mysql timestamp

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The difference between datetime and timestamp in MySQL

Original address: http://database.51cto.com/art/200905/124240.htmSameShowThe timestamp column is displayed in the same format as the datetime column. In other words, the display width is fixed at 19 characters, and the format is Yyyy-mm-dd HH:MM:SS.DifferentRangedatetime Retrieves and displays datetime values in the ' yyyy-mm-dd HH:MM:SS ' format. The supported range is ' 1000-01-01 00:00:00 ' to ' 9999-12-31 23:59:59 '

MySQL timestamp and long storage time efficiency comparison

Show create table 20130107date;CREATE TABLE ' 20130107date '(' id ' int( One) not NULLAuto_increment,' C_date ' timestamp not NULL DEFAULT Current_timestamp,' C_date_long ' int( -) not NULL,' Idx_date ' timestamp not NULL DEFAULT ' 0000-00-00 00:00:00 ',' Idx_date_long ' int( One) not NULL,PRIMARY KEY(' id '),KEY ' 20130107date_idx_date '(' Idx_date '),KEY ' 20130107date_idx_long '(' Idx_date_long ')) Eng

Ask MySQL database there is a field timestamp, how to query the data between the interval date?

The MySQL database has a field timestamp, how to query the data between the interval date?

MySQL Timestamp valid range

Things From_unixtime/unix_timestamp overflow, unable to use Cause From_unixtime returns the number of seconds from 1970-01-01 to the present, which is the result of the int, and the valid range of int is [ -2^31 + 1, 2^31-1], i.e. [-2147483648, 2147483648], 2147483648 /365/24/3600 conversion Adult also for more than 68 years, the maximum validity is one day in 2038. Processing Compatibility with previous processing, can be used first, then minus 30, you can temporarily scal

Examples of MySQL conversion timestamp

MySQL transition timestamp, directly let the MySQL statement display time or time stamp form. Convert Time to Timestamp The code is as follows Copy Code Select Unix_timestamp (' 2014-1-1 00:00:00′) If the parameter is empty, it is processed as the current time, showing the curren

Automatic generation and update of timestamp in MySQL

Turn from:automatic generation and update of timestamp in MySQLThe timestamp type in MySQL can set default values, just like any other type.1, Automatic Update and insert to the current time:Table:---------------------------------Table Create Table------ --------------------------CREATE TABLE ' T1 ' ( Data:1 2007-10-08 11:53:352 2007-10-08 11:54:00INSERT into

mysql-tip java.sql.SQLException:Cannot Convert value ' 0000-00-00 00:00:00 ' from column 7 to TIMESTAMP.

Use the datetime type to store the time in the MySQL database, use Resultset.gettimestamp () When reading this field in JDBC, and get a java.sql.Timestamp type of data. Neither resultset.getdate () nor resultset.gettime () can be used here, as the former does not include the time data, which does not include the date data.However, it is not completely secure when using Resultset.gettimestamp (), for example, when a field value of type

12.24 (MySQL engine modification, foreign key issues, java. SQL. timestamp, netbeans LANGUAGE)

MySQL modifies the Database Engine Replace the database engine in MySQL using: alter table mytable engine = InnoDB MySQL foreign key Type Error Code 1005, SQL status hy000: can't create table '. /grasspubsys/# sql-5bc_3.frm '(errno: 150) This error is generally caused by a problem with the foreign key, MySQL offic

Comparison of Date,datetime,int,timestamp and time types in MySQL database

Tags: and time Retrieve SQL database pos type automatic datatime readabilityDatetimeUsed when you need a value that contains both date and time information. MySQL retrieves and displays the datetime value in ' yyyy-mm-dd HH:MM:SS ' format, supported by ' 1000-01-01 00:00:00 ' to ' 9999-12-31 23:59:59 '. 8 bytes of storage.DATEWhen you need only a date value, there is no time part. MySQL retrieves and displa

From_unixtime formatting MySQL timestamp function

from_unixtime formatting MySQL timestamp functionMySQL did not carry out in-depth research, lack of basic knowledge, a problem can only be manuals, it seems to be the MySQL learning schedule. Function: From_unixtimeEffect: Displays the time in MySQL as an int (11) in the "YYYY-MM-DD" format.Syntax: From_unixtime (Unix_

MySQL date and time and transform timestamp function

The formula for using EXECL to convert timestamps is: Code:= (xxxxxxxxxx+8*3600)/86400+70*365+19 Use the MySQL tutorial statement to explain timestamp syntax examples: Code: Select From_unixtime (1234567890, '%y-%m-%d%h:%i:%s ') Report:In MySQL, the storage type of a time field is int (11), how to convert to a character type, for example, storage is 13270655

MySQL query timestamp and date conversion

Label:MySQL provides two functions: From_unixtime (time_stamp), convert timestamp to date unix_timestamp (date) converts the specified date or date string to a timestamp If you want to check the records of orders for the day:[Plain] Select Count(*) fromB_orderWhereDate_format (From_unixtime (Create_time),'%y-%m-%d')=Date_format (now (),'%y-%m-%d') can also be:[Plain] Select Count(*) fromB_ord

Two Methods for converting a mysql timestamp into a common readable time format

Mysql timestamp is converted into two common readable time formats. For more information, see. Mysql timestamp is converted into two common readable time formats. For more information, see. The formula is:Code: Syntax example: Code: Appendix:In mysql, the storage type o

MySQL timestamp type and time zone instance detailed _mysql

MySQL timestamp type and time zone MySQL's timestamp type time range between ' 1970-01-01 00:00:01 ' and ' 2038-01-19 03:14:07 ', exceeding this range the value is recorded as ' 0000-00-00 00:00:00 ', an important feature of this type is that the time that is saved is closely related to the timezone, which is the UTC (Universal Time coordinated) standard, which

Differences between datetime, date, and timestamp types in MySQL

13:50:27 '); Select DATE (' 2013-01-29 13:50:27 '); Select year (' 2013-01-29 13:50:27 '); Select MONTH (' 2013-01-29 13:50:27 '); Select WEEK (' 2013-01-29 13:50:27 '); Select Day (' 2013-01-29 13:50:27 '); Select time (' 2013-01-29 13:50:27 '); Select Curtime (); Select Curdate (); Select Current_date; Select Current_time; Select Current_timestamp; Select Now () Vi. operation of the date: SELECT date_add (' 2013-01-29 13:50:27 ', INTERVAL 1 day); ' 2013-01-30 13:50:27 ' SELECT date_add (' 20

Timestamp-type automatic update time when the record is updated in MySQL

This feature is required for projects. When I use navicat to set the date type to timestamp, I will find that IDE has one more option: This feature is required for projects. When I use navicat to set the date type to timestamp, I will find that IDE has one more option: This feature is required for projects. When I use navicat to set the date type to timestamp

Mysql error timestamp column with Current_timestamp workaround _mysql

One of the problems that you encounter when you deploy your program, the MySQL definition is as follows: Copy Code code as follows: CREATE TABLE ' Example ' ( ' ID ' INTEGER UNSIGNED not NULL auto_increment, ' Created ' TIMESTAMP not NULL DEFAULT Current_timestamp, ' LastUpdated ' TIMESTAMP not NULL on UPDATE Current_timestamp, PRIMARY KEY

Automatic timestamp update in MySQL

Create Table 'ts '( 'Ts1' timestamp not null, 'Ts2' timestamp not null default current_timestamp, 'Ts3' timestamp null default null ) Engine = InnoDB default charset = utf8 Error code: 1293Incorrect table definition; there can be only one timestamp column with current_timestamp in default or on update clause Execution

The MySQL database has a field timestamp, how to query the data between the interval date?

MySQL has a field reg_addtime is the time value stored in the timestamp mode. May I ask how to inquire, for example, May 1, 2013, to May 10, 2013, registered membership list it. My side dish, a bottle discontent, half bottle wandering. Show me the hero. Reply to discussion (solution) SELECT * from Tbl_name WHERE from_unixtime (reg_addtime, '%y-%m-%d ') between ' 2013-05-01 ' and ' 2013-05-10 ' Yo

MySQL single-table multi-timestamp Set the default problem

=utf8 comment= ' second kill inventory table '; The reason is that when you set the timestamp to on Updatecurrent_timestamp, the other timestamp fields need to explicitly set the default valueBut if you have two timestamp fields, but only the first one is set to Current_timestamp and the second does not have a default value,

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