如何申請多在從句中一個MySQL查詢

Question

我有ID的列表，並相應建立了Exmple日期 ：

1 2014-05-01

2 2014年7月1日

3 2014-08-01

極品建議關於編寫MySQL select語句這CORRE後給ID細節自動創建日期。

select id,count(*) from id_details where id IN(1,2,3) where resolved_at >(2014-05-01,2014-07-01,2014-08-01) group by id 

Answer 1

resolved_at列的日期條件不正確。同樣，如果在查詢中有兩個WHERE子句，那也不正確。您可以在IN子句中指定>條件，就像您正在嘗試。您的查詢應該像

select id,count(*) 
from id_details 
where id IN (1,2,3) 
and (resolved_at >= '2014-05-01' 
and resolved_at <= '2014-08-01') 
group by id 

我認爲你只是想用IN運營商resolved_at柱像

select id, 
count(*) 
from id_details 
where id IN (1,2,3) 
and resolved_at IN ('2014-05-01','2014-07-01','2014-08-01') 
group by id