ultraviewer manipulatepacket error : 1 :object variable or with block variable not set

Local variables - These are declared in a inner block and cannot be referenced by outside Blocks.

Based on their declaration we can classify variables into two types. The variables declared in the inner blocks are not accessible to outer blocks. Therefore, a variable which is accessible to an outer Block is also accessible to all nested inner Blocks. PL/SQL allows the nesting of Blocks within Blocks i.e, the Execution section of an outer block can contain inner blocks. DECLARE var_salary number(6) var_emp_id number(6) = 1116 BEGIN SELECT salary INTO var_salary FROM employee WHERE emp_id = var_emp_id dbms_output.put_line(var_salary) dbms_output.put_line('The employee ' || var_emp_id || ' has salary ' || var_salary) END / NOTE: The backward slash '/' in the above program indicates to execute the above PL/SQL Block. The General Syntax is: SELECT column_name INTO variable_name FROM table_name Įxample: The below program will get the salary of an employee with id '1116' and display it on the screen. We can assign values to variables in the two ways given below.ġ) We can directly assign values to variables.Ģ) We can assign values to variables directly from the database columns by using a SELECT. The value of a variable can change in the execution or exception section of the PL/SQL Block.

DECLARE salary number(4) dept varchar2(10) NOT NULL := “HR Dept” When a variable is specified as NOT NULL, you must initialize the variable when it is declared.įor example: The below example declares two variables, one of which is a not null. * “salary” is a variable of datatype number and of length 6.

Each variable declaration is a separate statement and must be terminated by a semicolon.įor example, if you want to store the current salary of an employee, you can use a variable.

value or DEFAULT valueis also an optional specification, where you can initialize a variable.

NOT NULL is an optional specification on the variable.

variable_name is the name of the variable.

General Syntax to declare a variable is variable_name datatype These are placeholders that store the values that can change through the PL/SQL Block. Number (n,m), Char (n), Varchar2 (n), Date, Long, Long raw, Raw, Blob, Clob, Nclob, Bfile PL/SQL Variables Define PL/SQL Placeholdersĭepending on the kind of data you want to store, you can define placeholders with a name and a datatype.įew of the datatypes used to define placeholders are as given below. Oracle defines placeholders to store data temporarily, which are used to manipulate data during the execution of a PL SQL block. PL/SQL Placeholders can be any of Variables, Constants and Records.

Ultraviewer manipulatepacket error : 1 :object variable or with block variable not set