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New database features are no longer connected to engine versions; features are now enabled independently during scheduled update windows, and “major” and “minor” releases no longer exist in Helios. Please visit the release notes to view the latest features available in your database clusters.
WEEK
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The WEEK() function extracts the week number
from the given datetime.
There are eight ways to number weeks, described below.
Syntax
WEEK ( dateobj, [mode] )
WEEKOFYEAR ( dateobj )Arguments
-
dateobj: a valid date, datetime, or parsable date string.
-
mode: a number from 0 to 7, corresponding to the mode desired.
|
Mode |
Description |
Counting from |
|---|---|---|
|
0 |
Week (0 to 53) starting Sunday |
First week with a Sunday |
|
1 |
Week (0 to 53) starting Monday |
First week with 4+ days |
|
2 |
Week (1 to 53) starting Sunday |
First week with a Sunday |
|
3 |
Week (1 to 53) starting Monday |
First week with 4+ days |
|
4 |
Week (0 to 53) starting Sunday |
First week with 4+ days |
|
5 |
Week (0 to 53) starting Monday |
First week with a Monday |
|
6 |
Week (1 to 53) starting Sunday |
First week with 4+ days |
|
7 |
Week (1 to 53) starting Monday |
First week with a Monday |
Important
WEEKOFYEAR (date) is equivalent to WEEK(date, 3).
Return Type
Integer
Examples
SELECT WEEK('2009-02-13 23:31:30', 7);
+--------------------------------+
| WEEK('2009-02-13 23:31:30', 7) |
+--------------------------------+
| 6 |
+--------------------------------+Related Topics
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