which is the correct join in this case ?

[realin]

hi guys,

i have two tables as

[B]thread_post[/B]

post_id
thread_id
thread_cat
thread_post_id
thread_post_time
thread_ip
thread_username

[B]and thread_text[/B]

post_id
post_subject
post_text

i want to know which should be the join used here to fetch the post_text from the later table by comparing he post_id fields and with a where condition as thread_id
currently i am using is

[code=mysql]select t1.post_text,t1 .post_id,t2.thr ead_post_id,t2. thread_username from thread_text as t1 join thread_post as t2 on t2.post_id=t1.p ost_id where t2.thread_id=$i d[/code]

is this perfect ?

Can this be done without join ?
And what if my post_id become unequal.. just in case a query is executes for one table and not for other..
let me know thanks :)