Shruti Shruti. It is a customer responsibility to ensure that no personal data (other than for a User object), sensitive data, export-controlled data, or other regulated data is entered into any metadata field when using the Snowflake Service. use DATEADD function to add or minus on data data. Inner sub-query returns the nearest date. [dbo]. 31 2 2 bronze badges. Know everything you need about Snowflake DATEDIFF. )DATEDIFF function Usage. Database, Schema, Table. 850This 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. The end-user should always take care of this by replacing its value inside the procedure, please have a look at the documentation page for further details. To get the minute (0-59) in Snowflake using the date_part function, you can use the following code expression: Assume current date time is 15 December 2021 2 AM. ALTER TABLE table_name ADD column_name TIMESTAMP_TZ (9); Since the newly create column will be null, you could update it: UPDATE table_name SET column_name = cast (CURRENT_TIMESTAMP () as. Snowflake date Dynamic variable. SELECT to_timestamp(CURRENT_TIMESTAMP(), 'HH24:MI:SS. Conclusion. Create and load the table: create or replace table vardttm (v variant); BEGIN WORK; insert into vardttm select to_variant(to_date('2017-02-24')); insert into vardttm select to_variant(to_time('20:57:01. 105 1 1 silver badge 11 11 bronze badges. Extracts the specified date or time part from a date, time, or timestamp. The units are used is a Date part ( year, month, date ) or Time part (hours, minute, second) only relevant parts will be used. select ADD_MONTHS(CURRENT_DATE,-1) as result; The main difference between add_months and dateadd is that add_months takes less parameters and will return the last day of the month for the resultant month if the input date is also the last day of the month, I have to query 10 days data from snowflake database. When using the default Date string formatting from JavaScript in SQL to be cast as date or timestamp types, Snowflake only recognises standard formatted strings, and will reject JS date strings of the form Sun Jul 29 2018 00:00:00 GMT-0700 (PDT). Is there a snowflake sql function that. Snowflake supports a single DATE data type for storing dates (with no time elements). in this getdate() = 2022-09-25 21:38:05. DATEDIFF(DAY/WEEK, START_DATE, END_DATE) will calculate difference, but the last date will be considered as END_DATE -1. Snowflake SQL convert date 'YYYY-MM-DD' to 'DD-MM-YYYY' 1. This approach works equally well for both tables and views. Usage Notes. Select current_date function usage examples. DATE_PART(WEEK,DATETIME) Week , DATE_PART(DAYOFWEEK,DATETIME) Day_of_week. The provided solution to trick the. Featured on Meta Incident update and uptime reporting. converts an input expression to a date), but with error-handling support (i. How do I achieve this ? My date dimension table has a column "date_id" which has dates from 2016-01-01 till 2025-01-01. In addition, all accepted TIMESTAMP values are valid inputs for dates; however, the TIME information is truncated. It does NOT work on Date data types. Extracting the quarter date part from a timestamp returns the. I am trying to rewrite a Snowflake stored procedure that previously used javascript in snowflake scripting. Snowflake supports a single DATE data type for storing dates (with no time elements). Expected out put is in the below format: YYYY-WW (week number of the year) For example:2022-32. For example (6_2021, 7_2021 etc). LOCALTIME. Generate a date range in Snowflake within a tabular UDF. ord. g. You can also refer. . < patch_version > < internal_identifier >However, Snowflake goes beyond basic SQL, delivering sophisticated analytic and windowing functions as part of our data warehouse service. Follow asked Dec 9, 2022 at 13:21. If a non-integer decimal expression is input, the scale of the result is inherited. Change to -1 and your results would be 10/1/18. Best method to get todays data through a view snowflake. To_DATE with the right pattern should work. This should be an integer. Sep 8. 5 to 0), pass in 'HALF_TO_EVEN' for the rounding_mode argument. date_part (Optional) is the date part for which the last day is returned. For example, if a predicate in the WHERE clause references columns of a table participating in an outer join in the FROM clause, the filter operates on the rows returned from the join. 99" feeling to it so you might have to use cludgy workarounds (see below 😀) That being said, date and time objects are tricky everywhere, not just in Snowflake Stored Procedures. Shows "undefined" within the procedure: Inside the procedure, if the same passed parameter with Null is used then it will show. g. When date_part is week (or any of its variations), the output is controlled by the WEEK_START session parameter. Work out the number of months from a fixed financial year starting point, e. CURRENT_TIMESTAMP is the equivalent for GETUTCDATE function in Snowflake. 08/12/2018 12:20 PM, Now I need to cast this as datetime . The data type of the returned value is VARCHAR. A really good article as a starting point. timestamp_expr. if the same value is inserted into a table, the table. path is an optional case-sensitive path for files in the cloud storage location (i. Extracts the corresponding date part from a date or timestamp. 0. Such as. But one thing to note is that the value is always the current timestamp as of when the variable was set. When date_or_time_part is week (or any of its variations), the output is controlled by the WEEK_START session parameter. In this article, we will look at how to create a Snowflake Temporary Table, the syntax, usage, and limitations, as well as some. Redirecting. 1. 0. Hello, The calendar table is used extensively in reporting to generate weekly / monthly /quarterly reports. Snowflake supports using string constants to specify fixed date, time, or timestamp values. In this article, we will check what are c ommonly used date functions in the Snowflake cloud data warehouse. I've tried using partition over and a select sub query but I'm. RequestNumber, tb. Date serial numbers are numeric values representing the "number of days since 01-JAN-1900", and are often used in spreadsheet systems to show users dates (but store the data as a number). snowflake-cloud-data-platform; Share. Function 4: Extract or Date Part. Handling date & timestamp format while loading data into snowflake needs special consideration and many of us are not fully aware of it, specially with CSV data file loading. See also: AS_<object_type>When storing timestamps, Snowflake stores time zone data in the form of adding the offset at the end of the timestamp. For example, DATEDIFF(milliseconds, '00:00:00',. Examples. 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" WITH report_params AS ( SELECT 1::integer as first_value, 3::integer as last_value, 1::integer AS step_value ) SELECT * FROM report_params, table ( generate_series ( first_value, last_value, step_value ) ) Would return error: SQL compilation error: Unsupported subquery type cannot be evaluated. Note that current_timestamp (). Snowflake server, split duration by hour? 4. 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. EDIT (almost 2 years on) This answer was very early in my SO career and it annoys me everytime it gets upvoted because I no longer agree with the sentiment of using DATENAME. DATE accepts dates in the most common forms ( YYYY-MM-DD, DD-MON-YYYY, etc. In Snowflake, SQL format models (i. If only the Timelimit parameter is used, the function generates records until <sec> has/have lapsed. To Here is an example of changing a TIMEZONE at the session level: ALTER SESSION SET. In addition, all accepted TIMESTAMP values are valid inputs for dates; however, the TIME information is truncated. Statement variable binding has a little "version 0. Second, to match by "day", you need to strip the time part from the result of GETDATE (), which you can do by using CAST (GETDATE () as DATE) instead: select * from [TEST]. Time Travel snowflake: The Ultimate Guide to Understand, Use & Get Started 101. In Snowflake, I'd like to use the numeric result of one dynamic sql query in a second dynamic sql query: CREATE OR REPLACE PROCEDURE DB. I am trying to calculate the AVG timestamp for last 7 days in Snowflake database. Improve this answer. Azure Synapse. To get minutes, use MI. Query: CREATE OR REPLACE TABLE MY_DATE_DIMENSIONUsage Notes¶. If you now execute "show variables like 'PREV%'; " you'll see that the variable previous_datetime has the type "text" - which is probably not what you want. AMA WITH MIKE TAVEIRNE Exciting news! Data Superhero, Mike Taveirne, is in forums from Sept 26-29 to answer your questions. @snowflakestar. date_trunc as the documentation say, truncates a timestamp to values on different grain. danD danD. limit 10; I get no rows back for the query above when I do have records for this date in the table. just somebody just somebody. g. SELECT ta. I would recommend that you replace it with the snowflake syntax instead of using your own UDF to do this as it requires you to also share your UDF. Let’s understand the syntax first: GENERATOR(ROWCOUNT => <count> [, TIMELIMIT => <sec>]) If only the Rowcount parameter is used, the function generates <count> number of records. 443. Snowflake is a native-cloud, self-managed service for enterprise-level modern data applications. You will want to read the how it week is defined, to make sure it meet your needs. The string must start with the first two characters (case-insensitive) of the day name: su (Sunday) mo (Monday) tu (Tuesday) we (Wednesday) th (Thursday) 4. To_date () function converts the string, integer, variant or timestamp into the date filed. Syntax. Take a look at the documentation: TO_CHAR , TO_VARCHAR — Snowflake Documentation [ ^] There's a link to Conversion Functions — Snowflake Documentation [ ^ ], which says: Quote: AM , PM - Ante meridiem (am) / post meridiem (pm); for use with HH12. inserting timestamp values into Snowflake table. Serial, tb. Functions like: select Nation, Customer, Total from (select n. Then that is our start of financial year. –. Finally, if you're not sure if the date passed in for [NEXT PAYMENT DUE DATE] is of data type DATE, you can cast it to DATE using the "::date" notation at the end of the column. DATE_TRUNC function Examples. Here, you can e. too many arguments for function [TO_TIMESTAMP (CURRENT_TIMESTAMP (), 'DD-MM-YYYY HH:MI:SS')] expected 1, got 2 Stack. Snowflake official documentation. Any input streams associated withI need the past 90 days to start from the previous day(4/26/2016) from the getdate() value (4/27/2016) Current date = 4/27/2016 Previous Date = 4/26/2016 the 90 days should start from Previous Date(4/26/2016). If date_or_time_part is week (or any of its variations), the output is controlled by the session parameter. SELECT DATEADD(WEEK, DATEDIFF(WEEK,0,GETDATE()),-3) But based on my reading and some SQL Fiddle, it seems to output the start of "this week" minus 3 days. In SQL Server I can do this using recursive SQL but looks like that functionality is not available in Snowflake. I tried the date between '2019-07-30' and '2019-08-09' which includes start and end date? 1 Answer. Learn the syntax, examples, & use cases to help you master date calculations in Snowflake. Cause. How to convert yyyymm to yyyy-mm-dd in sql? 1. snowflake. select datediff ( day, Date ('Tue Jan 01 1980 00:00:00 GMT-0800 (Pacific Standard Time)')::timestamp, Date ('Tue Jan 01 2020 00:00:00 GMT-0800 (Pacific Standard Time)')::timestamp ); The function you mentioned will return the difference in days. The return type of the NOW() function is the timestamp with time zone. Call of the procedure with null values: when we pass nulls, as soon as it comes inside the procedure they get transformed by 'undefined'. SYSDATE Function - Oracle to Snowflake Migration. Hot Network QuestionsThe current date/time in oracle is retrieved using SYSDATE; Although VARCHAR works and is currently synonymous with VARCHAR2, you probably want to use VARCHAR2 for a string data type. SELECT GETDATE () AT TIME ZONE 'UTC' AT TIME ZONE 'Central Standard Time'. Here's an example that first tries to convert the VARCHAR from a 'yyyy-mm-dd' format to the 'dd/mm/yyyy' format. Does not convert from timestamps. any help. net. SQL Snowflake Min Date For Each Record & Group By Month. You can use the below workaround if you want the data in UTC timezone. 5 Answers. To sum up, depending on requirements: DEFAULT DATE 'YYYY-MM-DD' or if it has to be a current date DEFAULT. It provides analytics and big data capabilities using multiple languages and. Creating rows in a table based on min and max date in Snowflake SQL. addDate (TalendDate. 2021-11-04. In SQL Server I can do this using recursive SQL but looks like that functionality is not available in Snowflake. 0. 2 Answers. d_dates (start_date date, end_date date) RETURNS TABLE (date_id number, generated_date date) LANGUAGE. For a timestamp expression, the date from the. Are you trying to get the first day of the previous month? If so, try this DATEADD( month, -1 , date_trunc('month', current_date()) )getdate() is not an function in snowflake. 0000000) you can use either of these: Using these to establish the current date, then add (8-24) hours and or (22-24) hours to establish the boundaries of yesterday e. Please consider adding this functionality. But if you are casting to date there is no need to truncate as they are the same value, thus '2019. DECLARE @startofmonth date SET @startofmonth = DATEADD (dd,1,EOMONTH (Getdate (),-2)) The -2 will get you the first day of last month. Share. c_name Customer, sum (o. Snowflake does not currently support the special date or timestamp. If you haven't started writing an app with snowflake, it reads like a lot of a smoke. select last_day (dateadd (month, -1, current_date () ) , 'month') -- last day of previous month --. 1 What is the Syntax of To_DATE Function in Snowflake?Snowflake DATEDIFF function returns the difference between 2 dates thus it doesn't accept NUMBER as an argument in place of a date. I am trying to run the following query to retrieve the 7th business day from the given date. The string must start. This table function can be used to query the average daily storage usage, in bytes, for a single database (or all the databases in your account) within a specified date range. Each date value contains the century, year, month, day, hour, minute, second and milliseconds. SELECT current_date () AS a, WEEKOFYEAR ( a ), WEEKISO ( a ) ; gives: A. 1. 5 is rounded to -1. For DATE and TIMESTAMP data, Snowflake recommends using years. GETDATE function equivalent in Snowflake SELECT CURRENT_TIMESTAMP() --2021-02-02 21:25:20. It is a known issue that the time values inserted using these functions can be a few hours earlier than the LOAD_TIME values returned by the COPY_HISTORY function or. If that doesn't work, you may want to try. Anything same in Snowflake for GETDATE ? Thank You. Yes if the wind is point in the correct direction Snowflake with do this for you. e. Redirecting to - docs. The returned value contains four fields: < major_version >. – skadya. SQL Format Models. 2. Another way to solve this (without calculating the date difference 3 times or more) is to get the total number of years when subtracting the two values: SELECT datediff (YEAR, '1900', DATEADD (d, -1, GETDATE ()) - r. It is always 01-01. 2. cast (CREATED_DT AS Date) it will returns you only date. Be slightly careful with the minus 1. user_id, us. Following are some of the specified date and time zone. AskMeAboutData (Snowflake) 4 years ago I agree with above comment that you cannot use function within COPY command directly, but if you wrap this command in stored procedure, you will be able to create a variable to get current date and then create another variable to concatenate first part of the copy command with date variable. To empower your business decisions with data, you need Real-Time High-Quality data from all of your data sources in a central repository. TO_DATE , DATE. 1. A date to be converted into a timestamp. First idea was in the while loop check if the variable date was less than the current date. let me know if you need more details. SQL. 1. More generally, swapping the inputs reverses the sign: MONTHS_BETWEEN(d1, d2) = -MONTHS_BETWEEN(d2, d1). Improve this answer. I have a query that converts DATETIME value to week number and day of week. The default setting is YYYY-MM-DD. Need help from experts on this. SQL. It is becoming one of the top data services in the world because of its capabilities and ease of use. o_totalprice). dt = (SELECT TOP 1 dt FROM tb WHERE RequestNumber = ta. I have been facing the issue while retrieving year from snowflake table. 000'::Timestamp_TZ, 'yyyy-mm-dd hh:mi:ss') 2021-07-19 02:45:31. The position is 0-based, not 1-based. Ajay Sant Ajay Sant. Format 103 specifies dd which means leading zero preserved so all that one needs to do is slice out the first 2 characters. For the 3 argument version. e. Note that truncation is not the same as extraction. DATE accepts dates in the most common forms ( YYYY-MM-DD, DD-MON-YYYY, etc. Syntax DATEADD( <date_or_time_part>, <value>, <date_or_time_expr> ) Arguments date_or_time_part This indicates the units of time that you want to add. Also in that same block of code, you alias product_1 to p1 , but in the CASE use the table name, strictly speaking once you have an alias you should only use that, and it made the case code simpler to read, almost the. Assuming the "created_date" is stored as a timestamp or datetime (synonyms), then you just need to remove the single quotes from around the created_date column name and change "to_char" to use the "monthname" function: select date_part (year, created_date) as year, date_part (month, created_date) as month, monthname. SQL DateFromParts. Add a comment. I hope it will help. GETDATE () CURRENT_TIMESTAMP. DAYNAME¶. 'Datetime' is filetype DateTime in snowflake, but in SQL, it's just a date MM-DD-YYYY, so there is the 6:00 added to turn it into a datetime. e. Follow asked Dec 9, 2022 at 13:21. For example, if you want to add 2 days, then the value is 2. edited Jul 19, 2017 at 14:18. SELECT field('q', 's', 'q', 'l'); However I get this error: SQL compilation error: Unknown function FIELD Anyway I can find the position of something in an "IN" statement?. Both functions retrieve their value from the operating system in the. connector from snowflake. g. For example, the following returns NULL, not TRUE: SELECT NULL IN (1, 2, NULL) AS RESULT; Copy. I want to access the value of "my value" from within my block but I can't seem to get it. See the following example: SELECT NOW (); now -----2017-03. g. The Snowflake Convert Timezone command consists of the following arguments: <source_tz> represents a string that specifies the time zone of the input timestamp. g. date_or_time_part must be one of the values listed in Supported Date and Time Parts. below code solved the issue in snowflake. It is always 01-01. Syntactically, IN is treated as an operator rather than a function. Truncating or Rounding the Timestamps is useful for “grouping by time. MSSQL on the other hand does an implicit cast of '0' to DATE '1900-01-01' and returns the result in the requested date part. Write resolution instructions: Use bullets, numbers and additional headings Add Screenshots to explain the resolution Add diagrams to explain complicated technical details, keep the diagrams in lucidchart or in google slide (keep it shared with entire Snowflake), and add the link of the source material in the Internal comment section Go. Truncate a date (from a timestamp) down to the year, month, and day: Truncate a TIMESTAMP down to the hour, minute and second. There are certain use case scenarios when it is recommended to use the DATEDIFF function within the Snowflake cloud data warehouse which are as follows: If we want to find the difference between two dates in the form of days, years, or months. snowflake-cloud-data-platform; Share. , ChatGPT) is banned. The query (as asked by the OP) given above works, but Snowflake appears to malfunction when you pass a column with a named/dynamic value expression instead of CURRENT_DATE (a static expression). SP_DATA_COLUMN_VALUES(table_name varchar, column_name varchar, date_column varchar) RETURNS TABLE() LANGUAGE SQL AS $$ -- Finds most. 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. You cannot influence how a date is STORED, since all dates are stored in an internal format. You can use a DATE. The core. < minor_version >. 1. SYSDATE. Thanks. date_part (Optional) is the date part for which the last day is returned. 67 4 4 bronze badges. Window functions operate on windows, which are groups of rows that are related (e. 1,7,10) means year will come in yy format. The workaround is to recreate the table with the default value and reload the data. in this getdate() = 2022-09-25 21:38:05. DATEDIFF supports years, quarters, months, weeks, days, hours, minutes, and seconds. Unfortunately, the naive approach with the DATEDIFF() function doesn't quite cut it here - using DATEDIFF('year', birthday, current_date) nets the difference between the current year and the birthday year, which. Show the current date, time, and timestamp:This is the number of units of time that you want to add. Mar 2, 2022 at 19:22. Alternative for DATE_PART. This topic describes how to use the different types of window functions supported by Snowflake, including: General window functions. timestamp_expr. A MAX() function leverage metadata in Snowflake, so it won't even use a warehouse to get it. What is the best way to set multiple variables in snowflake from a table. 2. This blog talks about Azure Synapse vs Snowflake in great detail highlighting the 6 key differences between the two. Moving code from Redshift to Snowflake As I said here, my company is in the process of moving from Redshift to Snowflake. Usage Notes¶. Truncation does not remove the month and day; instead it sets them to the earliest date in the specified period. Snowflake supports date_trunc () for datatypes DATE, TIME, and TIMESTAMP: SELECT DATE_TRUNC (month, CURRENT_DATE ()) AS first_day_of_month; Sounds like you're working with strings. The default is month. We use the following code to get data and time immediately: select current timestamp; select systimestamp (); select getdate (); select localtimestamp (); Find the rows between two timestamps or data. with cte_date as ( select case when (datecol <> '' and datecol is not null and datecol <> 'null') then to_char(to_date(to_char(datecol), 'yyyymmdd'), 'yyyy-mm-dd') else '3000-01-01' end as test_date,* from tablename where len (datecol) <> 1 ) select * from cte_date where. I am trying to create a table in Snowflake with 15 mins interval. Like Liked Unlike Reply. g. Eric G Eric G. Converts an input expression to a date: For a string expression, the result of converting the string to a date. Temporary policy: Generative AI (e. This solution is timezone independent, no math needed: alter session set timezone = 'US/Eastern'; select date_part (epoch_second, current_timestamp ()); -- 1637194610 alter session set timezone = 'America/Los_Angeles'; select date_part (epoch_second, current_timestamp ()); -- 1637194621. Snowflake - Query Date and Time. Till here my query is working in snowflake and o/p of this is in below kind of format . In case of NULL input it will result in to NULL. Casts a VARIANT value to a date. I agree with Mike Nicewarner - it would be really cool to have a way to track the DDL changes. A possible workaround, especially if your data is not very large, is to create a new table with the exact schema you want and move the. Mar 2, 2022 at 19:24. @ejcortes yep I was in. DATE_FROM_PARTS is typically used to handle values in “normal” ranges (e. ; TIMESTAMP: for year,. Minute of the specified hour. If either the input_expr or the scale_expr is NULL, the result is NULL. 0 to 23. You may want to try PostgreSQL and see if it meets your needs first. Date and Time Formats in Conversion Functions¶. My table has value as below: year :20 day:10 month :02 I need to dob value as 2020-10-02. We might have: 2021-11-04T00:00:00. n_name order by sum (o. Examples Show the current date, time, and timestamp:. The idea here is to replace all the alphabetical characters except numbers and date delimiter. snowflake. If I run. Expected out put is in the below format: YYYY-WW (week number of the year) For example:2022-32. Traditional On-Premise Data Warehouse solutions have limited Scalability and Performance, and they require. How to handle numbers in column names in Snowflake. snowflake-task; Share. I need to derive the calculation based on transaction date with exchange_date of the month if there is no match found then get next recent previous date less than transaction date. Max of date when date is in group by. The data type of the variable is derived from the data type of the result of the evaluated expression. FF') AS a; Solution. can be solved via. Fractional seconds are not rounded. BTW: MM is used to get 2 digits month. Scaffolding your data can be the key to creating analyses such as the current number of open tickets on a given day or displaying the number. Snowflake supports a single DATE data type for storing dates (with no time elements). dates)) Share. It does not allow the user to add a second parameter for the expected format. A date to be converted into a timestamp. I've attempted variations of the following in my where clause : DATEADD (YEAR,-12,O. I am trying to create dynamic SQL so that it loops between start_date to end_date to copy into from different s3 folders based on datesCURRENT_DATE function in Snowflake - Syntax and Examples. I am trying to create a table and insert the current date and time from a front end and getting an error, any help appreciated. In a query, it is specified in the FROM clause immediately after the table name and it determines the point in the past from which historical data is requested for the object: The AT keyword specifies that the request is inclusive of any changes made by a statement or transaction with. This is the date or timestamp expression to which you want to add a specified number of months. Statement variable binding has a little "version 0. second uses the hour, minute, and second, but not the fractional seconds. Sheena Mathew. This query. For a timestamp expression, the date from the timestamp. e. I don't think so, CURRENT_TIMESTAMP and GETDATE() return the same result in the SQL Server. 0. to specify the time with a precision of milliseconds). It takes date value 1900. If you are trying to use add_months rather than dateadd than the query should be . to_timestamp. Related. as to the prior month window that can be done via DATE_TRUNC and DATEADD. I'm trying variations of window functions with last_value or lag, and partitioning on ID, order by Date, with the IGNORE NULLS clause. It serves as a powerful tool for performing the following tasks: Restoring data-related objects (tables, schemas, and databases) that might have been accidentally or. TIME : You can use time type to store hour, minute, second, fraction with (includes 6 decimal positions). o_totalprice) Total, rank () over (partition by n. Hi everyone, I need to add one new column in a table where I need to put current date,. GET COMMAND . Where: namespace is the database and/or schema in which the named internal stage or table resides. Please check on below, which I have given a try if its what you are looking at. if you want just the truncated date, casting to date as cmcau mentions is a simple way to go. Ask Question Asked 1 year, 9 months ago. DATA_RETENTION_TIME_IN_DAYS. Hour of the specified day. RequestNumber AND dt >= ta. For the first week of the year, we do not need to make a complex calculation.