Postgres Pro
Downloads
Home   >   mailing lists

Re: Add hint for function named "is" - Mailing list pgsql-hackers

From Greg Stark
Subject Re: Add hint for function named "is"
Date
Msg-id CAM-w4HPQLd6PBtL7rV0VbaUE6968Qxdh1z0e=tQEJemriF4xfQ@mail.gmail.com
Whole thread Raw
In response to Re: Add hint for function named "is"  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Add hint for function named "is"  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Tree view 
On Fri, Aug 12, 2016 at 7:40 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> pointing out that "SELECT 42 ISNULL" is now ambiguous.  Since ISNULL
> is nonstandard, maybe dropping support for it would be feasible.

Isn't ISNULL one of the lexical tricks we used to effectively give
bison two token lookahead?

-- 
greg

pgsql-hackers by date:

Previous
From: Peter Geoghegan
Date:
Subject: Is tuplesort_heap_siftup() a misnomer?
Next
From: Greg Stark
Date:
Subject: Re: Btree Index on PostgreSQL and Wiredtiger (MongoDB3.2)