Date_trunc snowflake

SELECT COUNT(ORDER_DATE) as COUNT_ORDER_DATE, ORDER_DATE FROM ORDERS GROUP BY :datebucket(ORDER_DATE), ORDER_DATE ORDER BY COUNT_ORDER_DATE DESC; So could your query work if it was modified like this: SELECT date, address FROM database.table WHERE address = 'xyz' GROUP BY :datebucket(date), date

Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite.DATE_TRUNC (‘ [interval]’, time_column) The time_column is the database column that contains the timestamp you'd like to round, and [interval] dictates your desired precision level. You can round off a timestamp to one of …1 Answer. Sorted by: 2. It depends on what you want to achieve on the result. The timestamp data type always contains milliseconds. Suppose you have such a variable: set t = to_timestamp_ntz ('2021-12-28 14:25:36.300'); You can truncate the milliseconds and leave the same data type, you will still see zeros but not different values:ROW_NUMBER () function helps to return the unique row number within each row. For example, if I want to know specific data i.e. ‘John’ which is present in the 20th row, then the row_number will be displayed for that particular data is 20.Hi @Sriganesh Palani (TechMahindra Limited) , @hilda.davies (Snowflake) , thanks for your replies. I'm trying to load data by copying CSV files stored in AWS. It could happen that some string values present on them are bigger than 16 MB. In those case I would want just to truncate them to match the column length and complete the COPY statement.Usage Notes¶. The characters in characters can be specified in any order.. To remove whitespace, the characters must be explicitly included in the argument. For example, ' $.' removes all leading and trailing blank spaces, dollar signs, and periods from the input string. Note that this does not remove other whitespace characters (tabulation characters, end …

1. There is a simpler function here, DATE_TRUNC will allow you to convert dates to months. You can then convert to the format you'd like. WITH MY_CTE AS ( SELECT PRS_ID, DATE_TRUNC (MONTH, MIN (BGN_DATE)) AS MONTH_START FROM myTable WHERE EMP_STS = 'T' GROUP BY 1 ) SELECT TO_CHAR (MONTH_START, 'yyyy-mm') AS PERIOD, COUNT (PRS_ID) GROUP BY 1.Feb 8, 2023 · The function date_trunc is conceptually similar to the trunc function for numbers. date_trunc(field, source [, time_zone ]) source is a value expression of type timestamp, timestamp with time zone, or interval. (Values of type date and time are cast automatically to timestamp or interval, respectively.) field selects to which precision to ... Week Ending Date. I'd like to know or calculate the week ending date for a specific value. For instance, today is 7/16/2019 (Tuesday). The value I'm trying to get to is Friday's date, which is 7/19/2019 - so I can group on it and return weekly counts. I've used this formula in Excel and Access for more than 20 years:This is the date, time, or timestamp to which you want to add. For example, if you want to add 2 days to August 1, 2018, then this will be '2018-08-01'::DATE. If the data type is TIME, then the date_or_time_part must be in units of hours or smaller, not days or bigger. If the input data type is DATE, and the date_or_time_part is hours or ... Construction DATE_FROM_PARTS TIME_FROM_PARTS TIMESTAMP_FROM_PARTS Extraction DATE_PART DAYNAME EXTRACT HOUR MINUTE SECOND LAST_DAY MONTHNAME NEXT_DAY PREVIOUS_DAY YEAR YEAROFWEEK YEAROFWEEKISO DAY DAYOFMONTH DAYOFWEEK DAYOFWEEKISO DAYOFYEAR WEEK WEEKOFYEAR WEEKISO MONTH QUARTER Addition & Subtraction ADD_MONTHS

Syntax DATE_TRUNC( <date_or_time_part>, <date_or_time_expr> ) Returns The returned value is the same type as the input value. For example, if the input value is a TIMESTAMP, then the returned value is a TIMESTAMP. Usage Notes date_or_time_part must be one of the values listed in Supported Date and Time Parts.Part of AWS Collective. 2. Select date_trunc ('week',dateTime) Date_week, Max (Ranking) Runing_Total_ID from (select datetime, id , dense_rank () over (order by datetime) as Ranking from Table1) group by 1. This query is working for me to give me the running total of total IDs by week. But the week starts on Monday in Postgres by default.DATE_TRUNC (‘ [interval]’, time_column) The time_column is the database column that contains the timestamp you'd like to round, and [interval] dictates your desired precision level. You can round off a timestamp to one of …Function 4: Extract or Date Part. Here, Snowflake offers two functions — for whatever reason, ... Function 5: Date Trunc. The DATE_TRUNC is a similar use case but is not the same as extraction.

Safelite burlington.

In order to stiffen paper, coat both sides of the paper with a fabric stiffening product. Allow the product to dry overnight. A number of crafts, such as doily streamers and paper snowflakes, call for stiffened paper. Paper is fairly easy t...May 23, 2023 · The following example illustrates the use of the date parameter: DECLARE @d datetime2 = '1998-12-11 02:03:04.1234567'; SELECT DATETRUNC(day, @d); Here's the result: 1998-12-11 00:00:00.0000000 E. Columns and the date parameter. The TransactionDate column from the Sales.CustomerTransactions table serves as an example column argument for the date ... Specifies the date and time expressions to use for building a timestamp where date_expr provides the year, month, and day for the timestamp and time_expr provides the hour, minute, second, and nanoseconds within the day. Only valid for: TIMESTAMP_FROM_PARTS (when the TIMESTAMP_TYPE_MAPPING session …Collectives™ on Stack Overflow – Centralized & trusted content around the technologies you use the most.

Aug 30, 2023 · Notes. Valid units for unit are (case-insensitive): 'YEAR', 'YYYY', 'YY': truncate to the first date of the year that the expr falls in, the time part will be zero out. 'QUARTER': truncate to the first date of the quarter that the expr falls in, the time part will be zero out. DATE_TRUNC function is used to truncate a timestamp or date to a specific level of granularity, such as truncating a timestamp to the day, hour, minute, etc. TO_DATE function is primarily used to convert a timestamp or a string into a date.Are you going for a first date and you intend to make it spectacular? You don’t have to do what everyone does on their first date. If you want to set yourself apart from the crowd, try these unexpected first date ideas.TRUNCATE , TRUNC function Usage. If scale_expr is negative, then it specifies the number of places before the decimal point to which to adjust the number. For example, if the scale is -2, then the result is a multiple of 100. If scale_expr is larger than the input expression scale, the function does not have any effect.. If either the input_expr or the scale_expr is NULL, …I want to use date_trunc function in PostgreSQL on my datetime column to aggregate data in a week.. For example I need to get number of sales each week. The problem is date_trunc('week', datetime_column) function considers Monday as the week start day and some of my customers user different start day in calendar (like Saturday).. I …We would like to show you a description here but the site won’t allow us.0. My org is in the process of transitioning from Redshift to Snowflake and I would like to ask if there is a neater way of truncating a timestamp field to extract just the date out of it as I would do it in Redshift. Current best Snowflake query. select cast (date_trunc ('day',max (my_timestamp)) as date) from my_table. Equivalent Redshift …I'm looking for a way to truncate a timestamp to the nearest 5-minute boundary so, for example, 14:26:57 becomes 14:25:00. The straightforward way to do it is like this: date_trunc ('hour', val) + date_part ('minute', val)::int / 5 * interval '5 min'. Since this is a performance-critical part of the query, I'm wondering whether this is the ...Syntax TRUNCATE( <input_expr> [ , <scale_expr> ] ) TRUNC( <input_expr> [ , <scale_expr> ] ) Arguments input_expr The value or expression to operate on. The data type should be one of the numeric data types, such as FLOAT or NUMBER. scale_expr The number of digits the output should include after the decimal point. Dating is one of life’s best adventures. Unfortunately, it can also be difficult to navigate the pitfalls and disappointments that come with dating. But with experience, comes a certain amount of wisdom.1. As per Oracle docs, The TRUNC (date) function returns date with the time portion of the day truncated to the unit specified by the format model fmt. The value returned is always of datatype DATE, even if you specify a different datetime datatype for date. If you omit fmt, then date is truncated to the nearest day.

How to look back 12 months and to the start of the month on a filter. I have a where clause that is hard coded to look back at the last 12 months, from the first day of the current month last year. Today, 4/7/2023 would fall into the range below as would any day in April 2023. WHERE date BETWEEN '2022-05-01 00:00:00' AND '2023-04-30 23:59:59.999'.

28 mar 2022 ... date_trunc('SECOND', “TIMESTAMP1”). docs: DATE_TRUNC — Snowflake Documentation. Hope this helps, the data types depend on quantity or records ...Usage Notes¶. The characters in characters can be specified in any order.. To remove whitespace, the characters must be explicitly included in the argument. For example, ' $.' removes all leading and trailing blank spaces, dollar signs, and periods from the input string. Note that this does not remove other whitespace characters (tabulation characters, end …TRUNC. 日付、時刻、またはタイムスタンプを指定された部分で切り捨てます。. 例えば、タイムスタンプを四半期に切り捨てると、元のタイムスタンプの四半期の最初の日の午前0時に対応するタイムスタンプが返されます。. DATE_TRUNC の代替構文を提供します ...Summary. In this tutorial, we have learned some good alternatives to the date_trunc function. Note that, there are a lot of other functions available in MySQL that you can use according to your use case such as STR_TO_DATE (), TIME_FORMAT () etc. You can see all the available date-time functions on the MySQL dev blog.DATE_TRUNC. Tronque un DATE, TIME ou TIMESTAMP à la précision spécifiée. Notez que la troncation n’est pas la même chose que l’extraction. Par exemple : En tronquant l’horodatage jusqu’au trimestre, on obtient l’horodatage correspondant à minuit du premier jour du trimestre pour l’horodatage entré. EXTRACT¶. Extracts the specified date or time part from a date, time, or timestamp. Alternative for DATE_PART.Function 4: Extract or Date Part. Here, Snowflake offers two functions — for whatever reason, just choose one. ... Function 5: Date Trunc. The DATE_TRUNC is a similar use case but is not the ...Instead you need to “truncate” your timestamp to the granularity you want, like minute, hour, day, week, etc. The function you need here is date_trunc (): -- returns number of sessions grouped by particular timestamp fragment select date_trunc ('DAY',start_date), --or WEEK, MONTH, YEAR, etc count(id) as number_of_sessions from sessions ... Part of AWS Collective. 2. Select date_trunc ('week',dateTime) Date_week, Max (Ranking) Runing_Total_ID from (select datetime, id , dense_rank () over (order by datetime) as Ranking from Table1) group by 1. This query is working for me to give me the running total of total IDs by week. But the week starts on Monday in Postgres by default.

Move relearner emerald.

United seat map 777 200.

The following demonstrates the use of the functions WEEK, WEEKISO, WEEKOFYEAR, YEAROFWEEK, and YEAROFWEEKISO. The session parameter WEEK_OF_YEAR_POLICY is set to indicate that the first week of the year is the week that contains January 1st of that year. ALTER SESSION SET WEEK_OF_YEAR_POLICY = 1; SELECT '2016-01-02T23:39:20.123-07:00 ... Hello there, I have different results depending on wether my data is in a Table or a View in Snowflake. Our Snowflake Timezone is in UTC, and Metabase Localization is in America/Los_Angeles (running on Elastic Beanstalk in Oregon). You can reproduce it like this: Create a Table and a View with same timestamp in Snowflake CREATE OR …23.1k 3 33 46 Thanks! Looking for last day of prior quarter. I'm going to see if I can modify this to accommodate the following fiscal quarter end dates: Jan. 31, Apr. 30, July 31, Oct. 31DATE_TRUNC. La función DATE_TRUNC trunca un valor de fecha, hora o indicación de fecha y hora en la unidad de tiempo especificada. El esquema es SYSIBM. Una expresión que devuelve una serie de caracteres que no supera los 255 bytes y que, después de que se eliminen todos los espacios en blanco iniciales y finales, es una de las series de ...DATEPARSE is not supported on Hive variants. Only Denodo, Drill, and Snowflake are supported. DATEPART. Returns the name of the specified date part as an integer. Syntax: ... For example, when you truncate a date that is in the middle of the month at the month level, this function returns the first day of the month. Example: …Jan 12, 2023 · Date function in snowflake. Hi, How to get first day of the current year in snowflake without date_trunc function . Snowflake Community Questions. DATE. Collaboration With Snowflake. +1 more. Like. Answer. 1. I'm trying to extract the week number of the month for any given date. If the month starts on a Saturday, it should be labelled 0. Thereafter, the weeks will be labelled 1, 2, 3, ... For example, for Jan 2022, 1st Jan is Week 0, 2nd Jan is Week 1, 9th Jan is Week 2, 16 Jan is Week 3, 23 Jan is Week 4, and 30th Jan is Week 4.date_or_timestamp_expr. This is the date or timestamp expression to which you want to add a specified number of months. num_months_expr. This is the number of months you want to add. This should be an integer. It may be positive or negative. If the value is a non-integer numeric value (for example, FLOAT) the value will be rounded to the ... The date_trunc() function is used to truncate to specified precision. Syntax: date_trunc(text, timestamp) Return Type: timestamp. PostgreSQL Version: 9.3 . Pictorial Presentation of PostgreSQL …hace 3 días ... Learn the syntax of the date_trunc function of the SQL language in Databricks SQL and Databricks Runtime.In Oracle, TRUNC(datetime, unit) function allows you to truncate a datetime value to the specified unit (set zero time, set the first day of the month i.e).The default unit is 'DD' (truncation to a day). Snowflake also provides the TRUNC function, but it requires the unit to be specified (there is no default value) and unit values are different in Oracle and … ….

A note on BigQuery: BigQuery’s DATE_TRUNC function supports the truncation of date types, whereas Snowflake, Redshift, and Databricks’ <date/time field> can be a date or timestamp data type. BigQuery also supports DATETIME_TRUNC and TIMESTAMP_TRUNC functions to support truncation of more granular date/time types.Function DATE_TRUNC in Snowflake (Docs here) allows you to truncate a given timestamp to a given default unit of time, being available: 'YEAR', 'MONTH', 'DAY', 'HOUR', 'MINUTE' and 'SECOND'. As an example: DATE_TRUNC ('MINUTE', '2015-05-08T23:39:35.123') --> 2015-05-08T23:39:00.000'. How would we do it if we want to …Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about TeamsI think you want to use TO_DATE here along with LEFT: SELECT TO_DATE (LEFT (timestamp, 10), 'YYYY-MM-DD') AS modified_ts FROM yourTable; Note that if you don't require a bona fide date, but rather just a date string, then LEFT (timestamp, 10) alone should suffice. Share. Improve this answer.EXTRACT¶. Extracts the specified date or time part from a date, time, or timestamp. Alternative for DATE_PART. Jan 12, 2023 · Date function in snowflake. Hi, How to get first day of the current year in snowflake without date_trunc function . Snowflake Community Questions. DATE. Collaboration With Snowflake. +1 more. Like. Answer. Figure 3 Sample Query Result. To calculate the database storage for credit calculation, we need to find the average size per day for the month. This means that if the total storage used for the ...Date & Time Functions YEAR* / DAY* / WEEK* / MONTH / QUARTER Extracts the corresponding date part from a date or timestamp. These functions are alternatives to using the DATE_PART (or EXTRACT) function with the equivalent date part (see Supported …3 Answers Sorted by: 14 Snowflake supports date_trunc () for datatypes DATE, TIME, and TIMESTAMP: SELECT DATE_TRUNC (month, CURRENT_DATE ()) AS first_day_of_month; Share Improve this answer Follow edited Oct 13, 2022 at 21:43 Marco Roy 4,084 7 35 50 answered Sep 1, 2020 at 19:59 GMB 217k 25 84 135hace 3 días ... Learn the syntax of the date_trunc function of the SQL language in Databricks SQL and Databricks Runtime. Date_trunc snowflake, on s.bin_num=q.bin_num. and s.timestamp between date_trunc('second', q.start_time) and date_trunc('second', q.end_time) group by 1. Using the same dataset as above, this query 7 executed in 2.2 seconds, whereas the un-optimized version from earlier took 750 seconds. That's over a 300x improvement., In Oracle, TRUNC(datetime, unit) function allows you to truncate a datetime value to the specified unit (set zero time, set the first day of the month i.e).In SQL Server, you can use various expressions using CONVERT function to get the same result.. Oracle: ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS'; -- Get current …, EXTRACT¶. Extracts the specified date or time part from a date, time, or timestamp. Alternative for DATE_PART. , EXTRACT¶. Extracts the specified date or time part from a date, time, or timestamp. Alternative for DATE_PART., date_or_time_part must be one of the values listed in Supported Date and Time Parts. When date_or_time_part is week (or any of its variations), the output is controlled by the WEEK_START session parameter. When date_or_time_part is dayofweek or yearofweek (or any of their variations), the output is controlled by the WEEK_OF_YEAR_POLICY and WEEK ..., DATE_TRUNC. Tronque un DATE, TIME ou TIMESTAMP à la précision spécifiée. Notez que la troncation n’est pas la même chose que l’extraction. Par exemple : En tronquant l’horodatage jusqu’au trimestre, on obtient l’horodatage correspondant à minuit du premier jour du trimestre pour l’horodatage entré., How to look back 12 months and to the start of the month on a filter. I have a where clause that is hard coded to look back at the last 12 months, from the first day of the current month last year. Today, 4/7/2023 would fall into the range below as would any day in April 2023. WHERE date BETWEEN '2022-05-01 00:00:00' AND '2023-04-30 23:59:59.999'., 1. I'm trying to extract the week number of the month for any given date. If the month starts on a Saturday, it should be labelled 0. Thereafter, the weeks will be labelled 1, 2, 3, ... For example, for Jan 2022, 1st Jan is Week 0, 2nd Jan is Week 1, 9th Jan is Week 2, 16 Jan is Week 3, 23 Jan is Week 4, and 30th Jan is Week 4., This is the date, time, or timestamp to which you want to add. For example, if you want to add 2 days to August 1, 2018, then this will be '2018-08-01'::DATE. If the data type is TIME, then the date_or_time_part must be in units of hours or smaller, not days or bigger. If the input data type is DATE, and the date_or_time_part is hours or ... , Oct 29, 2019 · 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. Goal - create a date table, and show what day of the quarter it is for the next 20 years. , The date_trunc() function is used to truncate to specified precision. Syntax: date_trunc(text, timestamp) Return Type: timestamp. PostgreSQL Version: 9.3 . Pictorial Presentation of PostgreSQL …, DATE_TRUNC. La función DATE_TRUNC trunca un valor de fecha, hora o indicación de fecha y hora en la unidad de tiempo especificada. El esquema es SYSIBM. Una expresión que devuelve una serie de caracteres que no supera los 255 bytes y que, después de que se eliminen todos los espacios en blanco iniciales y finales, es una de las series de ... , 構文 TRUNC( <date_or_time_expr>, <date_or_time_part> ) 引数 date_or_time_expr これは、 DATE または TIMESTAMP に評価される式でなければなりません。 date_or_time_part 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。 戻り値 関数は常に DATEを返します。 完全な日付にします（年、月、日）。 切り捨てでは、月と日は削除されません。 代わりに、指定された期間の最も早い日付に設定します。, Snowflake date_trunc to remove time from date Ask Question Asked 4 years ago Modified 2 years, 8 months ago Viewed 12k times 4 I have snowflake column which contains date in yyyy-mm-dd hh:MM:ss format. I use the below function date_trunc ('DAY', '2019-09-23 12:33:25') Output : 2019-09-23 00:00:00 Expected as per documentation : 2019-09-23, @django Assuming your data set might look like data in below snowflake sample table for sub-query gendata . Database :SNOWFLAKE_SAMPLE_DATA. Schema : TPCH_SF10, Feb 22, 2022 · 1. I'm trying to extract the week number of the month for any given date. If the month starts on a Saturday, it should be labelled 0. Thereafter, the weeks will be labelled 1, 2, 3, ... For example, for Jan 2022, 1st Jan is Week 0, 2nd Jan is Week 1, 9th Jan is Week 2, 16 Jan is Week 3, 23 Jan is Week 4, and 30th Jan is Week 4. , If you want to get the start of the month of the "timestamp" value, there are easier way to do that: The result of that is a timestamp from which you can subtract the interval: date_trunc ('month', ' { { date.start }}'::timestamp) - interval '1 month'. with sample_data (input_date) as ( values (timestamp '2019-01-01 17:18:19'), (timestamp …, Jan 19, 2022 · Is there a simple way to return the last day of the most recent quarter in Snowflake? We use financial quarters with last days being: Jan. 31, Apr. 30, July 31, Oct. 31 Thanks! , Sep 22, 2023 · In your case both would work same as you are converting the timestamp to date and so would be the performance for conversion a they are metadata based results. We can evaluate the same using below sample and look at the query profile - select DATE_TRUNC( 'Day', '2023-09-22 00:56:36'::TIMESTAMP)::date; select TO_DATE('2023-09-22 00:56:36'); , In Oracle, TRUNC(datetime, unit) function allows you to truncate a datetime value to the specified unit (set zero time, set the first day of the month i.e).In SQL Server, you can use various expressions using CONVERT function to get the same result.. Oracle: ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS'; -- Get current …, date_part ( Optional) is the date part for which the last day is returned. Possible values are year, quarter, month, or week (or any of their supported variations). For details, see Supported Date and Time Parts. The default is month. When date_part is week (or any of its variations), the output is controlled by the WEEK_START session parameter., Syntax DATE_TRUNC( <date_or_time_part>, <date_or_time_expr> ) Returns The returned value is the same type as the input value. For example, if the input value is a TIMESTAMP, then the returned value is a TIMESTAMP. Usage Notes date_or_time_part must be one of the values listed in Supported Date and Time Parts., Notes. Valid units for unit are (case-insensitive): 'YEAR', 'YYYY', 'YY': truncate to the first date of the year that the expr falls in, the time part will be zero out. 'QUARTER': truncate to the first date of the quarter that the expr falls in, …, Call it like this, making sure that Snowflake recognizes those strings as dates: SELECT * FROM TABLE("fn_CreateHourLabels"('2021-03-01'::date,'2021-03-11'::date)) Share. Improve this answer. Follow answered Mar 13, 2021 at 1:50. Felipe Hoffa Felipe Hoffa. 55.5k 17 17 ..., TIMESTAMP_TRUNC is very handy for aggregating your data by a particular date_part, like HOUR, while also accounting for different timestamps. See the example below to see how you can aggregate by HOUR: SELECT SUM(number) AS total, TIMESTAMP_TRUNC (date, HOUR) AS hour FROM ( SELECT CAST('2021-02-04 12:50:01-7:00' AS …, How to look back 12 months and to the start of the month on a filter. I have a where clause that is hard coded to look back at the last 12 months, from the first day of the current month last year. Today, 4/7/2023 would fall into the range below as would any day in April 2023. WHERE date BETWEEN '2022-05-01 00:00:00' AND '2023-04-30 …, Syntax TRUNCATE( <input_expr> [ , <scale_expr> ] ) TRUNC( <input_expr> [ , <scale_expr> ] ) Arguments input_expr The value or expression to operate on. The data type should be one of the numeric data types, such as FLOAT or NUMBER. scale_expr The number of digits the output should include after the decimal point. , I want to use date_trunc function in PostgreSQL on my datetime column to aggregate data in a week.. For example I need to get number of sales each week. The problem is date_trunc('week', datetime_column) function considers Monday as the week start day and some of my customers user different start day in calendar (like Saturday).. I …, Date difference is 23, if you are counting number of different days. 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. As long as the timestamps are in different days, Snowflake counts the difference in days as 1, even if it's only 2 seconds …, 11 ene 2022 ... https://docs.snowflake.com/en/sql-reference/functions/date_trunc.html. Use the Above Funtion in Calculator Component, and then map the result ..., From the comments, you are using SQL Server 2019. DATE_TRUNC() isn't available to you as it is new in SQL Server 2022. If you just need the day number, use DATEPART() or cast to a date like this:--General example. SELECT DATEPART(day, GETDATE()) as [day]; -- Or, Just cast to a date., Jan 16, 2023 · on s.bin_num=q.bin_num. and s.timestamp between date_trunc('second', q.start_time) and date_trunc('second', q.end_time) group by 1. Using the same dataset as above, this query 7 executed in 2.2 seconds, whereas the un-optimized version from earlier took 750 seconds. That's over a 300x improvement. , DATE_TRUNC () function helps to truncate the given input data i.e. date, time, or timestamp. For example, If we applied truncate to hour, then from minutes it will set to 0 ( where as year, month, date and hours will remains constant ).