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Thread: Re: BUG #18774: Not the required output of the query used in the function(delete_from_table1) in postgresql9.4

Re: BUG #18774: Not the required output of the query used in the function(delete_from_table1) in postgresql9.4

From

Rajni Bobal

Date:

03 February, 08:37:25

Hello Sir,

Thanks for the reply,

as per the documentation, following query execute successfully :

EXECUTE 'SELECT count(*) FROM '    || quote_ident(tabname)    || ' WHERE inserted_by = $1 AND inserted <= $2'   INTO c   USING checked_user, checked_date;

HERE, $1 and $2 are strings and its values are substituted in the query. Please clarify, may be i am missing something.

Regards,

Rajni Bobal

On Thu, Jan 23, 2025 at 7:54 PM David G. Johnston <david.g.johnston@gmail.com> wrote:

On Thursday, January 23, 2025, Rajni Bobal <rajnibobal@gmail.com> wrote:
Hello SIr,
Please clarify about why $1 is not been replaced by 'colname' in delete_from_table2 function.

It has been replace with the string literal value ‘colname’, not a column reference identifier “colname”. You cannot use positional parameters to supply identifiers. Structure must be known at parse time.

David J.