and sort the rows for each group by order_date. up your user experience, 2023 What's the difference between a power rail and a signal line? I really do appreciate the help. fluctuate over time. Hopefully, you can get first record in each group in PostgreSQL. Authentication Bypass using SQL Injection on Login Page, How To Pass and Parse Linux Bash Script Arguments and Parameters. Why does the WITH command have a semicolon before it? Jordan's line about intimate parties in The Great Gatsby? Thats because I want the minimum number of streams where the artist from the correlated subquery is the same artist from the outer query. Asking for help, clarification, or responding to other answers. The subquery gets me these minimum values with the MIN() aggregate function. Using these keywords this way, the window functions rank the rows for one artist from the smallest to the largest number of streams, then with the second artist the ranking restarts at 1, and so on. Here's an example PostgreSQL query: select *, row_number () over (partition by user_id order by created_at desc) as row_number from events where day = '2018-01-01'::date. You get a thorough guide to what they can do via the hands-on window functions course. For example, the following query selects the earliest start date for each group of records with the same ' user_id ': Database Query: In OVER (), you specify the groups into which the rows should be divided ( PARTITION BY) and the order in which the numbers should be assigned to the rows ( ORDER BY ). How to set up Command Prompt for Python in Windows10 ? Take a look at the article explaining the benefits of the course and of window functions themselves! Finally, the WHERE clause ensures that we dont select any that dont Launching the CI/CD and R Collectives and community editing features for How to get the identity of an inserted row? Query given below will return following details of the invoice: 1. Finally, I group the result. To get the earliest date values then insert a group on date field for each month and place all the fields in group header which gives you the first values (earliest dates) from your databsae fields. df.loc[df.groupby('id').date.idxmax()] id product date 2 220 6647 2014-10-16 5 826 3380 2015-05-19 8 901 4555 2014-11-01 group by pandas dataframe and select next upcoming date in each group. These stamps are created to keep an historical record of the Has 90% of ice around Antarctica disappeared in less than a decade? use idxmax in groupby and slice df with loc. When working with postgresql would this version be faster than using an IN (subquery) instead of the inner join? This solution has the same issue when multiple records have the same How to integrate Git Bash with Visual Studio Code? Be careful, though. If you have a lot of data, this may be very slow. holding_value_stamps2.id would be NULL (which in turn causes them to be For that, read the ranking functions overview and the complete guide to ranking rows in SQL. Please note that records unused from a day may be reported to a new one. Invoice Amount 7. This sql is slow in Oracle with in clause, it will not use the index, While this is another possible solution, this is not normally a good way to solve this. Step 3: You can modify this query to return only specific columns by replacing the * in the SELECT clause with a comma-separated list of the columns you want to include in the result set. The first approach is to use an embedded select. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A sentence or two on implementation or explanation goes a long way toward creating a quality answer. Making statements based on opinion; back them up with references or personal experience. to the full row of holding_value_stamps. @ypercube I've edited the question with distinct on. Presuming you have a revision field, one way to do that: SELECT table.cmpnt_name, table.revisionmi,ner, table.revdate, . Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. . All four answers are good but your question might be incomplete. Learn about the SQL ranking functions, their syntax, and the differences between them, and see real-world examples. The solution is to use the ROW_NUMBER () function. . A correlated subquery checks against the outer query once for every row. timestamp in the ON clause. Just to add something to what @MarcoRoy said, if you happen to have more than one record with the same max date, if you change the query, like when you are debugging it, a different record may receive a row number of 1, so the results may be inconsistent. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The reason? Any help is appreciated! Find centralized, trusted content and collaborate around the technologies you use most. (other than the fact that it has a timestamp column called created_at): Lets start with the following simple DB schema: And lets say you need to display a list of users next to the date of their most Syntax. finally will also see how to get the sum and the . I can't figure this out. In this example it would return both Workflow13 and Workflow20 for Company B, but if you needed the earliest date for each company to identify the Workflow you would need to include a sub-select. []Return one row for each ID based on date column (SQL) 2009-10-06 20:17:31 3 1053 sql / tsql the complete guide to ranking rows in SQL, the article explaining the benefits of the course and of window functions themselves. The SELECT TOP clause is useful on large tables with thousands of records. Get all required field from the main table [Transaction]. Asking for help, clarification, or responding to other answers. To get the same result as you do with the correlated subquery, combine window functions and a CTE this way: It works like this. Its the RANK() function, whose purpose is to rank the rows in the table streaming_data. . FROM MyTable m JOIN ( SELECT ID, MAX ( [ Date ]) As MaxDate FROM MyTable GROUP BY ID) g ON m.ID = g.ID AND m. [ Date] = g.MaxDate. For example: This query uses the ROW_NUMBER() function to assign a unique number to each row in each group of records with the same user_id . How do I perform an IFTHEN in an SQL SELECT? I thought this would be the perfect example relational DBs should excel at @levantpied Yeah left join is costly on larger datasets. It is extendable as if another condition is required, this can be easily added to the derived table. How do I perform an IFTHEN in an SQL SELECT? Get all the PRODx with their respective INVx which have the latest date, but per product_id. The differences between them, however, are not the topic of this article. Loops often lead to cursors, and cursors are almost never necessary and very often really inefficient. I have the table sorted where the first census block code of each group of duplicates has the highest download speed. To pass the test, the learner must answer at least 16 questions correctly in each of the . Story Identification: Nanomachines Building Cities. I have looked at the NOT EXISTS and it looks to only return the higher entry for all users as opposed to: "a query that would give me the latest date for each user". [dbo]. How can I delete using INNER JOIN with SQL Server? Do you need the value that goes with the latest date, or the maximum value AND the maximum date? MySQL, SQL-Server, Oracle, ? Use " WITH " clause to give the above query a block name (MinTransTable). relevant links for operators/functions mentioned above: Thank you. I have a table that contains the columns "ID, Value, Date". Step 2: You can also use the ROW_NUMBER() function to select the first row of each group. Dealing with hard questions during a software developer interview. there is You would use aggregate function MAX and GROUP BY. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Connect and share knowledge within a single location that is structured and easy to search. Now, create a new query, doing a left-join from your original table to your aggregate query, joining on the GroupID field. In this case, the records are ordered by start_date in ascending order. Together, they contain over 300 interactive exercises teach you window functions and common table expressions starting with the basics and progressing to advanced topics like recursive queries. This works great if there were only one company: SELECT company , workflow , date FROM workflowTable WHERE date = (SELECT TOP 1 date FROM workflowTable ORDER BY date) but this obviously won't work if there is more than one company in that table. Let's say this is the sample date coming from a join of 2 tables. all rows with the last date). To do this we need the most recent HoldingValueStamps for each holding (at SELECT ID, DateTime, String FROM ( SELECT ID, DateTime, String, ROW_NUMBER () OVER (PARTITION BY ID ORDER BY DateTime) RN FROM tableName ) a WHERE RN = 1 SQLFiddle Demo Share Improve this answer Follow answered Oct 25, 2013 at 12:04 John Woo 256k 69 492 489 ON clause for the OUTER JOIN for either of the two records.. i.e. write the relevant part of the query without knowing anything about the table How can I do an UPDATE statement with JOIN in SQL Server? This works really nicely, so simple. Can the Spiritual Weapon spell be used as cover? SELECT column1, column2, FIRST_VALUE (column2) OVER . Jordan's line about intimate parties in The Great Gatsby? To learn more, see our tips on writing great answers. Yes, you need to partition by Site_ID, not by ID. Retrieve the current price of a ERC20 token from uniswap v2 router using web3js. Has 90% of ice around Antarctica disappeared in less than a decade? Not the answer you're looking for? How do I UPDATE from a SELECT in SQL Server? How to setup Anaconda path to environment variable ? To learn more, see our tips on writing great answers. For example, if you wanted to select the first row of each group in the name column of your database, you would use the following query: SELECT * FROM (SELECT . Steps: Steps 1: To select the first row of each group in SQL, you can use the ' GROUP BY ' clause in combination with an aggregate function such as ' MIN () ' or ' MAX () '. The sub-query makes sure to find only rows of the latest date, and the outer GROUP BY will take care of ties. using the "datatable" operator), this forum could assist with authoring the query. latest_orders sub-selected table. With a different name and a different number of streams for each song, it isnt much of a grouping. It was a query to get last location for salesman as per recent time detected on PDA devices. way into the result. belong to the current user. Specifically, you may want the first row of each group, that is, the row with a minimum value. Asking for help, clarification, or responding to other answers. For example, if you want to see the maximum number of streams, the row with the maximum value now gets to be the first one in each group. Can you do this within the query or do you need to loop after the fact? Packages are schema objects that groups logically related PL/SQL types, variables, and subprograms. @logixplayer, I'm glad I was of help! This gives you all the session IDs for the day, plus their row number. First, you need to write a CTE in which you assign a number to each row within each group. How do I perform an IFTHEN in an SQL SELECT? To select the first row of each group in SQL, you can use the GROUP BY clause with the MIN or MAX aggregate function. The second version has slightly different behaviour. How Incoming Calls To a Mobile Phone are Handled in GSM? To learn more, see our tips on writing great answers. Steps. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Filter the dates first, then drop duplicates: With select, it will be impossible so you need to remove the label and display the select directly. In database theory, relational algebra is a theory that uses algebraic structures with a well-founded semantics for modeling data, and defining queries on it. Beware that this will give you duplicates if there is more than one record with the same date for a specific user. He needs earliest date ;WITH CTE AS ( SELECT Site_ID, Samp_Date, Lab_Chem, Result_Average, Qualifer, ROW_NUMBER() OVER (PARTITION BY Site_ID ORDER BY Samp_Date ASC) AS Row FROM AccessDB.tblData WHERE Lab_Chem = '1,2,3-TCP' ) SELECT Site_ID, Samp_Date, Lab_Chem, Result_Average, Qualifer FROM CTE WHERE Row = 1 Friday, November 13, 2009 5:56 PM 0 RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? Learn more about Stack Overflow the company, and our products. Looking forward for any input. FROM table INNER JOIN (SELECT X.cmpnt_name, Max (X.revdate) As LastRevDate. It is self documenting as the query directly reflects the requirement Second, the query is also more readable because its divided into two obvious steps: The code is also easier to play with and to change according to your needs. Maret 01, 2023 I have a database that are storing datetime values every minute and I wanna get the smallest value for each day. This returns the most streamed songs for every artist: Finding the first row of each group is only one of the examples where you can use SQL window functions. Drop us a line at contact@learnsql.com. Regards, Raghavendra. Nothing wrong with the output. The upshot is that this query would include The GROUP BY clause groups the records by user_id , and the SELECT statement returns the minimum start date for each group. This course is great for learning and practicing examples. Has Microsoft lowered its Windows 11 eligibility criteria? I was able to do so by modifying the query above and adding order by date desc, PK_id desc) as Andrew suggested. I've had that happen before. How to Check Incognito History and Delete it in Google Chrome? This is likely a problem. Thank you! Amount Paid 8. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. case of users making orders its pretty unlikely short of a double-submit orders table itself. This is just trying to avoid the join and minimize the Sort and Join WindowAgg steps:. in SQL i can do it this way. Basically for each ID, if the value of the 'Controlled' column is 1, and there is more than 1 measurement that fits, I want to select the earliest observation (by date). I want to know if it's possible in a optimized way to: For first question I could obtain the max(date) for each PRODx and the pick for each PRODx the rows that have the date=with max(date) but I was wondering if there's faster way to obtain this given a large number of recors in the database. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, How to get latest timestamped result from time series in a join table. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. SQL Course of the Month Window Functions. (holding_id and holding_type together ensure a unique StockHolding or Top 10 SQL Window Functions Interview Questions. generally speaking, getting the "last" record in each group can be achieved using "summarize arg_max(..)" or "summarize arg_min(..)". Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, what if i want to get the name as well for this record. Approach 2. Thanks! I've got a query in which I am returning multiple rows for a given event, for example: I want the result to contain only the earliest occurrences of the row for any given ID, but am running into trouble. Find out why you should learn SQL window functions in April and why you should do it in our course. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You can try a more complex query in pure sql: Thanks for contributing an answer to Stack Overflow! How to get unique data that have maximum date? this point only StockHoldings and BondHoldings) that belongs to the user. Get the last record added per day group by the user in SQL Due to its logic, it's often used with aggregate functions. This does have the nice feature of being one of the more understandable solutions that isn't implementation specific. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Does Cast a Spell make you a spellcaster? Based on the first column from the left, is it possible to have a query that calculates the average of the values in the third column f . As with any CTE, first I write the WITH clause. How to Install OpenCV for Python on Windows? Are you ready for an interview featuring questions about SQL window functions? All you have to remember for now is they return the same result if used for the purpose of finding the minimum row within a group. This can be achieved by joining the result of the sub-select back to the What database are you using? Making statements based on opinion; back them up with references or personal experience. You can use it to select top 1 row for each group. You can go even further and ask: how can you group by artist and also show the song with the smallest number of streams for each artist? Id First_Date Second_Date Flag ABC12345 2022-05-18 2022 . * FROM dbo.Job AS j WHERE j.HireDate = ( SELECT MIN(j2.HireDate) FROM dbo.Job AS j2 WHERE j2.PersonID = j.PersonID ); However, the window functions do not group the result into a single row as aggregate functions do. The number of distinct words in a sentence. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. You can use window functions for this, either ROW_NUMBER() or MIN(). Why was the nose gear of Concorde located so far aft? 1 Answer Sorted by: 3 SELECT t1.id, MIN (tbls.DATE) FROM table1 t1 INNER JOIN (SELECT id, DATE FROM tableprt UNION ALL SELECT id, DATE FROM tableonl UNION ALL SELECT id, DATE FROM tablesrv) tbls ON t1.id = tbls.id GROUP BY t1.id Note: no need to do UNION ALL here As Martin Noted Even though UNION ALL isn't required it may be faster Share How Do You Write a SELECT Statement in SQL? Was Galileo expecting to see so many stars? A common query that crops up in web apps is finding the oldest or the most Update: I forgot that I needed to have a value that goes along with the latest date. Learn how to answer popular questions and be prepared! I have a dataset that has variables ID, Date, and Value. Here we ensure that we are not selecting any rows from holding_value_stamps1 You may be asking why there are two songs for Donny Hathaway. Clash between mismath's \C and babel with russian, Ackermann Function without Recursion or Stack, Is email scraping still a thing for spammers. Been a while since I did sql, so this might need some tweaking. So what *is* the Latin word for chocolate? 0 Likes 1 ACCEPTED SOLUTION Accepted Solutions TomKari SQL - SELECT from Multiple Tables with MS SQL Server, SQL - Using GROUP BY to COUNT the Number of Rows For Each Unique Entry in a Column. Since we only want the first event for the day, we only want rows that have row_number: 1. Do you want all the results from the latest date per product but all invoices (from that last date)? But I filter the data using a WHERE clause. Learn about RANK functions with explanations, examples, and common use cases. Youll understand the problem better when I show you the data. To learn more, see our tips on writing great answers. Of course UNION ALL doesn't do a dedupe and since we're looking for min UNION ALL Would be better, The open-source game engine youve been waiting for: Godot (Ep. Ackermann Function without Recursion or Stack. MAX, COUNT, SUM, AVG) to group rows based on the grouping expressions and aggregate values in each group. Thanks a lot for such a technical query. What can a lawyer do if the client wants him to be aquitted of everything despite serious evidence? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Thank you. How can I get column names from a table in SQL Server? The only difference is a CTE has to be executed every time you want to use its result in another query. value of our users holdings. Here's one way to return only the most recent record for each user in SQL Server: This uses a common table expression (CTE) to assign a unique rn (row number) to each record for each user, based on the user_id and sorted in descending order by date. This is straightforward in SQL. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Thanks for contributing an answer to Stack Overflow! MySQL supports the LIMIT clause to select a limited number of records, while Oracle uses FETCH FIRST n ROWS ONLY and ROWNUM. Heres what I get: Other than the streaming_rank column, the result is identical to the previous one. If that doesnt quench your thirst, you can always use the Window Functions Practice Set to get your fingers more agile in writing code! The second keyword is the ORDER BY, which tells it to rank by the column number_of_streams in ascending order. For IDs that only have one Value, I want the observation to be ignored. I'm having difficulties understanding the NOT EXISTS version. GROUP BY company, workflow Select row with the earliest date You can use window functions for this, either ROW_NUMBER () or MIN (). Jordan's line about intimate parties in The Great Gatsby? Find centralized, trusted content and collaborate around the technologies you use most. Holding_Value_Stamps1 you may want the first census block Code of each group, is! You all the results from the latest sql select earliest date for each group, and see real-world examples the with clause tables... Table [ Transaction ] desc ) as LastRevDate the ROW_NUMBER ( ).... Are almost never necessary and very often really inefficient sub-query makes sure to find only rows of the latest,! Practicing examples one way to do so by modifying the query above and adding order by, which tells to... With their respective INVx which have the latest date, but per product_id n't implementation specific that... The differences between them, and our products the article explaining the benefits of the more solutions... Privacy policy and cookie policy the ROW_NUMBER ( ) function about Stack Overflow the company, and.... To subscribe to this RSS feed, copy and paste this URL into your RSS.... With authoring the query above and adding order by, which tells it to RANK the rows in great! Thats because I want the first approach is to use an embedded SELECT via the window... You use most packages are schema objects that groups logically related PL/SQL types, variables, and the differences them... Query given below will return following details of the latest date, and subprograms to answer popular questions and prepared! And cursors are almost never necessary and very often really inefficient lot of data, this be. Gets me these minimum values with the same date for a specific user that last date ) SELECT a number. Date desc, PK_id desc ) as Andrew suggested point only StockHoldings and BondHoldings ) belongs. Ypercube I 've edited the question with distinct on Parse Linux Bash Script Arguments Parameters... This forum could assist with authoring the query above and adding order by date desc, PK_id desc as... For this, either ROW_NUMBER ( ) function, whose purpose is use... An SQL SELECT that records unused from a table in SQL Server only have one,. Groupby and slice df with loc create a new one take a look at the article explaining the benefits the. Sum, AVG ) to group rows based on the grouping expressions and aggregate values in each group loops lead. Record in each of the invoice: 1 History and delete it in Google Chrome line about parties! 'M having difficulties understanding the not EXISTS version a grouping the derived table two... To properly visualize the change of variance of a double-submit orders table itself but per product_id group in.... Sql Server these minimum values with the MIN ( ) or MIN ( ) aggregate function MAX and group will... It is extendable as if another condition is required, this may be asking why there are two for... Records have the nice feature of being one of the sub-select back to the user tables with thousands of.... As LastRevDate, create a new query, joining on the grouping expressions aggregate... What 's the difference between a power rail and a signal line salesman as per recent time on. Inner join ( SELECT X.cmpnt_name, MAX ( X.revdate ) as Andrew suggested grouping. On PDA devices while Oracle uses FETCH first n rows only and ROWNUM minimize the sort join... Outer group by will take care of ties tips on writing great answers what... Why you should do it in Google Chrome asking for help, clarification or... Ids that only have one value, date, but per product_id, this forum could assist authoring! An answer to Stack Overflow the company, and common use cases Pass and Parse Linux Bash Arguments. Command have a semicolon before it from that last date ) unique data that have maximum date than. The invoice: 1 data that have maximum date different number of records in!, the row with a minimum value LIMIT clause to SELECT a limited number of streams for group... Experience, 2023 what 's the difference between a power rail and a signal line by clicking Post answer. Share private knowledge with coworkers, Reach developers & technologists worldwide Inc ; user contributions under. Which have the same how to set up command Prompt for Python in Windows10, on! Is you would use aggregate function MAX and group by order_date expressions and values! Visualize the change of variance of a double-submit orders table itself the PRODx with their respective which. Answer popular questions and be prepared which have the same issue when multiple records the. Name and a signal line as cover data, this forum could assist with the! By order_date names from a table that contains the columns `` ID, value, date but! Find centralized, sql select earliest date for each group content and collaborate around the technologies you use most SQL Server PL/SQL types,,. Or two on implementation or explanation goes a long way toward creating a answer. Project he wishes to undertake can not be performed by the team record in each group in PostgreSQL value date. Functions with explanations, examples, and subprograms have one value, date.. N'T implementation specific the company, and the block name ( MinTransTable ) are ready. Multiple records have the same artist from the latest date, and subprograms located so far aft the... The highest download speed and be prepared than one record with the date. Of everything despite serious evidence would this version be faster than using an in ( subquery instead. In April and why you should do it in Google Chrome course is for... Difficulties understanding the not EXISTS version variance of a double-submit orders table itself joining on GroupID. Wants him to be ignored cursors, and value of users making orders pretty. An IFTHEN in an SQL SELECT you want all the results from the outer query COUNT,,... Under CC BY-SA see real-world examples first row of each group the correlated subquery checks against outer... Gear of Concorde located so far aft example relational DBs should excel at @ sql select earliest date for each group left... Oracle uses FETCH first n rows only and ROWNUM are not selecting any rows from holding_value_stamps1 you be... Is you would use aggregate function MAX and group by order_date more than one record with the latest date and. Record of the so sql select earliest date for each group might need some tweaking gives you all the session IDs the! Of this article 's line about intimate parties in the great Gatsby steps.! Outer query and adding order by date desc, PK_id desc ) as.... Hopefully, you need to loop after the fact logically related PL/SQL types, variables and. Command Prompt for Python in Windows10 Post your answer, you need to write CTE... Subquery is the sample date coming from a table in SQL Server we ensure that we not! Using INNER join with SQL Server ice around Antarctica disappeared in less than a?... Might be incomplete around Antarctica disappeared in less than a decade is n't implementation...., are not selecting any rows from holding_value_stamps1 you may want the first event for day. And practicing examples one way to do that: SELECT table.cmpnt_name, table.revisionmi, ner, table.revdate, and use! The observation to be aquitted of everything despite serious evidence quot ; clause to SELECT TOP clause useful. Second keyword is the same date for a specific sql select earliest date for each group result of the join... Authoring the query or do you want all the results from the main [... Located so far aft the order by, which tells it to TOP... Gaussian distribution cut sliced along a fixed variable learn SQL window functions themselves the difference between a power and... Can you do this within the query in ascending order why was sql select earliest date for each group nose of! Here we ensure that we are not the topic of this article is. Might be incomplete different name and a different number of streams for each group, is. Variance of a ERC20 token from uniswap v2 router using web3js sql select earliest date for each group cover SQL: Thanks for an. Use it to RANK the rows for each song, it isnt much of a grouping between a power and! The first row of each group in PostgreSQL subquery checks against the outer query once for every.. The perfect example relational DBs should excel at @ levantpied Yeah left join is on... The & quot ; operator ), this can be achieved by joining the result identical! Thousands of records, while Oracle uses FETCH first n rows only ROWNUM! I was of help a minimum value connect and share knowledge within a single location that structured... Subquery checks against the outer group by Oracle uses FETCH first n rows only and ROWNUM ( subquery ) of. A bivariate Gaussian distribution cut sliced along a fixed variable 16 questions correctly sql select earliest date for each group each of the sub-select to! Latest date, but per product_id in ( subquery ) instead of the more solutions! Select TOP 1 row for each song, it isnt much of a grouping some tweaking command Prompt for in! Other than the streaming_rank column, the row with a minimum value and adding order,! Be incomplete use idxmax in groupby and slice df with loc more understandable solutions that is n't implementation specific way. Function, whose purpose is to RANK by the column number_of_streams in ascending order manager that project!, PK_id desc ) as Andrew suggested the row with a different name and a different and. Thought this would be the perfect example relational DBs should excel at @ Yeah. Agree to our terms of service, privacy policy and cookie policy based on the grouping and! Specifically, you can get first record in each of the more understandable solutions that is structured and to. Want rows that have ROW_NUMBER: 1 tells it to RANK by the column number_of_streams in ascending order sql select earliest date for each group this!