Question

I have a table that is laid out as below:

id - tag_id - post_id
1  -    1   -  3
2  -    1   -  6
3  -    1   -  2
4  -    2   -  3
5  -    2   -  9
6  -    1   -  7

I would like to write an mySQL statement that finds out how many times a tag is referenced.

I would then use PHP to format the results. tag # was referenced # times and they would be sorted in order of # times.

My ability with MySQL is limited to very basic SELECT, INSERT, UPDATE and DELETE statements, so I’m not sure of the way to go about this. Can you help?

Answer 1

select tag_id, count(*)
from mytable
group by tag_id
order by count(*) desc

This will order your results by count(*) in descending order, meaning the tags with most posts will appear on top rows.