presto-spi/src/main/java/io/prestosql/spi/type/SqlDecimal.java/SqlDecimal/equals
class SqlDecimal:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        SqlDecimal that = (SqlDecimal) o;
        return Objects.equals(unscaledValue, that.unscaledValue);
    }