Count published posts for a category and month/year

I would like to count published posts for a category and month/year but I can not...

I can do for a category (without set month/year) :

SELECT wp_term_taxonomy.count
FROM wp_terms, wp_term_taxonomy
WHERE wp_terms.term_id=wp_term_taxonomy.term_id
  AND wp_term_taxonomy.term_id=7

but not with month/year :

SELECT count
FROM wp_term_taxonomy, wp_posts, wp_term_relationships
WHERE wp_posts.ID = wp_term_relationships.object_id开发者_JAVA技巧
  AND wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id
  AND wp_term_taxonomy.term_id = '7'
  AND wp_posts.post_type = 'post'
  AND wp_posts.post_status = 'publish'
  AND wp_posts.post_date LIKE '2011-06-%'

Thanks for your help :)

---

SELECT COUNT(*)
FROM wp_term_taxonomy, wp_posts, wp_term_relationships 
WHERE wp_posts.ID = wp_term_relationships.object_id 
AND wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id 
AND wp_term_taxonomy.term_id = '7' 
AND wp_posts.post_type = 'post' 
AND wp_posts.post_status = 'publish' 

AND YEAR(wp_posts.post_date) =2011
AND MONTH(wp_posts.post_date) =6

Or replace the last two lines with between

AND wp_posts.post_date BETWEEN '2011-06-01' AND '2011-06-30'