TO_WEEK_OF_YEAR
Introduced or updated: v1.2.151
Calculates the week number within a year for a given date.
ISO week numbering works as follows: January 4th is always considered part of the first week. If January 1st is a Thursday, then the week that spans from Monday, December 29th, to Sunday, January 4th, is designated as ISO week 1. If January 1st falls on a Friday, then the week that goes from Monday, January 4th, to Sunday, January 10th, is marked as ISO week 1.
Syntax
TO_WEEK_OF_YEAR(<expr>)
Arguments
| Arguments | Description |
|---|---|
<expr> | date/timestamp |
Aliases
Return Type
Returns an integer that represents the week number within a year, with numbering ranging from 1 to 53.
Examples
SELECT NOW(), TO_WEEK_OF_YEAR(NOW()), WEEK(NOW()), WEEKOFYEAR(NOW());
┌───────────────────────────────────────────────────────────────────────────────────────┐
│ now() │ to_week_of_year(now()) │ week(now()) │ weekofyear(now()) │
├────────────────────────────┼────────────────────────┼─────────────┼───────────────────┤
│ 2024-03-14 23:30:04.011624 │ 11 │ 11 │ 11 │
└───────────────────────────────────────────────────────────────────────────────────────┘