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toStartOfYear

Returns the first day of the year for a date or a date with time.

Syntax​

toStartOfYear(expr)

Return Type​

Datetime object, returns date in “YYYY-MM-DD” format.

Examples​

select toStartOfYear(toDate(18869));
+------------------------------+
| toStartOfYear(toDate(18869)) |
+------------------------------+
| 2021-01-01                   |
+------------------------------+

mysql> select toStartOfYear(toDateTime(1630812366));
+---------------------------------------+
| toStartOfYear(toDateTime(1630812366)) |
+---------------------------------------+
| 2021-01-01                            |
+---------------------------------------+