### 11.2.4 The YEAR Type

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 The `YEAR` type is a 1-byte type used to represent year values. It can be declared as `YEAR` with an implicit display width of 4 characters, or equivalently as `YEAR(4)` with an explicit display width.

Note

 As of MySQL 8.0.19, the [`YEAR(4)`](year.html) data type with an explicit display width is deprecated and you should expect support for it to be removed in a future version of MySQL. Instead, use [`YEAR`](year.html) without a display width, which has the same meaning.

 MySQL 8.0 does not support the 2-digit [`YEAR(2)`](year.html) data type permitted in older versions of MySQL. For instructions on converting to 4-digit [`YEAR`](year.html), see [2-Digit YEAR(2) Limitations and Migrating to 4-Digit YEAR](https://dev.mysql.com/doc/refman/5.7/en/migrating-from-year2.html), in [MySQL 5.7 Reference Manual](https://dev.mysql.com/doc/refman/5.7/en/).

 MySQL displays `YEAR` values in *`YYYY`* format, with a range of `1901` to `2155`, and `0000`.

`YEAR` accepts input values in a variety of formats:

* As 4-digit strings in the range `'1901'` to `'2155'`.

* As 4-digit numbers in the range `1901` to `2155`.

* As 1- or 2-digit strings in the range `'0'` to `'99'`. MySQL converts values in the ranges `'0'` to `'69'` and `'70'` to `'99'` to `YEAR` values in the ranges `2000` to `2069` and `1970` to `1999`.

* As 1- or 2-digit numbers in the range `0` to `99`. MySQL converts values in the ranges `1` to `69` and `70` to `99` to `YEAR` values in the ranges `2001` to `2069` and `1970` to `1999`.

   The result of inserting a numeric `0` has a display value of `0000` and an internal value of `0000`. To insert zero and have it be interpreted as `2000`, specify it as a string `'0'` or `'00'`.

* As the result of functions that return a value that is acceptable in `YEAR` context, such as [`NOW()`](date-and-time-functions.html#function_now).

 If strict SQL mode is not enabled, MySQL converts invalid `YEAR` values to `0000`. In strict SQL mode, attempting to insert an invalid `YEAR` value produces an error.

 See also [Section 11.2.8, “2-Digit Years in Dates”](two-digit-years.html).

