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Author SHA1 Message Date
Kshitij
b5cd49389b
Added queries for P6 as per p.s., no roll in Stud_Marks table but in Result makes it quite dumb. 2024-11-10 21:52:07 +05:30
Kshitij
3309645905
Removed .obisidian folder from SQL, might be accidentally pushed by Afan. Shoulda taught him .gitignore 🙄 2024-11-10 21:51:32 +05:30
Kshitij
59d480fceb
Fixed problem statement line break. 2024-11-10 21:50:20 +05:30
Kshitij
9318f3069b
Appended block in filename for P1 so it doesn't feel lonely. 2024-11-10 21:50:20 +05:30
7 changed files with 90 additions and 202 deletions
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Practical/Practical Exam/PL-SQL/P1 - PL-SQL.md → Practical/Practical Exam/PL-SQL/P1 - PL-SQL Block.md
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Practical/Practical Exam/PL-SQL/P5 - PL-SQL Block.md
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# P5 - PL-SQL Block # P5 - PL-SQL Block
**Problem Statement:** Write a PL/SQL Block to increase the salary of employees by 10% of existing salary, who are having salary less than **Problem Statement:** Write a PL/SQL Block to increase the salary of employees by 10% of existing salary, who are having salary less than average salary of organization, whenever such salary updates take place, a record for same is maintained in the increment_salary table.
average salary of organization, whenever such salary updates take place, a record for same is maintained in the
increment_salary table.
emp(emp_no, salary) emp(emp_no, salary)
increment_salary(emp_no, salary) increment_salary(emp_no, salary)

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Practical/Practical Exam/PL-SQL/P6 - Stored Procedure.md Normal file
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# P6 - Stored Procedure
**Problem Statement:** Write a Stored Procedure namely proc_Grade for the categorization of student. If marks scored by students in examination is <=1500 and marks>=990 then student will be placed in distinction category if marks scored are between 989 and 900 categories is first class, if marks 899 and 825 category is Higher Second Class. Write a PL/SQL block for using procedure created with above requirement.
Stud_Marks(name, total_marks),
Result (Roll,Name, Class)
---
## Creating tables
```plsql
CREATE TABLE Stud_Marks (
name VARCHAR2(255),
total_marks NUMBER,
PRIMARY KEY (name)
);
CREATE TABLE Result (
Roll NUMBER NOT NULL UNIQUE,
Name VARCHAR2(255),
Class VARCHAR2(255),
FOREIGN KEY (Name) REFERENCES Stud_Marks (name)
);
```
## Inserting values
```plsql
INSERT INTO Stud_Marks VALUES ('Kalas', 1300);
INSERT INTO Stud_Marks VALUES ('Himanshu', 800);
INSERT INTO Stud_Marks VALUES ('Mehul', 950);
INSERT INTO Stud_Marks VALUES ('Gundeti', 875);
```
## Procedure
```plsql
CREATE OR REPLACE PROCEDURE proc_Grade (p_roll IN NUMBER, p_name IN VARCHAR2) IS
-- declare section
marks NUMBER;
nodata EXCEPTION;
BEGIN
IF (p_name IS NULL) THEN
raise nodata;
END IF;
SELECT total_marks INTO marks FROM Stud_Marks WHERE name = p_name;
IF (marks >= 990 AND marks <= 1500) THEN
DBMS_OUTPUT.PUT_LINE(p_name || ' has been placed in the distinction category.');
INSERT INTO Result VALUES (p_roll, p_name, 'DISTINCTION');
ELSIF (marks BETWEEN 900 AND 989) THEN
DBMS_OUTPUT.PUT_LINE(p_name || ' has been placed in the first class category.');
INSERT INTO Result VALUES (p_roll, p_name, 'FIRST CLASS');
ELSIF (marks BETWEEN 825 AND 899) THEN
DBMS_OUTPUT.PUT_LINE(p_name || ' has been placed in the higher second class category.');
INSERT INTO Result VALUES (p_roll, p_name, 'HIGHER SECOND CLASS');
ELSE
DBMS_OUTPUT.PUT_LINE(p_name || ' has failed.');
INSERT INTO Result VALUES (p_roll, p_name, 'FAIL');
END IF;
EXCEPTION
WHEN nodata THEN
DBMS_OUTPUT.PUT_LINE('Please enter a name');
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('Error occurred. Error: ' || SQLERRM);
END proc_Grade;
/
```
## Calling procedure
```plsql
DECLARE
p_roll NUMBER;
p_name VARCHAR2(255);
BEGIN
DBMS_OUTPUT.PUT_LINE('Enter roll number: ');
p_roll := &p_roll;
DBMS_OUTPUT.PUT_LINE('Enter name: ');
p_name := '&p_name';
proc_Grade(p_roll, p_name);
END;
/
```
---

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