YEAR

>>-YEAR--(--expression--)--------------------------------------><
The YEAR function returns the year part of a value.
- expression
- The argument must be an expression that returns a value of one of the
following built-in data types: a date, a timestamp, a character string, a
graphic string, or a numeric data type.
- If expression is a character or graphic string, it must not be
a CLOB or DBCLOB and its value must be a valid string representation of a
date or timestamp. For the valid formats of string representations of dates
and timestamps, see String representations of datetime values.
- If expression is a number, it must be a date duration or timestamp
duration. For the valid formats of datetime durations, see Datetime operands and durations.
The result of the function is a large integer. If the argument can be null,
the result can be null; if the argument is null, the result is the null value.
The other rules depend on the data type of the argument:
- If the argument is a date or a timestamp or a valid character-string representation
of a date or timestamp:
The result is the year part of the value, which
is an integer between 1 and 9999.
- If the argument is a date duration or timestamp duration:
The result
is the year part of the value, which is an integer between -9999 and
9999. A nonzero result has the same sign as the argument.
Examples
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