How To Declare a Local Variable

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How To Declare a Local Variable? - Oracle DBA FAQ - Understanding PL/SQL Language Basics

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A local variable can be defined in the declaration part with a declaration statement, which is a variable name followed a data type identifier. Below are some examples of declaration statements:

PROCEDURE proc_var_1 AS
  domain VARCHAR2(80);
  price REAL;
  is_for_sale CHAR;
BEGIN
  -- Executable statements
END;

2007-04-30, 6247👍, 0💬

What Is an Anonymous Block
What Is an Anonymous Block? - Oracle DBA FAQ - Understanding PL/SQL Language Basics An anonymous block is a PL/SQL code block with no name. It consists of three parts: Declaration Part - Defining local variables and local procedures. Declaration part is optional. Execution Part - Defining execution ... 2007-04-30, 6118👍, 0💬

How To Initialize Variables with Default Values
How To Initialize Variables with Default Values? - Oracle DBA FAQ - Understanding PL/SQL Language Basics There are two ways to assign default values to variables at the time of declaration: Using key word DEFAULT - Appending "DEFAULT value" to the end of declaration statements. Using assignment oper... 2007-04-30, 6072👍, 0💬

What Is a Named Program Unit
What Is a Named Program Unit? - Oracle DBA FAQ - Understanding PL/SQL Language Basics A named program unit is a PL/SQL code block with an name. It consists of three parts: Declaration Part - Defining the program unit name, calling parameters, local variables and local procedures. Declaration part is... 2007-04-30, 5890👍, 0💬

What Is a Procedure
What Is a Procedure? - Oracle DBA FAQ - Understanding PL/SQL Language Basics A procedure is a named program unit. It consists of three parts: Declaration Part - Defining the procedure name, calling parameters, local variables and local procedures. Declaration part is required. Execution Part - Defin... 2007-04-30, 5859👍, 0💬

What Are the Logical Operations
What Are the Logical Operations? - Oracle DBA FAQ - Understanding PL/SQL Language Basics PL/SQL supports 3 logical operations as shown in the following sample script: PROCEDURE proc_comparison AS x BOOLEAN := TRUE; y BOOLEAN := FALSE; res BOOLEAN; BEGIN res = x AND y; res = x OR y; res = NOT x; -- m... 2007-04-30, 5822👍, 0💬

What Are the Types PL/SQL Code Blocks
What Are the Types PL/SQL Code Blocks? - Oracle DBA FAQ - Understanding PL/SQL Language Basics There are 3 types of PL/SQL code blocks: Anonymous Block - A block of codes with no name. It may contain a declaration part, an execution part, and exception handlers. Stored Program Unit - A block of code... 2007-05-01, 5707👍, 0💬

How To Assign Values to Variables
How To Assign Values to Variables? - Oracle DBA FAQ - Understanding PL/SQL Language Basics You can use assignment statements to assign values to variables. An assignment statement contains an assignment operator ":=", which takes the value specified on the right to the variable on left. The script b... 2007-04-30, 5689👍, 0💬

What Are the Arithmetic Operations
What Are the Arithmetic Operations? - Oracle DBA FAQ - Understanding PL/SQL Language Basics There are 4 basic arithmetic operations on numeric values as shown in the following sample script: PROCEDURE proc_arithmetic AS addition NUMBER; subtraction NUMBER; multiplication NUMBER; division NUMBER; BEG... 2007-04-30, 5620👍, 0💬

What Are the Numeric Comparison Operations
What Are the Numeric Comparison Operations? - Oracle DBA FAQ - Understanding PL/SQL Language Basics PL/SQL supports 6 basic numeric comparison operations as shown in the following sample script: PROCEDURE proc_comparison AS res BOOLEAN; BEGIN res := 1 = 2; res := 1 2; res := 1 = 2; res := 1 2; -- mo... 2007-04-30, 5543👍, 0💬

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