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Create-a-PLSQL-package-with-procedure-that-take-designation-and-incentive.html
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<h1 class="mb-4" style="font-weight: 800;">Create a PLSQL Package with Procedure that take Designation and Incentive </h1>
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<span class="d-inline-block mt-1">By DarkSoul</span>
<span> - July 16, 2024</span>
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<p>Create a PL/SQL Package with Procedure in it. Procedure will take designation and incentive as input and update the employee salary by adding the incentive for the given designation. Display the number of employee records that have got updated, e.g. '3 employee(s) are updated'.</p>
<p>Table: EMPLOYEE</p>
<table class="table table-hover table-dark table-striped mt-4 mb-4" style="max-width: 400px;">
<thead>
<tr>
<th>COLUMN</th>
<th>DATATYPE</th>
<th>CONS.</th>
</tr>
</thead>
<tbody>
<tr>
<td>EMPID</td>
<td>NUMBER(5)</td>
<td>PK</td>
</tr>
<tr>
<td>EMP_NAME</td>
<td>VARCHAR2(25)</td>
<td>NOT NULL</td>
</tr>
<tr>
<td>SALARY</td>
<td>NUMBER(10,2)</td>
<td></td>
</tr>
<tr>
<td>DESIGNATION</td>
<td>VARCHAR2(25)</td>
<td></td>
</tr>
</tbody>
</table>
<pre>
EMP_ID EMP_NAME SALARY DESIGNATION
101 Mathew 45000 PROGRAMMER
102 Sam 54000 MANAGER
103 John 35000 TEAM LEAD
104 James 48000 PROGRAMMER
105 Josh 25000 TESTER
</pre>
<p>
<b>Functional Requirement:</b>
Package name as EMP_DESIGNATION, and Procedure signature:
EMP_DETAILS(design employee.designation%TYPE, incentive number);
</p>
<strong>(Hint: Data is case sensitive. Use '/' to terminate the PLSQL block)</strong>
<div class="col-md-12 mb-4" style="display: flex;">
<textarea disabled id="plsql">
SET SERVEROUTPUT ON;
CREATE or REPLACE PACKAGE EMP_DESIGNATION
AS
PROCEDURE EMP_DETAILS (design Employee.designation%type, incentive number);
END EMP_DESIGNATION;
/
CREATE or REPLACE PACKAGE BODY EMP_DESIGNATION
AS
PROCEDURE EMP_DETAILS (design Employee.designation%type, incentive number)
IS
BEGIN
UPDATE Employee
SET Employee.SALARY = incentive + salary
WHERE Employee.DESIGNATION = design;
dbms_output.put_line(SQL%ROWCOUNT || ' employee(s) are updated.');
END EMP_DETAILS;
END EMP_DESIGNATION;
/
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<h2>
Step-by-Step Guide to Create a PL/SQL Package with Procedure that take Designation and Incentive
</h2>
<p><b>Step 1: Setting Up for Output:</b><br>
First, we ensure that the output from the database is visible by enabling server output. This will allow us to see messages from the PL/SQL code.</p>
<p><b>Step 2: Creating the Package Specification:</b><br>
We define a package named EMP_DESIGNATION. Think of a package as a container for logically grouped procedures, functions, and other PL/SQL constructs.<br>
Inside this package, we declare a procedure called EMP_DETAILS. This procedure will take two parameters:
<ul>
<li>design which represents the employee's designation (job title).</li>
<li>incentive which is a numeric value to be added to the employee's salary.</li>
</ul>
</p>
<p><b>Step 3: Creating the Package Body:</b><br>
We then create the body of the package, which contains the actual implementation of the EMP_DETAILS procedure.<br>
In the procedure:
<ul>
<li>We specify that we want to update the Employee table.</li>
<li>For employees with a particular designation (as passed in the design parameter), we add the incentive amount to their current salary.</li>
<li>After the update operation, we use dbms_output.put_line to display the number of employees whose salaries were updated. This uses SQL%ROWCOUNT to get the count of rows affected by the UPDATE statement.</li>
</ul>
</p>
<p><b>Recap:</b><br>
The <b>package</b> (EMP_DESIGNATION) is like a folder that groups related procedures.<br>
The <b>procedure</b> (EMP_DETAILS) inside the package updates the salary of employees with a specific designation.<br>
The <b>parameters</b> passed to the procedure are:
<ul>
<li>design: The specific job title of employees whose salary you want to update.</li>
<li>incentive: The amount to be added to each of these employees' salaries.</li>
</ul>
After the update, the procedure outputs how many employees were updated.</p>
<p>This setup allows for organized, reusable, and easy-to-maintain code for managing employee designations and salary updates in the database.</p>
<div class="pt-5">
<p>Categories: <a href="category-pl-sql.html">PL/SQL Hands-on</a> Tags: <a href="#">#Create a PLSQL package with procedure that take designation and incentive</a>, <a href="#">#PL/SQL</a></p>
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