===date,time,datetime=== MariaDB [db1]> create table t11(d date,t time,dt datetime); MariaDB [db1]> desc t11; +---+---+---+---+---+---+ | Field | Type | Null | Key | Default | Extra | +---+---+---+---+---+---+ | d | date | YES | | NULL | | ...
MySQL has data types for storing dates and times:DATE,TIME,DATETIME,YEAR, andTIMESTAMP. MySQL tries to interpret date and time values in several formats but the date parts must always be given in year/month/day order. MySQL automatically converts a date or time value to a number if the ...
The date and time data types for representing temporal values areDATE,TIME,DATETIME,TIMESTAMP, andYEAR. For theDATEandDATETIMErange descriptions,“supported”means that although earlier values might work, there is no guarantee. MySQL permits fractional seconds forTIME,DATETIME, andTIMESTAMPvalues, with...
CREATE TABLE example ( picture BLOB );举例创建包含不同数据类型的表：CREATE TABLE example ( id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(100), birthdate DATE, email VARCHAR(255), profile_picture BLOB, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP );插入数据：INSERT...
The date and time data types for representing temporal values areDATE,TIME,DATETIME,TIMESTAMP, andYEAR. For theDATEandDATETIMErange descriptions,“supported”means that although earlier values might work, there is no guarantee. MySQL permits fractional seconds forTIME,DATETIME, andTIMESTAMPvalues, with...
CREATE TABLE example (id INT) ENGINE=InnoDB; MyISAM:适合读密集型应用,支持全文索引CREATE TABLE logs (id INT, message TEXT) ENGINE=MyISAM; Memory:将数据存储在内存中,速度极快但不持久CREATE TABLE temp_data (id INT) ENGINE=MEMORY; Archive:适合存储和检索大量很少被查询的历史数据...
See the following example : The following command displays current time zone information : Let create a table with two fields udatetime (data type -> datetime) utimestamp (data type -> timestamp) and insert one record with now() (returns the current date and time) as a value in both ...
SELECTDATE(@dt); This function is very useful in case you want to query data based on a date but the data stored in the column is based on both date and time. Let’s see the following example. 1 2 3 4 5 6 7 CREATETABLEtest_dt( ...
TheTIMESTAMPdata type is used for values that contain both date and time parts.TIMESTAMPhas a range of'1970-01-01 00:00:01'UTC to'2038-01-19 03:14:07'UTC. “TIMESTAMP”数据类型用于包含日期和时间部分的值。 “TIMESTAMP”的范围为“1970-01-01 00:00:01”UTC 到“2038-01-19 03:14:...
Date and Time Data Types Data typeDescription DATEA date. Format: YYYY-MM-DD. The supported range is from '1000-01-01' to '9999-12-31' DATETIME(fsp)A date and time combination. Format: YYYY-MM-DD hh:mm:ss. The supported range is from '1000-01-01 00:00:00' to '9999-12-31 ...