@ConstantFunction(name = "bitShiftLeft", argTypes = {BIGINT, BIGINT}, returnType = BIGINT)
    public static ConstantOperator bitShiftLeftBigint(ConstantOperator first, ConstantOperator second) {
        return ConstantOperator.createBigint(first.getBigint() << second.getBigint());
    }
@Test
    public void bitShiftLeftBigint() {
        assertEquals(800, ScalarOperatorFunctions.bitShiftLeftBigint(O_BI_100, O_BI_3).getBigint());
    }