Oracle Statement repeating itself 9 times!! I need suggestions - sql

Question

I got a script for oracle database that must have something wrong, the code runs okay, but the results are that, for each line of the result, are another 8 lines with the same result. Instead of showing just one line, It's showing 9
What could be wrong in the script below?
SELECT P.IDPESSOA AS CodigoCompanhia,
E.NOMEEMPRESA AS NomeCompanhia,
L.LACDEBCRE AS TipoOperacao,
L.TRGDTINCLUSAO AS DataLancamento,
P.PLNDATDIA AS DataContabilizacao,
L.PLACONTA AS ContaContabil,
C.PLANOME AS DescricaoContaContabil,
C.PLANATUREZA AS NaturezaContaContabil,
L.LACVALOR AS ValorContabil,
M.MOESIGLA AS Moeda,
L.LACHIST1||' '||L.LACHIST2||' '||L.LACHIST3||' '||L.LACHIST4||' '||L.LACHIST5 AS HistoricoLancamento,
C.PLAGRUPO AS ClasseConta,
L.IDUSUARIOINCLUSAO AS PreparerID,
NVL(PE.NOME, U.NOMEUSUARIO) AS NomeCompletoFuncionario,
CG.DESCRICAO AS CargoFuncionario,
TO_CHAR(PC.PERNOME)||'/'||TO_CHAR(P.PEREXERCICIO) AS PeriodoContabil,
TO_CHAR(P.PLNPLANIL)||'-'||TO_CHAR(L.LACNUMLAN)||'-'||LACDEBCRE AS NumeroDocumento,
C.PLASUBGR3 AS ContasCompensacaoTransitorias,
P.PLNPLANIL, L.LACNUMLAN, P.PLNCODIGO
FROM PLANILHA P, LANCAMENTO L, EMPRESAPROP E, PLANOCONTA C, PERIODO PC,
PARAMGLOBAL PG, MOEDA M, USUARIOSISTEMA U, PESSOA PE, FUNCIONARIO F, CARGO CG
WHERE P.PLNCODIGO = L.PLNCODIGO
AND P.PLNDATDIA >= TO_DATE('01/01/2013','DD/MM/YYYY')
AND P.PLNDATDIA <= TO_DATE('30/04/2013','DD/MM/YYYY')
AND P.PEREXERCICIO = PC.PEREXERCICIO
AND P.PERNUMERO = PC.PERNUMERO
AND P.IDPESSOA = E.IDPESSOA
AND P.IDPESSOA = PG.IDPESSOA
AND PG.MOEDACORRENTE = M.MOECODIGO
AND L.PLANO = C.PLANO
AND L.PLACONTA = C.PLACONTA
AND L.IDUSUARIOINCLUSAO = U.IDUSUARIO
AND U.IDUSUARIO = PE.IDPESSOA(+)
AND PE.IDPESSOA = F.IDPESSOA(+)
AND F.IDCARGO = CG.IDCARGO(+)
AND P.IDPESSOA = 1
ORDER BY P.IDPESSOA, P.PLNDATDIA, P.PLNPLANIL, L.LACNUMLAN;
thanks

Answer 1

Add the primary key of every table that's referenced in the select to your list of output columns. This seems very much like a 1:n relation on one of the tables; you can identify which it is by checking which PKs are different in each set of "equal" 9 rows.

Answer 2

You can also use 'group by' before 'order by' clause