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Moved Queries-A5 to Queries-A6 since it's student marks procedure which is Assignment A6. Thanks to Shivani for pointing it out.

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76
Practical/Assignment-A4+A5/Queries-A5.md
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## Creating tables & inserting data
Student marks:
```sql
CREATE TABLE Stud_Marks(
Roll NUMBER(14),
name VARCHAR(255),
total_marks NUMBER(14),
PRIMARY KEY(Roll)
);
INSERT INTO Stud_Marks VALUES (1, 'Arora', 1350);
INSERT INTO Stud_Marks VALUES (2, 'Shankar', 979);
INSERT INTO Stud_Marks VALUES (3, 'Lara', 834);
INSERT INTO Stud_Marks VALUES (4, 'Jambo', 667);
INSERT INTO Stud_Marks VALUES (5, 'Tinde', 1400);
```
Result:
```sql
CREATE TABLE Result(
Roll NUMBER(14),
name VARCHAR(255),
Class VARCHAR(255),
FOREIGN KEY (Roll) REFERENCES Stud_Marks (Roll)
);
```
## Procedure
```sql
CREATE OR REPLACE PROCEDURE proc_grade
(rollno in number,
p_roll_no out Stud_Marks.Roll%type,
p_name out Stud_Marks.name%type,
p_total out Stud_Marks.total_marks%type)
AS
BEGIN
SELECT Roll, name, total_marks into p_roll_no, p_name, p_total from Stud_Marks WHERE Roll = rollno;
IF p_total <= 1500 and p_total >= 990
THEN
INSERT INTO Result VALUES (p_roll_no, p_name, 'Distinction');
ELSE IF p_total <= 989 and p_total >= 900
THEN
INSERT INTO Result VALUES (p_roll_no, p_name, 'First Class');
ELSE IF p_total <= 899 and p_total >= 825
THEN
INSERT INTO Result VALUES (p_roll_no, p_name, 'Higher Second Class');
ELSE
INSERT INTO Result VALUES (p_roll_no, p_name, 'FAIL');
END IF;
END IF;
END IF;
EXCEPTION
WHEN no_data_found THEN
dbms_output.put_line('Rollno ' || rollno || ' is not present!!');
END;
/
```
## Calling Procedure:
```sql
DECLARE
rollno number(14);
p_roll_no Stud_Marks.Roll%type;
p_name Stud_Marks.name%type;
p_total_marks Stud_Marks.total_marks%type;
BEGIN
rollno := &rollno;
proc_grade(rollno, p_roll_no, p_name, p_total_marks);
END;
/
```

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Practical/Assignment-A6/Queries-A6.md Normal file → Executable file
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## Creating tables # Database Queries for Assignment-A6
`O_RollCall` table: ## Creating tables & inserting data
Student marks:
```sql ```sql
CREATE TABLE O_RollCall( CREATE TABLE Stud_Marks(
Roll NUMBER(14),
name VARCHAR(255), name VARCHAR(255),
roll NUMBER(14), total_marks NUMBER(14),
class VARCHAR(255) PRIMARY KEY(Roll)
); );
INSERT INTO Stud_Marks VALUES (1, 'Arora', 1350);
INSERT INTO Stud_Marks VALUES (2, 'Shankar', 979);
INSERT INTO Stud_Marks VALUES (3, 'Lara', 834);
INSERT INTO Stud_Marks VALUES (4, 'Jambo', 667);
INSERT INTO Stud_Marks VALUES (5, 'Tinde', 1400);
``` ```
`N_RollCall` table: Result:
```sql ```sql
CREATE TABLE N_RollCall( CREATE TABLE Result(
Roll NUMBER(14),
name VARCHAR(255), name VARCHAR(255),
roll NUMBER(14), Class VARCHAR(255),
class VARCHAR(255) FOREIGN KEY (Roll) REFERENCES Stud_Marks (Roll)
); );
``` ```
## Inserting data
`O_RollCall` table:
```sql
INSERT INTO O_RollCall VALUES ('Stewie', 1, 'Comp 1');
INSERT INTO O_RollCall VALUES ('Edie', 2, 'Comp 2');
INSERT INTO O_RollCall VALUES ('Stomp', 3, 'Comp 3');
INSERT INTO O_RollCall VALUES ('Lara', 4, 'Comp 1');
INSERT INTO O_RollCall VALUES ('Foxy', 5, 'Comp 2');
```
`N_RollCall` table:
```sql
INSERT INTO N_RollCall VALUES ('Stewie', 1, 'Comp 1');
INSERT INTO N_RollCall VALUES ('Edie', 2, 'Comp 2');
INSERT INTO N_RollCall VALUES ('Stomp', 3, 'Comp 3');
INSERT INTO N_RollCall VALUES ('Lara', 4, 'Comp 1');
INSERT INTO N_RollCall VALUES ('Foxy', 5, 'Comp 2');
INSERT INTO N_RollCall VALUES ('Gundeti', 6, 'Comp 3');
INSERT INTO N_RollCall VALUES ('Kalas', 7, 'Comp 2');
```
## Procedure ## Procedure
### Explicit cursor
```sql ```sql
DECLARE CREATE OR REPLACE PROCEDURE proc_grade
p_name VARCHAR(255); (rollno in number,
p_rollno NUMBER(15); p_roll_no out Stud_Marks.Roll%type,
p_class VARCHAR(255); p_name out Stud_Marks.name%type,
CURSOR cc1 IS SELECT * FROM N_RollCall WHERE roll NOT IN (SELECT roll FROM O_RollCall); p_total out Stud_Marks.total_marks%type)
AS
BEGIN BEGIN
OPEN cc1; SELECT Roll, name, total_marks into p_roll_no, p_name, p_total from Stud_Marks WHERE Roll = rollno;
LOOP IF p_total <= 1500 and p_total >= 990
FETCH cc1 INTO p_name, p_rollno, p_class; THEN
INSERT INTO O_RollCall VALUES (p_name, p_rollno, p_class); INSERT INTO Result VALUES (p_roll_no, p_name, 'Distinction');
EXIT WHEN cc1%notfound; ELSE IF p_total <= 989 and p_total >= 900
DBMS_OUTPUT.PUT_LINE(p_name || ' ' || p_rollno || ' ' || p_class); THEN
END LOOP; INSERT INTO Result VALUES (p_roll_no, p_name, 'First Class');
CLOSE cc1; ELSE IF p_total <= 899 and p_total >= 825
END; THEN
/ INSERT INTO Result VALUES (p_roll_no, p_name, 'Higher Second Class');
ELSE
``` INSERT INTO Result VALUES (p_roll_no, p_name, 'FAIL');
### Parameterized cursor
```sql
DECLARE
p_name VARCHAR(255);
p_rollno NUMBER(15);
p_class VARCHAR(255);
CURSOR pp1(roll1 NUMBER) IS SELECT * FROM N_RollCall WHERE roll > roll1;
BEGIN
OPEN pp1(3);
LOOP
FETCH pp1 INTO p_name, p_rollno, p_class;
EXIT WHEN pp1%notfound;
DBMS_OUTPUT.PUT_LINE(p_name || ' ' || p_rollno || ' ' || p_class);
END LOOP;
CLOSE pp1;
END;
/
```
### Implicit Cursor
```sql
DECLARE
total_rows NUMBER(2);
BEGIN
UPDATE N_RollCall SET roll = roll + 1;
IF sql%notfound THEN
dbms_output.put_line('no roll was updated');
ELSIF sql%found THEN
total_rows := sql%rowcount;
DBMS_OUTPUT.PUT_LINE( total_rows || ' roll calls were affected ');
END IF; END IF;
END IF;
END IF;
EXCEPTION
WHEN no_data_found THEN
dbms_output.put_line('Rollno ' || rollno || ' is not present!!');
END;
/
```
## Calling Procedure:
```sql
DECLARE
rollno number(14);
p_roll_no Stud_Marks.Roll%type;
p_name Stud_Marks.name%type;
p_total_marks Stud_Marks.total_marks%type;
BEGIN
rollno := &rollno;
proc_grade(rollno, p_roll_no, p_name, p_total_marks);
END; END;
/ /