**Usage**
Postgres, MySQL, and Oracle support the expression `LEFT JOIN ... ON 1 = 1`, but ClickHouse does not.

It may be possible to replace `LEFT JOIN ... ON 1 = 1` with `CROSS JOIN`, but I want to use the query in the same form for lots of databases.

Please support the expression `LEFT JOIN ... ON 1 = 1`.


**Detailed SQL**
```SQL
CREATE TABLE test
(
    `name` Nullable(String),
    `id` int
)
ENGINE = Log();

insert into test values ('a', 1) ('b', 2) (null, 3);

select * from test t1 left join (select * from test ) t2 on 1 = 1   
-- DB::Exception: Not equi-join ON expression: 1 = 1. No columns in one of equality side.: While processing 1 = 1.
```

{
    for (const String & column_name : names)
    {
        auto & col = block.getByName(column_name);
        col.column = recursiveRemoveLowCardinality(col.column);
        if (change_type)
            col.type = recursiveRemoveLowCardinality(col.type);
    }
}
void restoreLowCardinalityInplace(Block & block, const Names & lowcard_keys)
{
    for (const auto & column_name : lowcard_keys)
    {
        if (!block.has(column_name))
            continue;
        if (auto & col = block.getByName(column_name); !col.type->lowCardinality())
            JoinCommon::changeLowCardinalityInplace(col);
    }
    for (size_t i = 0; i < block.columns(); ++i)
    {
        auto & col = block.getByPosition(i);
        if (col.type->lowCardinality() && col.column && !col.column->lowCardinality())
            col.column = changeLowCardinality(col.column, col.type->createColumn());
    }
}
ColumnRawPtrs extractKeysForJoin(const Block & block_keys, const Names & key_names)