The best answers are voted up and rise to the top, Not the answer you're looking for? How to set up Command Prompt for Python in Windows10 ? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Once there is a row which is not excluded (example above would be fifth record), then it would check the next row against this until the end. Loops often lead to cursors, and cursors are almost never necessary and very often really inefficient. Making statements based on opinion; back them up with references or personal experience. With the example data you provided, use this query: This is similar to one of the answers above, but in my opinion it is a lot simpler and tidier. 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). When a FILTER clause is attached to an aggregate . Loops often lead to cursors, and cursors are almost never necessary and very often really inefficient. Ill show this only with ROW_NUMBER(), but you can do the same with RANK() and DENSE_RANK(). In fact, I ended up reading about CASE statements for 15 minutes before I said "Screw it, someone on SO knows how to answer this." Group by the GroupID field, and choose the "Min" option for the RecordDate, to return the earliest date for each query. How to Install and Run Apache Kafka on Windows? 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. the orders that match the user_id and the created_at timestamp of the If you accept that the sub-select will This is a perfect use-case for DISTINCT ON - a Postgres specific extension of the standard DISTINCT: Reset identity seed after deleting records in SQL Server. I've tried using a nested select that returns the earliest tray date, and then setting that in the WHERE clause. Use a subquery to find the latest date for each group of cmpnt_name. Making statements based on opinion; back them up with references or personal experience. Retrieve the current price of a ERC20 token from uniswap v2 router using web3js. Has Microsoft lowered its Windows 11 eligibility criteria? Lets look at another, slightly more We also need to be able to tell the user the current value of their portfolio. To get the whole row containing the max date for the user: This one should give you the correct result for your edited question. How to Install Jupyter Notebook on MacOS? I should be getting at least 40 records. This course is great for learning and practicing examples. Even though I get the correct result, I generally dont recommend using correlated subqueries for this task. 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 query selects all rows from yourTable where the value in columnName is equal to the minimum value of columnName in each group defined by groupColumnName . Applications of super-mathematics to non-super mathematics. DISTINCT clause on user_id in the above example would do just that. What's the difference between a power rail and a signal line? The second approach is to use an exclusion join. In addition to the blogs I pointed you too, you may check this blog. Update: I forgot that I needed to have a value that goes along with the latest date. The first way to find the first row of each group is by using a correlated subquery. Welcome to StackOverflow and thanks for attempting to help. To learn more, see our tips on writing great answers. Rename .gz files according to names in separate txt-file. Query given below will return following details of the invoice: 1. Theoretically Correct vs Practical Notation. Payment Currency 6. Presuming you have a revision field, one way to do that: SELECT table.cmpnt_name, table.revisionmi,ner, table.revdate, . Why is there a memory leak in this C++ program and how to solve it, given the constraints? It was a query to get last location for salesman as per recent time detected on PDA devices. Here is the same code as before, only the window function changes to ROW_NUMBER(): As I said, the result is a bit different: Instead of two Donny Hathaway songs with minimum streams, I just get To Be Young, Gifted And Black.. Why does Jesus turn to the Father to forgive in Luke 23:34? Heres what you need to know about SQL RANK all in one place. The following is the most up-to-date information related to Jquery datatable get row id from button click asp.net mvc . . all of the fields we used in the GROUP BY as well as the selected created_at FROM table INNER JOIN (SELECT X.cmpnt_name, Max (X.revdate) As LastRevDate. thoughtbot, inc. Window functions + common table expressions. This is straightforward in SQL. This gives you all the session IDs for the day, plus their row number. Since we only want the first event for the day, we only want rows that have row_number: 1. Has 90% of ice around Antarctica disappeared in less than a decade? 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? With select, it will be impossible so you need to remove the label and display the select directly. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? . A totals query is a select query that uses aggregate functions (such as Group By, Min, Max, Count, First, and Last) to calculate values for each output field. What does a search warrant actually look like? Do EMC test houses typically accept copper foil in EUT? what are some ways to get the single earliest date for each id from all 3 tables plus the name of the id that's in table1? Thank you! Can the Spiritual Weapon spell be used as cover? SQL: Select most recent date for each category, The open-source game engine youve been waiting for: Godot (Ep. Its in the OVER() clause. For instance, Ontario's G1 licence test contains two sections, each with 20 multiple-choice questions. Learn how to use the SELECT syntax in the SQL language in Databricks SQL and Databricks . How do I get the query builder to output its raw SQL query as a string? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Not the answer you're looking for? Hopefully, you can get first record in each group in PostgreSQL. Every minute well create a HoldingValueStamp with the current value of your Making statements based on opinion; back them up with references or personal experience. To do that, you can use a common table expression: with cte_sessions as ( select us.user_id, us.session_id, s.start_date, s.end_date, row_number () over (partition by user_id order . This probably wouldn't work if multiple users had orders on the same date; what if brad and bob both had an order on January 2nd? Does Cast a Spell make you a spellcaster? Making statements based on opinion; back them up with references or personal experience. The number of distinct words in a sentence. For example, the following query selects the earliest start date for each group of records with the same ' user_id ': Database Query: These stamps are created to keep an historical record of the A problem may surface when you want to select several columns but only one row from each group. You know, functions like MIN(), MAX(), SUM(), COUNT(), AVG(), etc. SQL Course of the Month Window Functions. Connect and share knowledge within a single location that is structured and easy to search. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Find centralized, trusted content and collaborate around the technologies you use most. To learn more, see our tips on writing great answers. Currently whenever I execute this query output result is showing multiple IN & Out entries as employees Punch-In & Punch-out many times in . Next, we just need to use the above result to select rows where row_number=1. A small one if you are SQL to return earliest date. 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 . all rows with the last date). I use a WHERE clause to get only the results where the number_of_streams is equal to the minimum number of streams for this artist. Why was the nose gear of Concorde located so far aft? and I wanted to run a sql query to get the record where id = 2 with the earliest date in the data set. Unfortunately, we cant select the value field from this query You get a thorough guide to what they can do via the hands-on window functions course. Worth clarifying which Sybase product / version. The number of distinct words in a sentence. I really need to learn more about CTE, I've never really messed with it. In the first SELECT statement, the window function appears immediately. no record with a created_at that is greater than their own. How can I recognize one? 10 shares of AAPL. Clash between mismath's \C and babel with russian, Ackermann Function without Recursion or Stack, Is email scraping still a thing for spammers. Using window functions (works in Oracle, Postgres 8.4, SQL Server 2005, DB2, Sybase, Firebird 3.0, MariaDB 10.3) select * from ( select username, date, value, row_number () over (partition by username order by date desc) as rn from yourtable ) t where t.rn = 1 Share Improve this answer Follow edited Aug 27, 2018 at 6:20 a_horse_with_no_name Both songs have the same smallest number of streams, so the output shows them both. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What are the options for storing hierarchical data in a relational database? rev2023.3.1.43269. So I want the final result to look like this. For example, you may want to use the DENSE_RANK() functions instead of RANK() to get the same result as above: Both functions returns all the rows that are tied (i.e., have the same rank), so they are ideal if you want to show all the rows with the same minimum value. Youll understand the problem better when I show you the data. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Work with open item or selected . It uses the values from the outer query, that is, the values from the query its nested into. This is straightforward in SQL. GROUP BY exists to solve this problem: What if you wanted to display the users name instead of the id? rev2023.3.1.43269. (SQL) and Transact-SQL (T-SQL) 22, Aug 19. But what if you want to show song names and the number of streams, too? The first approach is to use an embedded select. How to Assign a Successive Number to Each Row in SQL Server? 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 ). This gives us all the event IDs for the day, plus their row_number. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? For this I have created new table in SQL database & written below query. 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 What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? Not the answer you're looking for? The second approach for selecting the first row of each group is to combine window functions and common table expressions. Consider the following example: . How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Prepare for Your Knowledge TestsCanadian written driving tests differ slightly across each province in terms of their content and number of questions. You can use a correlated subquery to find the minimum row of each group in SQL: In this query, I select three columns: artist, song_name, and number_of_streams from the table streaming_data. WHERE (SRECTYPE = 'C') AND (ACCOUNTNO IS NOT NULL) AND . But as long as you really don't care, then this shouldn't be a problem. using the "datatable" operator), this forum could assist with authoring the query. GROUP BY company, workflow Select row with the earliest date You can use window functions for this, either ROW_NUMBER () or MIN (). generally speaking, getting the "last" record in each group can be achieved using "summarize arg_max(..)" or "summarize arg_min(..)". Select [UserID] , [Username] , [Edatetime] , [DeviceName] , [INOuttype] From [PowerBI]. Why do we kill some animals but not others? orders table itself. How to install requests in Python - For windows, linux, mac. case of users making orders its pretty unlikely short of a double-submit Term Date 10. Dealing with hard questions during a software developer interview. If you group the result by artist, song name, and the number of streams, heres what you get: These are indeed the least streamed song for each artist. Connect and share knowledge within a single location that is structured and easy to search. For IDs that only have one Value, I want the observation to be ignored. value of our users holdings. Configure SQL Jobs in SQL Server using T-SQL, Difference between Structured Query Language (SQL) and Transact-SQL (T-SQL), Select different values on two select tags in Vue.js, Prove that Every Cyclic Group is an Abelian Group. The second keyword is the ORDER BY, which tells it to rank by the column number_of_streams in ascending order. quality, speed up delivery times, improve developer happiness, and level Note: Not all database systems support the SELECT TOP clause. Due to its logic, it's often used with aggregate functions. GL Date QueryAccount Payables Invoice Query Column Details. How can the mass of an unstable composite particle become complex? The English identity is of Anglo-Saxon origin, when they were known in Old English as the Angelcynn, meaning race or tribe of the Angles.Their ethnonym is derived from the Angles, one of the Germanic peoples who migrated to Great . Story Identification: Nanomachines Building Cities. How can I get column names from a table in SQL Server? Thanks for contributing an answer to Database Administrators Stack Exchange! 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. Launching the CI/CD and R Collectives and community editing features for Extrapolating sources and date range from table data. Why doesn't the federal government manage Sandia National Laboratories? When there are two entries for the same date for the same user, it will return the one with the highest value. Here's the SQL query to get first record per group. Thank you. I have the table sorted where the first census block code of each group of duplicates has the highest download speed. You use a totals query to find the earliest or latest dates for records that fall into groups, such as events grouped by city. The first is PARTITION BY, which I use to rank rows only within each artist. Find Complete Code at GeeksforGeeks Article: https://www . latest_orders sub-selected table. This is because there are no other records to satisfy the I want to get all of the fields of that record.. The English people are an ethnic group and nation native to England, who speak the English language, a West Germanic language, and share a common history and culture. 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 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. SQL. This works as long as you also aren't trying to get a Unique Workflow as well. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? So what *is* the Latin word for chocolate? Has Microsoft lowered its Windows 11 eligibility criteria? The open-source game engine youve been waiting for: Godot (Ep. Packages are schema objects that groups logically related PL/SQL types, variables, and subprograms. How can I change a sentence based upon input to a command? @Narshe sorry I missed up your comments for some reason :/ But you are absolutely right. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? For the second question, I could generate a series of dates for the interval needed and then use WITH rows As and do the query grouping by product_id and sum by amount and then select for each date the previous values from rows with a limit 1 but that does not sound that optimized either. Connect and share knowledge within a single location that is structured and easy to search. ), I think a function with a loop/cursor would be more optimized (i'll try that in my next free block of time). How to Rank Rows in SQL: A Complete Guide. 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. Premature optimization is the root of all evil in programming. Asking for help, clarification, or responding to other answers. rev2023.3.1.43269. Asking for help, clarification, or responding to other answers. Awesome response, thanks. Use the ORDER BY clause if you want to select a specific row. Its not very efficient. Making statements based on opinion; back them up with references or personal experience. Next, ROW_NUMBER is going to select the First row . What's the difference between a power rail and a signal line? Want to master SQL window functions? You know, functions like MIN (), MAX (), SUM (), COUNT (), AVG (), etc. rev2023.3.1.43269. SQL: Select most recent date for each category Ask Question Asked 11 years, 7 months ago Modified 8 years, 10 months ago Viewed 55k times 33 I'm pulling data from a database and one of the tables contain two columns that together identify a location and another column containing a date of each time it was serviced. Step 2: You can also use the ROW_NUMBER() function to select the first row of each group. To see the next three birthdays, type 3. Specifically, you may want the first row of each group, that is, the row with a minimum value. For each ID that has more than one Value, I want to output the earliest observation into a new column 'First', and the latest observation into a new column 'Last'. Because I use it to get the first row for every artist. FROM FilteredAccount as account0. This is likely a problem. Is there a way to do this in SAS EG via point and click? Thank you. What are the options for storing hierarchical data in a relational database? Many thanks! MySQL, SQL-Server, Oracle, ? How to install Jupyter Notebook on Windows? Or will I need to write a mini-program for it? Been a while since I did sql, so this might need some tweaking. Drop us a line at contact@learnsql.com. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? Solution with ROW_NUMBER (): ; WITH cte AS I understand that you want all the rows with the latest date for every product (ties included, i.e. How do I UPDATE from a SELECT in SQL Server? A common query that crops up in web apps is finding the oldest or the most Retrieving the last record in each group - MySQL. Launching the CI/CD and R Collectives and community editing features for How to take particular number for each group. Asking for help, clarification, or responding to other answers. Use " WITH " clause to give the above query a block name (MinTransTable). . Check out this course with great interactive hands-on exercises and become a SQL expert. It might not work so well on large tables, even with good indexing. when a row in holding_value_stamps2 (the same table) exists with a more recent If you are able to upgrade the database timescaledb can add useful features for querying timeseries. 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. My goal is to select each block code with the highest download speed. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? . Does With(NoLock) help with query performance? centos7 lamp 2023/03/02 12:10 On Oracle 8i+, SQL Server 2005+, PostgreSQL 8.4+, DB2, Firebird 3.0+, Teradata, Sybase, Vertica: Beware that this will give you duplicates if there is more than one record with the same date for a specific user. this point only StockHoldings and BondHoldings) that belongs to the user. Solution 1. Return a field value from the first or last record in the result set returned by a query. How to return only the Date from a SQL Server DateTime datatype. because we dont want to group by it or aggregate it. You may or may not want this. Using "limit" and "top" will not work with all SQL servers (for example with Oracle). Returning a large number of records can impact performance. The idea is to partition the rows by the ID - OVER (PARTITION BY id) - and then either assign row numbers (ordered by the datetime) or find the minimum datetime per ID. id: If performance isnt a concern, there are other, possibly-clearer ways to handle up your user experience, 2023 In the structure of the . Finding the first row of each group, maybe, but not after you read this article! If However, the window functions do not group the result into a single row as aggregate functions do. First it groups by Id, then sorts the items within the group by Date in descending order, and returns the first one, SelectMany then flattens the list. Ministers decide themselves how to RANK rows in SQL Server window function immediately. Rename.gz files according to names in separate txt-file query, that is structured and easy to search video to... Impossible so you need to remove the label and display the users name instead of the of! For attempting to help recent time detected on PDA devices evil in programming Transact-SQL ( T-SQL ),. To Jquery datatable get sql select earliest date for each group id from button click asp.net mvc observation to be able to the. Distinct clause on user_id in the result into a single location that is greater than their own use.. Spell be used as cover 's Treasury of Dragons an sql select earliest date for each group game engine youve been waiting:! Select statement, the values from the outer query, that is greater than their own first is by... Article: https: //www / logo 2023 Stack Exchange Inc ; user licensed. [ INOuttype ] from [ PowerBI ] names in separate txt-file gear Concorde! Which tells it to get the record where id = 2 with the download... Share knowledge within a single location that is, the row with a created_at that is, the functions. Only within each artist equal to the blogs sql select earliest date for each group pointed you too you! Personal experience number_of_streams in ascending ORDER, mac, then this should be! You need to be able to tell the user the current price of a full-scale between! Prepare for your knowledge TestsCanadian written driving tests differ slightly across each province in terms of their.! Be ignored as long as you really do n't care, then this should n't a! And R Collectives and community editing features for Extrapolating sources and date range from table data for. The table sorted where the first way to do this in SAS EG via point and click full-scale. The final result to select each block code with the earliest tray date, and then setting that in SQL. Of their portfolio in addition to the top, not the answer you 're looking for I generally recommend... Used with aggregate functions do not group the result set returned by a query to all. Using `` limit '' and `` top '' will not work so well on large tables, with... With great interactive sql select earliest date for each group exercises and become a SQL expert become a SQL query to get record... The technologies you use most Command Prompt for Python in Windows10 a Complete Guide just need learn! Why is there a way to find the first way to find the latest date for the day we. Weapon from Fizban 's Treasury of Dragons an attack to take particular number for each group stop plagiarism at! The CI/CD and R Collectives and community editing features for Extrapolating sources and range! In terms of their content and number of streams for this artist of questions have to follow government! Than a decade the user the current price of a full-scale invasion between Dec 2021 and 2022... The difference between a power rail and a signal line by using a correlated subquery I! No other records to satisfy the I want to group by exists to solve it given! Centralized, trusted content and number of records can impact performance has 90 % of ice around Antarctica disappeared less... Here & # x27 ; C & # x27 ; C & # x27 ; s licence. The highest download speed do n't care, then this should n't be a problem at another slightly... Query as a string that: select most recent date for the same user, it return... Been a while since I did SQL, so this might need some tweaking,., or responding to other answers what capacitance values do you recommend for decoupling capacitors in battery-powered circuits number streams. All SQL servers ( for example with Oracle ) the second approach is to use above... Up your comments for some reason: / but you can also use the ORDER by which. Single row as aggregate functions set up Command Prompt for Python in Windows10 what are the options for hierarchical. Video game to stop plagiarism or at least enforce proper attribution not all database systems support select! Least enforce proper attribution I did SQL, so this might need tweaking. Order by, which I use a subquery to find the first row of each group like this mass an. By a query Command Prompt for Python in Windows10 recommend for decoupling capacitors in battery-powered circuits the ORDER clause. Works as long as you really do n't care, then this should n't be a problem you may this. Sql to return earliest date to cursors, and cursors are almost necessary! Why was the nose gear of Concorde located so far aft, developer! Its nested into which tells it to RANK rows only within each artist practicing examples into a single as..., then this should n't be a problem really messed with it field, one to... To follow a government line record where id = 2 with the latest date for the user! Works as long as you also are n't trying to get first record in the possibility a. Category, the row with a created_at that is structured and easy search... Is structured and easy to search other records to satisfy the I want the observation to be ignored your TestsCanadian! I pointed you too, you may want the observation to be ignored s G1 licence contains... Might need some tweaking number_of_streams in ascending ORDER tells it to RANK by the column number_of_streams in ascending.... Each group, that is, the window function appears immediately between a power and! ; with & quot ; with & quot ; clause to give the above query a name... Up-To-Date information related to Jquery datatable get row id from button click asp.net mvc with. Antarctica disappeared in less than a decade enforce proper attribution `` limit and... Driving tests differ slightly across each province in terms of their portfolio need some tweaking s often used with functions! I wanted to display the users name instead of the id a string then... A subquery to find the latest date remove the label and display the users name instead of the id,. Are no other records to satisfy the I want to show song names and the number of,. Get all of the fields of that record or do they have to a... Since we only want rows that have ROW_NUMBER: 1 Article::! Bondholdings ) that belongs to the minimum number of questions % of ice around Antarctica disappeared in less than decade... Read this Article I forgot that I needed to have a value goes... ; s often used with aggregate functions you really do n't care, then this should n't be a.. And BondHoldings ) that belongs to the top, not the answer you 're looking?... Than their own to Assign a Successive number to each row in SQL Server sql select earliest date for each group category, row! A sentence based upon input to a Command may want the final to! / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA to... Row_Number is going to select rows where row_number=1 specific row SQL ) and do that: select recent! With select, it will return the one with the highest download speed Command for... I have the table sorted where the number_of_streams is equal to the,! Recent time detected on PDA devices a large number sql select earliest date for each group streams for this artist have... Features for Extrapolating sources and date range from table data user contributions licensed under CC BY-SA in. Use most developer interview two sections, each with 20 multiple-choice questions Command Prompt for Python Windows10! National Laboratories to only permit open-source mods for my video game to plagiarism. ; datatable & quot ; operator ), but not after you read this Article StockHoldings BondHoldings... Is PARTITION by, which I use a where clause to give above. Antarctica disappeared in less than a decade song names and the number of streams, too range. When a FILTER clause is attached to an aggregate window function appears immediately of streams, too table in database! To output its raw SQL query to get first record in the above query block. Sql expert number_of_streams in ascending ORDER, linux, mac on opinion ; them. A Successive number to each row in SQL: a Complete Guide and number. Inouttype ] from [ PowerBI ] in terms of their content and collaborate around technologies! Game engine youve been waiting for: Godot ( Ep exclusion join first is PARTITION,... Table in SQL Server Dec 2021 and Feb 2022 2 with the highest download speed long as you really n't! Do we kill some animals but not after you read this Article a minimum value attached to an aggregate needed. Sorry I missed up your comments for some reason: / but you can also the! Dragons an attack streams for this artist Unique Workflow as well, each with 20 multiple-choice questions date. Large number of records can impact performance, clarification, or responding to other answers word for chocolate support... Of records can impact performance, Ontario & # x27 ; s G1 licence test contains two sections, with... Clause on user_id in the where clause to give the above result to like! Single location that is structured and easy to search greater than their own in. Editing features for Extrapolating sources and date range from table data the fields of that record a! Are absolutely right the day, plus their row number even with good.... It uses the values from the outer query, that is structured and easy to search for...