TO_START_OF_WEEK

Returns the first day of the week for a date or a date with time (timestamp/datetime). The first day of a week can be Sunday or Monday, which is specified by the argument mode.

Syntax

TO_START_OF_WEEK(<expr> [, mode])

Arguments

Arguments	Description
<expr>	date/timestamp
[mode]	Optional. If it is 0, the result is Sunday, otherwise, the result is Monday. The default value is 0

Return Type

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

Examples

SELECT
  to_start_of_week('2023-11-12 09:38:18.165575')

┌────────────────────────────────────────────────┐
│ to_start_of_week('2023-11-12 09:38:18.165575') │
│                      Date                      │
├────────────────────────────────────────────────┤
│ 2023-11-12                                     │
└────────────────────────────────────────────────┘