獲取sql計數和行

Question

我想獲取總計行數並獲取行數。我有這樣的事情

SELECT count(id), id 
FROM post 
LIMIT 10; 

Answer 1

內部查詢獲取數和使用join就可以得到所需要的數據！

select a.*,b.count 
from post a 
join (SELECT count(id) as count, id 
     FROM post group by id) b 
    on a.id=b.id;