Código SQL [-] SELECT SUM( SE.IMPORTE ) FROM SEGUROS SE INNER JOIN FINCAS FI ON SE.IDFINCA = FI.IDFINCA INNER JOIN OPERACIONES OP ON FI.IDOPERACION = OP.IDOPERACION AND OP.IDOPERACION = :OPER_ID
SELECT SUM( SE.IMPORTE ) FROM SEGUROS SE INNER JOIN FINCAS FI ON SE.IDFINCA = FI.IDFINCA INNER JOIN OPERACIONES OP ON FI.IDOPERACION = OP.IDOPERACION AND OP.IDOPERACION = :OPER_ID