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What I need is altering default Wordpress posts-pooling mechanism so I can get posts from other tables in database, not just default wp_posts and wp_postmeta.

How is that possible?

I'm ready to proudly die dealing with consequences of altering Wordpress core.

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Don't hack the Core. There are filters in WP_Query that should more than suffice to include your table, if your SQL and regex are good enough.

  • posts_distinct - Alters SQL 'DISTINCTROW' clause to the query that returns the post array.
  • posts_groupby - Alters SQL 'GROUP BY' clause of the query that returns the post array.
  • posts_join - Alters SQL 'JOIN' clause of the query that returns the post array.
  • post_limits - Alters SQL 'LIMIT' clause of the query that returns the post array.
  • posts_orderby - Alters SQL 'ORDER BY' clause of the query that returns the post array.
  • posts_where - Alters SQL 'WHERE' clause of the query that returns the post array.
  • posts_join_paged - Alters SQL paging for posts using 'JOIN' clause of the query that returns the post array.
  • posts_where_paged - Alters SQL paging for posts using 'WHERE' clause of the query that returns the post array.
  • posts_clauses - Alters all the SQL clauses above in one go. It gives you an array of elements that are easy to alter

http://codex.wordpress.org/Class_Reference/WP_Query#Filters

Your question is not detailed enough for a more detailed answer.

  • Thanks. It will take some time to to check this and, and I'll accept your answer – Miloš Đakonović May 28 '13 at 13:20
  • I will accept your answer to rewart your efforts, but I must ask one more (much more detailed ) question regarding this issue. – Miloš Đakonović Jun 15 '13 at 9:01

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