TO_START_OF_HOUR

Rounds down a date with time (timestamp/datetime) to the start of the hour.

Syntax

TO_START_OF_HOUR(<expr>)

Arguments

Arguments	Description
<expr>	timestamp

Return Type

TIMESTAMP, returns date in “YYYY-MM-DD hh:mm:ss.ffffff” format.

Examples

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

┌────────────────────────────────────────────────┐
│ to_start_of_hour('2023-11-12 09:38:18.165575') │
├────────────────────────────────────────────────┤
│ 2023-11-12 09:00:00                            │
└────────────────────────────────────────────────┘