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11.3.3 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 or YEAR(4) and has a display width of four characters.

Note

MySQL 8.0 does not support the YEAR(2) data type permitted in older versions of MySQL. For instructions on converting to YEAR(4), see YEAR(2) Limitations and Migrating to YEAR(4) in MySQL 5.7 Reference Manual.

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

You can specify input YEAR values in a variety of formats:

  • As a 4-digit number in the range 1901 to 2155.

  • As a 4-digit string in the range '1901' to '2155'.

  • As a 1- or 2-digit number in the range 1 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.

  • As a 1- or 2-digit string 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.

  • 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 a function that returns a value that is acceptable in a YEAR context, such as NOW().

MySQL converts invalid YEAR values to 0000.

See also Section 11.3.7, “Two-Digit Years in Dates”.


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Document created the 26/06/2006, last modified the 26/10/2018
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