**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.
```

{
        bool exists_expression = func.name == "exists"
            && func.arguments && func.arguments->children.size() == 1
            && typeid_cast<const ASTSubquery *>(func.arguments->children[0].get());
        if (!exists_expression)
            return;
        
        auto subquery_node = func.arguments->children[0];
        auto table_expression = std::make_shared<ASTTableExpression>();
        table_expression->subquery = std::move(subquery_node);
        table_expression->children.push_back(table_expression->subquery);
        auto tables_in_select_element = std::make_shared<ASTTablesInSelectQueryElement>();
        tables_in_select_element->table_expression = std::move(table_expression);
        tables_in_select_element->children.push_back(tables_in_select_element->table_expression);
        auto tables_in_select = std::make_shared<ASTTablesInSelectQuery>();
        tables_in_select->children.push_back(std::move(tables_in_select_element));
        auto select_expr_list = std::make_shared<ASTExpressionList>();