cursor

Change data procedure with cursor current of

由 为君一笑 提交于 2019-12-02 18:24:41
问题 I need to make a procedure in SQL Developer that can move data from one column to another. These columns are in different tables so i don't know how to write the code. I'm suppose to be using a Cursor to transfer the data from one column then inset in to he other column using the current of statement, though i don't know how to do it and could use some help. I don't even know how you can do this. Table 1 are build with customernumber, first namn, last namne and password table 2 is just

My first table valued function and cursor

由 醉酒当歌 提交于 2019-12-02 18:18:48
问题 I have this query: SELECT name, lastname FROM contestant WHERE name= 'John' AND lastname = 'Smith' I get several results from the query above and I need to use them for the following query: SELECT name, lastname,prize, city FROM draw WHERE name= name from table contestant AND lastname= name from table contestant Now I’m building a table valued function with a cursor and a WHILE so I can have a table with the results. Here’s my try, can you please help me complete it? it will be very helpful

Git Bash won't let me type anything, just shows a blinking cursor

由 一笑奈何 提交于 2019-12-02 17:58:23
I'm not able to type any characters at the Git-Bash command line; all it shows is a blinking cursor. Git Bash was working fine yesterday, but I'm not able to do anything on it now. What can I do to fix this? I found the answer to a problem with similar symptoms. I'll include it here for someone who finds this page looking for an answer, as I did. In my case, the cursor didn't move, or show my typing onscreen. However, it actually executed the command (if I pressed Enter ), even though it looked like I didn't type anything in! The solution was to type reset < Enter > Turns out it can be an

Increase Cursor Size on Entire Desktop

由 久未见 提交于 2019-12-02 17:42:20
问题 First of all, please put aside notions of "Your application shouldn't do this". This is exactly what the people purchasing this software will be expecting. How can I, system-wide, increase the size of the mouse cursor? I'd have to increase all mouse cursors too, so I don't think SetCursor would do the trick, at least not in any nice, clean way. And I can't use the Form's Cursor Size as detailed here, as this would only affect the cursor when it's active on the form. I see that there are

Couldn't read row 0, col -1 from CursorWindow

由 删除回忆录丶 提交于 2019-12-02 16:53:27
问题 I'm trying to get records in my table. I'm using this code if(c!=null){ if(c.moveToFirst()) { String tipId = c.getString(c.getColumnIndex(DAO.TIP_ID)).toString().trim(); System.out.println("tipId: "+ tipId); }else{ // Handle no rows returned System.out.println("Handle no rows returned"); } }else{ System.out.println("debug Cursor , cannot be created"); } But it gives me the following exception Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before

How to implement cursors for pagination in an api

由 家住魔仙堡 提交于 2019-12-02 16:14:06
This is similar to to this question which doesn't have any answers. I've read all about how to use cursors with the twitter , facebook , and disqus api's and also this article about how disqus generally built their cursors, but I still cannot seem to grok the concept of how they work and how to implement a similar solution in my own projects. Can someone explain specifically the different techniques and concepts behind them? Lets first understand why offset pagination fails for large data sets with an example. Clients provide two parameters limit for number of results and offset and for page

What's the mechanism of setNotificationUri?

由 拜拜、爱过 提交于 2019-12-02 15:51:22
I've just implemented a CursorLoader and it works great! In fact, I didn't believe that my ListView would automatically update when the underlying data changed until I tested it. This apparently is the magic of setNotificationUri. My question is, how does it know when the data in the cursor has changed? Say I quietly insert an additional row somewhere. Does the underlying mechanism constantly query the database and compare it with the past data? Won't that be horribly inefficient if the datasets are large? Before I used cursorloaders, I would manually refresh when necessary. It's great that I

Difference between ContentObserver and DatasetObserver?

由 China☆狼群 提交于 2019-12-02 15:11:06
What is difference between ContentObserver and DatasetObserver ? When one or another should be used? I get Cursor with single row. I want to be notified about data changes - eg. when row is updated. Which observer class should I register? If you are using a ContentProvider (via ContentResolver or Activity.managedQuery() ) to get your data, simply attach a ContentObserver to your Cursor . The code in onChange() will be called whenever the ContentResolver broadcasts a notification for the Uri associated with your cursor. Cursor myCursor = managedQuery(myUri, projection, where, whereArgs, sortBy)

Programmatically change cursor speed in windows

由 僤鯓⒐⒋嵵緔 提交于 2019-12-02 15:01:03
问题 Since getting a satisfactory answer on SuperUser is very difficult, I want to rephrase this question and ask: Is there any way to programmatically detect a mouse was plugged in the usb port, and change the cursor speed in windows (perhaps through an API)? I'd like to use C#, but I'm open to any language that can run on a windows 7 machine. 回答1: I don't know about the detection but you can use P/Invoke to the SystemParametersInfo api using [DllImport("user32.dll", SetLastError = true)] [return

What is the equivalent of Oracle’s REF CURSOR in MySQL?

由 懵懂的女人 提交于 2019-12-02 13:33:25
I am trying to make a procdure in mysql that returns me an array with the result, I used to do with the oracle ref cursor, but in mysql do not know how to proceed, I have to pass parameters too... Anyone know how I can do, or have an example to show me? Thank you very much... There is no analog of REF CURSOR in MySQL. Stored procedures and functions allow to pass and return only scalar datata types, see the reference here - CREATE PROCEDURE and CREATE FUNCTION Syntax . MySQL cannot operate with arrays. A workaround is to use a table (or TEMPORARY TABLE). Also - take advantage of visual object
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