my $sql = "SELECTdx.dependent_xref_id,x1.accessionasdependent,dx.master_xref_id,x2.accessionasmasterFROMdependent_xrefdx,xrefx1,xrefx2WHEREx1.xref_id=dx.dependent_xref_idANDx2.xref_id=dx.master_xref_idANDx2.source_id=?ANDx1.source_id=?ANDx1.species_id=?ANDx2.species_id=?";
$count=count_rows($to_ga,"SELECT COUNT(*) FROM gene g, xref x, external_db e WHERE g.display_xref_id=x.xref_id AND x.external_db_id=e.external_db_id AND e.db_name IN ('RefSeq_dna_predicted', 'RefSeq_peptide_predicted')");