php - How do I SELECT my content and all the tags that go with it? -


i've tried hard have normalized database , have 3 tables -

  1. content (c)
  2. content_tags (ct)
  3. tags (t)

what i'm trying here select rows , return them tags associated it. @ moment, returns 1 tag reason.

here code i'm using:

   select *,            group_concat(t.tag) tags      content c  left join category ca on c.cid = ca.cid  left join contenttags ct on c.smid = ct.smid  left join tags t on ct.tid = t.tid  left join users u on c.uid = u.uid     (t.tag in ('tag1', 'tag2', 'tag3'))  group c.smid

it returns this:

  • cid
  • content
  • url
  • tag (but 1 instead of multiple)

do mean find contents , tags, @ least 1 of tag in $tagarray ? 

   select c.*, ca.*, u.*,            group_concat(t.tag) tags      content c  left join category ca on c.cid = ca.cid       join contenttags ct on c.smid = ct.smid       join tags t on ct.tid = t.tid  left join users u on c.uid = u.uid     exists ( select *                    contenttags ct2                      join tag t2                        on t2.tid = ct2.tid                    ct2.smid = c.smid                      , ct2.tag in ('$tagarray')                  )  group c.smid

and left join can turned inner joins, too, without losing results. try it. unless category.cid or category.uid fields can have null values. in case, keep related left join.


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