Query....

i have a table with following records

id is auto increment field
issueid is a numeric field


id issueid Body
1 1 my tite
2 2 Testing
3 1 titile1
4 3 titile2
5 4 titile3
6 3 titile5
7 5 titile9
8 1 titile8
9 2 titile7
10 5 titile11



the above table is for Forums where people can discuss there queries
new issueid is generated for every new forum and issueid for the forum will be same for the replies posted for a particular forum.



how will i retreive the fields for the first post of any thread....

the result for the above table should be

id issueid Body
1 1 my tite
2 2 Testing
4 3 titile2
5 4 titile3
7 5 titile9



Thanx in Advance