columnsorting

MySQL: Update a “sort” column accoreding to ORDER BY

由 99封情书 提交于 2020-01-25 16:34:04
问题 Fully edited: My query has 2 columns from 2 tables: filename and sortorder. Full tables are done here http://sqlfiddle.com/#!9/8c0507 Example: SELECT * FROM table1 t1 LEFT JOIN table2 t2 ON t1.idmd5 = t2.imgid ORDER BY t2.filename WHERE t1.anotherid = "123456"; Output: filename-01.jpg - 12 filename-02.jpg - 73 filename-03.jpg - 1 filename-12.jpg - 63 filename-24.jpg - 99 Now, the "sortorder" column should be re-set according to the ORDER BY - output, it should start at 1. Expected result:

A function that allows referral to columns with both index and name

由 蓝咒 提交于 2020-01-04 07:25:48
问题 I tried to create an easier way to refer to columns with the function below, by allowing both indexes and names. See also link. So this one works: df <- data.table::fread("a b c d e f g h i j 1 2 3 4 5 6 7 8 9 10", header = TRUE) columns <- c(1:8, "i", 9, "j") col2num <- function(df, columns){ nums <- as.numeric(columns) nums[is.na(nums)] <- which(names(df)==columns[is.na(nums)]) return(nums) } col2num(df, columns) #> Warning in col2num(df, columns): NAs introduced by coercion #> [1] 1 2 3 4

Sorting excel CSV by column, saving and closing - with batch or powershell

由 不问归期 提交于 2019-12-25 01:34:04
问题 I am using a bat file to open a daily-generated Excel file named 'YYYYMMDD_foo.csv' using batch - this works fine, but I am also trying to group sort the Excel file by one of it's columns - say Column C (Dept.). ID, Name, Dept. 001, Greg, Maths 002, Sue, Operations 003, Bob, Academics 004, Joan, Operations How could I accomplish this sort in batch, so that the file is opened, and then sorted as such? ID, Name, Dept. 003, Bob, Academics 001, Greg, Maths 002, Sue, Operations 004, Joan,

Jquery Handsontable Sorting on specific columns

由 a 夏天 提交于 2019-12-13 18:04:33
问题 **Sorting Issue** I have a plugin for the handsontable.I am sorting on the column headers,sorting is working fine,but what i needs is the sorting on the specific columns. Is this possible in handsontable??.I am searching from the whole day. I have the following code: **Code Section Handsontable** var $container = $("#grid"); $container.handsontable({ data:myData, startRows:10, startCols: 22, colWidths: [50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 70, 80, 80, 80],

Sort to have non-consecutive column values

由 核能气质少年 提交于 2019-12-11 15:44:19
问题 is this possible in mysql queries? Current data table is: id - fruit - name 1 - Apple - George 2 - Banana - George 3 - Orange - Jake 4 - Berries - Angela In the name column, i would like to sort it so there is no consecutive name on my select query. My desires output would be, no consecutive george in name column. id - fruit - name 1 - Apple - George 3 - Orange - Jake 2 - Banana - George 4 - Berries - Angela Thanks in advance. 回答1: In MySQL 8+, you can do: order by row_number() over

fast way to get index of top-k elements of every column in a pandas dataframe

由 雨燕双飞 提交于 2019-12-09 17:39:24
问题 I have a very large pandas dataframe with approximately 500,000 columns. Each column is about 500 elements long. For each column, I need to retrieve the (index, column) location of the top-k elements in the column. So, if k were equal to 2, and this were my data frame: A B C D w 4 8 10 2 x 5 1 1 6 y 9 22 25 7 z 15 5 7 2 I would want to return: [(A,y),(A,z),(B,w),(B,y),(C,w),(C,y),(D,x),(D,y)] Keep in mind that I have approximately 500,000 columns, so speed is my primary concern. Is there a

How to remove sorting glyph in datagridview without removing Sorting facility

由 笑着哭i 提交于 2019-12-07 14:54:28
问题 How can i remove sorting glyph from column headers in DataGridView without removing its sorting functionality. I am working on windows form application in C#, i want to generate report from a datagridview, where datagridview column width will assign in report column, where as the DataGridView column include the with of sorting glyph, that is unnecessary space in my case, i want to exclude it from ColumnHeader. 回答1: This is actually quite easy to do using custom cell painting. All you need to

Neo4j - Order by relevance

由 醉酒当歌 提交于 2019-12-06 05:36:01
I'd like to order returned data by relevance in Neo4j. For my purpose, relevance can be simplified to "Index of the word I'm searching for", where the lower index the higher relevance. Example I have these three nodes: node : { Label: PROD properties : { name: "Bearing replacement Skateboard" } } node : { Label: PROD properties : { name: "Skateboard" } } node : { Label: PROD properties : { name: "L7 Skateboard" } } I want them to be returned with this order: node : { Label: PROD properties : { name: "Skateboard" // name.indexOf("Skateboard") = 0 } } node : { Label: PROD properties : { name:

fast way to get index of top-k elements of every column in a pandas dataframe

由 梦想与她 提交于 2019-12-04 08:33:06
I have a very large pandas dataframe with approximately 500,000 columns. Each column is about 500 elements long. For each column, I need to retrieve the (index, column) location of the top-k elements in the column. So, if k were equal to 2, and this were my data frame: A B C D w 4 8 10 2 x 5 1 1 6 y 9 22 25 7 z 15 5 7 2 I would want to return: [(A,y),(A,z),(B,w),(B,y),(C,w),(C,y),(D,x),(D,y)] Keep in mind that I have approximately 500,000 columns, so speed is my primary concern. Is there a reasonable way of doing this that will not take an entire week on my machine? What is the fastest way -

jQuery DataTables: how to sort by specific column? [closed]

由 最后都变了- 提交于 2019-12-03 12:04:33
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . Here's the page: http://csuvscu.com/ I need to sort by the Date Column, right now it needs to read Nov 6, Nov 5 and lastly Oct 7. How do I do this? 回答1: Your Current Code: $('table').dataTable({ // display everything "iDisplayLength": -1 }); What you could do: oTable = $('table').dataTable({ // display everything
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