vb.org Archive - Pulling a specific number of threads from each forum.. can it be done in one query?

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- - Pulling a specific number of threads from each forum.. can it be done in one query? (https://vborg.vbsupport.ru/showthread.php?t=63930)

djnoz

04-15-2004 11:43 PM

Pulling a specific number of threads from each forum.. can it be done in one query?

What I need to do, is write a query that pulls the latest 4 threadids out of a specified list of forumids individually.

So basically, if I was specifying forumids 1 and 2, the query would display two lists of the four latest threadids from those forums.

The output at the mysql console would look something like this

Code:

Forumid        |Threadid

1        |12

1        |11

1        |9

1        |7



2        |13

2        |10

2        |8

2        |6

Is this possible, or must I run multiple queries?

Thanks :)

Velocd

04-17-2004 04:30 AM

PHP Code:


		
			
SELECT * 

FROM thread 

WHERE forumid IN ($forumid_list) 

ORDER BY dateline 

LIMIT 4

This is what you need, if I understood you correctly.

djnoz

04-17-2004 05:56 AM

The problem with that query is that I want the 4 latest threads from each forum... that query takes the 4 latest threads aggregated together from both forums.

If two forums are specified, the query should return 8 values - 4 threads from the first forum, and 4 threads from the second forum. I haven't been able to figure out how to do this without running a seperate query for each forum.

Thanks for the reply anyway. ;)

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