Develop a PL/SQL block that would go through all the employees from EMPLOYEES table who work in department_id= 90   (there is suppose to be 3 employee who work in Department 90)   IN BEGIN END END SECTION;   Execute 3 separate of SELECT  statement one after the other. Each SELECT will pull first_name , salary of each employee and store them in local variables.   SELECT LOAD INTO v_firstname1, v_salary1  WHERE employee_id=100 Then second SELECT first_name, salary INTO v_firstname2, v_salary2     ….. WHERE employee_id=101 Then third SELECT,  SELECT first_name, salary INTO v_firstname3, v_salary3     ….. WHERE employee_id=102   You must now have 6 local variables. DECLARE all of them accordingly in DECLARE section and use them in BEGIN and END.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Develop a PL/SQL block that would go through all the employees from EMPLOYEES table who work in department_id= 90   (there is suppose to be 3 employee who work in Department 90)

 

IN BEGIN END END SECTION;

 

Execute 3 separate of SELECT  statement one after the other. Each SELECT will pull first_name , salary of each employee and store them in local variables.

 

SELECT LOAD INTO v_firstname1, v_salary1  WHERE employee_id=100

Then second

SELECT first_name, salary INTO v_firstname2, v_salary2     ….. WHERE employee_id=101

Then third

SELECT,  SELECT first_name, salary INTO v_firstname3, v_salary3     ….. WHERE employee_id=102

 

You must now have 6 local variables. DECLARE all of them accordingly in DECLARE section and use them in BEGIN and END.

 

Then add another SELECT statement in BEGIN-END to find company average salary

 

SELECT avg(salary) INTO v_avgsal FROM EMPLOYEES;

!!! Do not forget to create v_avgsal local variable in DECLARE section.

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