copy

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I need to copy all data from a table to an another same schema table. If the new table has a row already then i need not to update or insert it. I need only new data from old table that does not exist in new table to copy to that new table. So what will be the sql query, can any one help me. Thanks

问题 Ok ... It might be a stupid question ... but I'm not finding the answer right now ! I need to realize the copy of an object, for which I want all the attributes to be copied, except one or two for which I want to fully control the copy. Here is the standard copying behaviour for an object : >>> class test(object): ... def __init__(self, arg): ... self._a = arg ... >>> t = test(123999) >>> t._a 123999 >>> tc = copy.copy(t) >>> tc._a 123999 Which basically means that all the attributes are

问题 I am having trouble copying files with MSbuild and the error messages I'm getting seem to contradict each other (using TFS 2008 to do the build). I currently having the following in my build script <PropertyGroup> <ReleaseRoot>$(DropLocation)\Latest\x86\Release</ReleaseRoot> <WebRoot>$(ReleaseRoot)\_PublishedWebsites\Web</WebRoot> <DBRoot>$(ReleaseRoot)\Database</DBRoot> <TempHolingDir>$(ReleaseRoot)\temp)</TempHolingDir> <WebConfig>$(WebRoot)\Web.config</WebConfig> <DatabaseUpdate>$(DBRoot)

问题 Think I want to copy this file C:\Majid\File\text.txt to D:\Copied ( C:\Majid\File\text.txt ---> D:\Copied ) I want to use Xcopy to copy that file with its full directory into D:\Copied , then I should have something like this ---> D:\Copied\Majid\File\text.txt , as you see the drive letter is removed and all of other directory is created in destination directory. How can I do this action by XCopy? 回答1: see this: XCOPY COMMAND ... Syntax xcopy Source [Destination] [/w] [/p] [/c] [/v] [/q] [/f

问题 i have path of one apk "/system/app/Gallery2.apk" and i want to copy this on sdcard. i implement copy method public void copy(File src, File dst) throws IOException { InputStream in = new FileInputStream(src); OutputStream out = new FileOutputStream(dst); // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } in.close(); out.close(); } but it shows IOException i pass values try { File file =new File( pm

问题 I have two widgets (Real and Fake) and one of them has a QPushButton. Now I want the same button to be shown in the other widget. How do I do it? I dont want to create a copy, I want the same QObject on to be shown another widget at the same time without changing the parent. As an example, in the following I want "mybutton" to be shown in both the widgets at the same time; QWidget *widgetReal = new QWidget(); QWidget *widgetFake = new QWidget(); widgetReal->setWindowTitle("Real"); widgetFake-

问题 I'm updating some old code to grab some binary data from a URL instead of from a database (the data is about to be moved out of the database and will be accessible by HTTP instead). The database API seemed to provide the data as a raw byte array directly, and the code in question wrote this array to a file using a BufferedOutputStream. I'm not at all familiar with Java, but a bit of googling led me to this code: URL u = new URL("my-url-string"); URLConnection uc = u.openConnection(); uc

问题 For a small project I'm working on I need to cycle through a list. For each element of this cycle I have to start another cycle through the same list, with the former element as first element of the new cycle. For example I'd like to be able to produce something like this: 1, 2, 3, 4, 1, 2, 3, 4, 1, ... 2, 3, 4, 1, 2, 3, 4, 1, 2, ... 3, 4, 1, 2, 3, 4, 1, 2, 3, ... 4, 1, 2, 3, 4, 1, 2, 3, 4, ... 1, 2, 3, 4, 1, 2, 3, 4, 1, ... ... I thought that copying a itertools.cycle after each .next()

问题 (postgresql) I was trying to COPY csv data into a table but I was getting duplicate key violation errors, and there's no way to tell COPY to ignore those, so following internet wisdom I tried adding this rule: CREATE OR REPLACE RULE ignore_duplicate_inserts AS ON INSERT TO mytable WHERE (EXISTS ( SELECT mytable.id FROM mytable WHERE mytable.id = new.id)) DO NOTHING; to circumvent the problem, but I still get those errors - any ideas why ? 回答1: Rules by default add things to the current action

问题 I have a C# Windows Forms app that launches a webpage based on some criteria. Now I would like my app to automatically copy all the text from that page (which is in CSV format) and paste and save it in notepad. Here is a link to an example of the data that needs to be copied: http://www.wunderground.com/history/airport/FAJS/2012/10/28/DailyHistory.html?req_city=Johannesburg&req_state=&req_statename=South+Africa&format=1 Any Help will be appreciated. 回答1: http://msdn.microsoft.com/en-us