mysql - How to get only one of the rows that are different? -


i'm making newsletter php module has queue list (so cron file can send specific number of emails minute), , wan't show in backoffice if newsletter has emails on queue , how many, save processing time, don't wan't each newsletter , go field field if has emails send.

so, imagine structure in newsletter_queue table: 

newsletter_id   email 1           test1@hotmail.com 1           test2@hotmail.com 1           test3@hotmail.com 1           test4@hotmail.com 2           test2@hotmail.com 2           test3@hotmail.com 2           test4@hotmail.com 3           test4@hotmail.com

i wan't values:

newsletter_id   count(email) 1               4 2               3 3               1

so, query newsletter newsletter , check if sends pending , count, wan't save processing time. 

select newsletter_id, count(email) newsletter_queue  group newsletter_id

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