presto-parser/src/main/java/io/prestosql/sql/tree/ShowColumns.java/ShowColumns/equals
class ShowColumns:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }
        ShowColumns o = (ShowColumns) obj;
        return Objects.equals(table, o.table);
    }