Re: operator is only a shell - Error

On 3/18/24 00:05, Rajesh S wrote:
> Thank you for your response.  Actually, I was trying to address the 
> following query.
> 
> select LIEN_AC_NO from deposit_lien where deposit_no='0002114029832' and 
> deposit_sub_no='1' and unlien_dt is null and unlien_remarks is null;
> 
> In the above query "deposit_sub_no" column is "numeric" type and passing 
> '1' (as varchar).  To address this I'd created the function and operator 
> as I'd mentioned in the earlier mail.  Even the following query throws 
> error after creating the function and operator.
> 
> select * from deposit_lien where deposit_no='0002114029832';
> 
> ERROR: operator is only a shell: character varying = numeric LINE 1: 
> select * from deposit_lien where deposit_no='0002114029832' ^ SQL state: 
> 42883 Character: 44
> 
> In the above query "deposit_no" column is having "varchar" data type.  
> But before creating the function and operator it was working fine.  
> Tried dropping the same, even though the same error.  How to proceed now?

Not clear to me what the problem is you are trying to solve?

On a stock Postgres install:

select 1::numeric = '1';
  ?column?
----------
  t

select '0002114029832'::varchar = '0002114029832';
  ?column?
----------
  t


> 
> 
> Thanks,
> 
> Rajesh S
> 
> On 15-03-2024 19:10, Greg Sabino Mullane wrote:
>> On Fri, Mar 15, 2024 at 6:26 AM Rajesh S <rajesh.s@fincuro.com> wrote:
>>
>>     I wanted to implement a new "=" (equal) operator with LEFTARG as
>>     numeric and RIGHTARG as varchar.  But after creating the function
>>     and operator, psql shows the error "operator is only a shell:
>>     character varying = numeric
>>
>> Your operator has numeric on the left and varchar on the right. But 
>> your query is doing numeric on the RIGHT. Probably want to make a 
>> matching one to cover both cases.
>>
>> Cheers,
>> Greg
>>

-- 
Adrian Klaver
adrian.klaver@aklaver.com