oracle database 11g pl sql programming

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 Organizat

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

Prior to the project because of the need to use the Oracle database, due to limited time to start learning from the foundation, and Oracle operation of the command interface is too unfriendly, so found the PL/SQL developer This very useful software to use the

Pl/SQL block that only contains the execution part Set serveroutput on -- enable output options Begin Dbms_output.put_line ('hello '); End; Instructions: Dbms_output is a package provided by Oracle locks (similar to java). This package contains some processes. put_line is a process in the dbms_output package. The set serveroutput on Clause indicates that t

1, to use PL/SQL need to install the Oracle client (this is necessary, otherwise plsql will not use, this client can go to Oracle official Web download, called instance client, as far as possible with the newer version on it, The Windows version of the big is more than 50 m, as well as the lite version of more than 20

In recent times, many netizens raised questions about Listener Configuration, and the client cannot connect to the server ). This article briefly introduces the Listener Configuration, provides detailed configuration methods for PL/SQL developer to connect to the Oracle database, and puts forward some solutions that th

Tags: Speed connection number path database connection fix Chinese garbled ice Customer DESC protocolIn the case of enterprise development, the database (Oracle) is typically installed locally, and the Oracle database is large and installed locally, slowing down the computer

%rowtype; --Define variables that can store an EMP table row of data begin SELECT * into Rowvar_emp from EMP where empno=7369; /* Output Employee information */ dbms_output.put_line (' Employees ' | | rowvar_emp.var_ename| | ' The position is ' | | rowvar_emp.var_job| | ' wages are ' | | Rowvar_emp.var_sal); end; /Output Result:Employee Smith's job is clerk, salary is 2712.5-----------------------------------define variables and constants-----------------------------------1. Defining variablesC

database. 3. Connect to the database using PL/SQL developerThe database is populated with the service_name of the remote databases ,Note: According to the actual user name, password and database:User name: Gateway Password: Gateway

Tags: div list direct. com PNG restart path instance articleThe Oracle database is not installed locally, but you want to use PL/SQL to connect to the server-side database. 1. Create a new network folder, under which you create a new admin folder under which to create a new

; --------------------------------------------------------------------Cursor------------------------------------------------- --explicit cursors, reading employee information Declare cursorCur_emp (var_jobinch varchar2:='salesman') is SelectEmpno,ename,sal fromscott.empwhereJob=Var_job; Type Record_emp isrecord (Var_empno scott.emp.empno%type, Var_ename scott.emp.ename%type, var_sal scott.emp.sal%type); Emp_row record_emp; begin OpenCur_emp ('MANAGER'); FetchCur_emp intoEmp_row; whileC

cascadeINSERT into Person3 values (3, ' Yuan ', ' Weixiang ', Varray_phone (' 12345 ', ' 34567 ', ' 56789 ', ' 34567 ', ' 56789 '));4. Cursors? Description: In PL/SQL programming, it is sometimes necessary to do a row-by-line processing of the query return result set, which requires that the query return the result set to a memory area, in order to be able to pe

Tags: prot cal appears application Evel directory name connect directory ZHS16GBKFirst, on the official website to download the corresponding version of PL SQL, the machine is 64-bit download 64-bit, URL: Https://www.allroundautomations.com/downloads.html#PLSClick the application. exe file to install.Installation is successful, open, there will be a need to register the pop-up window, enter the following re

the number of elements in the variable-length array. Alter type varray_phonemodify limit 2 cascade -- an error is reported. The varray limit can only be increased. Alter type varray_phonemodify limit 5 cascade Insert into person3 values (3, 'yuanyuan ', 'weixiang', varray_phone ('000000', '000000', '000000', '000000', '000000 ')); 4. cursor Introduction: In the PL/SQL program design, you sometimes need to