sql pl sql tutorial pdf

Tags: style blog http color io using Java ar StrongSometimes we need to do some slightly more complex operations on the data in the database, and these operations are all one-time and are no longer used after they are exhausted.It is too cumbersome and wasteful to use stored procedures, and to be deleted when it is exhausted. and a single SQL cannot meet the requirements. This is the time to use the SQL sta

Book Description Oracle PL/SQL recipesIs yourGoBook for PL/SQL programming solutions. it takes a task-oriented approach to PL/SQL programming that lets you quickly look up a specific task and see the pattern for a solution. then

Original: PL/SQL Developer how to connect a 64-bit Oracle plotDue to the continuous updating of hardware technology, Win7 system gradually become mainstream, and computer memory gradually increased, in order to make full use of memory resources (because 32 of the system can only use up to 3G of memory), improve system performance, many people began to use the Win7 (64Bit) system. A 64-bit Oracle database is

a record matching the criteria can be found in the cursor, the result is trueSql> Declare 2 3v_id t1.id%type; 4 5 begin 6 7V_ID:=Ten; 8 9 Delete fromT1whereId=v_id;Ten One ifSql%Found Then ADbms_output.put_line ('T1 Recorder is delete!'); - Commit; - End if; the End;3.sql%rowcout statistics The number of records processed in the cursorSql> Declare 2 3v_id t1.id%type; 4 5 begin 6 7V_ID:=Ten; 8 9 In

Boolean is a type of PL/SQL data. Logical values are true and false. Only logical operators can be applied to boolean variables. The Database SQL type does not support BooleanType. Only PL/SQL is supported. Therefore, you cannot insert or retrieve boolean values in the datab

Oracle is a large database with a C/SClient/Server structure. It is mainly used in the 4GLSQL language and has the advantages of being powerful, simple, and easy to learn. The working process of the C/S structure is: when the client c end) inputs and sends an SQL statement, it will be sent to the server S end through the network ), the result is analyzed and executed, and then returned to the client through the network. At this time, the client can se

Tags: Nextval SQL statement throws exception handling implicitly no i+1 func has a1. Database design: For user-specific needs, then we create a most practical and high performance database! Steps for database design: 01. Demand Analysis 02. Conceptual Structure Design 03. Logical Structure Design 04. Physical Organization Design 05. Implementation of the database 06. Operation and maintenance of the database 3 major paradigms of the database: 1. Ensur

Label:Easy to use PL/SQL developer Related settings some time ago, the company internal Training PL/SQL related knowledge, here I think very convenient settings to share to everyone. 1. When using PL/SQL developer, it is convenien

I usually encounter some problems in PL/SQL programming. I will summarize them in the form of Q A for you to share. 1. Can pipelines be used to improve processing efficiency when you need to load a large amount of data streams to a table or process a large amount of data streams?MPs queue functions are very convenient for improving the performance of parallel queries. they speed up data loading to tables.

Basic PL/SQL entry cursor PL/SQL: a programming Language combined with a Structured Language (Structured Query Language). It is an extension of SQL and supports multiple data types, such as large objects and Collection types, you can use control statements such as conditions

I have been working on Oracle databases for more than a year. My favorite part is PL/SQL. This is Oracle's data programmable language, which can be used to combine procedural code with SQL code. The most interesting thing is that we can use it to develop the entire application in one place. All data selection and updates, all HTTP and HTML outputs that interact w

PL/SQL Developer connects to the Oracle (64Bit) diagram installed on Windows 7. Thanks to the continuous update of hardware technology, Windows 7 has gradually become the mainstream and the computer memory has gradually increased, to make full use of memory resources (because 32 is the system can only use about 3 GB of memory) and improve system performance, many people begin to use Win7 (64Bit) systems. Th

I. Case Study A database has two tables about employee information, salary, and department information of a company. They are EMP and dept tables. The structure of the two tables is as follows: The requirements are as follows: 1. Create a corresponding table according to the structure of the table above, and write 5 combination data into each table. 2. The related table is manipulated to increase the salaries of employees in the "Technical Department" by 20%. 3. Create logs to track salary chang

Tags: Oracle plsql procedure function in out  Pl-sql storage functions and stored proceduresORACLE provides the ability to store PL/SQL programs in a database, and can run it from anywhere. This is called a stored procedure or function.Procedures and functions are collectively known as

Tags: style blog http io strong for file Data 2014Export/import icons are grayed out:Cause: The associated application is not associatedMenu Bar-- T-ools--Import Tables ...--Oracle ImportExport Executable : %oracle_home%\bin\imp.exe Output file:c:\documents and settings\administrator\ desktop \eam.dmpPL/SQL Developer is the primary tool for importing or exporting databases in an Oracle database , and this article mainly describes the process of import

Tags: oracle plsql cursor Explicit Leng-type cursors  Use of Cursors① Cursor ConceptIn order to handle SQL statements, ORACLE must allocate a region called the context area to process the required information.This includes the number of rows to be processed, a pointer to the representation of the statement being parsed, and the active set of the query.A cursor is a handle (handle) or pointer to a context. with cursors,

PL/SQL Developer is an integrated development environment that specializes in developing applications for Oracle databases. At the same time, PL/SQL is a procedural languageCalled the process SQL language (procedural language/sql)

1. What is the cursor? Oracle uses two types of cursor: explicit cursor and implicit cursor. No matter how many records are returned by the statement, PL/SQL implicitly declares a cursor for each SQL command, such as UPDATE, DELETE, and INSERT. To manage SQL statement processing, you must implicitly define a cursor fo

--Basic structureDECLARE--Variable declaration section: this declares the variables, types, cursors, and local stored procedures and functions used in PL/SQLBEGIN--Execution part: process and SQL statement, which is the main part of the programEXCEPTION--Execution Exception section: Exception HandlingEND;--pl/sql Basic

PL/SQL Developer is the main tool used to import or export databases in Oracle databases. This article mainly introduces the process of using PL/SQL Developer to import and export databases, some precautions for import or export are described. Next we will introduce them one by one.Export Steps:1 tools-> export user ob