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cursor_name[(Parameter_dec [, Parameter_dec] ...)][Return datatype]Isselect_statement;Example: DECLARECURSOR C1 return departments%rowtype; --Declaring C1 cursors CURSOR C2 is--declares the C2 cursor and definesSELECT employee_id, job_id, salary from employeesWHERE Salary > 2000; CURSOR C1 return Departments%rowtype are--Define C1 cursorsSELECT * FROM DepartmentsWHERE department_id = 110; CURSOR C3 return Locations%rowtype; --Declaring C3 cursors CURSOR C3 is--Define C3 cursorsSELECT * FRO

I bought a DELL laptop,but can not connect to network through WiFi. There ' s lots of methods on the internet,but few of them resolve my problem. If u face the same situation,u can try my.Phenomenon:1 ' No-carrier2 ' UnmanagedKEY Steps:1.Get WiFi interface ' s Name[[email protected] ~]$ NMCLI deviceDEVICE TYPE State CONNECTIONVirbr0 Bridge connected Virbr0virbr0-nic Tap Connected Virbr0-nicP1P1 Ethernet Unavailable--lo Loopback unmanaged-- wlp6s0 wifi unmanaged --2.Enble WiFi Module[[Email prote

("Getemail"). Value;var checkemail = document.getElementById ("Emailid");if (!/^ ([a-za-z0-9_-]) [email protected] ([a-za-z0-9_-]) + (. [ A-za-z0-9_-]) +/.test (email)) {checkemail.textcontent = "Email format does not meet the requirements!" ";return false;}var C1 = document.getElementById ("C1"). Checked;var C2 = document.getElementById ("C2"). Checked;var C3 = document.getElementById ("C3"). Checked;var C4 = document.getElementById ("

controllerUitabbarcontroller *tb=[[Uitabbarcontroller Alloc]init];21st//Set the Controller as window's root controllerSelf.window.rootviewcontroller=Tb2324//B. Creating a sub-controllerUiviewcontroller *c1=[[Uiviewcontroller Alloc]init];C1.view.backgroundcolor=[Uicolor Graycolor];C1.view.backgroundcolor=[Uicolor Greencolor];c1.tabbaritem.title=@"News";C1.tabbaritem.image=[uiimage imagenamed:@"Tab_recent_nor"];C1.tabbaritem.badgevalue=@"123";31Uiviewcontroller *c2=[[Uiviewcontroller Alloc]init];

;Dateint date1 = C3.get (calendar.date);System.out.println (year1 + "year" + Month1 + "Month" + date1 + "Day");The Add method here refers to the calendar.date of the C3 object, which is the addition of 100 on the Date field, and the value of the other fields in the Date object is recalculated inside the class to obtain a date after 100 days, for example, the output of the program may be:June 17, 2009B, after methodpublic Boolean after (Object when)The function of this method is to determine whet

cursor2.1 declare/define a cursor Syntax: CURSOR cursor_name [(parameter_dec [, parameter_dec ]…)] [RETURN datatype] IS select_statement; Example: Declare cursor c1 RETURN parameters % ROWTYPE; -- DECLARE C1 CURSOR c2 IS -- DECLARE C2 CURSOR and define SELECT employee_id, job_id, salary FROM employees WHERE salary> 2000; CURSOR c1 RETURN orders ments % rowtype is -- defines C1 cursor select * FROM orders ments WHERE department_id = 110; CURSOR c3 RETURN locations % ROW

Mysql Ó Ö» Ö öbtree zookeeper Ó Ò» μ À Ì â ¿£? ¼, C4 £;»  ¡ª Ö ö» äü Ü Ó Ã ááá ° Ï Ò µ %µ cäc1, c2, c3 ² ¿· ÖA where c1 = x and c2 = x and c4> x and c3 = xB where c1 = x and c2 = x and c4 = x order by c3C where c1 = x and c4 = x group by c3, c2D where c1 =? And c5 =? Order by c2, c3E where c1 =? And c2 =? And c5 =? Or

shoes for reference, this article is purely personal thinking products, If there is a better way, please enlighten me. 650) this.width=650; "src=" Http://img.baidu.com/hi/face/i_f30.gif "alt=" i_f30.gif "/>we know that the user's password is stored in the/etc/passwdand the/etc/shadowWhy do you say that in these two files? Because the user's projection password is turned on by the system, the password is mapped toShadowin this file, if no projection password is turned on, the user's password is

;Dateint date1 = C3.get (calendar.date);System.out.println (year1 + "year" + Month1 + "Month" + date1 + "Day");The Add method here refers to the calendar.date of the C3 object, which is the addition of 100 on the Date field, and the value of the other fields in the Date object is recalculated inside the class to obtain a date after 100 days, for example, the output of the program may be:June 17, 2009B, after methodpublic Boolean after (Object when)The function of this method is to determine whet

starting position is a, the target position is P, the number after the letter indicates the value of the node)Two tables are set during the search: open and closed. The Open table holds all the nodes that have been generated without being inspected, and the nodes that have been visited are recorded in the CLOSED table. One step in the algorithm is to rearrange the open table based on the valuation function. Each step in this loop considers only the best nodes in the Open table. The specific sea

whether the current date object is behind the When object, or False if it returns true after the When object. For example:Calendar C4 = calendar.getinstance (); C4.set (2016,8-1,28= Calendar.getinstance (); C5.set (2016,10-1,1); Boolean b = c5.after (c4); System.out.println (b);In the sample code, the time represented by the object

] initwithframe:[[uiscreen mainscreen] bounds]];Self.window.backgroundColor = [Uicolor Whitecolor];A. Initializing a Tabbar controllerUitabbarcontroller *tb=[[uitabbarcontroller Alloc]init];Setting the root controller for WindowsSELF.WINDOW.ROOTVIEWCONTROLLER=TB;B. Creating a child controllerUiviewcontroller *c1=[[uiviewcontroller Alloc]init];C1.view.backgroundcolor=[uicolor Graycolor];C1.view.backgroundcolor=[uicolor Greencolor];c1.tabbaritem.title=@ "message";C1.tabbaritem.image=[uiimage image

The Office 2013 Client preview (Customer Preview) has been officially released and new versions of Office have changed in many ways. With more than 50 new functions added to Excel 2013, starting today, I'll introduce some of these new functions and attach an application example. The name of this series is called "Excel 2013 function early know", hope through this series can let your ancestors one step as soon as possible to master new features of Excel function, in use more handy. 1,formulatext

Tags: where example err how keyword POS update executes entry Sometimes you will need to write an insert SQL, or update if the primary key exists, or insert if the primary key does not exist. This usage is provided in MySQL: ON DUPLICATE KEY UPDATE . Let's see how it's used! First the original data for the database is as follows: a b c 1 b1 c1 2 b2 c2 3 b3 c3 This will cause an error if you execute the following SQL INSERT INTO test VALUES(1,‘b4‘,‘

Tags: cx_oracle python OracleDescription: The contents of this document are based on the Python 2.7.8 version. First, download cx_oracle: https://pypi.python.org/pypi/cx_Oracle/5.1.3650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/53/C2/wKioL1RvCPjzzRUhAAh1UUbWw-U757.jpg "title=" Picture 1.png "alt=" Wkiol1rvcpjzzruhaah1uubww-u757.jpg "/>Ii. Download Oracle Client Drive (Oracle Instant customer Basic): http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html

, 1 development managersSchema group: 2 Architecture Engineers (schema group not added sudo)DBA Group: 3 primary DBA (primary DBA not added sudo), 1 advanced DBANetworking group: 2 Primary Network management (Novice DBA does not join sudo), 1 advanced network managementBasic Command Description (not explained in detail later): useradd yun1 echo "123456" | password--stdin yun1 This is to create a yun1 user and then output a 123456 to passwd and then passwd put this String character as the passwo

( "5030F3AB721E16C4AB180CDA"), "C2", 30} > Because the values of Upsert and multi are not specified, all defaults to false, as the result shows, only the first record that meets the criteria is modified.Example 2: Change the class name of count greater than 20 to C4, set multi to TrueShell Code >db.classes.update ({20}},{$set: { >db.classes.find () {" 5030F3A3721E16C4AB180CD9 "), " name " : "

us is higher, it indicates that the user process consumes more CPU time, if the long-term greater than 50%, need to consider the optimizer what.The B.sy column shows the percentage of time that the kernel process consumes the CPU. When the value of SY is higher, it indicates that the kernel consumes more CPU time, and if Us+sy exceeds 80%, it indicates that there is insufficient CPU resources.The C.id column shows the percentage of time the CPU is in idle state;The D.wa column represents the pe

Click "Start" → "Run", enter "command" (Windows 9x/me operating system) or "cmd" (Windows NT/2000/XP operating system, you will open the Command Prompt window, enter "Debug" and return, and the "?" will appear. or "-" to indicate that you are running the debug program, press "Alt+enter" to Maximize the window so that we can do a full screen test, and then directly enter "F b800:00 f9f 20 70" full screen white, "F b800:00 f9f 20 40" full screen red, "F b800:00 f9f 20 20" full Screen green,

find out the average score of each section and the students ' total points. 　　3, ranking sorting; Click the "data → sort" command, select "Main keyword" as "total score", Sort by "descending", and then rank according to total score. Use the AutoFill feature to fill in the serial number 1-23 in J2 to J24, enter "1" in K2, and enter "=k2* (I3>=I2) +j3* (I3 Then select the K3 cell, use the automatic padding to drag down, the rank is lined up. 　　4, statistical results; In the drawing of