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

From Rajni Bobal
Subject Re: BUG #18774: Not the required output of the query used in the function(delete_from_table1) in postgresql9.4
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Msg-id CA+UiKXZ1tYpE5Nm5bd_vP2pQ9j3RBDXYkU0cZCPeuqGaQV02pA@mail.gmail.com
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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Please clarify about why $1 is not been replaced by 'colname' in delete_from_table2 function.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.

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