php - How to get values from two table with subqueries? -


i have 2 tables names feed, , friendship....

friendship table has these fields..toid session user id, fromid friend id, , status may 0 or 1, , feed table contains id,post_user_id feed poster id, , contents. want feed feed table friends able feeds friends can't own feed , when put own id in condition query executed result empty. tried these

    select * feed `post_user_id` in (select fromid       gr_user_friendships toid = 47) order        post_date_time desc

/****this query giving friends records not mine records put own id in condition agains****/

   select * feed `post_user_id` in (select fromid       gr_user_friendships toid = 47) , `post_user_id` = 47 order       post_date_time desc

/*this time results empty**/

i tried inner join no success @ all

try:

select * feed post_user_id = 47 or 'post_user_id' in  (select fromid gr_user_friendships toid = 47) order   post_date_time desc

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