SQL Server timestamp timestampIn SQL Server Books Online, it says:The SQL Server timestamp data type is independent of time and date. SQL Server Timestamp is a binary number that indicates the relative order in which data modifications occur in the
MySQL obtains the current date and time stamp function bitsCN.com
MySQL returns the current date, time, and timestamp.
1.1 obtain the current date + time (date + time) function: now ()
Mysql> select now ();
+ ------- +
| Now () |
+ ------- +
| 22:2
Introduction to timestamp basic knowledge
Variant of the timestamp1,timestamp DEFAULT current_timestamp on UPDATE current_timestamp refreshes this data column when new records are created and existing records are modified
2,timestamp default
Variants of the timestamp 1,timestamp DEFAULT current_timestamp on UPDATE current_timestampRefreshes the data column when new records are created and existing records are modified 2,timestamp DEFAULT Current_timestamp This when creating a new
1.1 Get the current date + time (date + times) function: Now ()Mysql> Select Now (); + ——————— + | Now () | + ——————— + | 2013-04-08 20:56:19 | + ——————— +In addition to the now () function to get the current datetime, MySQL has the following
Mysql TIMESTAMP Usage Details, mysqltimestamp
1. TIMESTAMP variants
TIMESTAMP timestamps can have multiple different features during creation, such:
1. Refresh the data column when creating a new record or modifying an existing record:
TIMESTAMP
A variant of the timestamp
The timestamp timestamp can have multiple different characteristics when it is created, such as:
1. Refresh the data column when creating a new record and modifying an existing record:
TIMESTAMP DEFAULT
The difference between DATETIME, DATE, and TIMESTAMP in mysql is that the DATETIME, DATE, and TIMESTAMP types are similar. This article describes their characteristics and their similarities and differences. The DATETIME type can be used for values
The difference between a date datetime timestamp in a transfer databaseDATETIME, date, and timestamp types are related. This article describes their characteristics, how they are similar and different.A datetime type is used when you need a value
MysqlTIMESTAMP (timestamp) details bitsCN.com
TIMESTAMP variant1. timestamp default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP refresh this data column when creating a new record and modifying an existing record2, timestamp default
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