目錄mysql將時(shí)間戳轉(zhuǎn)換為年月日格式進(jìn)行查詢mysql時(shí)間戳轉(zhuǎn)換成Java年月日輸出總結(jié)mysql將時(shí)間戳轉(zhuǎn)換為年月日格式進(jìn)行查詢

create_time時(shí)間格式

SELECT DATE_FORMAT(create_time,'%Y%m%d') days,COUNT(id) COUNT FROM role GROUP BY days;

create_time時(shí)間戳格式

SELECT FROM_UNIXTIME(create_time,'%Y%m%d') days,COUNT(id) COUNT FROM role GROUP BY days;

舉例：

<!--?? ?查詢主管最近30天注冊(cè)用戶數(shù) ? -->?? ??? ?SELECT DATE_FORMAT(a.create_time, '%Y%m%d') AS days, COUNT(*) AS userCount?? ??? ?FROM sssss a?? ??? ?WHERE ?a.dept_id = 1?? ??? ??? ?AND a.create_time >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)?? ??? ??? ?AND a.recommender_user_id IN (?? ??? ??? ??? ?SELECT DISTINCT b.recommender_user_id?? ??? ??? ??? ?FROM sssssss ?b?? ??? ??? ??? ??? ?JOIN ssssss c ON b.recommender_user_id = c.user_id?? ??? ??? ??? ?WHERE c.distri_user_id = #{userId}?? ??? ??? ?)?? ??? ?GROUP BY days;mysql時(shí)間戳轉(zhuǎn)換成Java年月日輸出

MySQL存儲(chǔ)時(shí)間戳轉(zhuǎn)換成Java年月日輸出實(shí)體類

@NotBlank(message = '使用時(shí)間不能為空') @ApiModelProperty('使用時(shí)間') private String useTime;

數(shù)據(jù)庫(kù)存儲(chǔ)int是時(shí)間戳

把數(shù)據(jù)庫(kù)存儲(chǔ)的時(shí)間戳，轉(zhuǎn)換成年-月-日-時(shí)-分-秒

SELECT from_unixtime(`use_year`)FROM 表名

輸出年份，使用LEFT函數(shù)，按需截取

SELECT LEFT(from_unixtime( `use_year` ),4)FROM 表名

獲取年月日

SELECT LEFT(from_unixtime( `use_year` ),10)FROM 表名

總結(jié)

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持好吧啦網(wǎng)。