
Regards,
Thomas Munro
