SQL database tag request -


i have photo table looks this:

id  title      rating  photopath 1   myself     7.0     /photopath1.jpg 2   cat        8.0     /photopath2.jpg 3   dog        6.0     /photopath3.jpg 4   girlfriend 5.0     /photopath4.jpg

and tag table:

id  tag_name   photo_id 1   selfie     1 2   sun        1 3   nature     2 4   relax      2 5   loyal      3 6   journal    3 7   selfie     4 8   sun        4 9   problems   4

and want call photos have tags "selfie" , "sun". how do that?

select p.*   photo p   join (select p.id           photo p           join tag t             on p.id = t.photo_id          t.tag_name in ('selfie', 'sun')          group p.id         having count(*) = 2) x     on p.id = x.id

fiddle: http://sqlfiddle.com/#!2/5c95c2/2/0

output:

| id |      title | rating |       photograph | |----|------------|--------|------------------| |  1 |     myself |      7 | /photograph1.jpg | |  4 | girlfriend |      5 | /photograph4.jpg |

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