-- Example of the Function DATE_TRUNC (CAST/CONVERT and custom logic in SQL SERVER/ SQL Database) -- Aliasses TRUNC SELECT CURRENT_TIMESTAMP() AS T,. This is the date or timestamp expression to which you want to add a specified number of months. I'm running a query in snowflake to then export. The string must start with the first two characters (case-insensitive) of the day name:1. ) which lets you get the first day of the ISO week. BigQuery also supports DATETIME_TRUNC and TIMESTAMP_TRUNC functions to support truncation of more granular date/time types. In this blog, we will learn to group by time in Snowflake. date_or_time_expr は、日付、時刻、またはタイムスタンプに評価される必要があります。これは、追加する日付、時刻、またはタイムスタンプです。例えば2018年8月1日に、2日を追加する場合、これは '2018-08-01'::DATE になります。snowflake. In this tutorial you will create a data application and API that uses Snowflake as its. The function you need here is date_trunc (): -- returns number of. DAYOFWEEK. As per Snowflake documentation, for a small warehouse it is 0. For example, if you want to add 2 days, then the value is 2. For source_tz and target_tz, you can specify a time zone name or a. help_center_openedBelow is a list of Snowflake Date functions with parameters, description and a possible return value. snowpark. g. TO_TIMESTAMP. Snowflake Date and Time Data Types. For example:. Extracts the three-letter month name from the specified date or timestamp. as trip_count, date_trunc('DAY', starttime) as starttime from demo. My org is in the process of transitioning from Redshift to Snowflake and I would like to ask if there is a neater way of truncating a timestamp field to extract just the date out of it as I would do it in Redshift. Thank you for your response and. For example, if you want to add 2 days to August 1, 2018, then this will be '2018-08-01'::DATE. As an example: DATE_TRUNC ('MINUTE', '2015-05-08T23:39:35. Retorna 1 (primeiro dia definido da semana) a 7 (último dia da semana em relação ao primeiro dia definido). e. For example, adding three months or 12 days to a starting date. location ,v. 3 has two digits prior to the decimal point, but the data type NUMBER (3,2) has room for only one digit before the decimal point. Tronque un DATE, TIME ou TIMESTAMP à la précision spécifiée. And there's also DATE_EXTRACT(WEEK, . Syntax DATE_TRUNC( <date_or_time_part>, <date_or_time_expr> ) Returns The returned value is the same type as the input value. Follow. Instead you need to “truncate” your timestamp to the granularity you want, like minute, hour, day, week, etc. 2 seconds, whereas the un-optimized version from earlier took 750 seconds. date_trunc (part: Column | str, expr: Column | str) → Column [source] ¶ Truncates a DATE, TIME, or TIMESTAMP to the specified precision. Is that what you want?The function always returns a DATE. Answer. A summary of each function. date_or_time_expr. Thank you !! – Vasu. Answer. cast (CREATED_DT AS Date) it will returns you only date. How to convert UNIX epoch seconds to Timestamp in Snowflake? 0. select current_date as cd ,date_trunc ('month', cd) as end_range ,dateadd ('month', -1, end_range) as start_range ; the other half of the question only do it on the 5th, if you have a task run daily etc. The due amount can be paid later by some extension ( LAG ). Usage Notes¶. Selected as Best Selected as Best Like Liked Unlike. I need the count beginning midnight and another count starting. as trip_count, date_trunc('DAY', starttime) as starttime from demo. Part of AWS Collective. The problem is that you're applying date_trunc(week. In this tutorial, we have learned some good alternatives to the date_trunc function. Is there a simple way to return the last day of the most recent quarter in Snowflake? We use financial quarters with last days being: Jan. functions. 1. where trunc (date_1) = trunc (date_2)Arguments¶ source_expr. For decades, transactional and analytical data have remained separate, significantly limiting how fast organizations could evolve their businesses. Let’s say you. Usage Notes date_or_time_part must be one of the values listed in Supported Date and Time Parts. Possible values are year, quarter, month, or week (or any of their supported variations). 入力式を、ゼロに近い最も近い（または等しい）整数、または小数点以下の指定された桁数を持つ、最も近く等しいか小さい値に切り捨てます。. 4. This example uses TRUNC on a date to truncate it to a day. There is a simpler function here, DATE_TRUNC will allow you to convert dates to months. I am following the ELT framework for modeling data in a Snowflake warehouse. When it is enabled for a warehouse, it can improve overall warehouse performance by reducing the impact of outlier queries, which are queries that use more resources than the typical query. Year. TO_TIMESTAMP_NTZ. You don't need any conversion functions in SQL when. 3. 2 Answers. 2. This means that a day in one year might belong to a week in a different year: For days in early January, the WOY (week of the year) value can be 52 or 53 (i. table where address = 'xyz' group by :datebucket (date) Share. I'm not sure what your source data looks like, but if it has a DATE then you can derive all other attributes using DATE_PART. The default is the current value of the following session parameters: DATE_OUTPUT_FORMAT (for DATE inputs) TIME_OUTPUT_FORMAT (for TIME inputs) TIMESTAMP_OUTPUT_FORMAT (for TIMESTAMP inputs) For binary_expr, specifies the format in which to produce the string (e. Also, you have learned the difference between trunc() and date_trunc() functions. Make sure to define a column with the pivot_values, and a column with the pivot_columns: 2. Note that truncation is. This is the number of months you want to add. DATEADD () function is used to add the specified value for the specified date or time part to a date, time, or timestamp. snowpark. But the week starts on Monday in Postgres by default. Note that this is different from DROP TABLE, which removes the table from the. To remove the unwanted detail of a timestamp, feed it into the DATE_TRUNC() function. It requires parentheses ( SYSDATE () ), whereas CURRENT_TIMESTAMP can be. How to use DATE_TRUNC() in SQL. In SQL Server, you can convert this to a floating point date serial number (days since 1900-01-01): select convert (float, my_timestamp_field) as float_serial_number. One solution would be: first, move the shift times by 3 hours forward, so 9pm shift starts on Sunday midnight; then truncate to a week, with Sunday being the first day of the week; then move the result back 3 hours, to 21 on Saturday; Here's an example:Despite the name, this returns a TIMESTAMP_NTZ, not a DATE. 切り捨ては抽出とは異なります。例： タイムスタンプを四半期まで切り捨てると、入力タイムスタンプの四半期の最初の日の真夜中に対応するタイムスタンプが返されます。 date_trunc （ week 部分付き） 入力週を切り捨てて月曜日に開始します。 入力週を切り捨てて、定義された週の最初の日に開始します。 last_day （ week 部分付き） 入力週の日曜日を返します。 定義された週の最初の日からの相対的な入力週の最終日を返します。 TRUNC. Truncates the input. 06-04-2021 01:16 AM. 167k232. Follow asked Dec 5, 2022 at 10:48. DATE_TRUNC. Snowflake has once again transformed data management and data analytics with our newest workload—Unistore. snowflake. SELECT date_part ('week', value)::int / 2, array_agg (value) FROM mydates GROUP BY 1. Improve this answer. With this you can group every two weeks. Note: BigQuery’s DATE_TRUNC function supports the truncation of date types, whereas Snowflake, Redshift, and Databricks’ <date/time field> can be a date or timestamp data type. date_or_time_part must be one of the values listed in . For example, if we want just the month from the date 12/10/2018, we would get December (12). snowpark. built-in) functions, scalar or table, in alphabetical order. The equivalent in Snowflake then would be: DATEADD(DAY,-3,DATE_TRUNC(WEEK,GETDATE())) However, taking your example literally, Snowflake would output minus 3 weeks from the start of "this week" DATEADD(WEEK, -3, DATE_TRUNC(WEEK,GETDATE())) SELECT COUNT(ORDER_DATE) as COUNT_ORDER_DATE, ORDER_DATE FROM ORDERS GROUP BY :datebucket(ORDER_DATE), ORDER_DATE ORDER BY COUNT_ORDER_DATE DESC; So could your query work if it was modified like this: SELECT date, address FROM database. Knowledge Base; Snowflake; DATE; Like; Answer; Share; 3 answers; 4. 日付、時刻、またはタイムスタンプを指定された部分で切り捨てます。. For example, if you want to add 2 days to August 1, 2018, then this will be '2018-08-01'::DATE. Snowflake Date range query for historical data and add a. The timestamp data type always contains milliseconds. The DATE_TRUNC function truncates a timestamp expression or literal based on the date part that you specify, such as hour, day, or month. 3. the day belongs to. v1 is a view built from the base table. functions. use DATEADD function to add or minus on data data. It worked. Same as YEAROFWEEK, except uses ISO semantics. This is the date, time, or timestamp to which you want to add. functions. I've been successful in mysql removing weekend days from a date range using the formula below where @s = start date and @e = end date in the range. A single clustering key can contain one or more columns or expressions. By the timestamp column, we can group the data by minute, hour, day, etc. g. Snowflake also provides the TRUNC function, but it requires the unit to be. TRUNCATE TABLE. g. For 7/30, the following query would use 7/25 data when computing the 3-day moving average for 7/30. For example, if I want to know specific data i. In certain. 2022-02-07 12:57:45. SELECT user_id, event, received_at, received_at - LAG( received_at,1) OVER (PARTITION BY user_id ORDER BY received_at) AS last_event FROM segment_javascript. You can use these interval literals in conditions and calculations that involve date-time expressions. datepart Abbreviations Truncation notes; year: yy, yyyy: quarter: qq, q: month: mm, m: dayofyear: dy, y: dayofyear is truncated in the same manner as day: day: dd, d: day is truncated in the same manner as dayofyear: week: wk, ww: Truncate to the first day of the week. Snowflakeは、整数を秒として解釈することが意図されている場合にのみ、整数を含む文字列で TO_DATE、 TO_TIME または TO_TIMESTAMP を呼び出すことをお勧めします。. I built a custom sql query in tableau and I need to add filter or condition that the field 'Effective Date' should be between the beginning of current month and the end of current month So the results will be updated based on the current month without touching it. If the variant contains a date, the date value is preserved as is. Note: BigQuery’s DATE_TRUNC function supports the truncation of date types, whereas Snowflake, Redshift, and Databricks’ <date/time field> can be a date or timestamp data type. Any suggestions. 2017) DAY , DAYOFMONTH. The example produces slots 0 - 11. The DATE_TRUNC is a similar use case but is not the. Syntax. So, by using the “date_trunc ()” function to truncate the timestamp for getting the required output. Data Discovery. ) before adjusting the time by hours. The scale factor is a cost control mechanism that allows you to set an upper bound on the amount of compute resources a warehouse can lease for query acceleration. Cloning lets us quickly clone databases, schemas, and tables without copying the data. DATE_TRUNC. Most of what I'm seeing something akin to a date_dimensions table but I need to be able to create virtual billing dates each month and apply some fraction of transaction to each date. -I'm trying to create a function that returns the date and the last time of that date, eg. It depends on what you want to achieve on the result. 0. Example 3. , DATE_TRUNC(MONTH, MIN(BGN_DATE)) AS MONTH_START FROM myTable WHERE EMP_STS = 'T' GROUP BY 1 ) SELECT. date_trunc('DAY', '2019-09-23 12:33:25') Output : 2019-09-23 00:00:00. g. 1 What is the Syntax of the DATE_TRUNC function? 2. Join our community of data professionals to learn, connect, share and innovate togetherTake two easy steps to create date_trunc: Break down the datetime into small parts (Year, Month, Day/Hour, Minute, Second) and extract the parts you need. Date function in snowflake. Q&A for work. DATEADD ('week', 1, [due date]) Add 280 days to the date February 20, 2021. 7. For more. Variable data types are not explicitly defined but are. Then that is our start of financial year. 2 DATE_TRUNC (). 098 you want 2023-10-18. The default scale_expr is zero, meaning that the function removes all digits after the decimal point. If scale_expr is larger than the input expression scale, the function does not have any effect. One solution would be: first, move the shift times by 3 hours forward, so 9pm shift starts on Sunday midnight; then truncate to a week, with Sunday being the first day of the week; then move the result back 3 hours, to 21 on Saturday; Here's an example: This function is similar to CURRENT_TIMESTAMP, except that: It returns the current timestamp in the UTC time zone, whereas CURRENT_TIMESTAMP returns the timestamp in the local timezone. 1. In this article, we will check what are c ommonly used date functions in the Snowflake cloud data warehouse. Expand Post. DATE_TRUNC¶. Truncate timestamp to custom unit of time in SQL Snowflake. TIME:. When converting from a type with less precision to a type with more precision, conversion uses default values. snowpark. If the input data type is DATE, and the date_or_time_part is hours or. But the 2 parameter version is in the form: CONVERT_TIMEZONE ( <target_tz> , <source_timestamp> ) but you are doing ( <source_timestamp>, <target_tz>) Also the - INTERVAL '5 HOUR' appears the same as "to UTC for the current not in Daylight savings time", it would seem safer to use the complete version of. For example, TRUNC (TO_DATE ('2013-08-05'), 'QUARTER') returns the first date in the third quarter of the year 2013, which is July 1, 2013. (Values of type date and time are cast automatically to timestamp or interval, respectively. ) Building a Data Application. For example I need to get number of sales each week. Follow answered Mar 8, 2022 at 7:47. Follow answered Oct 14, 2018 at 16:28. TRUNC (datetime) Truncate a datetime value. More generally, swapping the inputs reverses the sign: MONTHS_BETWEEN(d1, d2) = -MONTHS_BETWEEN(d2, d1). I use the below function. DATE_FROM_PARTS は、一般的に「通常」の範囲（例：月1～12、日1～31）の値を処理するために使用されますが、これらの範囲外の値も処理します。. date_or_time_expr (Required) must be a date or timestamp expression. You can add prerequisites in this section. For example: Truncating a timestamp down to the quarter returns the timestamp corresponding to midnight of the first day of the quarter for the input timestamp. TO_TIME. 1 Create a table and Insert the data. Valid units for unit are (case-insensitive): 'YEAR', 'YYYY', 'YY': truncate to the first date of the year that the expr falls in, the time part will be zero out. In this article, you have learned Spark SQL DataFrame example of how to truncate Date and Time of a column using Scala language and Date and Time functions. 165k 23 23 gold badges 243 243 silver badges 282 282 bronze badges. Rating: 4. Por exemplo: O truncamento de um carimbo de data/hora ao trimestre retorna o carimbo de data/hora correspondente à meia-noite do primeiro dia do trimestre para o carimbo de data/hora de entrada. One truncates a date to the precision specified (kind of like rounding, in a way) and the other just returns a particular part of a datetime. Note that truncation is not the. 2023-04-07 DATE_TRUNC('MONTH',CURRENT_DATE()) will return the first day of month of. All the parameters have default values, which can be set and then overridden at different levels depending on the parameter type (Account, Session, or Object). In this example, the number 12. Knowledge Base;. g. 14, 0) is NUMBER (4, 0). sql query: select convert_timezone('utc. start_time) and date_trunc ('second',. Snowflake는 문자열 형식의 날짜 및 타임스탬프 값을 올바르게 처리합니다. The value can be a string literal or an expression that returns a string. For source_tz and target_tz, you can specify a time zone name or a. The number of digits the output should include after the decimal point. select to_date (‘2022–10–08t23:39:20’) as “date1”, date_trunc(‘year’, “date1”) as “truncated to year”, date_trunc(‘month’, “date1”) as “truncated to month. WHERE (CREATED_AT::DATE BETWEEN (CURRENT_DATE::DATE - INTERVAL '1 WEEK') AND CURRENT_DATE::DATE). as to the prior month window that can be done via DATE_TRUNC and DATEADD. For example, if the input value is a TIMESTAMP, then the returned value is a TIMESTAMP. Day (number) of the month. I have snowflake column which contains date in yyyy-mm-dd hh:MM:ss format. ). Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this siteThe data type should be one of the numeric data types, such as FLOAT or NUMBER. In this article, you have learned Spark SQL DataFrame example of how to truncate Date and Time of a column using Scala language and Date and Time functions. 0006 ? Also, is this the correct approach to get a close enough credit usage value for a warehouse ?. Postgres 13 or older. 2,197 2 2 gold badges 27 27 silver badges 34 34. I want to truncate date to week but if a week runs over 2 months, it can truncate a new week start date at 1st day of the month as well. Truncates a DATE, TIME, or TIMESTAMP to the specified precision. 9) is -1, not -2. How to write the SQL in snowflake for this? You can use TRUNC or DATE_TRUNC functions in SnowSQL. date_trunc('day',transaction_date) + interval '1' month * generate_series(0,11) I've been having trouble finding analogous syntax in Snowflake. functions. Hi @Sriganesh Palani (TechMahindra Limited) , @hilda. 3 Answers. DATE_TRUNC (with a WEEK part) Truncates the input week to start on Monday. date_or_time_expr は、日付、時刻、またはタイムスタンプに評価される必要があります。これは、追加する日付、時刻、またはタイムスタンプです。例えば2018年8月1日に、2日を追加する場合、これは '2018-08-01'::DATE になります。 snowflake. Extracts the specified date or time part from a date, time, or timestamp. date_trunc (part: Union [Column, str], expr: Union [Column, str]) → Column [source] ¶ Truncates a DATE, TIME, or TIMESTAMP to the specified precision. The query acceleration service does this by offloading portions of. As defined in the ISO 8601 standard (for dates and time formats), ISO weeks always start on Monday and “belong” to the year that contains the Thursday of that week. The ". snowflake. date_trunc ('second', queries. Question > Snowflake v3_sample-dataset > People - filter Birth Date = "12/12. Improve this question. I tried the following but didn't work: DATE_TRUNC ('week', (ds + interval '1 day')) - interval '1 day' AS _week. 2022-09-29 23:59:59. However, the chart on the right depicts monthly Snowflake Credits used per-warehouse. 2. For example, for Jan 2022, 1st Jan is Week 0, 2nd Jan is Week 1, 9th Jan is Week 2, 16 Jan is Week 3, 23 Jan is Week 4, and 30th Jan is Week 4. If the input scale was negative, then the output scale is 0. snowpark. Jan 20, 2017 at 19:23. ) before adjusting the time by hours. DATE_TRUNC function in Snowflake - Syntax and Examples. This function is similar to CURRENT_TIMESTAMP, except that: It returns the current timestamp in the UTC time zone, whereas CURRENT_TIMESTAMP returns the timestamp in the local timezone. CURRENT_DATE () is already of DATE type so you should use as below. 3::FLOAT::NUMBER(3,2); Copy. Knowledge Base. ) Redshift | Snowflake ----- | ----- DELETE customers | DELETE from customers. When negative numbers are rounded up, the value is closer to 0. DATE 、 TIME 、または TIMESTAMP を指定された精度に切り捨てます。. It starts on Monday when I use the postgres database. The new column should have **ALL** the last 365 dates for each date_id. 複数の行が評価される場合（例: 入力が複数の行を含むテーブルの列名である場合）、値が秒. So, for example, if today is Monday 2021-06-28, I only want the results from Monday 2021-06-21 to Sunday 2021-06-27. Snowflake Community Questions. How does one write DATEDIFF(Week,1,[Date]) in form of a Snowflake query? Is it possible? This question was incorrectly asked. What is DATE_TRUNC()? DATE_TRUNC() is a function used to round or truncate a timestamp to the interval you need. After the conversion, the Snowflake DATE_TRUNC() function is used to truncate the timestamp to the required interval (e. Is it a bug or is there any other way to remove the time component altogether ? date_trunc¶. select column1 ,date_trunc ('week', column1) as week_start from values ('2021-03-24'::date), ('2021-03-15'::date); @user14328853 wow, you want the start of the week, and there is a function that does exactly that, and you prefer to the the last day of. There are many answers to this question h e r e already (those 4 are all this month). Possible Values. ) (or simply WEEK(. Share your feedback. In Snowflake, to use query parameters, define and set at least one variable to use in a subsequent query. date_trunc(part: Union[Column, str], expr: Union[Column, str]) → Column [source] Truncates a DATE, TIME, or TIMESTAMP to the specified precision. g. Alternative for DATE_PART. (Personally, I prefer the Snowflake approach but I was surprised to find how many cases used the Redshift syntax. The data type returned by TRUNCATE (3. A note on BigQuery: BigQuery’s DATE_TRUNC function supports the truncation of date types, whereas Snowflake, Redshift, and Databricks’ <date/time field> can be a date or timestamp data type. I am working with a raw table that contains unprocessed data coming from logs. ISO Weeks¶. snowflake. '05-2020'. datepart Abbreviations Truncation notes; year: yy, yyyy: quarter: qq, q: month: mm, m: dayofyear: dy, y: dayofyear is truncated in the same manner as day: day: dd, d: day is truncated in the same manner as dayofyear: week: wk, ww: Truncate to the first day of the week. 9) is -1, not -2. Alternative option. Current best Snowflake query. See the example below to see how you can aggregate by HOUR: SELECT SUM(number) AS total, TIMESTAMP_TRUNC (date, HOUR) AS hour FROM ( SELECT CAST('2021-02-04 12:50:01-7:00' AS. Note that truncation is. This series will take a deeper dive into the Information Schema (Snowflake’s data. Adjusting the Scale Factor¶. You can use a table generator: select '2022-07-04'::date + row_number () over (partition by 1 order by null) - 1 GENERATED_DATE from table (generator (rowcount => 365)) ; Just change the start date and the number of days into the series. g. If a non-integer decimal expression is input, the scale of the result is inherited. on Snowflake with the accepted answer `CAST(Round((day( current_date() ) +6)/7,0) as VARCHAR) as. これにより、たとえば、年のN番目の日を選択できます。. Therefore, your line should read: WHERE job_date >= DATE_TRUNC ('month', '2019-04. Improve this answer. functions. snowflake. functions. snowpark. snowflake. I'd like to know or calculate the week ending date for a specific value. Notes. The value I'm trying to get to is Friday's date, which is 7/19/2019 - so I can group on it and return weekly counts. What is the difference between DATE_TRUNC and TO_DATE ? I have two options to convert timestamp into date: DATE_TRUNC ( day,<timestamp >)::date and TO_DATE (. date_trunc¶ snowflake. これらの関数は同義語です。. NETFLIX WHERE WEEK = '2018-11-26' GROUP BY WEEK,DAY. 1. functions. DAYOFWEEK [1. Connect and share knowledge within a single location that is structured and easy to search. Next, add a year and subtract a day to get the end of the current financial year. Also, you need to study the week in snowflake. Any valid year (e. Function DATE_TRUNC in Snowflake (Docs here) allows you to truncate a given timestamp to a given default unit of time, being available: 'YEAR', 'MONTH', 'DAY', 'HOUR', 'MINUTE' and 'SECOND'. The interval table. The default is month. The start position should be an expression that evaluates to an integer. Returns the absolute value of a numeric expression. SELECT TRUNC(datevalue, 'MONTH') FROM datelist; Result: 01/MAR/22. Sorted by: 2. So the following was created. Teams. e. Based on the parts extracted, create a new datetime. For a timestamp expression, the date from the timestamp. Because the date_part is WEEK (MONDAY), DATE_TRUNC returns the DATE for the preceding Monday. select trunc (x / 3600 / 24) days, trunc (x / 60 / 60)-trunc (x / 3600 / 24)* 24 hours, trunc (mod (x, 3600)/ 60) min , trunc (mod (x, 60)) sec;TO_DATE , DATE. end_time) group by 1 Using the same dataset as above, this query 7 executed in 2. to round -0. For details, see Supported Date and Time Parts. This will show you the format used by your Snowflake server and will convert the date into whatever format you want. #standardSQL SELECT DATE_TRUNC (CURRENT_DATE (), YEAR) as YEAR. 1 to 31. show parameters like 'WEEK_START%'; alter session set WEEK_START = 7;Episode #2 of Snowflake SQL Context Functions Part-2 demonstrates the power of date and time context functions with real-life examples. Snowflake also provides the TRUNC function, but it requires the unit to be. When used to aggregate data, it allows you to find time-based trends like daily purchases or messages per second. In T-SQL, the first day of the week is defined by the @@DATEFIRST T. This means that a day in one year might belong to a week in a different year: For days in early January, the WOY (week of the year) value can be 52 or 53 (i. --set the first day of the. TO_TIMESTAMP_LTZ. date_trunc snowflake. A pure "date" is stored as a date with the time portion set to 00:00:00 (midnight at the beginning of the day), and TRUNC ( date) will take any date and truncate the time to 00:00:00, so if you need to compare two dates you can write. Our Snowflake Timezone is in UTC, and Metabase Localization is in America/Los_Angeles (running on Elastic Beanstalk in Oregon). Add a comment |Usage Notes¶. Conversão; TO_DATE. Also deletes the load metadata for the table, which allows the same files to be loaded into the table again after the command completes. 6. Note that truncation is. In your example your interval duration is 1 hour. For a variant expression: If the variant contains a string, a string conversion is performed. datepart. date_trunc (part: ColumnOrName, expr: ColumnOrName) → Column [source] ¶ Truncates a DATE, TIME, or TIMESTAMP to the specified precision. Returns the <date> with the specified number <interval> added to the specified <date_part> of that date. BigQuery also supports. functions. Any valid year (e. date_trunc¶ snowflake. 例：. snowpark. The data. As defined in the ISO 8601 standard (for dates and time formats), ISO weeks always start on Monday and “belong” to the year that contains the Thursday of that week. Follow edited Dec 3, 2021 at 13:01. It seems snowflake does not recognize 'ww' format. snowpark.