Greetings!
I'm trying to build a query based on a "Action". The Action value comes from a SELECT query.

I have a hash which contains the database field names and there equivalent values (These values will be populated by a SELECT query).
I want to build a query from this hash based on the "Action" value.
For example if the "Action" is "Problem Submit", I'd like a build a query like

INSERT INTO Ticket_Data(Data_id, Prov_id, Provclientid) VALUES (Ticket
+_Data_seq.nextval, 'EECO::UTN:BPL', 'BPC::123');

[download]
All the other fields needs to be skipped if the Action is "Problem Submit"(other than Data_id, Prov_id, Provclientid)

I'm trying to achieve the same using the code below, but could not get the values while building the query.
The reason being, to skip some of the fields I need to traverse the hash using a foreach() loop, once done I've to
append the values outside the foreach() loop to the main query.

Could anyone throw some light about how to achieve the above said functionality.

$query = $dbh->prepare(qq{SELECT * from table_name});
...
my $data = $query->fetchrow_hashref;
...

%MAPPING = (
        
        'Data_id' => 'Ticket_Data_seq.nextval',
        'Action' => "Problem Submit",
        'Cust_Ticket_Number' => "",
        'Our_Ticket_Number' => "$data->{'TicketNumber'}",
        'msg_id' =>    "",
        'time_stamp'     =>    "",
        'Description' =>    "",
        'EL_Edesc' =>    "",
        'prov_id' =>    "EECO::UTN::BPL",
        'provclientid' => "BPC::123",
        'prov_client_org' =>    "",
        'prov_client_buz' =>    "",
        'prov_schema_type' =>    ""
        );
        

if ($action eq 'Problem Submit')        
  my $query = "INSERT INTO Ticket_Data (";

  for  $key ( keys %ORA_MAPPING ) {
     $value = $ORA_MAPPING{$key};
     next if $key eq "Data_id";
    $q.=" $key, ";

  }

  $query .= " ) VALUES ($ORA_MAPPING{$_} )";

} elsif ($action eq 'Update') {
...
}

[download]
!!@!!
May the force be with you!!

In reply to Dynamic query generation by chanakya

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