MySQL常用SQL時間查詢語句

比較實用的時期查詢SQL語句。假設數據庫表中時間字段爲add_time，類型爲datetime。

1.查詢當天

SELECT * FROM `article` WHERE to_days(`add_time`) = to_days(now());

2.查詢昨天

SELECT * FROM `article` WHERE to_days(now()) – to_days(`add_time`) = 1;

3.查詢最近7天

SELECT * FROM `article` WHERE date_sub(curdate(), INTERVAL 7 DAY) <= DATE(`add_time`);
//OR
SELECT * FROM `article` WHERE curdate()- INTERVAL 7 DAY <= DATE(`add_time`);

4.查詢最近30天

SELECT * FROM `article` WHERE date_sub(curdate(), INTERVAL 30 DAY) <= DATE(`add_time`);
//OR
SELECT * FROM `article` WHERE curdate()-INTERVAL 30 DAY <= DATE(`add_time`);

5.查詢截止到當前本週

SELECT * FROM `article` WHERE YEARWEEK(date_format(`add_time`,'%Y-%m-%d')) = YEARWEEK(now());#默認從週日開始到週六
SELECT * FROM `article` WHERE YEARWEEK(date_format(`add_time`,'%Y-%m-%d'),1) = YEARWEEK(now(),1);#設置爲從週一開始到週日

6.查詢上週的數據

SELECT * FROM `article` WHERE YEARWEEK(date_format(`add_time`,'%Y-%m-%d')) = YEARWEEK(now())-1;

7.查詢截止到當前本月

SELECT * FROM `article` WHERE date_format(`add_time`, '%Y%m') = date_format(curdate() , '%Y%m');

5.查詢上一月

//經過測試，下面第一種情況查詢速度最快，explain之後filtered爲100%
SELECT * FROM `article` WHERE period_diff(date_format(now() , '%Y%m') , date_format(`add_time`, '%Y%m')) =1;
SELECT * FROM ke_order_list WHERE add_time BETWEEN '2019-03-01' AND '2019-04-01';
SELECT * FROM ke_order_list WHERE add_time LIKE '2019-03%'