Join vs. sub-query

Question

I am an old-school MySQL user and have always preferred JOIN over sub-query. But nowadays everyone uses sub-query, and I hate it; I don\'t know why.

Answer 1

As per my observation like two cases, if a table has less then 100,000 records then the join will work fast.

But in the case that a table has more than 100,000 records then a subquery is best result.

I have one table that has 500,000 records on that I created below query and its result time is like

SELECT * 
FROM crv.workorder_details wd 
inner join  crv.workorder wr on wr.workorder_id = wd.workorder_id;

Result : 13.3 Seconds

select * 
from crv.workorder_details 
where workorder_id in (select workorder_id from crv.workorder)

Result : 1.65 Seconds