Difference between “on .. and” and “on .. where” in SQL Left Join? [duplicate]

Answer 1

I try some time ,and I know what is the reason, it only related to a priority.

select * from A a left join B b on a.id=b.id and b.id=2

this means A left join (where b.id=2) this is the condition filter B first

Select *　from A a left join B b on a.id=b.id where a.id=2

this means after join B ,then filter by a.id=2