SELECT id, name, gender, score FROM students ORDER BY score; --ORDER BY score 按score从低到高排序(升序:ASC 默认升序可省略) SELECT id, name, gender, score FROM students ORDER BY score DESC; --DESC 倒序,从高到低排序 SELECT id,
mysql>SELECTcol,>CAST(col ATTIMEZONEINTERVAL'+00:00'ASDATETIME)ASut>FROMtsORDERBYid;+---+---+|col|ut|+---+---+|2020-01-0110:10:10|2020-01-0115:10:10||2019-12-3123:40:10|2020-01-0104:40:10||2020-01-0113:10:10|2020-01-0118:10:10||2020-01-0110:10:10|2020-01-0115:...
first_name , salary from t_employees order by salarydesc #2.再查询临时表中前5⾏员⼯信息 select employee_id , first_name , salary from (临时表) limit 0,5; #SQL:合并 select employee_id , first_name , salary from (select employee_id , first_name , salary from t_employees order by...
SELECT DATE(create_time) AS DATE,COUNT(*) FROM 表 WHERE create_time<'2021-01-10' GROUP BY DATE ORDER BY DATE; 按照小时统计 SELECT DATE_FORMAT(create_time,'%Y-%m-%d %H:00:00') AS TIME,COUNT(*) FROM 表 WHERE create_time>'2021-03-25' AND create_time<'2021-03-26' GROUP BY TIM...
DATE(create_time) <DATE_SUB(CURDATE(), INTERVAL1DAY);DATE(create_time)< DATE_SUB(CURDATE(), INTERVAL7month); createtime < DATE_SUB(NOW(),INTERVAL 5 MONTH) 根据时间分类排序: /*按天统计*/GROUPBYDATE(create_time)ORDERBYDATE(create_time)DESC;/*按周统计*/GROUPBYWEEK(create_time)ORDERBYWEE...
在MySQL 8.0.22 及更高版本中,使用带有AT TIME ZONE操作符的CAST()检索时,可以将TIMESTAMP值转换为 UTCDATETIME值,如下所示: mysql>SELECTcol, >CAST(colATTIMEZONEINTERVAL'+00:00'ASDATETIME)ASut >FROMtsORDERBYid; +---+---+ | col | ut | +---+---+ | 2020-01-01 10:10...
一、 ORDER BY 排序要求:按照字段IS_NEW_PROJ的降序、字段LOAN_APR的降序、字段GMT_BUY_START的升序排序 sql语句如下: SELECT b.PROJECT_ID...二、 ORDER BY FIELD排序(自定义排序规则) 要求:按照字段PROJECT_STATUS指定的顺序排序 sql语句如下: SELECT b.PROJECT_ID AS project_id...三、 ORDER BY FIELD排...
mysql> SELECT ADDDATE('2008-01-02', 31); -> '2008-02-02' This function returns NULL if date or days is NULL. ADDTIME(expr1,expr2) ADDTIME() adds expr2 to expr1 and returns the result. expr1 is a time or datetime expression, and expr2 is a time expression. Returns NULL if...
Table 12.11 Date and Time Functions NameDescription ADDDATE() Add time values (intervals) to a date value ADDTIME() Add time CONVERT_TZ() Convert from one time zone to another CURDATE() Return the current date CURRENT_DATE(), CURRENT_DATE Synonyms for CURDATE() CURRENT_TIME(), ...
在MySQL 8.0.22 及更高版本中,使用带有AT TIME ZONE操作符的CAST()检索时,可以将TIMESTAMP值转换为 UTCDATETIME值,如下所示: mysql> SELECT col, > CAST(col AT TIME ZONE INTERVAL '+00:00' AS DATETIME) AS ut > FROM ts ORDER BY id;