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". "DEPARTMENT_NAME") must be associated with numbers and custom error names; two variables: SQLCODE error code SQLERRM error content when an exception is thrown, these two variables will be automatically filled, these two values can be obtained to determine the error: 3: User-defined exception: first look at three examples and then explain: ex1: [SQL] SQL> DECL
function, Dbms_output is the system default package, Put_Line the method defined in the package, the function is output information; In Oracle, all changes to the database data do not directly manipulate the database, but are placed in the memory called the workspace. Permanent changes occur only after a commit statement has been executed.PL/SQL Program StructureBased on the above examples, the complete
PL/SQL blocks1) Anonymous blocks the previous examples do all anonymous blocks that do not have a name. 2) subroutine A. Process: can complete a series of additions and deletions to change the action of the "method." Example: Update specified name employee salary, the name does not differ from small to lowercase.Create or replace procedure Update_sal (P_ename VA
functions at the call point of this function. In other words, the function answers the question: "How did I get here?" ”Code Listing 1 shows the dbms_utility. Format_call_stack functions and examples of formatted substrings.Code Listing 1:dbms_utility. The display of the Format_call_stack functionsql> CREATE OR REPLACE PROCEDURE proc12 is3 BEGIN4 Dbms_output.put_line (Dbms_utility.format_call_stack);5 END;6/Sql
dba_objects;-object information of the entire database that the administrator can access 2. display the storage Object Information USER_OBJECTSIncluding columns (English is too simple to translate ):OBJECT_NAME: Name of the object OBJECT_TYPE: Type of the object, such as PACKAGE, FUNCTION, or TRIGGER STATUS: Status of the object-VALID or INVALID LAST_DDL_TIME: Time stamp indicating the last time this object was changed Here are several examples: 1) s
PL/SQL provides three common set union arrays, nested tables, and variable-length arrays, PL/SQL provides corresponding functions or procedures for operation. Element or subscript in the vertical array. These functions or procedures are called set methods. A set method is a function or process built into the set and ca
Label: The execution and exception parts of PL/SQL in Oracle I. The executive section of PL/SQL. An assignment statement. Assignment statements are divided into two types, one defining a variable and then receiving the user's IO assignment, and the other is assigning a value to the
Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the following sources, otherwise, the legal responsibility to pursue copyright.Deep Blue Blog:http://blog.csdn.net/huangyanlong/article/details/41479997After installing the 64bit oracle11g database, use PL/SQL to connect the database to solve the "Chinese characters" garbled problemSite Environment Oper
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: 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
installer Setup.exe file and click the "Next,continue" button to install the success4: Import Oracle Clientinstantclient-basic-win32-10.2.0.5 for Green Software, for: http://www.oracle.com/technetwork/indexes/downloads/index.htmlAfter the download is complete, upload to the server, unzip to the/root/.cxoffice/winxp/drive_c/program files directory, and rename instantclient where "WinXP" is the name of crossover bottle, You can also specify a new bottleCreate the Network/admin directory under the
developing applications.Its syntax is as follows:GOTO Label_name;Where Label_name is the label name that is already defined. Note that when you use GOTO to jump to a specific label, you must include at least one executable statement after the label. Examples are as follows:DeclareI int:=1;BeginLoopINSERT into temp values (i);If i=10 ThenGoto End_loop;End If;i:=i+1;End Loop;Dbms_output.put_line (' End of cycle ');End/As shown above, when the above
PL/SQL Developer Import and Export database method and illustrate how well does you KNOW the APPLE UNIVERSE?In, Apple became the first company worth how much?Which religion did Steve Jobs practice?What is one of the Apple protects its secrecy?In 1981, "Woz" is in a plane crash and suffered which effect?Why does Steve Jobs leave his job designing video games at At
oracle| Data | Database in the database operation is often the case occurs, due to a momentary negligence and mistakenly deleted or mistakenly changed some important data, in addition to some important tasks need to run periodically. Obviously, the first kind of problem is mainly data backup and recovery, the latter is mainly the task scheduling of the system. In this paper, we will give a solution to these two types of problems from the perspective of application development. A Technical Basics
We know that there is an overhead for running SQL statements in PL/SQL programs, because SQL statements must be submitted to the SQL engine for processing. The transfer of control between PL/S
variable, or function2.1. Examples of scalar definitionsDefines a variable-length stringV_name VARCHAR2 (10);Defines a decimal range -9999.99~9999.99V_sal Number (6,2)Define a decimal and give the initial value 6.6 Note:: = is a variable assignment number for PL/SQLV_num Number (6.2): =6.6Define data for a date typeV_date date;Set a Boolean variable that cannot be null and the initial value is false;V_bool
I found a This book starts with some of the most basic knowledge and works with easy-to-understand examples to help you get started with simple knowledge points at and then go deeper step by step, each step will be used in concert with the example to explain to you. One small step at a time is the foundation of the next step, until the usage is relatively advanced. Oracle10g PL/
The execute immediate replaces the previous Oracle8i Dbms_sql package. It parses and executes a dynamic SQL statement or a PL/SQL block that is not created at runtime. Dynamically create and execute SQL statements performance ahead, execute The goal of IMMEDIATE is to reduce enterprise costs and get higher performance,
.) You can use records to retrieve information from the returning clause of DML statements. It is usually useful to keep a local copy when updating data for subsequent PL/SQL operations. Before Release 2, we can use the returning clause to store data somewhere after computation and call are complete. In Release 2, data can be stored in a record. For example, the following is the
In Linux/Unix, apart from calling SQL, calling PL/SQL is also a common situation for DBA. The following mainly uses some examples to show how to call PL/SQL under shell. Other related references:Linux/Unix shell scripts call
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