Eu tenho duas tabelas, uma chamada
ALUNO e outra chamada
CLASSES, e eu preciso selecionar todos os alunos que sejam do sexo masculino e que pertençam a mesma classe de um aluno que tem um RGM específico.
As tabelas são :
NR_RGM NM_NOME NM_PAI NM_MAE DT_NASCIMENTO ID_SEXO
CD_CLASSE NR_ANOLETIVO CD_ESCOLA CD_GRAU NR_SERIE TURMA CD_PERIODO
Como eu poderia fazer isto ?
Por exemplo, para selecionar alunos do mesmo sexo do aluno de um RGM específico seria o seguinte :
SELECT * FROM ALUNO WHERE id_sexo = (SELECT id_sexo FROM aluno WHERE nr_rgm = '12150');
Mas como eu poderia fazer isto com duas colunas diferentes de duas tabelas diferentes ?
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