row-number

问题 I need help in writing a query in Oracle for the following data. The data is sorted by Person and Day fields. Person Day Flag ------ --- ---- person1 day1 Y person1 day2 Y person1 day3 Y person1 day4 N person1 day5 N person1 day6 Y person1 day7 Y person1 day8 Y I need to have a Group_Number column that gets incremented whenever the Flag value changes. My result should look as below Person Day Flag Group_Number ------ --- ---- ------------ person1 day1 Y 1 person1 day2 Y 1 person1 day3 Y 1

问题 I have an employee table with has name, age, city as columns. I want to display a column at run-time for my row numbers starting from 1. I am using SQL in Access. 回答1: Call the following function from your query. Public Function GetNextNum(str As String) As Long num = num + 1 GetNextNum = num End Function The caveat is that you must have at least one parameter (even if you don't need one) otherwise the function only gets called once and returns 1 for all the rows. Before running the query set

问题 I believe similar questions have been asked but I can't quite find a solution that works for me. I've got a database that I use to sort through digitised books and their pages and I'm trying to sort through several thousand pages that contain maps. Of the two tables I'm using the first lists all the pages in a book and the order they occur in the book, it's got three columns (bookID, pageOrder, pageID), each page has its own row. The second table lists all the places (in a map) that occur on

问题 I have a table in Microsoft Access, and I want to show row number in a column using a select query in Access just like using ROW_NUMBER() function in SQL Server. In SQL Server, I can using this query: SELECT ROW_NUMBER() OVER (ORDER BY tblUser.UserID) AS NoRow, * FROM tblUser I use same query in access, but I get error. Can you help me? 回答1: You can try this query: Select A.*, (select count(*) from Table1 where A.ID>=ID) as RowNo from Table1 as A order by A.ID 回答2: One way to do this with MS

问题 I need to generate a full list of row_numbers for a data table with many columns. In SQL, this would look like this: select key_value, col1, col2, col3, row_number() over (partition by key_value order by col1, col2 desc, col3) from temp ; Now, let's say in Spark I have an RDD of the form (K, V), where V=(col1, col2, col3), so my entries are like (key1, (1,2,3)) (key1, (1,4,7)) (key1, (2,2,3)) (key2, (5,5,5)) (key2, (5,5,9)) (key2, (7,5,5)) etc. I want to order these using commands like sortBy

问题 I need to generate a full list of row_numbers for a data table with many columns. In SQL, this would look like this: select key_value, col1, col2, col3, row_number() over (partition by key_value order by col1, col2 desc, col3) from temp ; Now, let's say in Spark I have an RDD of the form (K, V), where V=(col1, col2, col3), so my entries are like (key1, (1,2,3)) (key1, (1,4,7)) (key1, (2,2,3)) (key2, (5,5,5)) (key2, (5,5,9)) (key2, (7,5,5)) etc. I want to order these using commands like sortBy

问题 Here is my query given below. select * from data where value = "yes"; My id is auto increment and below there is result of given query. id || value 1 || yes 3 || yes 4 || yes 6 || yes 9 || yes How to use ROW_NUMBER in sqlite? So that i can get result which is given below. NoId || value 1 || yes 2 || yes 3 || yes 4 || yes 5 || yes ROW_NUMBER AS NoId. 回答1: Try this query select id, value, (select count(*) from tbl b where a.id >= b.id) as cnt from tbl a FIDDLE | id | value | cnt | -------------

问题 Does informix has a function similar to the SQLServer and Oracle's row_number() ? I have to make a query using row_number() between two values, but I don't know how. This is my query in SQLServer: SELECT col1, col2 FROM (SELECT col1, col2, ROW_NUMBER() OVER (ORDER BY col1) AS ROWNUM FROM table) AS TB WHERE TB.ROWNUM BETWEEN value1 AND value2 Some help? 回答1: If, as it appears, you are seeking to get first rows 1-100, then rows 101-200, and so on, then you can use a more direct (but non

问题 I'm writing a page that will create a query (for non-db users) and it create the query and run it returning the results for them. I am using row_number to handle custom pagination. How do I do a left join and a row_number in a subquery when I don't know the specific columns I need to return. I tried to use * but I get an error that The column '' was specified multiple times Here is the query I tried: SELECT * FROM (SELECT ROW_NUMBER() OVER (ORDER BY Test) AS ROW_NUMBER, * FROM table1 a LEFT

问题 I want to find the count of rows between first and last occurrence of a value. However when there are five or more records of a different value between them, stop counting. So if last occurrence is today and first occurrence is yesterday, the result would be 2 (today plus yesterday). If last occurrence is today and first occurrence is 8 days ago AND there is no occurrence in between the two, the result would be '1'. If however there would be another occurrence 3 days ago, the result would be