If name of key column equals in both tables in Storage Join `JOIN ON` trows an error:

```
:) CREATE TABLE t1 (x String) ENGINE = TinyLog;

:) CREATE TABLE t2 (x String) ENGINE = Join(ALL, INNER, x);

:) select * from t1 join t2 USING(x);

Ok.

0 rows in set. Elapsed: 0.036 sec.

:) select * from t1 join t2 ON (t1.x == t2.x);

0 rows in set. Elapsed: 0.026 sec.

Received exception from server (version 21.3.1):
Code: 8. DB::Exception: Received from localhost:9000. DB::Exception: Cannot find column `t2.x` in source stream.

```

If secondary column name match we tables cannot be joined with `USING` too:

```
:) CREATE TABLE t1 (x String, y String) ENGINE = TinyLog;

:) CREATE TABLE t2 (x String, y String) ENGINE = Join(ALL, INNER, x);

:) select * from t1 join t2 USING(x);


0 rows in set. Elapsed: 0.027 sec.

Received exception from server (version 21.3.1):
Code: 8. DB::Exception: Received from localhost:9000. DB::Exception: Cannot find column `t2.y` in source stream.

```
{
public:
    using Mapped = RowRef;
    using FindResult = ColumnsHashing::columns_hashing_impl::FindResultImpl<Mapped, true>;
    KeyGetterForDict(const ColumnRawPtrs & key_columns_, const Sizes &, void *)
        : key_columns(key_columns_)
    {}
    FindResult findKey(const TableJoin & table_join, size_t row, const Arena &)
    {
        const DictionaryReader & reader = *table_join.dictionary_reader;
        if (!read_result)
        {
            reader.readKeys(*key_columns[0], read_result, found, positions);
            result.block = &read_result;
            if (table_join.forceNullableRight())
                for (auto & column : read_result)
                    if (table_join.rightBecomeNullable(column.type))
                        JoinCommon::convertColumnToNullable(column);
        }
        result.row_num = positions[row];
        return FindResult(&result, found[row], 0);
    }
private:
    const ColumnRawPtrs & key_columns;
    Block read_result;