statement labeled by the label. There are some restrictions on the goto statement in PL/SQL, which is illegal for blocks, loops, if statements, to jump from the outer to the inner layer.
X: = 100;For V_counter in 1..10 LOOPIF V_counter =4 ThenGOTO End_of_loopEND IFx:=x+10;NullEND LOOPY:=x;
Note: null is a valid executable statement. NestingThere can be another program block inside the block. This is known as nesting. Nesti
Php exports the data structure and generates a. SQL file. The php Tutorial exports the data structure and then generates the. SQL file $ database; database tutorial name $ optionsarray (hostname, IP address charsetutf8, encoding filename $ database.. s php Tutorial exports t
1. The MAGIC_QUOTES_GPC option in PHP tutorial configuration file php.ini is not turned on and is set to off 2. The developer does not check and escape the data type
But in fact, the 2nd is the most important. I think that checking the type of data entered by the user and submitting the correct data type to the MySQL tutorial should be the most basic quality of a web programmer. But in reality, many small
Tags: SQL query statement SQL statement SQL Tutorial SQL language SQL database tutorialOracle SQL Language Foundation and Environment readiness-beyond OCP proficient Oracle Video
SQL Server 2016 CTP2.2 installation and configuration method graphic tutorial, 2016ctp2. 2
SQL Server 2016 CTP2.2 installation and configuration tutorial
Download an isofile and decompress it (about 2.8gleft and right). In this example, double-click setup.exe to start installation.
Install. NET 3.5 SP1 first, and add r
Ms SQL Server Management Studio Express installation graphic tutorial
Microsoft SQL server Management Studio Express (SSMSE) is a free and easy-to-use graphic Management tool for managing SQL Server 2005 Express Edition and SQL Server 2005 Express Edition with advanced servi
Tags: SQL query statement SQL Tutorial SQL language SQL database tutorialOracle SQL Language Query statement-beyond OCP proficient in Oracle video tutorial training 29This course introd
In this tutorial we introduce the tool--BCP utility for bulk data export import. It also introduces BULK INSERT import bulk data, and the practice of bcp combining BULK INSERT to do data interface (practice on SQL2008R2).1. Use of bcpThe BCP utility can bulk copy data between Microsoft SQL Server instances and data files in a user-specified format. Use the bcp utility to import a large number of new rows in
The following articles mainly introduce the basic tutorial of SQL coding optimization for the IBM DB2 database. The importance of such a specific query is that the more important the query is, you may need to optimize indexes by creating indexes. If you are coding the query that the CIO is running every day, make sure it provides the best performance.
Therefore, it is important to create an index for this s
This article describes how to use the database configuration and SQL operation instance tutorial in the PHP Yii framework. Yii supports binding multiple databases. This article provides an example of the use of various query statements in Yii, for more information, see
Database Access (DAO)Yii contains a data access layer (DAO) built on php pdo ). DAO provides a unified set of APIS for different databases.
classic example of database use. It's okay if I understand it and use the data. I will be too lazy to write it again.
If you encounter some problems, maybe this article will help you: http://blog.csdn.net/yangyuankp/article/details/7208413
In addition, we can see that the class table in this tutorial depends on the grade Table and the student table depends on the class table. Therefore, when deleting a record, you must delete the record in a casc
to authenticate:Note: The server name must be filled in: "Your computer name \SQLExpress", write What "(local)" or "127.0.0.1" there will be errors, the first "Authentication" select "Windows identity Authentication", then click "Connect", then:As for the follow-up we write the program even SQL Server can not use Windows authentication, to use SQL Server authentication, you can add a new account, set the p
SQL Server 2016 CTP2.2 install configuration tutorial
Download an ISO file and extract it (about 2.8G or so), and then double-click the Setup.exe to start the installation.
Install the. NET 3.5 SP1 Before you install and install it in Server Manager-add roles and features
Open the Installation interface
The installation interface has always been familiar, and this installation interface has not chan
Where tText. fTopID = @ fTopID)If @ fTextCount> 0BeginDelete From tText Where tText. fTopID = @ fTopIDDelete From Navtion_NodeSubject Where fTopID = @ fTopIDDelete From Navtion_TopSubject Where fTopID = @ fTopIDEndElseBeginDelete From Navtion_NodeSubject Where fTopID = @ fTopIDDelete From Navtion_TopSubject Where fTopID = @ fTopIDEndEndElseBeginDelete From Navtion_TopSubject Where fTopID = @ fTopIDEndIf @ Error = 0Commit TransactionElseBeginRollback Transaction my_Save1Raiserror ('deletion erro
Php imports phpmyadmin to generate SQL files. Share my methods. Only the SQL file exported by myadmin in the php Tutorial is valid $ dbfiletest. SQL; $ contenticonv (UTF-8, gb2312, file_get_contents ($ dbfile); obtain the created data and share my methods. Only valid for SQL
"Persons", the rows are also listed. SQL Union and UNION ALL operator SQL UNION operatorThe UNION operator is used to combine the result set of two or more SELECT statements.Note that the SELECT statement inside the UNION must have the same number of columns. The column must also have a similar data type. Also, the order of the columns in each SELECT statement must be the same.SQL UNION Syntax Select colum
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