Oracle crea la tabla de tabla Generada automáticamente Clave primaria
-- For oracle 12c or later
-- auto inc
create table t1 (
c1 NUMBER GENERATED by default on null as IDENTITY,
c2 VARCHAR2(10)
);
-- More options for initial value and increment value
create table t1 (
c1 NUMBER GENERATED ALWAYS as IDENTITY(START with 1 INCREMENT by 1),
c2 VARCHAR2(10)
);
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