MySQL

select * from wp_98_posts;
select * from wp_98_posts p left join wp_click c on p.ID = c.tag_id
where c.blog_id = 98  and p.ID = 13 group by tag_id,blog_id ;

select * from wp_98_posts;
select * from wp_98_posts p left join wp_click c on p.ID = c.tag_id 
and c.blog_id = 98  and p.ID = 13 group by tag_id,blog_id ;