current block

1>>>>> exception error Handling1 > Pre-defined exception handling Partial ORACLE exception errors for predefined descriptions The handling of such exceptions is simply to refer to the exception-handling section of the PL/SQL block, directly

1. What is an exception a warning or error condition in PL/SQL can be referred to as an exception. Includes compile-time errors (PLS) and run-time errors (ORA). An exception usually contains an error code and error text, indicating the number of

It has been used for more than two years, and the manual has been flipped over. Although now not how to use vim, once the notes are posted out, and like vim friends to share.1. About VIMVim is my favorite editor and the second most powerful editor

1. About VIM Several modes of 1.1 vim 2. Start Vim 3. Document operations 4. Movement of the cursor 4.1 Basic Movement 4.2 Turning screen 4.3 marks 5. Inserting text 5.1 Basic

Draw is to draw out the graphical interface keytest is to get the keyboard Tetris is the whole gametetris.sh#!/bin/bashapp_name= "${0##*[\\/]}" app_version= "1.0" #颜色定义iSumColor =7# total colors cred=1# red cgreen=2# green cyellow=3# Yellow cblue= 4#

Preface: Haven't written a blog for a long time, because they are engaged in bitcoin this thing, now most of the internet is a number of conceptual things, the real content is not much, hear the most words is to center, to the third party, which

What is AWR? AWR (Automatic workload Repository) A bunch of historical energy data, placed on the Sysaux table space, AWR and Sysaux are all 10g, are the key features of Oracle tuning; About 1999 years began to develop, has been 15 years of

Original JS version * * * startWindow.onload=function () {Shared function Areavar ibase={document.getElementByIdId:function (name) {return document.getElementById (name)},Get elements from classGetbyclass:function (Name,tagname,elem) {var c=[];var

SOURCE Package Path: github.com/ethereum/go-ethereum/consensus/ The definition of the consensus algorithm engine interface is as follows Type Engine Interface {//Author retrieves the Ethereum address of the account that minted the given//block,

I. SummaryIn the development process of Plsql program, it is very important to monitor and deal with the program exception, including how to trigger the exception, when to deal with it, how to handle it, whether to centralize all the exceptions in

Oracle-based application system many performance problems are caused by poor application SQL performance, so, SQL performance optimization is very important, analysis and optimization of SQL performance we generally look at the SQL implementation

First, the conceptUser-defined exception errors are triggered by explicitly using the RAISE statement. When an exception error is thrown, the control moves to the exception block exception error section and executes the error-handling code.For

I. OverviewUndo saves the old data. For example, if you modify a record to modify the A-column ABC to Def, then undo holds ABC. There are two purposes: 1. If your transaction is not committed, but the column A has been modified, then someone reading

Firebug is a development plug-in under Firefox, and is now one of Firefox's five-star powerful recommendation plug-ins. What is Firebug?After several years of Web development work, I feel that there are higher requirements for WEB development. Write

Sort out some parameters of the execCommand command in dom. For more information, see. 2D-Position allows you to move an absolute position object by dragging it. AbsolutePosition: Set the position attribute of the element to "absolute" (absolute

Today, we will not only be constrained by this library and some basic programming knowledge, but also make a simple small project. You can use several methods to create a tab that displays the corresponding content when you move the cursor up or

To use the C language to implement Tetris, you must first solve the following problems: 1. How to draw a graphical interface using C language EasyX graphics library (http://www.easyx.cn) is TC graphics library porting under VC. Include library #

Oracle Block scn/commit scn/cleanout scn description 1. description: The cache header part of the Block records a block scn, which is the timestamp of the last change of the current Block. To be exact, this update does not refer to the latest update

The ExecCommand method is to execute a command against the current document, the current selection, or the given range. Commonly used when working with HTML dataFormat: Document.execcommand (scommand[, interactive mode, dynamic parameter]), where:

Chunking algorithm----------------------------------------------------------1. ThoughtIf we need to operate on a particular sequence, then a very intuitive and simple method is pure violence (no, that's called impersonation).But if the violence can