cursor

问题 How do I achieve the same as an Oracle cursor expression does in a MySQL database (version from 5.6 onwards) below is a sample query of an Oracle cursor expression SELECT department_name, CURSOR(SELECT salary, commission_pct FROM employees e WHERE e.department_id = d.department_id) FROM departments d; How can I achieve the same as this with a MySQL database? if i execute this query on oracle below output i will be produced, depart_name cursor result MCA { < SALARY=20000 , COMMISSION_PCT=2 > ,

问题 I am trying to change the cursor in my tkinter program to show the program is working but the cursor only changes to the working cursor until after the work is done, this is as compressed as I can make the code warning: to demonstrate working it will count to 99,999,999 when you press go to page one import tkinter as tk # python 3 from tkinter import font as tkfont # python 3 #import Tkinter as tk # python 2 #import tkFont as tkfont # python 2 class SampleApp(tk.Tk): def __init__(self, *args,

问题 I am trying to change the cursor in my tkinter program to show the program is working but the cursor only changes to the working cursor until after the work is done, this is as compressed as I can make the code warning: to demonstrate working it will count to 99,999,999 when you press go to page one import tkinter as tk # python 3 from tkinter import font as tkfont # python 3 #import Tkinter as tk # python 2 #import tkFont as tkfont # python 2 class SampleApp(tk.Tk): def __init__(self, *args,

问题 I have a custom cursor working on Chrome and Firefox by using the CSS property, cursor. However, on Microsoft Edge, the cursor seems to have an offset. I have to aim above my custom cursor a bit in order to select items accurately. Is there something I can do to fix this? Or is this some sort of limitation? Edit: I should mention that I'm using a custom image as my cursor. 回答1: In both IE and Edge only .cur files are supported, see https://msdn.microsoft.com/en-us/library/aa358795(v=vs.85)

问题 Is it possible to change the cursor while dragging? I have been searching and trying to do it for a while now. I want to change the 'not-allowed' cursor which shows up while you drag an object to another cursor. I tried creating an event and assigning it to the image I wanted to drag:- <img id="drag1" class="drag" src="http://www.surfixe.com/img/tick2.png" draggable="true" ondragstart="drag(event)" /> java:- function drag(ev) { $('#drag1').css('cursor', 'pointer'); } jsfiddle Edit: Note: My

问题 Is it possible to change the cursor while dragging? I have been searching and trying to do it for a while now. I want to change the 'not-allowed' cursor which shows up while you drag an object to another cursor. I tried creating an event and assigning it to the image I wanted to drag:- <img id="drag1" class="drag" src="http://www.surfixe.com/img/tick2.png" draggable="true" ondragstart="drag(event)" /> java:- function drag(ev) { $('#drag1').css('cursor', 'pointer'); } jsfiddle Edit: Note: My

问题 Is it possible to change the cursor while dragging? I have been searching and trying to do it for a while now. I want to change the 'not-allowed' cursor which shows up while you drag an object to another cursor. I tried creating an event and assigning it to the image I wanted to drag:- <img id="drag1" class="drag" src="http://www.surfixe.com/img/tick2.png" draggable="true" ondragstart="drag(event)" /> java:- function drag(ev) { $('#drag1').css('cursor', 'pointer'); } jsfiddle Edit: Note: My

问题 I am using PyMongo and trying to iterate over (10 millions) documents in my MongoDB collection and just extract a couple of keys: "name" and "address", then output them to .csv file. I cannot figure out the right syntax to do it with find().forEach() I was trying workarounds like cursor = db.myCollection.find({"name": {$regex: REGEX}}) where REGEX would match everything - and it resulted in "Killed". I also tried cursor = db.myCollection.find({"name": {"$exist": True}}) but that did not work

问题 I am running this code in my pyodbc script where I am trying to do parallelism templst = [lineitem, orders, partsupp, region, cur_cur, T1, T2] connstr = [DRIVER={libdbodbc17.so};host=lint16muthab.phl.sap.corp:8766;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host=localhost:8767;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host=localhost:8768;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host=localhost:8769;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host

问题 I am running this code in my pyodbc script where I am trying to do parallelism templst = [lineitem, orders, partsupp, region, cur_cur, T1, T2] connstr = [DRIVER={libdbodbc17.so};host=lint16muthab.phl.sap.corp:8766;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host=localhost:8767;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host=localhost:8768;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host=localhost:8769;UID=dba;PWD=sql;CharSet=utf8, DRIVER={libdbodbc17.so};host