row-number

问题 I work with MS Access 07 and need a little help. I have two tables TbProjectTeam and TbProjectList. I need to compare date of employee turn-out and date of project start. I used that SQL syntax: SELECT [TbProjectTeam ].[Surname, name] FROM TbProjectTeam INNER JOIN TbProjectList ON TbProjectTeam .[DateofTurnOut] <= TbProjectList.[DateOfStart] WHERE TbProjectList.[ID] = 1 ORDER BY [Surname, name]; My aim is to replace 1 in TbSeznamUkolu.[ID] = 1 expression with something as ROW_NUMBER() OVER in

问题 I am having a PySpark DataFrame - valuesCol = [('Sweden',31),('Norway',62),('Iceland',13),('Finland',24),('Denmark',52)] df = sqlContext.createDataFrame(valuesCol,['name','id']) +-------+---+ | name| id| +-------+---+ | Sweden| 31| | Norway| 62| |Iceland| 13| |Finland| 24| |Denmark| 52| +-------+---+ I wish to add a row column to this DataFrame, which is the row number (serial number) of the row, like shown below - My final output should be: +-------+---+--------+ | name| id|row_num | +------

问题 Select id, name, ROW_NUMBER() OVER (ORDER BY id asc) as 'RowNo' from customers where RowNo between 50 AND 60 I am trying to select a subset of rows between 50 and 60 . The problem is 'RowNo' is an invalid column name. Thank you Using SQL SERVER 2008 R2 回答1: Use your query as subquery like bellow: select * from ( Select id, name, ROW_NUMBER() OVER (ORDER BY id asc) as [RowNo] from customers ) t where RowNo between 50 AND 60 You can use CTE as well but whether to choose one over another read

问题 I am trying to transpose rows into columns, grouping by a unique identifier (CASE_ID). I have a table with this structure: CASE_ID AMOUNT TYPE 100 10 A 100 50 B 100 75 A 200 33 B 200 10 C And I am trying to query it to produce this structure... | CASE_ID | AMOUNT1 | TYPE1 | AMOUNT2 | TYPE2 | AMOUNT3 | TYPE3 | |---------|---------|-------|---------|-------|---------|--------| | 100 | 10 | A | 50 | B | 75 | A | | 200 | 33 | B | 10 | C | (null) | (null) | (assume much larger dataset with large

问题 I am having data as below **Heading Date** A 2009-02-01 B 2009-02-03 c 2009-02-05 d 2009-02-06 e 2009-02-08 I need rank as below Heading Date Rank A 2009-02-01 1 B 2009-02-03 2 c 2009-02-05 1 d 2009-02-06 2 e 2009-02-07 3 As I need rank based on date. If the date is continuous the rank should be 1, 2, 3 etc. If there is any break on dates I need to start over with 1, 2, ... Can any one help me on this? 回答1: SELECT heading, thedate ,row_number() OVER (PARTITION BY grp ORDER BY thedate) AS rn

问题 I was using this SQL statement: SELECT "dateId", "userId", "Salary" FROM ( SELECT *, (row_number() OVER (ORDER BY "userId", "dateId"))%2 AS rn FROM user_table ) sa WHERE sa.rn=1 AND "userId" = 789 AND "Salary" > 0; But every time the table gets new rows the result of the query is different. Am I missing something? 回答1: Assuming that ("dateId", "userId") is unique and new rows always have a bigger (later) dateId . After some comments: What I think you need: SELECT "dateId", "userId", "Salary"

问题 After much Google searching and code experimentation, I'm stumped on a complex C# LINQ-to-objects problem which in SQL would be easy to solve with a pair of ROW_NUMBER()...PARTITION BY functions and a subquery or two. Here's, in words, what I'm trying to do in code-- the underlying requirement is removing duplicate documents from a list: First, group a list by (Document.Title, Document.SourceId), assuming a (simplified) class definition like this: class Document { string Title; int SourceId;

问题 In PostgreSQL 8.4 I want to create a view from 3 tables with id. So I want to have this structure in my view: num serial, name_dispatcher character varying(250) the_geom geometry I can select name_dispatcher and the_geom from tables: CREATE VIEW lineView AS SELECT 'name' AS name_dispatcher, the_geom FROM line1 UNION SELECT 'name' AS name_dispatcher, the_geom FROM line2 UNION SELECT 'name' AS name_dispatcher, the_geom FROM line3 How to create the num column in the view? UPDATE I found a

问题 I have a query that I built using an answer found here and it was very helpful. I have added some things to it to suit my needs. One of the things that I added was a ROW_NUMBER() in order to count how many times someone has been readmitted within 30 days over any time length. I have inserted the cte results into a temp table as suggested in the first answer and by a question that was posted here. This does not solve thought, the sequence length and sequence count issue. This is the query: --

问题 I have a question about Microsoft SQL Server 2005. How can I delete or select a row from a table that has a specific row number? 回答1: Edit: Modified the code so that it matches more closely to OP's intentions Declare @RowNum as INT SET @RowNum = 15 ---Just for example WITH OrdersRN AS ( SELECT ROW_NUMBER() OVER(ORDER BY OrderDate, OrderID) AS RowNum ,OrderID ,OrderDate ,CustomerID ,EmployeeID FROM dbo.Orders ) SELECT * FROM OrdersRN WHERE RowNum = @RowNum ORDER BY OrderDate ,OrderID; 回答2: