the return value VAR salary number; exec:salary:=get_sal (7369); PRINT salary; Mode two: Call function directly in SQL statement SELECT get_sal (7369) from DUAL; way three: Use Dbms_output call function SET serveroutput on EXEC Dbms_output.put_line (' Wages are: ' | | get_sal (7369));Delete functions drop function get_sal;
Create a PackageA package is a PL/
Tags: array rar organization Throw exception build log job schedule exec expressionThis week's book is the Ultimate guide to Oracle's C PL (SQL) programming, published by the mechanical industry press, Sun Fingdong, Wang Yu, Guo Xiaohui.
Content Introduction:
The ultimate guide to Oracle 12c
programs more robustOf course, in addition to these advantages, PL/SQL has other advantages, such as better performance, portability and compatibility, maintainability, ease of use and speed, and the ability to define identifiers to increase program readability.Iii. PL/SQL blocksThe
Oracle pl/SQL programming the use of SQL statements select must have a return record, do not report an error saying that no data is found and must have an into select statement to return one and only one record cannot be written as where deptno = 10 because multiple records
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
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 Boolean NOT null Defalut false;Note: The use
Pl/SQL programming data type in Oracle pl Programming Data Type: www.2cto.com 1. scalar type (scalar) 2. composite 3. reference Type 4.lob( large object) -------------------------------------------------------------- case 1 of def
anchored declaration Data types for Orache VARCHAR2: Stores variable-length characters. Parameters must be set to the maximum length of the character data, up to 32767. Do not use constants or variables to make the maximum length: you must use the literal value of the integer type. Database column has a maximum width of 4000 bytes CHAR: Stores the field characters, parameters are optional. Do not use constants or variables to make the maximum length: you must use the literal value of the intege
Tags: make line home strong close End Statement stat data type Zha
The native installation of Oracle, the default is the boot service, boot time is too slow, shut down, need to open the service:
OracledbconsoleorclOracleoradb10g_home1isql*plusOracleoradb10g_home1tnslistenerORACLESERVICEORCL This behind the ORCL is the database name, the official term is called the database SID2. Open PL
The case of PL/SQL programming specification
As in SQL, Pl/sql is case-insensitive. Its general guidelines are as follows:
Keywords (BEGIN, EXCEPTION, end, IF THEN else,loop, End LOOP), data type (VARCHAR2, number), internal fun
rounding), and put the result into a variable: v_ your initials (for example: V_zs), and then output to the screen.2. Create and execute a PL/SQL program block, query the maximum salary in the EMP table of the Scott scheme, and put it into a variable: v_ your initials (for example: V_zs) and then display it on the screen.3. Create and execute a PL/
Oracle Database Programming: Develop PL/SQL subprograms and packages to develop PL/SQL subprograms and packages: subprograms: Compile rather than run at run time. Only calls can produce results. Subprograms are divided into store
What pl/SQL must understand:1. process, function, trigger is pl/SQL programming2. process, function, and trigger are in Oracle3. pl/SQL is a very powerful database process Language4. process. functions can be called in java progra
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/SQL
The plsql block that only contains the execution part setserveroutputon -- open the output option begindbms_output.put_line (
Only pl/SQL block including execution part set serveroutput on -- open the output option begin dbms_output.put_line (
Pl/SQL block that only contains the execution part
Set serveroutput
Oracle Database Programming: Change Data and management items in PL/SQL change data and manage items in PL/SQL: returning clause of DML statements: to obtain the information after the insert, update, and delete statements are exec
%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
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