php - Select 2 tables with one select query -

i have 2 tables on database. 1 table has categories , other 1 has posts. in category table have column called "active".

what i'm trying do, select posts have category=0.

here's select got far:

select tb_posts.*, tb_categories.active  tb_posts, tb_categories  tb_categories.active='0'  order datapub desc 

the above query doesn't work loads posts not matter category status. :(

you need left join:

select tp.*, tc.active  tb_posts tp left join tb_categories tc on tb.category_id = tc.id tc.active='0'  order datapub desc 

the join done on category column (replace proper column name - guess) (probably) referencing id in tb_categories (again, replace name).

for exact query, please show table structures.