connect

Oracle 伪列Level的应用

由 点点圈 提交于 2020-01-15 09:21:49
目录导航： 1. 根据ID的数量按序展开 2. 根据ID的数量按序展开 3. 生成随机数 4. 转置截取字符串 1、根据ID的数量按序展开 WITH TB AS (SELECT 'U101' USER_ID, DATE '2016-11-02' START_DT, DATE '2016-11-06' END_DT FROM DUAL UNION ALL SELECT 'U102', DATE '2015-06-01', DATE '2015-06-03' FROM DUAL) SELECT TB.USER_ID, TB.START_DT + LEVEL - 1 FROM TB CONNECT BY TB.USER_ID = PRIOR TB.USER_ID AND LEVEL <= (TB.END_DT - TB.START_DT + 1) AND PRIOR DBMS_RANDOM.VALUE IS NOT NULL; 2. 根据ID的数量按序展开 WITH TB AS (SELECT 'U101' USER_ID, '12345' MOBILE, 3 CNT FROM DUAL UNION ALL SELECT 'U102', '33563', 4 FROM DUAL) SELECT A.USER_ID, A.MOBILE, B.LV FROM TB A LEFT JOIN

dojo.connect won't connect 'onclick' with button

由 扶醉桌前 提交于 2020-01-13 09:30:33
问题 I'm running into a problem using dojo.connect() to connect an 'onclick' event with this button: <button dojoType="dijit.form.Button" widgetId="inbox_button" id="inbox_button">Inbox</button> and the code making the connection is: var inbox_button=dojo.byId("inbox_button"); dojo.connect(inbox_button,'onclick',function(){ var container=dijit.byId("center"); container.addChild(new dijit.layout.ContentPane({region: "left", content: "...", style: "width: 100px;"})) }); However, instead of executing

__WEBPACK_IMPORTED_MODULE_4_react___default.a.memo is not a function

由 半世苍凉 提交于 2020-01-13 08:37:04
问题 I just connect the app with redux and react-redux connect function, together with state and dispatches. It compiled without problems but the results are not showing. And it looks like below. I tried to find it and found that i have to change react version. $ sudo npm install --save react@16.4.0 react-dom@16.4.0 But it didn't work. I am following this tutorial. https://www.youtube.com/watch?v=BxzO2M7QcZw 回答1: This is also happen to me. What I figure it out is that this is happen because of

grunt connect port option ignored

由 末鹿安然 提交于 2020-01-11 10:37:11
问题 I am unable to get grunt connect to use the port that I specify in the options. In my grunt file is the following configuration connect: { options: { port: 9000, hostname: '0.0.0.0' }, test: { options: { port: 9001, open: true, base: 'test' } } } However when I run grunt connect:test the console raises returns the following Opening server for /home/peter/Projects/HammerHead2 on port 1337. 回答1: Simple solution I had install grunt-connect NOT grunt-contrib-connect 来源： https://stackoverflow.com

error:Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused;error:couldn't ....

由 我怕爱的太早我们不能终老 提交于 2020-01-11 02:35:53
错误 ：MongoDB shell version: 2.6.10 connecting to: test 2020-01-06T19:04:40.945+0800 warning: Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused 2020-01-06T19:04:40.946+0800 Error: couldn’t connect to server 127.0.0.1:27017 (127.0.0.1), connection attempt failed at src/mongo/shell/mongo.js:146 我是在虚拟机下，下载了mongo，想进入mongodb库，发现报错（如上），网上查了很多，按照他们的方法尝试了很多，但就是进不去，后来发现因为自己没有进入到docker镜像下（刚开始接触镜像） 我对 docker镜像 的学习，是借助 虚拟机 来进行操作学习的 第一步 ，切换到su root用户下，在docker images 查看docker下的所有镜像 第二步 ，如果没有mongo ，通过docker pull mongo官网拉取mongo，如果已经拉取直接操作第三步 第三步 ，启动容器docker run -dit --name mymongodb -p

信号槽无响应的解决方案

由 狂风中的少年 提交于 2020-01-07 20:34:48
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 1.检查头文件中是否缺少关键字：signals、(private )slot、Q_OBJECT 2.检查是否定义了该信号槽 3.检查信号或槽书写是否正确，在当前使用的Qt版本中是否存在该信号或槽 4.检查对应的sender或receiver是否正确 5.检查对应的sender或receiver是否为没有申请空间的空指针 注：检查时可分为三步。第一，检查信号是否被发出；第二，检查槽函数是否已执行；第三，临时新建一个布尔变量接收信号槽的创建结果，看是否成功创建。 实例：有个QPushButton控件点击后执行一个槽函数，各项检查均可通过，但是槽函数并未触发，最终原因是加了样式表的该控件实际的enabled状态为false。 来源： oschina 链接： https://my.oschina.net/u/2650669/blog/752372

MySQL db connection

由 痞子三分冷 提交于 2020-01-07 09:20:29
问题 I have been searching the web for a connection between my Android simulator and a MySQL db. I've found that you can't connect directly but can via a web server. The web server will handle my request from my Android. I found the following code on Hello Android, but I don't understand. If I run this code on the simulator, nothing happens; the screen stays black. Where does Log.i land, in the Android screen, the error log, or somewhere else? Can somebody help me with this code? package app

Mysql connection error: Error: Packets out of order. Got: 45 Expected: 0

由 ≡放荡痞女 提交于 2020-01-06 02:24:11
问题 My situation is similar to - Packets out of order. Got: 80 Expected: 0 node.js (no solutions). Works fine on local machine but fails on virtual machine. Code as follows: var connection = mysql.createConnection({ host : "xxxxx", port : 22, user : "root", password : "root", database : "db" }); Error as follows: Error: Packets out of order. Got: 45 Expected: 0 at Parser.write (/home/webdev/PM/LT/node_modules/mysql/lib/protocol/Parser.js:42:19) at Protocol.write (/home/webdev/PM/LT/node_modules

C# - How to get current user picture

由 落花浮王杯 提交于 2020-01-05 07:37:56
问题 how can I get the image of the logged in user in c#? Thanks 回答1: That is not possible on each OS; but on the OS'es where it is possible: For Windows Vista or later: That image is located in C:\Users\UserName\AppData\Local\Temp\UserName.bmp if the user is a domain user, it will be "DOMAIN+UserName.bmp" (Yes, the '+' is part of the filename) 回答2: Try Ths:: public static Image GetUserimage() { if (File.Exists(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)+@"\Temp\"

Detecting successful read stream open

由 陌路散爱 提交于 2020-01-04 12:20:13
问题 I'm implementing cache for static serving middleware for Express.js, which works as follows — when request comes, middleware first tries to serve file from filesystem, and if there is none, file is fetched from upstream and stored in file system. Problem is I don't know how to properly detect “cache hit” event. staticMiddleware = function(req, res, next) { // try to read file from fs filename = urlToFilename(req.url); stream = fs.createReadStream(filename); // cache miss - file not found
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