Method get_substr

django/db/models/functions/text.py:169–170

(self)

        super().__init__(expression, length, **extra)

    def get_substr(self):
        return Substr(self.source_expressions[0], Value(1), self.source_expressions[1])

    def as_oracle(self, compiler, connection, **extra_context):
        return self.get_substr().as_oracle(compiler, connection, **extra_context)