MySQL Time type summary and common time function

Source: Internet
Author: User

Date Time and type

Common date and time types

Bytes

Year 1 represents the range of years values: (1901----2155)

Date 4 is the date of year and month, for example: 2018-03-09 value range: 1000-01-01 to 9999-12-31

Time 3 indicates a value range of seconds and minutes 835:59:59 838:59:59

Dateime 8 represents a combination of date and time, and seconds and minutes: 1000-01-01 00:00:00 9999-12-31 23:59:59

Timestamp 4 means days and seconds

Common time functions

Now () Returns the current date and time
Curdate () Returns the current date
Curtime () Returns the current time
DATE () Extract date part of date or date/time expression
EXTRACT () Returns a separate part of the date/time Press
Date_add () Add a specified time interval to a date
Date_sub () Subtract a specified time interval from a date
DATEDIFF () Returns the number of days between two dates
Date_format () Display Date/time in a different format

MySQL Time type summary and common time function

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