YEAR

Description

The YEAR function is used to extract the year part from different types of date expressions and return it as an integer.

Syntax

YEAR(expr)

Parameter Description

• expr: Can be different types of date expressions, including strings (date/string), time (time/timez), and timestamps (timestamp/timestamptz).

Return Type

Integer (int)

Usage Example

1. Extract the year from a date in string form:

SELECT YEAR('2022-03-31'); -- Result: 2022

2. Extract the year from a date in timestamp format:

SELECT YEAR(TIMESTAMP "2022-03-31 14:59:59"); -- Result: 2022

3. Extract the year from the current timestamp:

SELECT YEAR(now()); -- Result: Returns the year based on the current timestamp

Notes

• When the input date expression is of string type, please ensure it conforms to the date format supported by the database, otherwise it may cause parsing errors.
• When the input time expression only contains the time part, the YEAR function will return 0000 as the year.
• When using the YEAR function, please ensure the parameter type is correct to avoid type mismatch errors.