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There are a several ways of declaring variables in SQL*Plus scripts. The first is to use VAR, to declare a bind variable. The mechanism for assigning values to a VAR is with an EXEC call: SQL> var name varchar2(20) SQL> exec :name := 'SALES' PL/SQL procedure successfully completed.
In SQL Server we can use this: DECLARE @variable INT; SELECT @variable= mycolumn from myTable; How can I do the same in Oracle? I'm currently attempting the following: DECLARE COMPID VARCHAR2(20);
5 lip 2011 · In ORACLE SQL Developer 20.2.0.175, we can Run Script (F5): DEFINE usr = 'YourName'; SELECT * FROM Department WHERE created_by = '&usr';
This Oracle tutorial explains how to declare variables in Oracle / PLSQL with syntax and examples. In Oracle / PLSQL, a variable allows a programmer to store data temporarily during the execution of code.
If you want to use the value of a bind variable in a SQL*Plus command, it must first be copied to a substitution variable. SQL*Plus commands such as SPOOL, SET and TTITLE are executed in the SQL*Plus program and are not passed to the database for execution.
After completing this lesson, you should be able to do the following: • Recognize valid and invalid identifiers. • List the uses of variables. • Declare and initialize variables. • List and describe various data types. • Identify the benefits of using the %TYPE attribute. • Declare, use, and print bind variables.
Declaring variables. The syntax for a variable declaration is as follows: variable_name datatype [NOT NULL] [:= initial_value]; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) In this syntax: First, specify the name of the variable.
