Date and Time Datatypes
There
are a few column datatypes for storing date and time values. They are
listed in Table A-3. The table also lists the
valid ranges for each datatype. If a value is inserted that is not
permitted, or is outside of the acceptable range for the datatype,
zeros are used instead. You can override this by starting the server
with --sql-mode='ALLOW_INVALID_DATES
‘. Starting in
Version 5.0.2 of MySQL, warnings will be generated when inserting
invalid dates or times. For dates that are inserted with only two
digits for the year, values from 00 to 69 are assumed to be in the
21st century. For years from 70 to 99,
they are assumed to be in the 20th
century.
Data type |
Format |
Range |
DATE |
|
1000-01-01 to 9999-12-31 |
DATETIME |
|
1000-01-01 00:00:00 to 9999-12-31 00:00:00 |
|
|
1970-01-01 00:00:00 to 2037-12-31 23:59:59 |
TIME |
|
-838:59:59 to 838:59:59 |
|
yy |
1970 |
Times values may be given as either a string, or numerically. As a
string, you may enter a value as d hh:mm:ss.f
. In
this format, d
stands for the number of days, with
an allowable range of 0 to 34. The f
stands for a fractional number of seconds. This value will not be stored, though. Storing fractional seconds is expected to be added in future releases of MySQL. You don’t have to specify values for all elements of a time. Instead, you can enter ...
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