本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。
日期和時間函數
注意
若要查看哪些 AWS 資料來源整合支援此SQL命令，請參閱 支援的 OpenSearch SQL命令和函數。
| 函式 | 描述 |
|---|---|
| add_months(start_date、num_months) | 傳回 num_months之後的日期start_date。 |
| convert_timezone(【sourceTz， 】targetTz， sourceTs) | 將不含時區的時間戳記sourceTs從sourceTz時區轉換為 targetTz。 |
| curdate() | 傳回查詢評估開始時的目前日期。相同查詢內的所有 curdate 呼叫都會傳回相同的值。 |
| current_date() | 傳回查詢評估開始時的目前日期。相同查詢中 current_date 的所有呼叫都會傳回相同的值。 |
| current_date | 傳回查詢評估開始時的目前日期。 |
| current_timestamp() | 傳回查詢評估開始時的目前時間戳記。相同查詢內所有對 current_timestamp 的呼叫都會傳回相同的值。 |
| current_timestamp | 傳回查詢評估開始時的目前時間戳記。 |
| current_timezone() | 傳回目前的工作階段本機時區。 |
| date_add(start_date， num_days) | 傳回 num_days之後的日期start_date。 |
| date_diff(endDate，startDate) | 傳回從 startDate到 的天數endDate。 |
| date_format（時間戳記、fmt) | timestamp 轉換為日期格式 所指定格式的字串值fmt。 |
| date_from_unix_date（天） | 從 1970-01-01 開始的天數建立日期。 |
| date_part（欄位，來源） | 擷取日期/時間戳記或間隔來源的一部分。 |
| date_sub(start_date， num_days) | 傳回num_days早於 的日期start_date。 |
| date_trunc(fmt， ts) | 傳回截斷為格式模型 ts 所指定單位的時間戳記fmt。 |
| dateadd(start_date， num_days) | 傳回 num_days之後的日期start_date。 |
| datediff(endDate，startDate) | 傳回從 startDate到 的天數endDate。 |
| datepart（欄位、來源） | 擷取日期/時間戳記或間隔來源的一部分。 |
| day（日期） | 傳回日期/時間戳記的月份日期。 |
| dayofmonth（日期） | 傳回日期/時間戳記的月份日期。 |
| dayofweek（日期） | 傳回日期/時間戳記的星期幾 (1 = 星期日，2 = 星期一，...，7 = 星期六）。 |
| dayofyear（日期） | 傳回日期/時間戳記的年份日期。 |
| extract（欄位FROM來源） | 擷取日期/時間戳記或間隔來源的一部分。 |
| from_unixtime(unix_time【， fmt】) | 在指定的 unix_time中傳回 fmt。 |
| from_utc_timestamp（時間戳記，時區） | 假設時間戳記如 '2017-07-14 02：40：00.0'， 會在 中將其解譯為時間UTC，並在指定時區中將該時間轉譯為時間戳記。例如，'GMT+1' 會產生 '2017-07-14 03：40：00.0'。 |
| hour（時間戳記） | 傳回字串/時間戳記的小時元件。 |
| last_day（日期） | 傳回日期所屬月份的最後一天。 |
| localtimestamp() | 在查詢評估開始時，傳回不含時區的目前時間戳記。相同查詢內所有本機時間戳記的呼叫都會傳回相同的值。 |
| localtimestamp | 在查詢評估開始時，傳回工作階段時區的目前本機日期時間。 |
| make_date（年、月、日） | 建立年份、月份和日期欄位的日期。 |
| make_dt_interval(【days【， hours【， mins【， secs】】】】) | 從天、小時、分鐘和秒開始 DayTimeIntervalType 計算持續時間。 |
| make_interval(【years【， months【， weeks【， days【， hours【， mins【， secs】】】】】】】】) | 從年、月、週、日、小時、分鐘和秒間隔。 |
| make_timestamp（年、月、日、小時、分鐘、秒【、時區】) | 從年、月、日、小時、分鐘、秒和時區欄位建立時間戳記。 |
| make_timestamp_ltz（年、月、日、小時、分鐘、秒 【、時區】) | 建立目前時間戳記，其中包含從年、月、日、小時、分鐘、秒和時區欄位開始的當地時區。 |
| make_timestamp_ntz（年、月、日、小時、分鐘、秒） | 從年、月、日、小時、分鐘、秒欄位建立本機日期時間。 |
| make_ym_interval(【years【， months】】) | 以年、月為間隔。 |
| minute（時間戳記） | 傳回字串/時間戳記的分鐘元件。 |
| month(date) | 傳回日期/時間戳記的月份元件。 |
| months_between(timestamp1、timestamp2【、roundOff】) | 如果 timestamp1 晚於 timestamp2，則結果為陽性。如果 timestamp1和 timestamp2 位於當月的同一天，或兩者都是當月的最後一天，則會忽略時間。否則，差異會根據每月 31 天計算，然後四捨五入到 8 位數，除非 roundOff=false。 |
| next_day(start_date， day_of_week) | 傳回第一個晚於 start_date且依指示命名的日期。NULL 如果至少一個輸入參數是 ，則函數會傳回 NULL。 |
| now() | 傳回查詢評估開始時的目前時間戳記。 |
| quarter（日期） | 傳回日期的年份季度，範圍為 1 到 4。 |
| second（時間戳記） | 傳回字串/時間戳記的第二個元件。 |
| session_window(time_column， gap_duration) | 產生工作階段視窗，並指定指定資料欄和間隙持續時間的時間戳記。如需詳細說明和範例，請參閱結構化串流指南文件中的「時段類型」。 |
| timestamp_micros（微秒） | 從 epoch UTC 後的微秒數建立時間戳記。 |
| timestamp_millis（毫秒） | 從 epoch UTC 後的毫秒數建立時間戳記。 |
| timestamp_seconds（秒） | 從 epoch 後的秒數 （可以是分數） UTC 建立時間戳記。 |
| to_date(date_str【， fmt】) | 將date_str表達式與fmt表達式剖析為日期。傳回具有無效輸入的 null。依預設，如果省略 fmt ，它會遵循轉換規則至日期。 |
| to_timestamp(timestamp_str【， fmt】) | 將timestamp_str表達式與fmt表達式剖析為時間戳記。傳回具有無效輸入的 null。根據預設，如果fmt省略 ，它會遵循將規則轉換為時間戳記。 |
| to_timestamp_ltz(timestamp_str【， fmt】) | 將timestamp_str表達式與fmt表達式剖析為具有本機時區的時間戳記。傳回具有無效輸入的 null。根據預設，如果fmt省略 ，它會遵循將規則轉換為時間戳記。 |
| to_timestamp_ntz(timestamp_str【， fmt】) | 將timestamp_str具有表達式的fmt表達式剖析為不含時區的時間戳記。傳回具有無效輸入的 null。根據預設，如果fmt省略 ，它會遵循將規則轉換為時間戳記。 |
| to_unix_timestamp(timeExp【， fmt】) | 傳回指定時間的UNIX時間戳記。 |
| to_utc_timestamp（時間戳記，時區） | 假設時間戳記如 '2017-07-14 02：40：00.0'， 會在指定時區將其解譯為時間，並在 中將該時間轉譯為時間戳記UTC。例如，'GMT+1' 會產生 '2017-07-14 01：40：00.0'。 |
| trunc(date， fmt) | 傳回 ，date並將一天的時間部分截斷為格式模型 指定的單位fmt。 |
| try_to_timestamp(timestamp_str【， fmt】) | 將timestamp_str表達式與fmt表達式剖析為時間戳記。 |
| unix_date(date) | 傳回自 1970-01-01 以來的天數。 |
| unix_micros（時間戳記） | 傳回自 1970-01-01 00：00：00 以來的微秒數UTC。 |
| unix_millis（時間戳記） | 傳回自 1970-01-01 00：00：00 以來的毫秒數UTC。降低更高的精確度。 |
| unix_seconds（時間戳記） | 傳回自 1970-01-01 00：00：00 以來的秒數UTC。降低更高的精確度。 |
| unix_timestamp(【timeExp【， fmt】】) | 傳回目前或指定時間的UNIX時間戳記。 |
| weekday（日期） | 傳回日期/時間戳記的星期幾 (0 = 星期一，1 = 星期二，...，6 = 星期日）。 |
| weekofyear（日期） | 傳回指定日期當年的一週。一週被視為從星期一開始，而第 1 週是 >3 天的第一週。 |
| window(time_column， window_duration【， slide_duration【， start_time】】) | 指定時間戳記欄時，將資料列儲存到一或多個時段。視窗開始包含 ，但視窗結束是排他性的，例如 12：05 將位於視窗 【12：05，12：10) 中，但不會位於 【12：00，12：05) 中。Windows 可支援微秒精確度。不支援按月順序排列的 Windows。如需詳細說明和範例，請參閱 結構化串流指南文件中的「事件時間視窗操作」。 |
| window_time(window_column) | 從時間/工作階段視窗資料欄擷取時間值，可用於視窗的事件時間值。擷取的時間是 (window.end - 1)，反映彙總視窗具有專屬上限 - 【開始、結束） 的事實。如需詳細說明和範例，請參閱結構化串流指南文件中的「事件時間視窗操作」。 |
| year（日期） | 傳回日期/時間戳記的年份元件。 |
範例
-- add_months SELECT add_months('2016-08-31', 1); +-------------------------+ |add_months(2016-08-31, 1)| +-------------------------+ | 2016-09-30| +-------------------------+ -- convert_timezone SELECT convert_timezone('Europe/Brussels', 'America/Los_Angeles', timestamp_ntz'2021-12-06 00:00:00'); +-------------------------------------------------------------------------------------------+ |convert_timezone(Europe/Brussels, America/Los_Angeles, TIMESTAMP_NTZ '2021-12-06 00:00:00')| +-------------------------------------------------------------------------------------------+ | 2021-12-05 15:00:00| +-------------------------------------------------------------------------------------------+ SELECT convert_timezone('Europe/Brussels', timestamp_ntz'2021-12-05 15:00:00'); +------------------------------------------------------------------------------------------+ |convert_timezone(current_timezone(), Europe/Brussels, TIMESTAMP_NTZ '2021-12-05 15:00:00')| +------------------------------------------------------------------------------------------+ | 2021-12-05 07:00:00| +------------------------------------------------------------------------------------------+ -- curdate SELECT curdate(); +--------------+ |current_date()| +--------------+ | 2024-02-24| +--------------+ -- current_date SELECT current_date(); +--------------+ |current_date()| +--------------+ | 2024-02-24| +--------------+ SELECT current_date; +--------------+ |current_date()| +--------------+ | 2024-02-24| +--------------+ -- current_timestamp SELECT current_timestamp(); +--------------------+ | current_timestamp()| +--------------------+ |2024-02-24 16:36:...| +--------------------+ SELECT current_timestamp; +--------------------+ | current_timestamp()| +--------------------+ |2024-02-24 16:36:...| +--------------------+ -- current_timezone SELECT current_timezone(); +------------------+ |current_timezone()| +------------------+ | Asia/Seoul| +------------------+ -- date_add SELECT date_add('2016-07-30', 1); +-----------------------+ |date_add(2016-07-30, 1)| +-----------------------+ | 2016-07-31| +-----------------------+ -- date_diff SELECT date_diff('2009-07-31', '2009-07-30'); +---------------------------------+ |date_diff(2009-07-31, 2009-07-30)| +---------------------------------+ | 1| +---------------------------------+ SELECT date_diff('2009-07-30', '2009-07-31'); +---------------------------------+ |date_diff(2009-07-30, 2009-07-31)| +---------------------------------+ | -1| +---------------------------------+ -- date_format SELECT date_format('2016-04-08', 'y'); +--------------------------+ |date_format(2016-04-08, y)| +--------------------------+ | 2016| +--------------------------+ -- date_from_unix_date SELECT date_from_unix_date(1); +----------------------+ |date_from_unix_date(1)| +----------------------+ | 1970-01-02| +----------------------+ -- date_part SELECT date_part('YEAR', TIMESTAMP '2019-08-12 01:00:00.123456'); +-------------------------------------------------------+ |date_part(YEAR, TIMESTAMP '2019-08-12 01:00:00.123456')| +-------------------------------------------------------+ | 2019| +-------------------------------------------------------+ SELECT date_part('week', timestamp'2019-08-12 01:00:00.123456'); +-------------------------------------------------------+ |date_part(week, TIMESTAMP '2019-08-12 01:00:00.123456')| +-------------------------------------------------------+ | 33| +-------------------------------------------------------+ SELECT date_part('doy', DATE'2019-08-12'); +---------------------------------+ |date_part(doy, DATE '2019-08-12')| +---------------------------------+ | 224| +---------------------------------+ SELECT date_part('SECONDS', timestamp'2019-10-01 00:00:01.000001'); +----------------------------------------------------------+ |date_part(SECONDS, TIMESTAMP '2019-10-01 00:00:01.000001')| +----------------------------------------------------------+ | 1.000001| +----------------------------------------------------------+ SELECT date_part('days', interval 5 days 3 hours 7 minutes); +-------------------------------------------------+ |date_part(days, INTERVAL '5 03:07' DAY TO MINUTE)| +-------------------------------------------------+ | 5| +-------------------------------------------------+ SELECT date_part('seconds', interval 5 hours 30 seconds 1 milliseconds 1 microseconds); +-------------------------------------------------------------+ |date_part(seconds, INTERVAL '05:00:30.001001' HOUR TO SECOND)| +-------------------------------------------------------------+ | 30.001001| +-------------------------------------------------------------+ SELECT date_part('MONTH', INTERVAL '2021-11' YEAR TO MONTH); +--------------------------------------------------+ |date_part(MONTH, INTERVAL '2021-11' YEAR TO MONTH)| +--------------------------------------------------+ | 11| +--------------------------------------------------+ SELECT date_part('MINUTE', INTERVAL '123 23:55:59.002001' DAY TO SECOND); +---------------------------------------------------------------+ |date_part(MINUTE, INTERVAL '123 23:55:59.002001' DAY TO SECOND)| +---------------------------------------------------------------+ | 55| +---------------------------------------------------------------+ -- date_sub SELECT date_sub('2016-07-30', 1); +-----------------------+ |date_sub(2016-07-30, 1)| +-----------------------+ | 2016-07-29| +-----------------------+ -- date_trunc SELECT date_trunc('YEAR', '2015-03-05T09:32:05.359'); +-----------------------------------------+ |date_trunc(YEAR, 2015-03-05T09:32:05.359)| +-----------------------------------------+ | 2015-01-01 00:00:00| +-----------------------------------------+ SELECT date_trunc('MM', '2015-03-05T09:32:05.359'); +---------------------------------------+ |date_trunc(MM, 2015-03-05T09:32:05.359)| +---------------------------------------+ | 2015-03-01 00:00:00| +---------------------------------------+ SELECT date_trunc('DD', '2015-03-05T09:32:05.359'); +---------------------------------------+ |date_trunc(DD, 2015-03-05T09:32:05.359)| +---------------------------------------+ | 2015-03-05 00:00:00| +---------------------------------------+ SELECT date_trunc('HOUR', '2015-03-05T09:32:05.359'); +-----------------------------------------+ |date_trunc(HOUR, 2015-03-05T09:32:05.359)| +-----------------------------------------+ | 2015-03-05 09:00:00| +-----------------------------------------+ SELECT date_trunc('MILLISECOND', '2015-03-05T09:32:05.123456'); +---------------------------------------------------+ |date_trunc(MILLISECOND, 2015-03-05T09:32:05.123456)| +---------------------------------------------------+ | 2015-03-05 09:32:...| +---------------------------------------------------+ -- dateadd SELECT dateadd('2016-07-30', 1); +-----------------------+ |date_add(2016-07-30, 1)| +-----------------------+ | 2016-07-31| +-----------------------+ -- datediff SELECT datediff('2009-07-31', '2009-07-30'); +--------------------------------+ |datediff(2009-07-31, 2009-07-30)| +--------------------------------+ | 1| +--------------------------------+ SELECT datediff('2009-07-30', '2009-07-31'); +--------------------------------+ |datediff(2009-07-30, 2009-07-31)| +--------------------------------+ | -1| +--------------------------------+ -- datepart SELECT datepart('YEAR', TIMESTAMP '2019-08-12 01:00:00.123456'); +----------------------------------------------------------+ |datepart(YEAR FROM TIMESTAMP '2019-08-12 01:00:00.123456')| +----------------------------------------------------------+ | 2019| +----------------------------------------------------------+ SELECT datepart('week', timestamp'2019-08-12 01:00:00.123456'); +----------------------------------------------------------+ |datepart(week FROM TIMESTAMP '2019-08-12 01:00:00.123456')| +----------------------------------------------------------+ | 33| +----------------------------------------------------------+ SELECT datepart('doy', DATE'2019-08-12'); +------------------------------------+ |datepart(doy FROM DATE '2019-08-12')| +------------------------------------+ | 224| +------------------------------------+ SELECT datepart('SECONDS', timestamp'2019-10-01 00:00:01.000001'); +-------------------------------------------------------------+ |datepart(SECONDS FROM TIMESTAMP '2019-10-01 00:00:01.000001')| +-------------------------------------------------------------+ | 1.000001| +-------------------------------------------------------------+ SELECT datepart('days', interval 5 days 3 hours 7 minutes); +----------------------------------------------------+ |datepart(days FROM INTERVAL '5 03:07' DAY TO MINUTE)| +----------------------------------------------------+ | 5| +----------------------------------------------------+ SELECT datepart('seconds', interval 5 hours 30 seconds 1 milliseconds 1 microseconds); +----------------------------------------------------------------+ |datepart(seconds FROM INTERVAL '05:00:30.001001' HOUR TO SECOND)| +----------------------------------------------------------------+ | 30.001001| +----------------------------------------------------------------+ SELECT datepart('MONTH', INTERVAL '2021-11' YEAR TO MONTH); +-----------------------------------------------------+ |datepart(MONTH FROM INTERVAL '2021-11' YEAR TO MONTH)| +-----------------------------------------------------+ | 11| +-----------------------------------------------------+ SELECT datepart('MINUTE', INTERVAL '123 23:55:59.002001' DAY TO SECOND); +------------------------------------------------------------------+ |datepart(MINUTE FROM INTERVAL '123 23:55:59.002001' DAY TO SECOND)| +------------------------------------------------------------------+ | 55| +------------------------------------------------------------------+ -- day SELECT day('2009-07-30'); +---------------+ |day(2009-07-30)| +---------------+ | 30| +---------------+ -- dayofmonth SELECT dayofmonth('2009-07-30'); +----------------------+ |dayofmonth(2009-07-30)| +----------------------+ | 30| +----------------------+ -- dayofweek SELECT dayofweek('2009-07-30'); +---------------------+ |dayofweek(2009-07-30)| +---------------------+ | 5| +---------------------+ -- dayofyear SELECT dayofyear('2016-04-09'); +---------------------+ |dayofyear(2016-04-09)| +---------------------+ | 100| +---------------------+ -- extract SELECT extract(YEAR FROM TIMESTAMP '2019-08-12 01:00:00.123456'); +---------------------------------------------------------+ |extract(YEAR FROM TIMESTAMP '2019-08-12 01:00:00.123456')| +---------------------------------------------------------+ | 2019| +---------------------------------------------------------+ SELECT extract(week FROM timestamp'2019-08-12 01:00:00.123456'); +---------------------------------------------------------+ |extract(week FROM TIMESTAMP '2019-08-12 01:00:00.123456')| +---------------------------------------------------------+ | 33| +---------------------------------------------------------+ SELECT extract(doy FROM DATE'2019-08-12'); +-----------------------------------+ |extract(doy FROM DATE '2019-08-12')| +-----------------------------------+ | 224| +-----------------------------------+ SELECT extract(SECONDS FROM timestamp'2019-10-01 00:00:01.000001'); +------------------------------------------------------------+ |extract(SECONDS FROM TIMESTAMP '2019-10-01 00:00:01.000001')| +------------------------------------------------------------+ | 1.000001| +------------------------------------------------------------+ SELECT extract(days FROM interval 5 days 3 hours 7 minutes); +---------------------------------------------------+ |extract(days FROM INTERVAL '5 03:07' DAY TO MINUTE)| +---------------------------------------------------+ | 5| +---------------------------------------------------+ SELECT extract(seconds FROM interval 5 hours 30 seconds 1 milliseconds 1 microseconds); +---------------------------------------------------------------+ |extract(seconds FROM INTERVAL '05:00:30.001001' HOUR TO SECOND)| +---------------------------------------------------------------+ | 30.001001| +---------------------------------------------------------------+ SELECT extract(MONTH FROM INTERVAL '2021-11' YEAR TO MONTH); +----------------------------------------------------+ |extract(MONTH FROM INTERVAL '2021-11' YEAR TO MONTH)| +----------------------------------------------------+ | 11| +----------------------------------------------------+ SELECT extract(MINUTE FROM INTERVAL '123 23:55:59.002001' DAY TO SECOND); +-----------------------------------------------------------------+ |extract(MINUTE FROM INTERVAL '123 23:55:59.002001' DAY TO SECOND)| +-----------------------------------------------------------------+ | 55| +-----------------------------------------------------------------+ -- from_unixtime SELECT from_unixtime(0, 'yyyy-MM-dd HH:mm:ss'); +-------------------------------------+ |from_unixtime(0, yyyy-MM-dd HH:mm:ss)| +-------------------------------------+ | 1970-01-01 09:00:00| +-------------------------------------+ SELECT from_unixtime(0); +-------------------------------------+ |from_unixtime(0, yyyy-MM-dd HH:mm:ss)| +-------------------------------------+ | 1970-01-01 09:00:00| +-------------------------------------+ -- from_utc_timestamp SELECT from_utc_timestamp('2016-08-31', 'Asia/Seoul'); +------------------------------------------+ |from_utc_timestamp(2016-08-31, Asia/Seoul)| +------------------------------------------+ | 2016-08-31 09:00:00| +------------------------------------------+ -- hour SELECT hour('2009-07-30 12:58:59'); +-------------------------+ |hour(2009-07-30 12:58:59)| +-------------------------+ | 12| +-------------------------+ -- last_day SELECT last_day('2009-01-12'); +--------------------+ |last_day(2009-01-12)| +--------------------+ | 2009-01-31| +--------------------+ -- localtimestamp SELECT localtimestamp(); +--------------------+ | localtimestamp()| +--------------------+ |2024-02-24 16:36:...| +--------------------+ -- make_date SELECT make_date(2013, 7, 15); +----------------------+ |make_date(2013, 7, 15)| +----------------------+ | 2013-07-15| +----------------------+ SELECT make_date(2019, 7, NULL); +------------------------+ |make_date(2019, 7, NULL)| +------------------------+ | NULL| +------------------------+ -- make_dt_interval SELECT make_dt_interval(1, 12, 30, 01.001001); +-------------------------------------+ |make_dt_interval(1, 12, 30, 1.001001)| +-------------------------------------+ | INTERVAL '1 12:30...| +-------------------------------------+ SELECT make_dt_interval(2); +-----------------------------------+ |make_dt_interval(2, 0, 0, 0.000000)| +-----------------------------------+ | INTERVAL '2 00:00...| +-----------------------------------+ SELECT make_dt_interval(100, null, 3); +----------------------------------------+ |make_dt_interval(100, NULL, 3, 0.000000)| +----------------------------------------+ | NULL| +----------------------------------------+ -- make_interval SELECT make_interval(100, 11, 1, 1, 12, 30, 01.001001); +----------------------------------------------+ |make_interval(100, 11, 1, 1, 12, 30, 1.001001)| +----------------------------------------------+ | 100 years 11 mont...| +----------------------------------------------+ SELECT make_interval(100, null, 3); +----------------------------------------------+ |make_interval(100, NULL, 3, 0, 0, 0, 0.000000)| +----------------------------------------------+ | NULL| +----------------------------------------------+ SELECT make_interval(0, 1, 0, 1, 0, 0, 100.000001); +-------------------------------------------+ |make_interval(0, 1, 0, 1, 0, 0, 100.000001)| +-------------------------------------------+ | 1 months 1 days 1...| +-------------------------------------------+ -- make_timestamp SELECT make_timestamp(2014, 12, 28, 6, 30, 45.887); +-------------------------------------------+ |make_timestamp(2014, 12, 28, 6, 30, 45.887)| +-------------------------------------------+ | 2014-12-28 06:30:...| +-------------------------------------------+ SELECT make_timestamp(2014, 12, 28, 6, 30, 45.887, 'CET'); +------------------------------------------------+ |make_timestamp(2014, 12, 28, 6, 30, 45.887, CET)| +------------------------------------------------+ | 2014-12-28 14:30:...| +------------------------------------------------+ SELECT make_timestamp(2019, 6, 30, 23, 59, 60); +---------------------------------------+ |make_timestamp(2019, 6, 30, 23, 59, 60)| +---------------------------------------+ | 2019-07-01 00:00:00| +---------------------------------------+ SELECT make_timestamp(2019, 6, 30, 23, 59, 1); +--------------------------------------+ |make_timestamp(2019, 6, 30, 23, 59, 1)| +--------------------------------------+ | 2019-06-30 23:59:01| +--------------------------------------+ SELECT make_timestamp(null, 7, 22, 15, 30, 0); +--------------------------------------+ |make_timestamp(NULL, 7, 22, 15, 30, 0)| +--------------------------------------+ | NULL| +--------------------------------------+ -- make_timestamp_ltz SELECT make_timestamp_ltz(2014, 12, 28, 6, 30, 45.887); +-----------------------------------------------+ |make_timestamp_ltz(2014, 12, 28, 6, 30, 45.887)| +-----------------------------------------------+ | 2014-12-28 06:30:...| +-----------------------------------------------+ SELECT make_timestamp_ltz(2014, 12, 28, 6, 30, 45.887, 'CET'); +----------------------------------------------------+ |make_timestamp_ltz(2014, 12, 28, 6, 30, 45.887, CET)| +----------------------------------------------------+ | 2014-12-28 14:30:...| +----------------------------------------------------+ SELECT make_timestamp_ltz(2019, 6, 30, 23, 59, 60); +-------------------------------------------+ |make_timestamp_ltz(2019, 6, 30, 23, 59, 60)| +-------------------------------------------+ | 2019-07-01 00:00:00| +-------------------------------------------+ SELECT make_timestamp_ltz(null, 7, 22, 15, 30, 0); +------------------------------------------+ |make_timestamp_ltz(NULL, 7, 22, 15, 30, 0)| +------------------------------------------+ | NULL| +------------------------------------------+ -- make_timestamp_ntz SELECT make_timestamp_ntz(2014, 12, 28, 6, 30, 45.887); +-----------------------------------------------+ |make_timestamp_ntz(2014, 12, 28, 6, 30, 45.887)| +-----------------------------------------------+ | 2014-12-28 06:30:...| +-----------------------------------------------+ SELECT make_timestamp_ntz(2019, 6, 30, 23, 59, 60); +-------------------------------------------+ |make_timestamp_ntz(2019, 6, 30, 23, 59, 60)| +-------------------------------------------+ | 2019-07-01 00:00:00| +-------------------------------------------+ SELECT make_timestamp_ntz(null, 7, 22, 15, 30, 0); +------------------------------------------+ |make_timestamp_ntz(NULL, 7, 22, 15, 30, 0)| +------------------------------------------+ | NULL| +------------------------------------------+ -- make_ym_interval SELECT make_ym_interval(1, 2); +----------------------+ |make_ym_interval(1, 2)| +----------------------+ | INTERVAL '1-2' YE...| +----------------------+ SELECT make_ym_interval(1, 0); +----------------------+ |make_ym_interval(1, 0)| +----------------------+ | INTERVAL '1-0' YE...| +----------------------+ SELECT make_ym_interval(-1, 1); +-----------------------+ |make_ym_interval(-1, 1)| +-----------------------+ | INTERVAL '-0-11' ...| +-----------------------+ SELECT make_ym_interval(2); +----------------------+ |make_ym_interval(2, 0)| +----------------------+ | INTERVAL '2-0' YE...| +----------------------+ -- minute SELECT minute('2009-07-30 12:58:59'); +---------------------------+ |minute(2009-07-30 12:58:59)| +---------------------------+ | 58| +---------------------------+ -- month SELECT month('2016-07-30'); +-----------------+ |month(2016-07-30)| +-----------------+ | 7| +-----------------+ -- months_between SELECT months_between('1997-02-28 10:30:00', '1996-10-30'); +-----------------------------------------------------+ |months_between(1997-02-28 10:30:00, 1996-10-30, true)| +-----------------------------------------------------+ | 3.94959677| +-----------------------------------------------------+ SELECT months_between('1997-02-28 10:30:00', '1996-10-30', false); +------------------------------------------------------+ |months_between(1997-02-28 10:30:00, 1996-10-30, false)| +------------------------------------------------------+ | 3.9495967741935485| +------------------------------------------------------+ -- next_day SELECT next_day('2015-01-14', 'TU'); +------------------------+ |next_day(2015-01-14, TU)| +------------------------+ | 2015-01-20| +------------------------+ -- now SELECT now(); +--------------------+ | now()| +--------------------+ |2024-02-24 16:36:...| +--------------------+ -- quarter SELECT quarter('2016-08-31'); +-------------------+ |quarter(2016-08-31)| +-------------------+ | 3| +-------------------+ -- second SELECT second('2009-07-30 12:58:59'); +---------------------------+ |second(2009-07-30 12:58:59)| +---------------------------+ | 59| +---------------------------+ -- session_window SELECT a, session_window.start, session_window.end, count(*) as cnt FROM VALUES ('A1', '2021-01-01 00:00:00'), ('A1', '2021-01-01 00:04:30'), ('A1', '2021-01-01 00:10:00'), ('A2', '2021-01-01 00:01:00') AS tab(a, b) GROUP by a, session_window(b, '5 minutes') ORDER BY a, start; +---+-------------------+-------------------+---+ | a| start| end|cnt| +---+-------------------+-------------------+---+ | A1|2021-01-01 00:00:00|2021-01-01 00:09:30| 2| | A1|2021-01-01 00:10:00|2021-01-01 00:15:00| 1| | A2|2021-01-01 00:01:00|2021-01-01 00:06:00| 1| +---+-------------------+-------------------+---+ SELECT a, session_window.start, session_window.end, count(*) as cnt FROM VALUES ('A1', '2021-01-01 00:00:00'), ('A1', '2021-01-01 00:04:30'), ('A1', '2021-01-01 00:10:00'), ('A2', '2021-01-01 00:01:00'), ('A2', '2021-01-01 00:04:30') AS tab(a, b) GROUP by a, session_window(b, CASE WHEN a = 'A1' THEN '5 minutes' WHEN a = 'A2' THEN '1 minute' ELSE '10 minutes' END) ORDER BY a, start; +---+-------------------+-------------------+---+ | a| start| end|cnt| +---+-------------------+-------------------+---+ | A1|2021-01-01 00:00:00|2021-01-01 00:09:30| 2| | A1|2021-01-01 00:10:00|2021-01-01 00:15:00| 1| | A2|2021-01-01 00:01:00|2021-01-01 00:02:00| 1| | A2|2021-01-01 00:04:30|2021-01-01 00:05:30| 1| +---+-------------------+-------------------+---+ -- timestamp_micros SELECT timestamp_micros(1230219000123123); +----------------------------------+ |timestamp_micros(1230219000123123)| +----------------------------------+ | 2008-12-26 00:30:...| +----------------------------------+ -- timestamp_millis SELECT timestamp_millis(1230219000123); +-------------------------------+ |timestamp_millis(1230219000123)| +-------------------------------+ | 2008-12-26 00:30:...| +-------------------------------+ -- timestamp_seconds SELECT timestamp_seconds(1230219000); +-----------------------------+ |timestamp_seconds(1230219000)| +-----------------------------+ | 2008-12-26 00:30:00| +-----------------------------+ SELECT timestamp_seconds(1230219000.123); +---------------------------------+ |timestamp_seconds(1230219000.123)| +---------------------------------+ | 2008-12-26 00:30:...| +---------------------------------+ -- to_date SELECT to_date('2009-07-30 04:17:52'); +----------------------------+ |to_date(2009-07-30 04:17:52)| +----------------------------+ | 2009-07-30| +----------------------------+ SELECT to_date('2016-12-31', 'yyyy-MM-dd'); +-------------------------------+ |to_date(2016-12-31, yyyy-MM-dd)| +-------------------------------+ | 2016-12-31| +-------------------------------+ -- to_timestamp SELECT to_timestamp('2016-12-31 00:12:00'); +---------------------------------+ |to_timestamp(2016-12-31 00:12:00)| +---------------------------------+ | 2016-12-31 00:12:00| +---------------------------------+ SELECT to_timestamp('2016-12-31', 'yyyy-MM-dd'); +------------------------------------+ |to_timestamp(2016-12-31, yyyy-MM-dd)| +------------------------------------+ | 2016-12-31 00:00:00| +------------------------------------+ -- to_timestamp_ltz SELECT to_timestamp_ltz('2016-12-31 00:12:00'); +-------------------------------------+ |to_timestamp_ltz(2016-12-31 00:12:00)| +-------------------------------------+ | 2016-12-31 00:12:00| +-------------------------------------+ SELECT to_timestamp_ltz('2016-12-31', 'yyyy-MM-dd'); +----------------------------------------+ |to_timestamp_ltz(2016-12-31, yyyy-MM-dd)| +----------------------------------------+ | 2016-12-31 00:00:00| +----------------------------------------+ -- to_timestamp_ntz SELECT to_timestamp_ntz('2016-12-31 00:12:00'); +-------------------------------------+ |to_timestamp_ntz(2016-12-31 00:12:00)| +-------------------------------------+ | 2016-12-31 00:12:00| +-------------------------------------+ SELECT to_timestamp_ntz('2016-12-31', 'yyyy-MM-dd'); +----------------------------------------+ |to_timestamp_ntz(2016-12-31, yyyy-MM-dd)| +----------------------------------------+ | 2016-12-31 00:00:00| +----------------------------------------+ -- to_unix_timestamp SELECT to_unix_timestamp('2016-04-08', 'yyyy-MM-dd'); +-----------------------------------------+ |to_unix_timestamp(2016-04-08, yyyy-MM-dd)| +-----------------------------------------+ | 1460041200| +-----------------------------------------+ -- to_utc_timestamp SELECT to_utc_timestamp('2016-08-31', 'Asia/Seoul'); +----------------------------------------+ |to_utc_timestamp(2016-08-31, Asia/Seoul)| +----------------------------------------+ | 2016-08-30 15:00:00| +----------------------------------------+ -- trunc SELECT trunc('2019-08-04', 'week'); +-----------------------+ |trunc(2019-08-04, week)| +-----------------------+ | 2019-07-29| +-----------------------+ SELECT trunc('2019-08-04', 'quarter'); +--------------------------+ |trunc(2019-08-04, quarter)| +--------------------------+ | 2019-07-01| +--------------------------+ SELECT trunc('2009-02-12', 'MM'); +---------------------+ |trunc(2009-02-12, MM)| +---------------------+ | 2009-02-01| +---------------------+ SELECT trunc('2015-10-27', 'YEAR'); +-----------------------+ |trunc(2015-10-27, YEAR)| +-----------------------+ | 2015-01-01| +-----------------------+ -- try_to_timestamp SELECT try_to_timestamp('2016-12-31 00:12:00'); +-------------------------------------+ |try_to_timestamp(2016-12-31 00:12:00)| +-------------------------------------+ | 2016-12-31 00:12:00| +-------------------------------------+ SELECT try_to_timestamp('2016-12-31', 'yyyy-MM-dd'); +----------------------------------------+ |try_to_timestamp(2016-12-31, yyyy-MM-dd)| +----------------------------------------+ | 2016-12-31 00:00:00| +----------------------------------------+ SELECT try_to_timestamp('foo', 'yyyy-MM-dd'); +---------------------------------+ |try_to_timestamp(foo, yyyy-MM-dd)| +---------------------------------+ | NULL| +---------------------------------+ -- unix_date SELECT unix_date(DATE("1970-01-02")); +---------------------+ |unix_date(1970-01-02)| +---------------------+ | 1| +---------------------+ -- unix_micros SELECT unix_micros(TIMESTAMP('1970-01-01 00:00:01Z')); +---------------------------------+ |unix_micros(1970-01-01 00:00:01Z)| +---------------------------------+ | 1000000| +---------------------------------+ -- unix_millis SELECT unix_millis(TIMESTAMP('1970-01-01 00:00:01Z')); +---------------------------------+ |unix_millis(1970-01-01 00:00:01Z)| +---------------------------------+ | 1000| +---------------------------------+ -- unix_seconds SELECT unix_seconds(TIMESTAMP('1970-01-01 00:00:01Z')); +----------------------------------+ |unix_seconds(1970-01-01 00:00:01Z)| +----------------------------------+ | 1| +----------------------------------+ -- unix_timestamp SELECT unix_timestamp(); +--------------------------------------------------------+ |unix_timestamp(current_timestamp(), yyyy-MM-dd HH:mm:ss)| +--------------------------------------------------------+ | 1708760216| +--------------------------------------------------------+ SELECT unix_timestamp('2016-04-08', 'yyyy-MM-dd'); +--------------------------------------+ |unix_timestamp(2016-04-08, yyyy-MM-dd)| +--------------------------------------+ | 1460041200| +--------------------------------------+ -- weekday SELECT weekday('2009-07-30'); +-------------------+ |weekday(2009-07-30)| +-------------------+ | 3| +-------------------+ -- weekofyear SELECT weekofyear('2008-02-20'); +----------------------+ |weekofyear(2008-02-20)| +----------------------+ | 8| +----------------------+ -- window SELECT a, window.start, window.end, count(*) as cnt FROM VALUES ('A1', '2021-01-01 00:00:00'), ('A1', '2021-01-01 00:04:30'), ('A1', '2021-01-01 00:06:00'), ('A2', '2021-01-01 00:01:00') AS tab(a, b) GROUP by a, window(b, '5 minutes') ORDER BY a, start; +---+-------------------+-------------------+---+ | a| start| end|cnt| +---+-------------------+-------------------+---+ | A1|2021-01-01 00:00:00|2021-01-01 00:05:00| 2| | A1|2021-01-01 00:05:00|2021-01-01 00:10:00| 1| | A2|2021-01-01 00:00:00|2021-01-01 00:05:00| 1| +---+-------------------+-------------------+---+ SELECT a, window.start, window.end, count(*) as cnt FROM VALUES ('A1', '2021-01-01 00:00:00'), ('A1', '2021-01-01 00:04:30'), ('A1', '2021-01-01 00:06:00'), ('A2', '2021-01-01 00:01:00') AS tab(a, b) GROUP by a, window(b, '10 minutes', '5 minutes') ORDER BY a, start; +---+-------------------+-------------------+---+ | a| start| end|cnt| +---+-------------------+-------------------+---+ | A1|2020-12-31 23:55:00|2021-01-01 00:05:00| 2| | A1|2021-01-01 00:00:00|2021-01-01 00:10:00| 3| | A1|2021-01-01 00:05:00|2021-01-01 00:15:00| 1| | A2|2020-12-31 23:55:00|2021-01-01 00:05:00| 1| | A2|2021-01-01 00:00:00|2021-01-01 00:10:00| 1| +---+-------------------+-------------------+---+ -- window_time SELECT a, window.start as start, window.end as end, window_time(window), cnt FROM (SELECT a, window, count(*) as cnt FROM VALUES ('A1', '2021-01-01 00:00:00'), ('A1', '2021-01-01 00:04:30'), ('A1', '2021-01-01 00:06:00'), ('A2', '2021-01-01 00:01:00') AS tab(a, b) GROUP by a, window(b, '5 minutes') ORDER BY a, window.start); +---+-------------------+-------------------+--------------------+---+ | a| start| end| window_time(window)|cnt| +---+-------------------+-------------------+--------------------+---+ | A1|2021-01-01 00:00:00|2021-01-01 00:05:00|2021-01-01 00:04:...| 2| | A1|2021-01-01 00:05:00|2021-01-01 00:10:00|2021-01-01 00:09:...| 1| | A2|2021-01-01 00:00:00|2021-01-01 00:05:00|2021-01-01 00:04:...| 1| +---+-------------------+-------------------+--------------------+---+ -- year SELECT year('2016-07-30'); +----------------+ |year(2016-07-30)| +----------------+ | 2016| +----------------+
