3. g. For seconds: DATEDIFF (second, LAG (ACTION_DATE) OVER (PARTITION BY users ORDER BY ACTION_DATE), ACTION_DATE ) AS DIFF_SECONDS. This is the date, time, or timestamp to which you want to add. In SQL Server here's a little trick to do that: SELECT CAST(FLOOR(CAST(CURRENT_TIMESTAMP AS float)) AS DATETIME) You cast the DateTime into a float, which represents the Date as the integer portion and the Time as the fraction of a day that's passed. 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。 TIMESTAMPDIFF. 🔀 To compare data between databases, install data-diff with specific database adapters, e. If you have extra questions about this answer, please click " Comment ". From fetching the current timestamp to calculating date differences, we've got you covered. ,DATEDIFF(SECOND, DATETIME_1, DATETIME_2) AS DIFF_SECONDS ,DIFF_SECONDS % (60) AS NUM_SECONDS. –string_expr or timestamp_expr or variant_expr or integer. So if you run that code in April (today) it's get 30th April. 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 between the two dates specified. There are also consideration of different rules for different countries governing how Daylight Savings Time are calculated, and sometimes the rule changes too. 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)Join our community of data professionals to learn, connect, share and innovate together. Fractional seconds are not rounded. snowpark. Knowledge Base. 小数秒は丸められません。たとえば、 DATEDIFF(milliseconds, '00:00:00', '00:00:01. 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. Calcula a diferença entre duas expressões de data, hora ou carimbo de data/hora com base na parte de data ou hora solicitada. I will use floating point maths to make my point. 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. Currently, my code just returns zero on the right side of the decimal place. For the 2-argument version: The source_timestamp argument is considered to include the time zone. working_day_start_timestamp then w. The fact that the function returns an integer number of months both when the days of the month are the same (e. (In our example, it’s the expiration_date. Hour of the specified day. You can use these interval literals in conditions and calculations that involve date-time expressions. Q&A for work. What about bank holidays? The typical way this is handled is to create a Calendar table with one row per day for the next N years, with fields for year, month, week number, day etc and flags that determine whether it's a working day, holiday, weekend etc. datepart The units in which DATEDIFF reports the difference between the startdate and enddate. Alias for DATEADD. NULLIF( <expr1> , <expr2> ) returns NULL if expr1 is equal to expr2, otherwise returns expr1. You can even find the number of hours, minutes, seconds, and so on in terms of details in. Account_Usage. : you're comparing dates with timestamps, and not whole days), you can simply convert two date or timestamp strings in the format 'YYYY-MM-DD HH:MM:SS' (or specify your string date format explicitly) using unix_timestamp(), and then subtract them from each other to get the difference in seconds. SET MY_VARIABLE=10; SET MY_VARIABLE='example'; Multiple variables can be initialized in the same statement, thereby reducing the number. 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. DATETIME is an alias for TIMESTAMP_NTZ. Grants_To_Users. functions. Window functions operate on windows, which are groups of rows that are related (e. I initially had an issue with loading long timestamps (9999-12-31 23:59:59. Thus select DATEDIFF('year', '2020-12-31', '2021-01-01') returns 1 because there's 1 year difference between 2020 and 2021, even though there's only actually 1 day between these 2 dates. The data type of the variable is derived from the data type of the result of the evaluated expression. 0 to 23. To Here is an example of changing a TIMEZONE at the session level: ALTER SESSION SET. 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. For timestamp_expr, the time portion of the input value. You can subtract days from a date in Snowflake using the DATEADD function. If you need the difference in seconds (i. The function returns the result of. Calculates the difference between two date, time, or timestamp expressions based on the specified date or time part. functions. Returns the number of days from startDate to endDate. Le signe moins ( -) peut également être utilisé pour soustraire des dates. What is SUBSTRING () Function in Snowflake? SUBSTRING () function helps to get the substring from a string by providing the starting index and length of the substring. Recent Snowflake feature improvements mean that it’s becoming easier to generate monitoring and administrative email notifications from within the platform. Para ambos DATEDIFF e sinal de menos: Os valores de saída podem ser negativos, por exemplo, -12 dias. 997', '2013-06-01 21:59:59. Variables can be initialized in SQL using the SET command. Hi @JustineMit - if an answer helps you, please upvote and/or accept it. approx_percentile. I want to be able to compare the date between the first record and any future records for that card id where that future record's legit = 0, and if the first record is within 10 days, show that record. 이 함수는 연도, 분기, 월, 주, 일, 시간, 분, 초, 밀리초, 마이크로초, 나노초 단위를 지원합니다. functions. Syntax For DATEDIFF DATEDIFF( <date_or_time_part>, <date_or_time_expr1>, <date_or_time_expr2> ) For minus sign <date_expr2> - <date_expr1> Arguments For. In the second form of CASE, each value is a potential match for expr. Window functions that calculate rank (e. To perform subtraction, simply pass a negative value for the value parameter. mysql - Disable ONLY_FULL_GROUP_BY - Stack Overflow. Snowflake SQL Query - Invalid Argument Function Using DATEADD() Hot Network QuestionsThis function uses sequences to produce a unique set of increasing integers, but does not necessarily produce a gap-free sequence. Hi @JustineMit - if an answer helps you, please upvote and/or accept it. I usually us datediff(dd, l. In this article, we will check what are c ommonly used date functions in the Snowflake cloud data warehouse. TIMESTAMPDIFF. functions. expr1 and expr2 are date or date-and-time expressions. Syntax: MONTHS_BETWEEN(date1, date2 ) Snowflake: DATEDIFF(<. So far I have this: SELECT evnt. expr. String constants must always be enclosed between delimiter characters. snowflake. The reason I like to do it this way, is because its. 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。. In MariaDB, you can use TIMESTAMPDIFF function. (Most window functions require at least one column or. Is there a way around this, or a way to predetermine which date is null up front? (psudocode)functions. 33%. Any suggestions? In my view while taking difference between time (using DATEDIFF), both the time stamp values should be in same timezone. 00. For example, an offset of 2 returns the expr value with an interval of 2 rows. , DATEDIFF and DATEADD). date_or_time_part 은. I want to be able to compare the date between the first record and any future records for that card id where that future record's legit = 0, and if the first record is within 10 days, show that record. Without seeing your data, I'm guessing that your table 'vvdays' contains the two fields 'udid' and 'recday'. For example, if you want to subtract 7 days from a date, the syntax would be: SELECT DATEADD ( DAY, -7, CURRENT_TIMESTAMP ()) Remember that the interval parameter must be in. Improve this answer. 5401041667. Then you can run a fairly simple query: select t. functions. Connect and share knowledge within a single location that is structured and easy to search. Also if the deadline_date is NULL, set the number of days as 0. datediff¶. DATEDIFF accepts either. Krusader. This should be an integer. Join us at Snowflake Summit 2024 to explore all the cutting-edge innovation the Data Cloud has to offer. For ' integer ' (a string containing an integer), the integer is treated as a number of seconds, milliseconds, microseconds, or. Mar 27, 2013 at 14:06. In almost all cases, at least one of those expressions references a column in that row. Notas de uso¶. Specifies the day of week used to calculate the date for the previous day. Invalid function type [TIMEDIFF] for window function. -6. Trying to get the "native"/NTZ time from a timestampntz field. Setting variables in snowflake. I am trying to understand window functions in Snowflake better. approx_percentile_estimate. snowpark. 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. Snowflake: DATEDIFF(‘day’, start, stop) AS days. Notas de uso¶. TABLES WHERE TABLE_SCHEMA = 'REPORTING' AND TABLE_NAME ='LOGS' AND MINUTES_SINCE_LAST_UPDATE >. INFORMATION_SCHEMA. I am new to snowflake. functions. date_expr2 The date to subtract. Grants_To_Roles; 4: Roles Assigned to Users: Select * from Snowflake. So while creating the parquet file, I declared timestamp data type as string in the parquet and then use effective_date::varchar::timestamp. Cause. snowpark. Accepts relevant date and time parts (see next section for details). For timestamp_expr, the time portion of the input value. This looks like the syntax for SQL Server, not Snowflake. これらの関数（および日付部分）はセッションパラメーターを無視します. approx_percentile_combine. nanosecond uses the hour, minute, second, and all nine digits of the. 00. The number of dateparts separating two date/time instances is too large You can use following method which is overflow-safe and gives you a float result:DATEDIFF on several events for specific value - Part 2. I want to run the same code again with different parameters and want. functions. There are 3 different timestamp types in Snowflake: TIMESTAMP_NTZ. DATEDIFF의 경우: date_or_time_expr1 및 date_or_time_expr2 는 날짜, 시간 또는 타임스탬프일 수 있습니다. 0 );This is the date or timestamp expression to which you want to add a specified number of months. sql 명령 참조. How exactly did you get this to work against Snowflake? Can you please provide the exact script you used (including the command(s) to set the variable values)? Thanks!1. functions. TIMESTAMPDIFF. g. functions. date_to, DATEDIFF(DD, evnt. (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. I'll jump straight to the code for those who like to see the answer first, and further down explain how it works. SQL. 1239') は1. Alias for DATEADD. Using a library for any of three languages, you can build applications that process data in Snowflake without moving data to the system where your application code runs, and process at scale as part of the elastic and serverless Snowflake engine. I was trying to select N=(count of units of time between 2 dates) number of datapoints from an anonymous table. *, min (date) over (partition by cardid) as min_date from t ) t where legit = 0 and date < min_date + interval '10 day. That means you could get a series of disparate dates instead of the desired result. Upon running the query you can find the Date Column with date format 'YYYY-MM-DD' and I want to change it to 'DD/MM/YYYY'. Modified 6 years, 9 months ago. A função oferece suporte a unidades de anos, trimestres, meses, semanas, dias, horas, minutos,. You want to insert the data along with the current date. ). snowflake. 124 seconds. functions. The difference between TZ and LTZ comes from the offset set in the database, meaning that even if the displayed offset is +0019 (19 minutes), the difference is <60 seconds. Teams. Snowflake Datediff ignores timezones. 2. My time stamps are down to the milisecond. Sorry if I wasted anyone's time. – string_expr or timestamp_expr or variant_expr or integer. Concatenation operator: While we were running & repointing our loads into Snowflake we discovered a important difference in how Oracle vs Snowflake concatenation works. approx_percentile_combine. For example, DATEDIFF(milliseconds, '00:00:00', '00:00:01. I've tried the Snowflake help guide but I want to avoid executing multiple queries. DATEDIFF ( date_or_time_part, date_or_time_expr1, date_or_time_expr2) Calculates the difference between two date, time, or timestamp expressions based on the date or time part. Result: '1. modifiedon, GETDATE ()) = 0) But I need to select the yesterday. This allows, for example, choosing the N-th day in a year, which can be. e. In addition, it uses object or file storage from AWS S3, Azure Blob Storage, or Google Cloud Storage for persistent storage of data. Step 5: Move the Existing Data Set After your database objects are created in Snowflake, the next step is to move the historical data to Snowflake. When date_or_time_part is dayofweek or yearofweek (or any of their variations), the output is controlled by the. See the syntax, usage, and examples of this function with various date and time parts. 1 to be 0. To get the number of full time units passed between datetimes, you can calculate the difference in lower units and then divide by the appropriate number. Just to clarify SQL server seems to require DATEDIFF (datepart, recentDate, olderDate) as startdate and enddate are a bit nebulous. 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. 2. When the Ignore Nulls clause is set, any row whose expression evaluates to the Null is not included when offset rows are counted. functions. Converting Valid Character Strings to Dates, Times, or Timestamps. Found the solution -- I set a static value for the GENERATOR and then put a QUALIFY statement on it to limit the values to the first maxrange returned. approx_count_distinct. I have to compare 2 separate columns to come up with the most recent date between them. 300'); You can truncate the milliseconds and leave the same data type, you will still see zeros but not different values:First. 0. start end), -- calculate the min of the two end times (case when t. If the answer is the right solution, please click " Accept Answer " and kindly upvote it. But if you want to count orders over some subset you could, for example, count customers by order type:. 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. Alias for DATEDIFF. DATETIME. array_aggThat looks like a good way of handling it, Simon. * from (select t. 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. I am new to sql language and recently snowflake. AMA WITH MIKE TAVEIRNE Exciting news! Data Superhero, Mike Taveirne, is in forums from Sept 26-29 to answer your questions. 2. 1. With this you can calculate the. So, i think, hive considers date + time difference but snowflake consider only date part and time part is ignored. Query and process data with a DataFrame object. As Spark doesn't provide the other unit, I use below method, select (bigint (to_timestamp (endDate))) - (bigint (to_timestamp (startDate))) as time_diff. – Simeon Pilgrim. datediff¶ snowflake. Using your sample: SELECT CASE WHEN datediff (year, date_column, getdate ()) > 1 THEN datediff (year. I can convert the TZ on the timestamps, but that's undone by the time-only functions. functions. g. schemaname. How do I work with variables in snowflake. 함수 요약If one of the arguments is a number, the function coerces non-numeric string arguments (e. BR. Hi @ML , . For example, get the current date, subtract date values, etc. Can anybody help how can we pass dynamic dates in snowflake View/Table. TO_TIME converting to LTZ. This function take a time unit and two dates, and counts the number of date. If { Ignore | Respect } NULL is not specified then default will be Respect Nulls. 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. From fetching the current timestamp to calculating date differences, we've got you. BOO_DateCI, ___Bookings. Some time you expect the diff in "days" between 1. 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. Thanks, Rag. select datediff (second, CURRENT_TIMESTAMP, fs. 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. id , sum (datediff (‘second’, -- calculate the max of the two start time (case when t. Simple right? The only thing is that difference in years is duplicated here. Snowflake execute immediate into variable. For a variant expression: If the variant contains a string, a string conversion is performed. We would like to show you a description here but the site won’t allow us. select *, cast ( (cast (begin_date as date) - cast (end_date as date) YEAR) as decimal (3,2)) AS year_diff from x. . Databricks. e. Currently, my code just returns zero on the right side of the decimal place. dates from the DATEDIFF() 1. I am struggling with a snowflake Database LEFT JOIN query with a date range. Discover the latest in AI, genAI, Apache Iceberg, streaming, privacy-preserving collaboration, flexible programmability, application. I want to create Calendar Table in Snowflake which has start and end date as dynamic dates. g. Is there any inbuilt function that provides the timestamp instead of computing the datediff every time? In both cases above the output timestamp is epoch timestamp corresponding to the CURRENT_DATE (which is the. checkin_date, '2018-08-01') <= 7, 1, 0)) as visits_past_7_days, sum(iff(datediff(DAY, uc. snowflake. The Snowflake INTERVAL functions are commonly used to manipulate date and time variables or expressions. value. Alias for DATEDIFF. 다음 예에서 timestamp_type_mapping 매개 변수는 timestamp_ltz(현지 타임존)로 설정됩니다. 非推奨の警告: Snowflakeの将来のバージョンでは、文字列化された整数値をミリ秒、マイクロ秒、ナノ秒ではなく、秒として自動的に解釈する可能性があります。. For example, you can use interval data type functions to add years, months, days, hours, etc to the timestamp variables. later_date, p. snowflake. To sum up, depending on requirements: DEFAULT DATE 'YYYY-MM-DD' or if it has to be a current date DEFAULT. Idle time and concurrency are therefore important considerations in cost attribution and optimization efforts. firstdate)), AVG(AVG(DATEDIFF('days',dex. Accepts relevant date and time parts (see next section for details). highest, second-highest, etc. To change the rounding mode to round the value half to even (e. 44597. HOWEVER, if the clicked date is not found (meaning it is set to: '2999-12-31') then take the deadline date - claimed date. Snowflake DATEDIFF function returns the difference between 2 dates thus it doesn't accept NUMBER as an argument in place of a date. Berechnet die Differenz zwischen zwei Datums-, Zeit- oder Zeitstempelausdrücken anhand der angeforderten Datums- oder Zeitkomponente. The offset is measured in: The number of UTF-8 characters if the input is VARCHAR. 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. Pramit Marattha. CREATE OR REPLACE FUNCTION fn_get_timestamps_in_range (grain VARCHAR, start_tsmp TIMESTAMP_TZ, end_tsmp TIMESTAMP_TZ) RETURNS. date_or_time_part 은. Snowflake DATEDIFF function returns the difference between 2 dates thus it doesn't accept NUMBER as an argument in place of a date. Snowflake Date Functions. 124秒ではなく、1. A function that could be interesting for Data Analysts and Data Scientists is the DATEDIFF function. La fonction renvoie le résultat de la soustraction du deuxième argument et du troisième argument. TIMEDIFF. MINUTE. 2 Answers. In Snowflake, if any part of the concatenation is null, the entire result is null. TO_TIME and TIME_FROM_PARTS apply the LTZ to it, but there are no functions to convert TIMEs between timezones. Tried with this: DATEDIFF(week , start_date , end_date ) but its calculating from Monday and I wanted it to calculate from Sunday. A função retorna o resultado da subtração do segundo argumento do terceiro argumento. I am trying to get the same output in Snowflake, but cant figure out how to return a float. ELSE 0 END – if the previous. Actually, the marked answer originally produced wrong results for milliseconds 1 - 99: Example 1 second, 27 milliseconds: DATEDIFF % 1000 will return 27. DATE accepts dates in the most common forms ( YYYY-MM-DD, DD-MON-YYYY, etc. We would like to show you a description here but the site won’t allow us. You should. The function supports units of years, quarters, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, and nanoseconds. 0. DATEDIFF(YY, @DOB, @NOW) - CASE WHEN DATEADD(YY, DATEDIFF(YY, @DOB, @NOW), @DOB) > @NOW THEN 1 ELSE 0 END It's actually adding difference in years to DOB and if it is bigger than current date then subtracts one year. should work fine. PERCENTILE_CONT¶. functions. nanosecond は、時、分、秒、および小数秒の9桁すべてを使用します. Alias for DATEADD. A function that could be interesting for Data Analysts and Data Scientists is the DATEDIFF function. TIMEDIFF. functions. I'm guessing that Trino also looks at the difference in hours between the two timestamps to approximate the result down if it's less than 24 hours. Gordon's answer is useful, but beware -- seq4() is not guaranteed to produce sequential numbers. The number of bytes if the input is BINARY. SELECT AVG (DATEDIFF (d, DateUsed, DateExpires)) FROM tbl. To calculate the difference between two timestamps, convert them to unix timestamps then subtract: Master date and time queries in Snowflake with our comprehensive guide. DATEDIFF on several events for specific value. I have used the code contained below to create date and time scaffolds for several clients for various reasons, such as populating records between the “CreateDate” and “CloseDate” of a data point. date_or_time_part 은. date_from, evnt. This is the number of months you want to add. The value can be a literal or an expression. From MySQL docs: DATEDIFF() returns expr1 − expr2 expressed as a value in days from one date to the other. Example:1 Answer. This code: DATEADD (mm, 1 + DATEDIFF (mm, 0, GETDATE ()), -1) In the original question is another way of obtaining "the last day of the current month" 1 - and gets the same rounding behaviour described above. snowpark. 3 and above. (Most window functions require at least one column or. For both DATEDIFF and minus sign: Output values can be negative, for example, -12 days. DATEDIFF. Feb 28, 2021 at 19:07. Get the Average of a Datediff function using a partition by in Snowflake. SELECT date_from ,date_to ,part ,case part when 'month' then datediff ('month', date_from, date_to) when 'day' then datediff ('day', date_from, date_to) when 'hour' then datediff ('hour', date_from, date_to). functions. 1. So this is really two parts, to know what year-quarter something is with respect to an offset, you just need to subtract the offset month, from the date you have and then year and quarter the adjusted date. Note that setting a negative offset has the same effect as using the LEAD function. Datediff didn't work: DATEDIFF(hour,2,TO_DATE(substr(p. Use conditional aggregation: select id1, id2, avg (case when datediff < 14 then n_products end) as avg_lt14, avg (case when datediff >= 14 and datediff <= 28 then n_products end) as avg_14_28, avg (case when datediff > 29 then n_products end) as avg_29pl from t group by id1, id2; Some databases calculate the averages of integers as. g. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. To calculate the difference between two timestamps, convert them to unix timestamps then subtract: Master date and time queries in Snowflake with our comprehensive guide. First, convert the text values (presumably) to valid datetime values. , DATEDIFF and DATEADD). select t. SELECT AVG (CAST (DATEDIFF (d, DateUsed, DateExpires) AS FLOAT)) FORM tbl. approx_percentile_combine. Arguments¶ condition# In the first form of CASE, each condition is an expression that should evaluate to a BOOLEAN value (True, False, or NULL). For DATE and TIMESTAMP data,. However then. For source_tz and target_tz, you can specify a time zone name or a. ORDER_DATE, CASE WHEN ORDER_DATE IS. startdate: The first date or datetime value. Snowflake is the most efficient for SQL and ETL operations. Performance. It returns a number, not a date. たとえば、 DATEDIFF (milliseconds, '00:00:00', '00:00:01. snowpark. 0. . functions. Calculates the difference between two date, time, or timestamp expressions based on the specified date or time part. 0. checkin_date, '2018-08-01') <= 90, 1, 0)) as visits_past_90_days, from user_checkin as uc where uc. The syntax for DATEDIFF is pretty straightforward: DATEDIFF (datepart, startdate, enddate) Let’s explore the parameters used here: datepart: The unit of time you want to use for the calculation, like year, quarter, month, day, or even smaller units like hour, minute, or second. 15 between 2 values that are 1 year, 1 month and 15 days apart. datediff (part: str, col1: Column | str, col2: Column | str) → Column [source] ¶ Calculates the difference between two date, time, or timestamp columns based on the date or time part requested. In SQL Server, I would create date ranges so I wouldn't have to always change dates in all my where clauses. what I need is to expand their dates for each record, for example: id | date_start | date_end 1 | 2019-12-01 | 2019-12-05 2 | 2020-01-01 |. snowflake. in Snowflake: datediff in year, truncates the values to the YEAR value, and thus will not give expected results. date_from, evnt. 1 Answer. I set row count to 1095 to get 3 years worth of dates, you can of course change that to whatever suits your use case. This gist creates a function in Postgres that implements the DATEDIFF function found in Snowflake, BigQuery, and Redshift. For example, Snowflake supports the following values: YEAR, QUARTER, MONTH, WEEK, DAY, HOUR,. The number of rows backward from the current row from which to obtain a value. Minute of the specified hour. microsecond uses the hour, minute, second, and first six digits of the fractional seconds. In contrast, scalar functions take one row as input and produce one row (one value) as output. snowflake. where (DateDiff (d, FilteredPhoneCall.