TO_START_OF_YEAR
Returns the first day of the year for a date or a date with time (timestamp/datetime).
Syntax
to_start_of_year( <expr> )
Arguments
| Arguments | Description | 
|---|---|
| <expr> | date/timestamp | 
Return Type
Datetime object, returns date in “YYYY-MM-DD” format.
Examples
SELECT to_start_of_year(to_date(18869));
+----------------------------------+
| to_start_of_year(to_date(18869)) |
+----------------------------------+
| 2021-01-01                       |
+----------------------------------+
SELECT to_start_of_year(to_timestamp(1630812366));
+--------------------------------------------+
| to_start_of_year(to_timestamp(1630812366)) |
+--------------------------------------------+
| 2021-01-01                                 |
+--------------------------------------------+