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  1. The != and +/- signs are joined together as an operator

    谭忠涛 <zhongtao.tan@seaboxdata.com> — 2025-03-19T01:23:33Z

    case:
select 1 !=-1;
select 1 !=+1;





Regards



谭忠涛&nbsp; &nbsp;数据研究院数据库事业部
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  2. Re: The != and +/- signs are joined together as an operator

    David G. Johnston <david.g.johnston@gmail.com> — 2025-03-19T14:07:17Z

    On Tuesday, March 18, 2025, 谭忠涛 <zhongtao.tan@seaboxdata.com> wrote:

> case:
> select 1 !=-1;
> select 1 !=+1;
>
>
Explain why you think it is a bug.  From what I see those are potentially
valid operator names that do not exist so “operator not found” is the
correct outcome.

David J.

  3. Re: The != and +/- signs are joined together as an operator

    Tom Lane <tgl@sss.pgh.pa.us> — 2025-03-19T14:34:39Z

    "David G. Johnston" <david.g.johnston@gmail.com> writes:
> On Tuesday, March 18, 2025, 谭忠涛 <zhongtao.tan@seaboxdata.com> wrote:
>> select 1 !=-1;
>> select 1 !=+1;

> Explain why you think it is a bug.  From what I see those are potentially
> valid operator names that do not exist so “operator not found” is the
> correct outcome.

Our rules for operator names are here:

https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-OPERATORS

			regards, tom lane