sqlit中使用到的查詢語句，sqlit使用語句

sqlit中使用到的查詢語句，sqlit使用語句

最近使用sqlite查詢比較多，包括連表查詢等。記錄一下，以免忘記！

1.先根據時間排序後選擇前十條：

select * from MyBill order by  createTime desc limit 10；

2.求price的和：

select sum(price) as sum from MyBill；

3.這個是有個分類表，有個賬單表，根據分類中的主分類分類統計再排序：

select sum(mysum),tb.pid from"
+ "(select sum(price) as mysum,consumetype.title as tt,consumetype.parentid as pid from mybill "
+ "left join consumetype on mybill.typeid =consumetype.id "
+ "group by mybill.typeid) as tb group by tb.pid order by sum(mysum) desc";

4.這個是有個分類表，有個賬單表，根據分類中的子分類分類統計再排序：

select sum(price),consumetype.title from mybill "
+ "left join consumetype on mybill.typeid =consumetype.id "
+ "group by mybill.typeid order by sum(price) desc";

5.根據時間來比較選擇：

 select * from MyBill where createTime < datetime('2015-05-19')

相應的其他時間函數方式如下：

        *     select datetime('now'); 
*     select datetime('2006-10-17 00:20:00','+1 hour','-12 minute');
* select date('2006-10-17','+1 day','+1 year');
* select datetime('now','start of year');
* select datetime('now','start of month');
* select datetime('now','start of day');
* select datetime('now','+10 hour','start of day','+10 hour');
* select datetime('now','localtime');
* select datetime('now','+8 hour');

著作權聲明：本文為博主原創文章，未經博主允許不得轉載。