comma

问题 I want to convert selected values into a comma separated string in MySQL. My initial code is as follows: SELECT id FROM table_level where parent_id=4; Which produced: '5' '6' '9' '10' '12' '14' '15' '17' '18' '779' My desired output would look like this: "5,6,9,10,12,14,15,17,18,779" 回答1: Check this SELECT GROUP_CONCAT(id) FROM table_level where parent_id=4 group by parent_id; 回答2: If you have multiple rows for parent_id. SELECT GROUP_CONCAT(id) FROM table_level where parent_id=4 GROUP BY

问题 I have a table like below: ------------- ID | NAME ------------- 1001 | A,B,C 1002 | D,E,F 1003 | C,E,G ------------- I want these values to be displayed as: ------------- ID | NAME ------------- 1001 | A 1001 | B 1001 | C 1002 | D 1002 | E 1002 | F 1003 | C 1003 | E 1003 | G ------------- I tried doing: select split('A,B,C,D,E,F', ',') from dual; -- WILL RETURN COLLECTION select column_value from table (select split('A,B,C,D,E,F', ',') from dual); -- RETURN COLUMN_VALUE 回答1: Try using below

问题 I have a table like below: ------------- ID | NAME ------------- 1001 | A,B,C 1002 | D,E,F 1003 | C,E,G ------------- I want these values to be displayed as: ------------- ID | NAME ------------- 1001 | A 1001 | B 1001 | C 1002 | D 1002 | E 1002 | F 1003 | C 1003 | E 1003 | G ------------- I tried doing: select split('A,B,C,D,E,F', ',') from dual; -- WILL RETURN COLLECTION select column_value from table (select split('A,B,C,D,E,F', ',') from dual); -- RETURN COLUMN_VALUE 回答1: Try using below

问题 I am curious why in Python a trailing comma in a list is valid syntax, and it seems that Python simply ignores it: >>> ['a','b',] ['a', 'b'] It makes sense when its a tuple since ('a') and ('a',) are two different things, but in lists? 回答1: The main advantages are that it makes multi-line lists easier to edit and that it reduces clutter in diffs. Changing: s = ['manny', 'mo', 'jack', ] to: s = ['manny', 'mo', 'jack', 'roger', ] involves only a one-line change in the diff: s = ['manny', 'mo',

问题 I have problem to select item from string separated comma and check item in checkedlistbox How can I select item from string separated comma and then check in checkedlistbox? Preview My Program download My project from this file Download How can check in checkedlistbox with textbox and separated comma When My checkedlistbox is connect to SQl database is no action for TextBox Separated by comma Download New Program with SQL Script From Comment 回答1: Insert this code in your button2 click and it

问题 I have a huge file to parse. Previously, it was separated by either space or comma and I used sscanf(string, "%lf %lf ", &aa, &bb); to get the data into my program. But now the data format is changed to "122635.670399999","209705.752799999" , with both comma and quotation marks. And I have no idea how to deal with it. Actually, my previous code was found online and I had a really hard time finding a proper document for this kind of problems. It will be great if you can recommend some to me.

问题 I have an Excel Macro in VBA. Yesterday everything worked fine, this morning VBA is taking a decimal point and changing the point to a comma. That is from 5.1 to 5,1. I am using a German system and have set in Excels advanced options that a point is a decimal and comma is thousands. For example I have a value for daily scrum meeting in the Excel sheet set at 3.75 Excel sheet input: when I use a function to read in the value such as: Sub TestFunction() MsgBox (Sheets("Input_Parameters").Cells

问题 I have made a list class as a means of replacing variadic functions in my program used for initializing objects that need to contain a changing list of elements. The list class has a usage syntax that I really like. However I haven't seen it used before, so I was wondering if I shouldn't use it just because of that fact? A basic implementation of the list class looks like this... #include <list> #include <iostream> template<typename T> struct list { std::list<T> items; list(const list&ref)

问题 I have a spreadsheet in which there are rows of data entered which need to be split. Currently this is a manual process, I have provided a link to the workbook when i have split the steps I have being doing into worksheets: https://www.dropbox.com/s/0p3fg94pa61e4su/Example.xlsx?dl=0 When done manually the logical process is to first split by column E (Temp) and F (Location) as these are directly linked to eachother, then insert a blank row underneath so they are separated as shown in the

问题 i have implemented a price text box wherein it shows 12,345 instead of 12345. Or sometimes. 12,345.00. However when being submitted to the database, it shows 12345. the comma is gone. any tricks on this? here is my place order button code: protected void btnPlaceOrder_Click(object sender, EventArgs e) { string productids = string.Empty; DataTable dt; if (Session["MyCart"] != null) { dt = (DataTable)Session["MyCart"]; decimal totalPrice, totalProducts; bool totalPriceConversionResult = decimal