Building a "simple" Select

Question

Hi,
I know that the select I4m trying to make will be a piece of cake for the more experienced people in SQL and selects.
I have 2 tables one with (nr_emp , Name , phone) and another with (code , nr_emp , etc).
I want to get the rows from the first table that don4t have nr_emp on the second table.
I think it4s simple too but all my atempts on constructing a Select to do it have failed, this is the select that i figured out: SELECT emp.nr_empregado FROM empregado emp , (select l.nr_empregado from login l) log where emp.nr_empregado != log.nr_empregado
I know that it doesn4t work and understand why, but can4t find out another logic to make this work. Any ideas?

Answer 1

Hello,
Please start a new question, instead of adding to an existing thread.
Listed below is your SELECT and one I made.
-- Your SELECT
SELECT  Cod_Processo
    ,   Nome_Processo
FROM    PROCESSOS
WHERE   Cod_Processo NOT IN
            (   (   SELECT  A.Cod_Processo
                    FROM    AUTORIZACAO A
                        ,   PERFIL_EMPREGADO PE
                    WHERE   PE.Nr_Empregado = $Codemp
                    AND     A.Cod_Perfil = PE.Cod_Perfil
                OR
                (   SELECT  PS.Cod_Processo
                    FROM    PROCESSOS_SUBTRAIDOS ps
                    WHERE   PS.Nr_Empregado = $Codemp
                OR
                (   SELECT  PA.Cod_Processo
                    FROM    PROCESSOS_ADICIONADOS PA
                    WHERE   PA.Nr_Empregado = $Codemp
ORDER BY TO_NUMBER ( Cod_Processo ) ASC
=====================
You might try
=====================
SELECT  P.Cod_Processo
    ,   P.Nome_Processo
FROM    PROCESSOS   P
WHERE   NOT EXISTS
        (   SELECT  1
            FROM    AUTORIZACAO A
                ,   PERFIL_EMPREGADO PE
            WHERE   PE.Nr_Empregado = $Codemp
            AND     A.Cod_Perfil    = PE.Cod_Perfil
            AND     A.Cod_Processo  = P.Cod_Processo   -- Link to main SELECT
AND     NOT EXISTS
        (   SELECT  1
            FROM    PROCESSOS_SUBTRAIDOS ps
            WHERE   PS.Nr_Empregado = $Codemp
            AND     PS.Cod_Processo = P.Cod_Processo   -- Link to main SELECT
AND     NOT EXISTS
        (   SELECT  1
            FROM    PROCESSOS_ADICIONADOS PA
            WHERE   PA.Nr_Empregado = $Codemp
            AND     PA.Cod_Processo = P.Cod_Processo   -- Link to main SELECT
ORDER BY TO_NUMBER ( Cod_Processo ) ASCGood Luck,
Eric Kamradt