Prerequisite – PL/SQL introduction
In PL/SQL code groups of commands are arranged within a block. A block group related declarations or statements.
In declare part, we declare variables and between begin and end part, we perform the operations.
Here, first, we take three variables num, fact, and temp and assign the value in num variable (i.e which number factorial we want).
And then after we assign fact variable to 1.
What is PL/SQL Subprograms? Subprograms are named PL/SQL blocks that can be called with a set of parameters. PL/SQL has two types of subprograms, procedures, and functions. Subprograms have: A declarative part, with declarations of types, cursors, constants, variables, exceptions, and nested subprograms. PL/SQL Function. The PL/SQL Function is very similar to PL/SQL Procedure. The main difference between procedure and a function is, a function must always return a value, and on the other hand a procedure may or may not return a value. Except this, all the other things of PL/SQL procedure are true for PL/SQL function too. Syntax to create a. Write a program in PL/SQL to print the factorial of a number. In this post I will explain how to get the factorial of any given number. For that first you need to know what is the procedure to find the factorial of a number. To find the factorial number of given values using SQL commands. Algorithm: Step 1: Start the program. Step 2: Declare the values in declare block. Step 3: Execute the SQL commands in begin end block. A good programming practice is to avoid implicit conversion. Consider the definition of n factorial (n!), the product of all integers from 1 to n: n! PL/SQL provides the function result cache, but you choose the caching granularity.
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Examples:
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Below is the required implementation:
-- and temp of datatype number fact number := 1; -- with the help of while loop loop temp := temp -1; end loop; dbms_output.put_line( 'factorial of ' || num || ' is ' || fact); end ; -- Program End |
Output :
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