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
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
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
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
I. Variants of TIMESTAMPTimestamp timestamps can have multiple different features when created, such as:1. Refresh the data column when creating new records and modifying existing records:?
1
TIMESTAMPDEFAULT CURRENT_TIMESTAMP
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 DEFAULT CURRENT_TIMESTAMP ON UPDATE
Because of the recent international go to Oracle on MySQL, this inevitably involves time zone and timestamp issues. Do an experiment and summarize.OracleFirst look at the definition of Oracle Concepts for timestamp:The TIMESTAMP data type is an
Detailed timestamp column type details (how to set the default value of the column is now ())
MySQL does not currently support the form of column default as a function,
If the default value of one of your columns is the function of the current
One, string and Date (java.util.Date) interchange
1.1 String-> Date
String datestr = "//::";
Date date = new Date ();
Note format must match the format of date string
dateformat sdf = new SimpleDateFormat ("Yyyy/mm/dd
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