Question

i try to join my post table rows with terms table, my database post and database structure is same as wordpress, i don’t know how join one row with multiple rows;

CLEAR Example:

post table :

post_id
post_title
post_content
post_dateline
post_owner

terms table:

term_id
term_name
term_title
term_type

term_relationships table:

post_id
term_id

Now i have :
a post with id value 3;
three terms with id values (4,6,7)

term_relationships rows like:

  post_id      term_id
     3            4
     3            6
     3            7

is possible get all these information with one query, or i should first query posts, then try get terms information?

Answer 1

Use GROUP_CONCAT function of mysql it will join multiple rows to a single row but give you the result as a comma seperated field.