How to get the current date and time in MySQL? If you want to get the date and time of when an SQL statement begins execution, use the NOW function. On the other hand, if you want to get the exact date and time—regardless of the execution time—you can use the SYSDATE function. ...
Table 14.11 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(), ...
UNIX_TIMESTAMP() Return a Unix timestamp UTC_DATE() Return the current UTC date UTC_TIME() Return the current UTC time UTC_TIMESTAMP() Return the current UTC date and time WEEK() Return the week number WEEKDAY() Return the weekday index WEEKOFYEAR() Return the calendar week...
7.CURRENT_TIME, CURRENT_TIME() CURRENT_TIME 和CURRENT_TIME() 是CURTIME()的同义词。 8.CURRENT_TIMESTAMP, CURRENT_TIMESTAMP() CURRENT_TIMESTAMP和 CURRENT_TIMESTAMP()是NOW()的同义词。 9.DATE(expr) 提取日期或时间日期表达式expr中的日期部分。 mysql> SELECT DATE('2003-12-31 01:02:03'); ->...
CURDATE()/CURRENT_DATE 以“YYYY-MM-DD”或“YYYYMMDD”格式返回当前的日期值 mysql> SELECT CURDATE(),CURRENT_DATE; +---+---+ | CURDATE() | CURRENT_DATE | +---+---+ | 2017-07-28 | 2017-07-28 | +---+---+ CURTIME()
官方文档:Date and Time Functions 注: 接收date参数的函数在收到datetime时,会忽略掉time部分;接收time参数的函数在收到datetime时,也会忽略掉date部分。 在一次查询中,如果多次用到查询当前时间的函数,如NOW()/CURDATE()等,则其返回结果是一样的。同样适用于: CURDATE(), CURTIME(), UTC_DATE(), UTC_TIME...
CREATETABLEt1(idint,ctimeDATETIMEDEFAULTCURRENT_TIMESTAMP,utimeDATETIMEDEFAULTCURRENT_TIMESTAMPONUPDATECURRENT_TIMESTAMP); 这两个字段使用的频率很高。 1.3 零值与NULL 五种时间相关的类型都有各自的零值,但是否允许零值有些不同。 默认情况下MySQL不允许日期中有零值,比如2020-00-01等,这通过NO_ZERO_IN_DATE和...
MySQL date and time DataTypes Overview: DATE, TIME, DATETIME, TIMESTAMP, YEAR & Zero Values #Part2.1 Automatically insert Current Date and Time in MySQL table #Part – 2.2 MySQL: Working with date time arithmetic #Part 2.3.1 MySQL FLOAT vs DEC: working with fraction and decimal [DEC] ...
TheTIMESTAMPandDATETIMEdata types offer automatic initialization and updating to the current date and time. For more information, seeSection 11.2.5, “Automatic Initialization and Updating for TIMESTAMP and DATETIME”[4]. 小数部分应始终用小数点与时间的其余部分分隔;不识别其他小数秒分隔符。有关 MySQL...
TheTIMESTAMPandDATETIMEdata types offer automatic initialization and updating to the current date and time. For more information, seeSection 11.2.5, “Automatic Initialization and Updating for TIMESTAMP and DATETIME”. 小数部分应始终用小数点与时间的其余部分分隔;不识别其他小数秒分隔符。有关 MySQL 支持...