so if I change the join to cross join and take off 1=1, it will be the same, correct?
But I read somewhere if a cross join have a where clause, it is the same as inner join,
is it true for this case?
You can produce CROSS join with any of the following:
select a.*, b.*
from a CROSS JOIN b
from a INNER JOIN b
on 1=1 -- fake condition to satisfy INNER JOIN syntax.
The results would be same until you add any filters.