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

From David E. Wheeler
Subject Re: Add hint for function named "is"
Date
Msg-id 57F2278E-CD67-4287-B323-8EF2984551A7@justatheory.com
Whole thread Raw
In response to Add hint for function named "is"  (Jim Nasby <Jim.Nasby@BlueTreble.com>)
Responses Re: Add hint for function named "is"  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On Aug 11, 2016, at 2:11 PM, Jim Nasby <Jim.Nasby@BlueTreble.com> wrote:

> CREATE FUNCTION pg_temp.is() RETURNS text LANGUAGE sql AS $$SELECT 'x'::text$$;
> SELECT 'x'||is();
> ERROR:  syntax error at or near "("
> LINE 1: SELECT 'x'||is();
>
> I was finally able to figure out this was because "is" needs to be quoted; is there a way this could be hinted?
>
> FWIW, the real-world case here comes from using pgTap, which has an is() function. I've used that countless times by
itselfwithout quoting, so it never occurred to me that the syntax error was due to lack of quotes. 

Why does it need quotation marks in this case?

D

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