Instead of using SUBSTRING, pass the entire date-time field to the TO_DATE function with the MM-DD-YYYY format which encapsulates all 3 formats above. <code_block1> – The code block. Consider SQL Server function to calculate the difference between 2 dates in months: SQL Server : -- Difference between Oct 02, 2011 and Jan 01, 2012 in months SELECT DATEDIFF ( month, '2011-10-02', '2012-01-01') ; -- Result: 3. The DATETIME_DIFF arguments are datetimes, not dates; Snowflake, Redshift, and Databricks’ DATEDIFF functions support multiple date types such as dates and timestamps. The DATETIME_DIFF arguments are datetimes, not dates; Snowflake, Redshift, and Databricks’ DATEDIFF functions support multiple date types such as dates and timestamps. 5 for 1/1/2016. select. AWS Redshift was one of the first cloud data warehouses to become available on the market, officially launching in 2013. product_name, (EXTRACT (year FROM age ('2020-12-20'::date, MAX (iv. The syntax of creating the temporary table by using this method is as shown below –. Data types are declared when tables are created. *, row_number () over (order by year_to_month desc) as rn from sample t ) where rn = 1. Example. DATE_DIFF function Examples. g. If the second date or time is earlier than the first date or time, the result is negative. Amazon Redshift treats decimal values as if they are different static types and allows all mathematical operations. Then, the last_value function will take last value per row and the distinct removes all irrelevant rows from the output. to_char (current_date,'YYYYMMDD') =. This sql will give you the number of days between two dates as integer:. 2. Amazon Redshift data sharing allows you to securely share live, transactionally consistent data in one Amazon Redshift cluster with another Amazon Redshift cluster across accounts and Regions, without. Trunc function works on both date and numeric types. 2. GETDATE ()関数 / CURRENT_DATE - 現在時刻 これは、現在の日時を取得するのに使います。. When the table grows larger, Amazon Redshift might change the distribution. CASE statement in DateDiff (Amazon Redshift) 19. Sorted by: 1. Note that unit values can be different in SQL Server DATEDIFF and MySQL TIMESTAMPDIFF. For example, the following command doesn't return an error, even though it sets the time zone to an invalid value. datepart. This example uses the current date to find the difference between the current date and a specific date. The DATEPART() function returns an integer which is a part of a date such as a day, month, and year. Method 2: Querying Data in Redshift using SQL. person_id. SELECT DATEDIFF (day, '2019-12-05 08:09:55', GETDATE ()); Result: 39. 0. The input timestamp is truncated to the. In SQL Server, there is a 3 argument verison of the DATEDIFF () function, where the result produces the number of date part periods between the two dates, with the dates being TRUNC-ed to the relevant date part. (DATEDIFF(sec,starttime,endtime)) avg_duration, MIN(starttime) as oldest_ts,. 2 Answers. Results can include various columns and metadata. The Redshift DATEDIFF function is used to calculate the difference between two date values based on the interval specified using. Each value that Amazon Redshift stores or retrieves has a data type with a fixed set of associated properties. Share. id = d. To view a list of. Check the Amazon Redshift Advisor recommendations. The int difference between the startdate and enddate, expressed in the boundary set by datepart. The values in the SALETIME column are timestamps. you want difference in terms of days. cust_id WHERE DATEDIFF(year, t. To view a list of. The first 6 is the difference (in months) between 01/10/2018 (October 1, 2018) and 30/04/2019 (April 4, 2019). The opposite change, a decrease in wavelength and simultaneous increase in frequency and energy, is known as a blueshift, or negative redshift. The function returns the result of subtracting the second argument from the third argument. See moreDATEDIFF. md at master · awsdocs/amazon-redshift. Snowflake separates compute from storage, allowing for flexible pricing and configuration. tobymao closed this as completed in #1746 3 weeks ago. To view a list of supported time zone names, run the following command. The external table statement defines the table columns, the format of your data files, and the location of your data in Amazon S3. Calculates the difference between two date, time, or timestamp expressions based on the date or time part requested. 00. ex: date 1 1/27/2019 date 2 2/01/2019 output 1 in terms of days output 2 in terms of weeksDATEDIFF does not guarantee that the full number of the specified time units passed between 2 datetime values: -- Get difference in hours between 8:55 and 11:00 SELECT DATEDIFF (hh, '08:55', '11:00'); -- Returns 3 although only 2 hours and 5 minutes passed between times -- Get difference in months between Sep 30, 2011 and Nov 02, 2011. Not the 1st one as it perform unnecessary (unless you really have such unprocessed data) truncate. You can use the Redshift date format functions to convert the string literals, integer, date/time etc to required format. Snowflake vs Redshift - learn 10 differences between these DW. Using Amazon Redshift. For the rest I use new_start and new_end - 1 second. Returns the difference between two dates or times for a given date. datediff ("max", max. The following example finds the difference, in number of quarters, between a literal value in the past and today's date. I know this question is a few years old- but I stumbled across it and. 6) but when I execute it in Redshift as UDF, it gives me incorrect output. CURRENT_DATE returns the start date for the current transaction, not for the start of the current statement. The minus sign ( -) can also be used to subtract dates. At this time, Amazon Redshift version 1. And only do that for one day ranges. La parte specifica del valore di data o ora (anno, mese o giorno, ora, minuto, secondo, millisecondo o microsecondo) su cui la funzione opera. Following are rules for working with interval literals supported by Amazon Redshift. Transforming date with Redshift. Datediff is not relevant here . Amazon Redshift allows users to query data, either by connecting with their desired cluster and then executing queries using the AWS Query Editor or by using an external SQL-based client such as MySQL Workbench. Now on the first interval I select the original date_start same as the last interval I use date_end. 0 / 60 / 24 as diff from mytable t. Range. However, if I use DATEDIFF(day,. The Redshift DATEDIFF function is used to calculate the difference between two date values based on the interval specified using either Years, Months, Days, Weeks, Hours, Minutes, Seconds, Milliseconds, et al. select to_date ('02 Oct 2001', 'DD Mon YYYY'); to_date ------------ 2001-10-02 (1 row) The following SQL statement converts the string 20010631 to a date. This often happens only for a few minutes. Thank you. The expression is one of the following data types: With the argument DISTINCT, the function eliminates all duplicate values from the specified expression before calculating the minimum. select last_day(add_months(last_day(trunc(to_date('20230509', 'yyyymmdd'))), - 1)) + 1. Find out key distinctions in architecture, performance, scaling, pricing—and more!Amazon Redshift accepts different date formats, including ISO date time strings. 19. Categories: Date/Time. This is a guide to Redshift join. Date_trunc Function. For example, suppose that you're calculating the difference in years between two dates, 12-31-2008 and 01-01-2009. e. state = b. dbeaver. The following example will always return zero rows due to the. md at master ·. When an input value includes a time zone, Amazon Redshift uses the time zone to convert the value to UTC and stores the UTC value. Redshift Date Time Operations. CREATE TABLE TEMP name of the table (name of the columns along with their data types); Where all the. The time zone for the return value. Photo by Daniele Levis Pelusi / Unsplash. At the time of insertion date into the timestamp datatype column, the value of date will be implicitly converted into the fully timestamp value. The following format strings apply to functions such as TO_CHAR. answered Mar 2, 2016 at 6:53. I am trying to calculate the number of days between two dates. For example, the following code would give the number of days between date1 and date2: DATE_DIFF is great for calculating the. date) between -60 and 0 group by 1 ) select t1. select to_date ( '20010631', 'YYYYMMDD', FALSE ); The result is July 1, 2001, because there are only 30 days. 0'. Inner join, right outer join, left outer join, full outer join and cross join are the type of joins available in redshift. – nrmad. 3. 1. state and a. datetime. You can create an Amazon Redshift column with a BPCHAR (blank-padded character) type, which Amazon Redshift converts to a fixed-length CHAR (256) column. Our latest blog goes over 5 potential options: 1. AWS Collective See more. PostgreSQL - Date Difference in Months. DATEDIFF(DAY, '8/4/2014', '8/5/2014') +1 You need to add 1 to the DATEDIFF function and it will work as you want. The values in the CALDATE column are dates. To get the complete list of possible values, please refer to the Redshift Documentation. An event 13. If you do not want to skip the rows, you will need to load the date into a VARCHAR field (which will not cause an error) and later you will need to convert the VARCHAR into a DATE. In MySQL, we can use SEC_TO_TIME () to do this conversion easily. This function returns the truncated timestamp or interval with a particular level of precision. The default timestamp for a date value is 00:00:00. The change is at COUNTER ||';';. id = table1. When an input value includes a time zone, Amazon Redshift uses the time zone to convert the value to UTC and stores the UTC value. datediff is always 1 number less than I need-5. These commands are preceeded with a backslash. asked Oct 30, 2018 at 20:06. select min (dateid), max (dateid) from sales where dateid between 1900 and 1910; min | max -----+----- 1900 | 1910. g. This works by converting the. Pramit is a Technical Content Lead at Chaos Genius. We started by testing the normal scan speed of the data set. CDT. Snowflake is a complete SaaS offering that requires no maintenance. 18. This is the documentation for the Amazon Redshift Developer Guide - amazon-redshift-developer-guide/r_DATEDIFF_function. createddate, Datediff (day, table1. MySQL does. AWS Redshift clusters require some manual maintenance. TableName WHERE datetime > '2017-02-09 00:00:00' AND datetime < '2017-06-09 00:00:00'; The above query Works with Redshift to fetch all the entries in a table. Hey guys, I am created a derived table in Looker and I understand it runs on redshift, as such, I trying to get something similar to below as an aggregated table: I have two tables: Customers and Orders I want to get Cust. trunc (created_at_date) between '2014-06-01' and '2014-06-30'; 3. Datetime types. In SSMS I would have done: SELECT DATEADD (yy, DATEDIFF (yy, 0, GETDATE ()), 0) AS StartOfYear. For a complete listing of all statements run by Amazon Redshift, you can query the SVL_STATEMENTTEXT view. 0 Kudos. The date function used to returns the difference between two date or datetime values as a given unit of duration. I know that I can do another query to then get the max ID but I would ideally like to just go by timestamp. 0. 1. format. The following example finds the difference in number. The best way to approach this requirement would be to Create a Scalar Python UDF - Amazon Redshift that takes an input of two dates, then outputs the difference. When selecting between Amazon Redshift and Google BigQuery, consider factors like performance, scalability, pricing, ease of use, security and integration with existing infrastructure. In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light). Redshift Create Table; Redshift DateDiff; ADVERTISEMENT. DATEDIFF ( datepart, expression1, expression2) datepartには、年、月、日、時、分、秒などの特定の粒度を指定し、expression1, expression2には日付の列、または、 timestamp の式を指定する。. Share. The simplest solution is to create from_unixtime () function: CREATE OR REPLACE FUNCTION from_unixtime (epoch BIGINT) RETURNS TIMESTAMP AS 'import datetime return datetime. 1. Use an interval literal to identify specific periods of time, such as 12 hours or 6 weeks. Getting the differences between two specified time values where the time is specified in the format of YYYY-MM-DD HH-MM-SS. 例えば、 12-31-2008 と 01-01-2009 の 2 つの日付間で年の差を計算しているとします。. 35. Sorted by: 0. The DateDiff function used in redshift has three arguments in it, we specify the dates for which we want to find the difference. When using the Redshift connector with DirectQuery and the DATEDIFF function I receive the following error: Release: April 2020 Product Version:In this post, we will look at Date functions in Redshift - specifically the Redshift DATEDIFF and DATEADD functions with syntax and practical use cases of using these functions. The DATETIME_DIFF arguments are datetimes, not dates; Snowflake, Redshift, and Databricks’ DATEDIFF functions support multiple date types such as dates and timestamps. Storage. Boolean type. While Amazon Redshift is performing maintenance, any queries or other operations that are in progress are shut down. row_number () over (partition by serialid, dateadd (dd,0, datediff (dd,0,dateadd (HH,8,createddatetime))) order by createddatetime desc) rnk. this code works but seems like the results are off by 1 day. The default timestamp without time zone (TIMESTAMP) format is YYYY-MM-DD HH:MI:SS. en datediff(&#. Another solution using CTE. Amazon Redshift interprets the DECADE or DECADES DATEPART based on the common calendar. Snowflake is a complete SaaS offering that requires no maintenance. Summary: in this tutorial, you will learn how to use the SQL Server DATEPART() function to extract a part of a date. 5, if diff is 8 hours - than 0. Redshift Create Table; Redshift DateDiff; ADVERTISEMENT. The default column name for the DATEDIFF function is DATE_DIFF. You can extract part of a timestamp by applying the EXTRACT. The CONVERT call is to force the second date to be parsed using date format 103 (i. I am running on AWS Redshift tables and I get the following error: [Amazon] (500310) Invalid operation: COALESCE types character varying and integer cannot be matched; 1 statement failed. Cells (i, 1). It would handle. Redshift is a fully managed data warehouse that exists in the cloud. SELECT table1. db_id matches the internal database object ID for each PG_DATABASE. 42 (Excluded 3 Saturdays & Sundays)I am using Redshift for my SQL scripts. Like most other SQL functions, you need to pass in arguments; for the DATE_PART function, you’ll pass in a date/timestamp/date field that you want to extract a date part from and specify the part you want removed. Interval literals. cust_id = t. The other is where the date is more than or equal to the date 3 months ago; so using the same data again would be 30 January to 30 April inclusive. timeworkedfrom >= DATEADD (MONTH, -6, DATEADD (month, DATEDIFF (month, 0, GETDATE ()), 0)) to this: AND be. Redshift provides 2 kinds of node resizing features: Elastic resize; Classic resize; Elastic Resize. A fully managed No-code Data Pipeline platform like Hevo Data helps you integrate and load data from 100+ different sources (including 40+ free sources) to a Data Warehouse such as Amazon Redshift or Destination of your choice in real-time in an effortless manner. TableName WHERE datetime > '2017-02-09 00:00:00' AND datetime < '2017-06-09 00:00:00'; The above query Works with Redshift to fetch all the entries in a table. DATEDIFF. Compare this with RDS, which reaches 100 gibibytes to 64 TB for most database engines. For this example, you create a table with START_DATE and END_DATE columns, insert rows that include null values, then apply an NVL. The parameterized snippet below can be used to find the number of weekdays between 2 dates. DATEDIFF with datepart function in Redshift SELECT DATEDIFF(year, '2021/08/25', '2027/08/25' ) AS DateDiff; -- Returns 6 DATEDIFF with datepart function equivalent in. Share. date_from) = 1. I can able to get the correct answer in Python (Spyder IDE - Py 3. AWS's Redshift provides the extract function: EXTRACT ( datepart FROM { TIMESTAMP 'literal' | timestamp } ) The datepart takes various values including epoch - you can therefore extract the epoch from a timestamp e. AM or PM. For example, to find the difference between two dates in weeks, use the below statement. Type compatibility and conversion. Consider SQL Server function to calculate the difference between 2 dates in weeks: SQL Server : -- Difference between Dec 22, 2011 and Dec 31, 2011 in weeks SELECT DATEDIFF ( week, '2011-12-22', '2011-12-31') ; -- Result: 1. dd/mm/yyyy), which makes me suspect that your SQL implementation is set up to parse them as some other format (e. Database code is version controlled. Hi Team, The formula below was built as a beastmode but would like to move it to dimensions, the backend. 1) JSON function – This is the function which was we have using with JSON data. Using Kafka as your data. 0. select *, cast ( (cast (begin_date as date) - cast (end_date as date) YEAR) as decimal (3,2)) AS year_diff from x. Specifically: start_date < '2016-01-01' is trying to compare a date with a varchar, but Amazon Redshift is smart enough to convert the varchar into a date format for comparison purposes. Type compatibility and conversion. Boolean type. El nombre predeterminado de la columna para la función DATEDIFF es DATE_DIFF. We can use multiple column or single column at one time to fetch data from table. For Amazon Redshift Serverless, some concepts and features are different than their corresponding feature for an Amazon Redshift provisioned data warehouse. The data that is used by the job depends on the data type of a particular column. If you want to get the difference between two dates in days (i. format A string literal that defines the format of the input string , in. Share. Piotr Findeisen Piotr Findeisen. -- Select [dbo]. For more information, see Date parts for date or timestamp functions. In the example the fixed_date is '2020-12-20' and I am using it my query. 15 between 2 values that are 1 year, 1 month and 15 days apart. date_from, evnt. With the argument ALL, the function retains all duplicate values from the expression for. 00 as FLOAT) <. 005479 (1 year + 2/365 years). The default Redshift date format is YYYY-MM-DD. createddate) AS age1 FROM table2 LEFT JOIN table1 ON table2. Number of weekdays between two dates - StartDate question. . Meridian indicator (for 12-hour clock) The default date format is YYYY-MM-DD. Review the query execution alerts and excessive disk usage. 53. For example, month truncates to the first day of the month. This guide provides examples of converting timestamps and offers insights into supported time zone names and abbreviations. Timestamp datatype in redshift will stores the maximum values up to the precision of six digits in fractional seconds. 1. Redshift clusters can be configured for different kinds of workloads as per the requirement. British/French, i. set timezone to ‘xxx36’; Examples. It has the ability to maintain consistent SLAs and improve the throughput by over 35 times simultaneously. Amazon Redshift interprets the DECADE or DECADES DATEPART based on the common calendar. I realize I cannot put the same thing in for the DATEDIFF parameters (it just doesn't make any sense), but I am unsure what else to do. *First need to sort both files: proc sort data=data_333; by client id; proc sort data=test_data; by client id; *then need to merge and get differences; Data Test; MERGE data_333 (in=a) test_data (in=b);Converting Valid Character Strings to Dates, Times, or Timestamps. Any user assigned a role with this permission attached must sign in the query editor with temporary credentials. Redshift MySQL Differences: Performance. SELECT (EXTRACT(epoch from age('2017-6-15', now())) / 86400)::intThe popular one here is DATE_DIFF(): DATE_DIFF() – get the difference between two dates in any specificity (days, years). Saved searches Use saved searches to filter your results more quicklyStrange SQLite does not have a DATEDIFF function. ; ExamplesThis will draw the distinct pairs of id's and dates out and rejoin them onto the dataset only where the joined dates are earlier than the row in question. In Redshift, you can use datediff () and arithmetics: select t. I've tried to execute as select AGE_UDF ('1994-04-04 20:10:52','2018-09-24 11:31:05'); in Redshift. Redshift's generate_series () function is a leader node only function and as such you cannot use it for downstream processing on the compute nodes. You were missing a closing semicolon inside the UPDATE statement. StartDate = CDate (. date_diff("unknown", timestamp without time zone, timestamp with time zone) does not exist So I guess that current_timestamp returns a timestamp with a timezone and getdate() a timestamp without. Mysql has a function called Week() where we can use the mode to get the desired result. A string literal that defines the format of the timestamp value. trunc (created_at_date) between '2014-06-01' and '2014-06-30'; 3. 0. month, week or hour, and it will return the truncated timestamp or interval with the level of precision. ERROR: column "yyyymm". 0. Collectives™ on Stack Overflow. For more information about how Amazon Redshift SQL differs from PostgreSQL, see Amazon Redshift and PostgreSQL. You can find explanations for each recommendation in the console, as described preceding. datepart. #Datediff redshift how to; #Datediff redshift how to. state = b. Need to set max_recursion_rows else redshift will stop you from doing too deep of a recursion. ID and Cust. The fully timestamp values contains default value as (00) for missing seconds. This function is especially useful for calculating intervals, such as the number of days between two. 2. As Spark doesn't provide the other unit, I use below method, select (bigint (to_timestamp (endDate))) - (bigint (to_timestamp (startDate))) as time_diff. DATEDIFF returnes the number of full weeks between the datetime values. sql loop with id, date, and 1 additional field (in redshift) The scenario is: A patient is taking multiple medications (denoted by ndc) Each medication has a fill date with a corresponding fill_nbr. 0'::character varying can simply be '0. usage_limit: character(150) List of usage limit IDs reached by the query. īelow, we’ll outline some of the slight differences in the implementation between some data. 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. You cannot specify the date. Por exemplo, suponha que você esteja calculando a diferença em anos entre duas datas, 12-31-2008 e 01-01-2009. date_trunc ( < date / time field > , < date part > ) A note on BigQuery: BigQuery’s DATE_TRUNC function supports the truncation of date types, whereas Snowflake, Redshift, and Databricks’. set timezone to ‘xxx36’; ISO-8601 Offset – The offset from UTC in the form ± [hh]: [mm]. For example, adding three months or 12 days to a starting date. select dateadd (m,30, '2008-02-28' ); date_add --------------------- 2008-02-28 00:30:00 (1 row) You can name date parts in full or abbreviate them. Redshift split from Postgres on V8. Unfortunately this. Elastic resize is the fasted way to resize the cluster. In the end, when comparing Amazon Redshift’s 2, 4, and 8 node DC2. In the expression DATEDIFF (yy, 1, 2), both 1 and 2 are converted into dates as per the above. Answer to How do I calculate age as YY from date of birth asStep 2: Add the Amazon Redshift cluster public key to the host's authorized keys file; Step 3: Configure the host to accept all of the Amazon Redshift cluster's IP addresses; Step 4: Get the public key for the host; Step 5: Create a manifest file; Step 6: Upload the manifest file to an Amazon S3 bucket; Step 7: Run the COPY command to load the dataHow to create a SQL Server Linked Server to Amazon Redshift. 7k 2 2 gold badges 53 53 silver badges 83 83 bronze badges. Internally Data Services reads both the date and the time when it runs a sysdate function. 2) Coalesce – Coalesce is the function name in redshift which returns first not-null value as a result. d[S+] Lists local user created tables, regular views, late-binding views and materialized. To convert a date to a string use the Redshift to_char function as below. I have a table with: user_id, plan_id, created_at, ended_at, (can be null)1. Trunc function can truncate only time part. This example assumes that the current date is June 5, 2008. Specifically, DATEDIFF determines the number of datepart boundaries that are crossed between two expressions. For a list of AWS services that Athena leverages. dateDiff takes two dates as arguments. The Overflow Blog CEO update: Giving thanks and building upon our product & engineering foundation. DATEDIFF. by the way, Just new in DBeaver. This question is in a collective: a subcommunity defined by tags with relevant content and experts. Question: How can I take a start timestamp (created_at) and end timestamp (ended_at) and add a column that adds 1 month to the start timestamp until the end timestamp. startDate: A DATE or TIMESTAMP expression. How to use Redshift DATEDIFF? 7. Seconds. NOTE: The table I applied the query on had column/field 'datetime' of type 'timestamp'. PostgreSQL - Date Difference in Months. Then, the last_value function will take last value per row and the distinct removes all irrelevant rows from the output. One of the toughest pitfalls of real-time data streaming is: how best to work with both real-time and historical data. To view a list of supported time zone names, run the following command. The DATETIME_DIFF arguments are datetimes, not dates; Snowflake, Redshift, and Databricks’ DATEDIFF functions support multiple date types such as dates and timestamps. TIME: Only the time part. md at master · awsdocs/amazon-redshift. Test Result (I tested it in Oracle 18c. Redshift Date functions: LAST_DATE function. Datediff with join returning not expected result. mwdb • 1 yr. Sorted by: 1. Variable, up to 128 bits for uncompressed DECIMAL types. how many days exist between date number one and date number two) you’d use something like DATE_DIFF(‘day’, ‘2019-01-01’, ‘2019-01-06’). date 2. Securely store your files in an S3 bucket like unlimited storage, and you can connect it with Cloudfront to serve your content on a CDN network. Count ----- 124. Automated snapshots retain all of the data required to restore a cluster from a snapshot. You should use Amazon Athena if you want to run interactive ad hoc SQL queries against data on Amazon S3, without having to manage any infrastructure or clusters. 1. Redshift Date functions: DATE_DIFF function. This function returns the count (as a signed integer value) of the specified datepart boundaries crossed between the specified startdate and enddate. Data warehouses like Redshift and Snowflake have a super useful DATEDIFF function – given two timestamps and a date part (hour, year, week, etc) it'll return how far apart they are. Follow edited Oct 30, 2018 at 20:07. Here its 0. SELECT DATEDIFF (week,'2019-01-01','2019-12-31') as numweeks; I need to analyze the time interval difference from two dates in Amazon-Redshift, for example: '2021-10-13 14:37:00' - '2021-10-13 12:00:00' = '02:37:00' or in case the days is different: Part of AWS Collective. CREATE TABLE ORDERS ( ID INT , PRODUCT CHAR. date_to) * 2) - CASE WHEN DATEPART(DW, evnt. If you want to do it day, do it following way select datediff(day,order_date,complain_date) as diff_in_day from your_table; You could use datediff function to update your table column time_duration. A date field or a call to another function that outputs a date. BigQuery also supports a separate DATE_DIFF function that will return the difference between two date types, unlike the DATETIME_DIFF that only supports the datetime type.