You can even find the number of hours, minutes, seconds, and so on in terms of details in. 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. Hi @JustineMit - if an answer helps you, please upvote and/or accept it. 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. This system-defined table function enables synthetic row generation. When using datediff to calculate a year, it only looks at the year. There are certain use case scenarios when it is recommended to use the CURRENT_DATE function within the Snowflake cloud data warehouse which are as follows: You want to match the current date with column value to get the required output. Here's something slightly different from what the o. Mar 27, 2013 at 14:06. 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. functions. date_or_time_expr (Required) must be a date or timestamp expression. In general, it is always better to post code, not just an image. For DATEDIFF: date_or_time_expr1 and date_or_time_expr2 can be a date, time, or timestamp. When date_or_time_part is week (or any of its variations), the output is controlled by the WEEK_START session parameter. KP. Learn how to use the DATEDIFF function in Snowflake to calculate the difference between two date, time, or timestamp expressions based on the date or time part requested. Replace () function helps to remove all the occurrences of a specified substring with input string. p. Grants_To_Users. If you combing using BEGIN and END block then you cannot set a session variable inside the block. Try: MAX(date 1) - MIN(date 2). 0. 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. datediff(part: str, col1: Union[Column, str], col2: Union[Column, str]) → Column[source] Calculates the difference between two date, time, or timestamp columns based on the date or time part requested, and returns result of col2 - col1 based on the requested date or time part. Converting Valid Character Strings to Dates, Times, or Timestamps. To run a stored procedure inside a transaction, you. Snowflake has the simply function Quarter(timestamp()) which returns current quarter, but wondering how to do day of QTR , all tutorials reference Postgres/ sql server. For instance, you can sub. For example, an offset of 2 returns the expr value with an interval of 2 rows. 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. Image file. The function supports units of years, quarters, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, and nanoseconds. datediff¶ snowflake. snowpark. I am struggling with a snowflake Database LEFT JOIN query with a date range. DATEDIFF. If the value is of type TIMESTAMP_TZ, the time zone is taken from its value. For timestamp_expr, the time portion of the input value. The * tells Snowflake to look at all columns, but you could have put just one column as it means the same thing. SELECT first_action. nanosecond は、時、分、秒、および小数秒の9桁すべてを使用します. 117 3 11 DATEDIFF ( <date_or_time_part>, <date_or_time_expr1>, <date_or_time_expr2> ) If date_or_time_part is week (or any of its variations), the output. , DATEDIFF and DATEADD). DATEADD function Arguments date_or_time_part. date_part (Optional) is the date part for which the last day is returned. So, the following snippet returns 119 ( 6 = 7th January 1990 ) SELECT DATEDIFF (year, '1900/01/07', '2019/05/15'); Share. O sinal de menos (-) também pode ser usado para subtrair datas. microsecond uses the hour, minute, second, and first six digits of the fractional seconds. CONVERT will convert to '27'. You can use the SWITCH statement form of CASE thus you just need to branch the options you want, and matching one will be used. The units are used is a Date part ( year, month, date ) or Time part (hours, minute, second). An aggregate function always returns exactly one row, even when the input contains zero rows. checkin_date, '2018-08-01') <= 7, 1, 0)) as visits_past_7_days, sum(iff(datediff(DAY, uc. 44597. create or replace table interval (id integer, interval_start time); insert into interval (id,interval_start) select id, to_time (dateadd (hour,id,to_timestamp_ntz ('1970-01-01'))) from ( select 0 as id union select row_number () over (order by. Created_Date)/86400 >=8. You could simply exclude the value in where eg. O sinal de menos (-) também pode ser usado para subtrair datas. Subtract two SQL DATE types (represented by java. In Snowflake, it is possible to run stored procedures within a transaction, which means that the changes made by the stored procedure are committed or rolled back as a single unit of work. Stack Overflow. Follow asked Feb 4, 2022 at 0:30. snowpark. DATETIME is an alias for TIMESTAMP_NTZ. This function comes in two flavours: MySQL 2 argument version. snowflake. Please check attempt. One of the examples in the Examples section below illustrates the. Right now, you are reffering to a whole column, so it does not know which value in the column to use. 2021-06-10 12:07:04. It covers all the basics, plus has the added feature of easily being able it to your warehouse with no storage cost. Cognos will convert this to DATEDIFF but the arguments are reversed in the 2 functions. Then you can run a fairly simple query: select t. functions. 5 to 0), pass in 'HALF_TO_EVEN' for the rounding_mode argument. If you are trying to use add_months rather than dateadd than the query should be . functions. months 1-12, days 1-31), but it also handles values from outside these ranges. functions. Connect and share knowledge within a single location that is structured and easy to search. That means you could get a series of disparate dates instead of the desired result. Also ,you can try this method to calculate working days between 2 dates. Recent Snowflake feature improvements mean that it’s becoming easier to generate monitoring and administrative email notifications from within the platform. 0. 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 could be a very inaccurate representation of the time between the two dates. Returning Sum of all rows that fit date criteria. The function will always. DATE_TRUNC. Along with Preeti Shrimal, Adwate Kumar. For example, If substring ‘cc’ can be replaced by ‘bb’ in the given input string ‘abbab’, then the resultant output will be ‘accab’. The DATEDIFF is then comparing the first 'recday' to the other lines and returning the number of days between these two dates. In this article, Let us see a Spark SQL Dataframe example of how to calculate a Datediff between two dates in seconds, minutes, hours, days, and months using Scala language and functions like datediff(), unix_timestamp(), to_timestamp(),. Supported date and time parts. From fetching the current timestamp to calculating date differences, we've got you covered. Presumably, by business day, you mean Mon-Fri. To Here is an example of changing a TIMEZONE at the session level: ALTER SESSION SET. Here is a link to the documentation. snowpark. Calculates the difference between two date, time, or timestamp expressions based on the specified date or time part. "TargetTable" (AddressTypeID ,1 Answer. datediff (part: str, col1: ColumnOrName, col2: ColumnOrName) → Column [source] ¶ Calculates the difference between two date, time, or timestamp columns based on the date or time part requested. Examples¶. snowpark. I have a table that contains all checkin dates for all users for a business. select datediff ( day, Date ('Tue Jan 01 1980 00:00:00 GMT-0800 (Pacific Standard. : you're comparing dates with timestamps, and not whole days), you can. A more general form of the question is Snowflake takes the simpler approach, and answer all units of date_diff in the difference of the values at the unit compared. In the second form of CASE, each value is a potential match for expr. approx_percentile_combine. columns WHERE table_name = 'hrStaff'. DATEDIFF¶ Calculates the difference between two date, time, or timestamp expressions based on the date or time part requested. WHERE (CREATED_AT::DATE BETWEEN (CURRENT_DATE::DATE - INTERVAL '1 WEEK') AND CURRENT_DATE::DATE). The condition is an expression that should evaluate to a BOOLEAN value (True, False, or NULL). DATEDIFF (WEEK,. The DATEDIFF () function calculates the difference in days between two DATE values. Some time you expect the diff in "days" between 1. Expand Post. The collation specifications of all input arguments must be compatible. See also:DATEDIFF. datediff (part: str, col1: ColumnOrName, col2: ColumnOrName) → Column [source] ¶ Calculates the difference between two date, time, or timestamp columns based on the date or time part requested. snowpark. Snowflake----Follow. First, convert the text values (presumably) to valid datetime values. id , sum (datediff (‘second’, -- calculate the max of the two start time (case when t. Follow edited Mar 23 at 17:46. Snowflake is cloud agnostic and uses virtual compute instances from each cloud provider (AWS EC2, Azure VM, Google Compute Engine). Many applications use date functions to manipulate the date and time data types. If you are using SQL Server 2012 or higher version,Try with the below script. For both DATEDIFF and minus sign: Output values can be negative, for example, -12 days. In MariaDB, you can use TIMESTAMPDIFF function. The datepart value cannot be specified in a variable, nor as a quoted string like 'month'. This topic describes how to use the different types of window functions supported by Snowflake, including: General window functions. The date Functions are sub-divided into 7 types of functions. 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 in depth if required Add links and other resources as. AMA WITH MIKE TAVEIRNE Exciting news! Data Superhero, Mike Taveirne, is in forums from Sept 26-29 to answer your questions. This unit of measure must be one of the values listed in . Sorted by: 3. Sorted by: 0. Snowflake SQL compilation error: cannot change column from type TIMESTAMP_LTZ(9) to TIMESTAMP_NTZ(9) 2 DateTime in Snowflake Timestamp '23-Jan-2015 23:02:39' is not recognizedMin/Max of a group. I need to compare 2 dates and return the number of days in between with 2 decimal places. Possible Values. Truncation does not remove the month and day; instead it sets them to the earliest date in the specified period. DATEDIFF의 경우: date_or_time_expr1 및 date_or_time_expr2 는 날짜, 시간 또는 타임스탬프일 수 있습니다. datediff(part: str, col1: ColumnOrName, col2: ColumnOrName) → Column [source] Calculates the difference between two date, time, or timestamp columns based on the date or time part requested. Usage Notes. functions. We would like to show you a description here but the site won’t allow us. Modified 6 years, 9 months ago. Invalid function type [DATEDIFF] for window function. My time stamps are down to the milisecond. which yields an output of: float_serial_number. The function always returns a DATE. SQL Server Syntax DATEDIFF(datePart, date1, date2) The DATEDIFF() function in SQL Server has three required parameters:. snowpark. Please try a simpler expression. DATEDIFF. For numeric string arguments that are not constants, if NUMBER (18,5) is not sufficient to represent the numeric value, you should cast the argument to a type that can. 999) from pqrquet file to snowflake. I guess first I need to find "min_data" for value, then "next_date" and calculate "DATEDIFF". convert(varchar,cast((End_Datetime-Start_Datetime) as time),108) how to convert this to snowflake snowflake. sql. It is possible that there is something wrong in another part of the query. : pip install data-diff 'data-diff [postgresql,snowflake]' -U. Solution. Input: DAY ----- 2022-06-09 2022-04-04 Output DAY_MONTH -----. The syntax for using the DATEDIFF function in Snowflake and Amazon Redshift, and Databricks looks like the following: datediff ( < date part > , < start date / time > , < end date / time > ) A note on Databricks: Databricks additionally supports a separate DATEDIFF function that takes only two arguments: a start date and an end date. ,datediff(second, datetime_1, datetime_2) as diff_seconds ,diff_seconds % (60) as num_seconds ,floor(diff_seconds / 60) % 60 as num_minutes ,floor(diff_seconds /. sales_office_idThe expression to be returned based on the specified offset. Expression to be converted into a time: For string_expr, the result of converting the string to a time. In most use cases, Snowflake correctly handles date and timestamp values formatted as strings. array_aggThat syntax looks correct and in line with the documentation for DATEDIFF. Dec 15, 2022 at 23:25. date_from, evnt. select t. 1. date1 and date2 are the respective starting and ending dates for which you are about to find the difference. SQL Server : -- Get difference in days SELECT DATEDIFF ( dd, '2022-09-01', '2022-09-05'); # 4. 0. This value is returned if the condition is true. Learn the syntax, examples, & use cases to help you master date calculations in Snowflake. Using PySpark SQL functions datediff(), months_between() you can calculate the difference between two dates in days, months, and year, let’s see this by using a DataFrame example. When I attempt to use the function:Returns the <date> with the specified number <interval> added to the specified <date_part> of that date. 이 함수는 연도, 분기, 월, 주, 일, 시간, 분, 초, 밀리초, 마이크로초, 나노초 단위를 지원합니다. start <= w. Show more actions. 997', '2013-06-01 21:59:59. select t. @nehan it looks like you were able to solve your issue, that is so great! It would mean a lot if you can select the "Best answer" yourself to help others find the right answer faster. If you want the "exact" (as far as floating point gets) average, use. datediff(part: str, col1: Union[Column, str], col2: Union[Column, str]) → Column[source] Calculates the difference between two date, time,. The function supports units of years, quarters, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, and nanoseconds. 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. functions. SELECT (DATEDIFF (dd, LossDate, ClaimDate) + 1) - (DATEDIFF (wk, LossDate, ClaimDate) * 2) - (CASE WHEN DATENAME (dw, LossDate) = 'Sunday' THEN 1 ELSE 0 END) - (CASE WHEN DATENAME (dw, ClaimDate) = 'Saturday' THEN 1 ELSE 0 END). Query the GENERATOR function on the temporary table:Add a comment. Example:DATEDIFF on several events for specific value. In almost all cases, at least one of those expressions references a column in that row. SELECT datediff (MINUTE,cast ( [EndTime] as datetime),cast ( [StartTime] as datetime)) FROM YourTable WHERE TRY_CONVERT (DATETIME, [EndTime]) IS NOT NULL AND TRY_CONVERT (DATETIME, [StartTime]) IS NOT NULL. 2. As shown clearly in the result, because 2016 is the leap year, the difference in days between two dates is 2×365 + 366 = 1096. Fractional seconds are not rounded. Extracting the quarter date part from a timestamp returns the. e. Note that unit values can be different in SQL Server DATEDIFF and MariaDB TIMESTAMPDIFF. ORDER_DATE, CASE WHEN ORDER_DATE IS NULL THEN 'NO' ELSE 'YES' END AS ORDER_PLACED, C. 0. Add a comment | 4. Usage Notes¶. 1. HOUR. datediff (part: str, col1: Union [Column, str], col2: Union [Column, str]) → Column [source] ¶ Calculates the difference between two date, time, or timestamp columns based on the date or time part requested. I would use this: DECLARE @BegDate as date. 要求された日付または時刻の部分に基づいて、2つの日付、時刻、またはタイムスタンプ式の差を計算します。この関数は、3番目の引数から2番目の引数を減算した結果を返します。 マイナス記号（-）を使用して日付を減算することもできます。If the datasource was previously pointing to SQL Server or DB2 and is now going to Snowflake, there might be some incorrect results when using the days_between. The function returns the result of subtracting the second argument from the third argument. target_data_type. 5 years ago. Usage Notes¶. datediff(part: str, col1: Union[Column, str], col2: Union[Column, str]) → Column[source] Calculates the difference between two date, time, or timestamp columns based on the date or time part requested, and returns result of col2 - col1 based on the requested date or time part. The closest I've come is FLOOR. From the inputs you got there are 123 months between the date of 07/03/2011 to 24/3/2021. DATEDIFF (date_part, date1, date2) Where, date_part parameter is the part of the date like day, month, and year, which you want to use in your computation. Know everything you need about Snowflake DATEDIFF. The default is month. This allows you to ensure that the data changes made by the stored procedure are consistent and atomic. Why DATEDIFF() function in Snowflake works differently while getting date difference in weeks. approx_percentile_estimate. June 3-6, 2024. There are also consideration of different rules for different countries governing how Daylight Savings Time are calculated, and sometimes the rule changes too. (Snowflake) is much more elegant, and I meant to mention that option in my answer, but be aware that it does not support time periods of 24 hours or greater. TSQL DateDiff to return number of days with 2 decimal places. schemaname. If you plan on using this in a table or graph, using the function "Selectedvalue" will add the current context. This is the optional expression to partition by. The query is valid in other SQL engines such as Postgresql and Presto so it looks like Snowflake doesn't support this type of query. *, (date2 > date1 + interval '28 day') as flag from t; Share. event_id, evnt. 4 Answers. 124 seconds. Das Minuszeichen ( -) kann auch zum Subtrahieren von Datumsangaben. Push out all due dates by one week. expr1 and expr2 are date or date-and-time expressions. Supported date and time parts. With that, I expect that someone can provide you with a solution for you in Snowflake. If you then apply a further DATEADD () operation to that date, as in the. BOO_DateCI, ___Bookings. For example, SELECT DATEDIFF (day, '2036-03-01', '2036-02-28'); returns -2, hinting that 2036 must be a leap year. 3 and above. where (DateDiff (d, FilteredPhoneCall. case when datediff ('MONTH', FISCAL_CUR_YEAR, V_DATE_1) < 0; then datediff ('MONTH', DATEADD (year,-1, FISCAL_CUR_YEAR), V_DATE_1)+ 1;. 44597. sql; snowflake-cloud-data-platform;. The percentile of the value that you want to find. 함수 요약SELECT DATEDIFF(MINUTE, LAST_ALTERED, CURRENT_TIMESTAMP()) AS MINUTES_SINCE_LAST_UPDATE FROM MONITORING. Share. functions. schemaname; CREATE table objectname. 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. My working query is: COPY INTO "TargetSchema". With this you can calculate the. Whereas DATEDIFF by default returns difference of dates in INT format. datediff (part: str, col1: ColumnOrName, col2: ColumnOrName) → Column [source] ¶ Calculates the difference between two date, time, or timestamp columns based on the date or time part requested. SELECT AVG (CAST (DATEDIFF (d, DateUsed, DateExpires) AS FLOAT)) FORM tbl. You can only run them separately. Start Date & End Date should be Min & Max dates of Sales Fact Table. A general expression. I will use floating point maths to make my point. I assume that this happens due to the /sum(iff(iscode=1,1,0)) where this presumably sometimes returns 0. (Though calendar tables tend not to use a lot of storage. The collation of the result of the function is the highest-precedence collation of the inputs. looks like you need to create a procedure that loops MONTHS_BETWEEN times and use if/else conditions to check if you hit the last month and functions DATEDIFF and LAST_DAY to calculate number of days. 9 and 2. Upon running the query you can. With this you can calculate the. The function returns the result of subtracting the second argument from the third argument. dow_string. GENERATOR. There are several ways to approach this, but here's the way I do it with SQL Generator function Datespine_Groups. The second step involves getting a difference in seconds between the two dates and converting that difference into hours by dividing by 3600. I 引数¶ date_or_time_part. we are evaluating both products, Snowflake as a data warehouse and PowerBI as the visualisation platform for dashboarding / reporting needs. A function that could be interesting for Data Analysts and Data Scientists is the DATEDIFF function. Timestamp difference in Snowflake. Result as Date — Image by Author Function 3: Date Difference. CUSTOMER_ID, C. (COL1)) from TABLE1) as MIN_TS ,(select date_trunc(minute, max(COL1)) from TABLE1) as MAX_TS ,datediff(minutes, MIN_TS, MAX_TS) as TOTAL_MINUTES ), RECURSIVE as ( select. functions. An alternative sql only solution - start and end dates go into the current_date() spots. EXTRACT. I asked our Snowflake rep if they could create. Postgres doesn’t have DATEDIFF(). expr1. ほとんどのユースケースでは、Snowflakeは文字列としてフォーマットされた日付とタイムスタンプの値を正しく処理します。Some databases, such as Snowflake and BigQuery, support functions like DATEDIFF or DATE_DIFF. Thus, the SQL code I share in my newsletter isn’t easily copy-pasted. – Simeon Pilgrim. The basic syntax of the DATEDIFF function is given below. I consent to my information being shared with Event Partners in accordance with Snowflake’s Event. Here are some great date functions to round out your toolkit. The function. You'll get a more accurate result if you compute the difference between the two dates in days and divide by the mean length of a calendar year in days over a 400 year span (365. 1 Answer. For example, Snowflake supports the following values: YEAR, QUARTER, MONTH, WEEK, DAY, HOUR,. Account_Usage. select distinct; p. 5 is rounded to -1. Datediff didn't work: DATEDIFF(hour,2,TO_DATE(substr(p. expr2. Declare firstName varchar; Declare lastName varchar; select firstName =FirstNameColumn,lastName =LastNameColumn from User; snowflake-cloud-data-platform; Share. Given the basic example,. 1 Answer. Timestamp Datatypes in Snowflake. So far I have this: SELECT evnt. Below is SQL Server:Get the Average of a Datediff function using a partition by in Snowflake. You should. DATEDIFF(expr1,expr2) Use: SELECT DATEDIFF(___Bookings. I understood the sql insert column concept, but got mixed up with $1 of parquet format (parquet data is imported to staging as 1 column data). Creates rows of data based either on a specified number of rows, a specified generation period (in seconds), or both. snowflake. Supported date and time parts. Le signe moins ( -) peut également être utilisé pour soustraire des dates. Scenario: How to populate a table with a row count total equal to the difference between two dates. tbl_1 where month (datecompleted) = month (dateadd (month,-1,current_timestamp)) and year (datecompleted) = year (dateadd (month,-1,current_timestamp)) and ApprovalRequiredFrom = 'GRM' and DATEDIFF (DAY, xx, yy). This is the date or timestamp expression to which you want to add a specified number of months. the datediff truncate to the unit you are finding the diff over. datediff(yy,'31 Dec 2013','1 Jan 2014') returns 1. That is a 5 hour difference. Snowflake does not allow to run session variable statement and dashboard query statement together. -2. select post_visid_high || ':' || post_visid_low as visitor_id , lag (date_time) over (partition by visitor_id order by date_time asc) as previous_date , datediff (minute, previous_date, date_time) as difference_in_minutes from adobe_data. Note, that since DATEDIFF returns an integer value, the result also will be an integer. You should add another column to indicate the type of count you're calculating, but you can accomplish this with datediff,last_day, and date_trunc(to get first of month). DATEDIFF(wk, 7, CAST(LEFT(NWeek,4) AS NVARCHAR(100))) + (RIGHT(NWeek,2)-1), 7)) as IDate . modifiedon, GETDATE ()) = 0) But I need to select the yesterday. Note that it is possible to generate virtual tables with 0 columns but possibly many rows. It is following snowflake's documentation. If the data type is TIME, then the date_or_time_part must be in units of hours or smaller, not days or bigger. (datediff(DAY, uc. For instance. 이 함수는 연도, 분기, 월, 주, 일, 시간, 분, 초, 밀리초, 마이크로초, 나노초 단위를 지원합니다. NAME FROM CUSTOMER C LEFT JOIN. The date is complete (year, month, and day). I am looking to understand what the average amount of days between transactions is for each of the customers in my database using Snowflake. DATEDIFF¶ Calculates the difference between two date, time, or timestamp expressions based on the date or time part requested. I would suggest that you eliminate the datediff() entirely:. Window functions that calculate rank (e. There is also now a calendar table available in the Snowflake Data Marketplace. Result as Date — Image by Author Function 3: Date Difference. For example, We want to get the difference between Jan 10th 2021 and Jan 25th 2021, then the resultant. 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. In my view while taking difference between time (using DATEDIFF), both the time stamp values should be in same timezone. 1 to be 0. . snowpark. In order to get the integer part of Impala's MONTHS_BETWEEN using Snowflake functions we apply the following logic : IFF(DAY(DATE1) >= DAY(DATE2), DATEDIFF('month', DATE2, DATE1), DATEDIFF('month', DATE2, DATE1) - 1) In order to get the fractional part of Impala's MONTHS_BETWEEN using Snowflake functions we. 170 Followers. If our cheese sample data is in a spreadsheet where “Aging Start” is in column B and “Aging End” is in column C:Snowflake supports a single DATE data type for storing dates (with no time elements). snowflake. Alternative for DATEDIFF. これは、追加する時間単位を示します。例えば、2日を追加する場合、これは DAY になります。 この測定単位は、 サポートされている日付と時刻の部分 にリストされている値のいずれかでなければなりません。 For both DATEDIFF and minus sign: Output values can be negative, for example, -12 days. Learn more about TeamsGordon's answer is useful, but beware -- seq4() is not guaranteed to produce sequential numbers. This indicates the units of time that you want to add. There are 3 different timestamp types in Snowflake: TIMESTAMP_NTZ is the datatype for timestamps without a timezone (ntz = no time zone). I am using DATEDIFF(minute, date1, date2) to compare them, however, in some records the date is Null, which returns a null result and messes up the CASE. date_from, evnt. functions. Supported date and. User Conference.