**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.
```

if (select_query.having())
        assertNoWindows(select_query.having(), "in HAVING");
    if (select_query.where())
        assertNoWindows(select_query.where(), "in WHERE");
    if (select_query.prewhere())
        assertNoWindows(select_query.prewhere(), "in PREWHERE");
    if (select_query.window())
        assertNoWindows(select_query.window(), "in WINDOW");
    GetAggregatesVisitor::Data data;
    GetAggregatesVisitor(data).visit(query);
    
    
    
    for (const ASTFunction * node : data.window_functions)
    {
        if (node->arguments)
        {
            for (auto & arg : node->arguments->children)
            {
                assertNoWindows(arg, "inside another window function");
            }
        }
        if (node->window_definition)
        {
            assertNoWindows(node->window_definition, "inside window definition");
        }
    }
    return data.window_functions;
}
class MarkTupleLiteralsAsLegacyData