cursor

问题 I'm trying to run this code on Oracle 11g and it's giving me the error below. I can't seem to get it right. DECLARE CURSOR bookcursor IS SELECT btName, BookCopy.Isbn, pubName, dateDestroyed FROM booktitle bt JOIN publisher p ON bt.pubId = p.pubId JOIN bookcopy bc ON bt.Isbn = bc.Isbn WHERE datedestroyed IS NULL ; bookcursorrec bookcursor%ROWTYPE; BEGIN OPEN bookcursor; LOOP FETCH bookcursor INTO bookcursorrer; EXIT WHEN bookcursor%NOTFOUND; dbms_output.put_line( 'ISBN: ' ||bookcursorrec.isbn

问题 I am trying to mask the phone number as the user types. I have used the javascript code below with jquery and the setTimeout workaround successfully on android 2.x devices, but I have not found a workaround for that works for android 4.0.3. if (navigator.userAgent.toLowerCase().indexOf("android") >= 0) { $.fn.usphone = function() { this.keyup(function(e) { // do not process del, backspace, escape, arrow left and arrow right characters var k = e.which; if (k == 8 || k == 46 || k == 27 || k ==

问题 I have the following table +-------+-------+----------+------+ | icode | iname | icatcode | slno | +-------+-------+----------+------+ | 10 | a | 11 | 0 | | 20 | b | 31 | 0 | | 30 | c | 11 | 0 | | 40 | d | 21 | 0 | | 50 | e | 31 | 0 | | 60 | f | 11 | 0 | | 70 | g | 21 | 0 | | 80 | h | 41 | 0 | +-------+-------+----------+------+ I need to update the slno column using a cursor. The o/p should be the following table ie., when the icatcode is same it should increment the slno and when icatcode

问题 Is it safe to use cursors in stored procs that are called from a website? There is the obvious performance hit, but what I am trying to raise here is the issue with the variable @@Fetch_status. The scope of @@Fetch_status used in stored proc, is a connection. Isn't it possible that two different users call the same stored proc, from the same connection, thru the UI? Wouldn't that cause unexpected results? In other words, would the fact that @@Fetch_status is global not just to a scope but to

问题 I'm working on an app to automate some input into another application. And i'm running into a problem. Below is the function code i'm using public class MouseClick { [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] public static extern void mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo); } public enum MouseButton { MOUSEEVENTF_LEFTDOWN = 0x02, MOUSEEVENTF_LEFTUP = 0x04, MOUSEEVENTF_RIGHTDOWN = 0x08, MOUSEEVENTF_RIGHTUP =

问题 How can I know how many columns there are on a CursorWindow ? Why it has a getNumRows() but no getNumColumns() , despite having a setNumColumns() ? 回答1: I did it in this most horrible way: /** * Get the number of columns of this CursorWindow. The CursorWindow has to * have at least one row. */ public static int getCursorWindowNumCols(CursorWindow window) { // Ugly hack... int j = 0; while (true) { try { window.getString(0, j); } catch (IllegalStateException e) { break; } catch (SQLException e

问题 There is an object type and table consists of that objects. So here we go: create or replace type lpu.someobj_o as object ( name VARCHAR2(75), enroll_date DATE, id NUMBER(12) ) CREATE OR REPLACE TYPE lpu."SOMEOBJ_T" IS TABLE OF someobj_o; There's also PL/SQL function that works in common ETL principle. Here is piece of code function: for some_cursor_rec in some_cursor(startTime, recordInterval) loop open some_cur2(some_cursor_rec.name, some_cursor_rec.id); fetch some_cur2 into some_cursor

问题 Why both my variables output NULL ? SELECT part of the cursor is working properly. CREATE PROCEDURE p2() BEGIN # Account table DECLARE accountid INT; DECLARE accountname VARCHAR(1000); # 1. cursor finished/done variable comes first DECLARE done INT DEFAULT 0; # 2. the curser declaration and select DECLARE c_account_id_name CURSOR FOR SELECT accountid, accountname FROM temp.test; # 3. the continue handler is defined last DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = TRUE; OPEN c

问题 I'm getting the following error and stack traces: Caused by: java.lang.IllegalStateException: Couldn't init cursor window at android.database.CursorWindow.native_init(Native Method) at android.database.CursorWindow.<init>(CursorWindow.java:41) at android.database.sqlite.SQLiteCursor.fillWindow(SQLiteCursor.java:276) at android.database.sqlite.SQLiteCursor.getCount(SQLiteCursor.java:268) at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:171) at android.database

问题 I set custom cursor url(mouse2.cur) and it doesnt change. (mouse2.png) works perfectly! Whats the problem ? body{ cursor: url(mouse2.cur),pointer; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; } 回答1: Different browsers have different support in url of the cursors. Firefox/Mac, Safari/Mac, Chrome/Mac don't support PNG and JPG cursors (tested with 48px cursors). IE only supports cursors in the CUR format. According to CanIUse: http://caniuse.com/#search=cursor W3C