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week

week​

Description​

Syntax​

INT WEEK(DATE date[, INT mode])

Returns the week number for date.The value of the mode argument defaults to 0. The following table describes how the mode argument works.

ModeFirst day of weekRangeWeek 1 is the first week …
0Sunday0-53with a Sunday in this year
1Monday0-53with 4 or more days this year
2Sunday1-53with a Sunday in this year
3Monday1-53with 4 or more days this year
4Sunday0-53with 4 or more days this year
5Monday0-53with a Monday in this year
6Sunday1-53with 4 or more days this year
7Monday1-53with a Monday in this year

The parameter is Date or Datetime type

example​

mysql> select week('2020-1-1');
+------------------+
| week('2020-1-1') |
+------------------+
| 0 |
+------------------+
mysql> select week('2020-7-1',1);
+---------------------+
| week('2020-7-1', 1) |
+---------------------+
| 27 |
+---------------------+

keywords​

WEEK