mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 10:02:01 +00:00
56 lines
2.2 KiB
SQL
56 lines
2.2 KiB
SQL
-- month with 30 days
|
|
WITH
|
|
toDate('2021-09-12') AS date_value,
|
|
toDateTime('2021-09-12 11:22:33') AS date_time_value,
|
|
toDateTime64('2021-09-12 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value);
|
|
|
|
-- month with 31 days
|
|
WITH
|
|
toDate('2021-03-12') AS date_value,
|
|
toDateTime('2021-03-12 11:22:33') AS date_time_value,
|
|
toDateTime64('2021-03-12 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value);
|
|
|
|
-- non leap year February
|
|
WITH
|
|
toDate('2021-02-12') AS date_value,
|
|
toDateTime('2021-02-12 11:22:33') AS date_time_value,
|
|
toDateTime64('2021-02-12 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value);
|
|
|
|
-- leap year February
|
|
WITH
|
|
toDate('2020-02-12') AS date_value,
|
|
toDateTime('2020-02-12 11:22:33') AS date_time_value,
|
|
toDateTime64('2020-02-12 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value);
|
|
|
|
-- December 31 for non-leap year
|
|
WITH
|
|
toDate('2021-12-12') AS date_value,
|
|
toDateTime('2021-12-12 11:22:33') AS date_time_value,
|
|
toDateTime64('2021-12-12 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value);
|
|
|
|
-- December 31 for leap year
|
|
WITH
|
|
toDate('2020-12-12') AS date_value,
|
|
toDateTime('2020-12-12 11:22:33') AS date_time_value,
|
|
toDateTime64('2020-12-12 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value);
|
|
|
|
-- aliases
|
|
WITH
|
|
toDate('2020-12-12') AS date_value
|
|
SELECT last_day(date_value), LAST_DAY(date_value);
|
|
|
|
-- boundaries
|
|
WITH
|
|
toDate('1970-01-01') AS date_value,
|
|
toDateTime('1970-01-01 11:22:33') AS date_time_value,
|
|
toDateTime64('1900-01-01 11:22:33', 3) AS date_time_64_value
|
|
SELECT toLastDayOfMonth(date_value), toLastDayOfMonth(date_time_value), toLastDayOfMonth(date_time_64_value)
|
|
SETTINGS enable_extended_results_for_datetime_functions = true;
|
|
|