From e975a3de29ce3f1efcf0e7dad86f8b63c56c02a9 Mon Sep 17 00:00:00 2001
From: "github-classroom[bot]"
 <66690702+github-classroom[bot]@users.noreply.github.com>
Date: Wed, 24 May 2023 10:25:00 +0000
Subject: [PATCH 1/7] Setting up GitHub Classroom Feedback


From 055238754ab4a5f89ae06955ea193805e0d72cb7 Mon Sep 17 00:00:00 2001
From: Raha111 <67999013+Raha111@users.noreply.github.com>
Date: Mon, 29 May 2023 04:10:13 +0600
Subject: [PATCH 2/7] Add files via upload

---
 1907111 DB project PMS/ALL.sql    | 423 ++++++++++++++++++++++++++++++
 1907111 DB project PMS/DDL.sql    |  83 ++++++
 1907111 DB project PMS/DML.sql    | 154 +++++++++++
 1907111 DB project PMS/PL-SQL.sql | 183 +++++++++++++
 4 files changed, 843 insertions(+)
 create mode 100644 1907111 DB project PMS/ALL.sql
 create mode 100644 1907111 DB project PMS/DDL.sql
 create mode 100644 1907111 DB project PMS/DML.sql
 create mode 100644 1907111 DB project PMS/PL-SQL.sql

diff --git a/1907111 DB project PMS/ALL.sql b/1907111 DB project PMS/ALL.sql
new file mode 100644
index 0000000..013a1c5
--- /dev/null
+++ b/1907111 DB project PMS/ALL.sql	
@@ -0,0 +1,423 @@
+drop table sale;
+drop table customer;
+drop table pharmacist;
+drop table branch;
+drop table medicine;
+
+set linesize 200;
+set pagesize 100;
+
+create table branch(
+branch_id number(10) not null,
+branch_name varchar(50) not null,
+owner varchar(40) not null,
+city varchar(20),
+primary key(branch_id)
+);
+
+create table Pharmacist(
+p_id number(10) not null,
+name varchar(40) not null,
+position varchar(40),
+contact number(12) not null,
+branch_id number(10) not null,
+primary key(p_id),
+foreign key(branch_id) references branch(branch_id)
+);
+
+create table medicine(
+med_id number(10) not null,
+med_name varchar(40) not null,
+Company varchar(40),
+Type varchar(50),
+Price number(10,2) not null,
+primary key(med_id)
+);
+
+create table customer(
+c_id number(10) not null,
+name varchar(30) not null,
+gender varchar(20),
+Age number(10),
+branch_id number(10) not null,
+primary key(c_id),
+foreign key(branch_id) references branch(branch_id)
+);
+
+create table sale(
+S_id number(10) not null,
+C_id number(10) not null,
+med_id number(10) not null,
+Amount number(10,2) not null,
+"Date" DATE not null,
+primary key (S_id),
+foreign key(c_id) references customer(c_id),
+foreign key(med_id) references medicine(med_id)
+);
+
+desc branch;
+desc pharmacist;
+desc customer;
+desc medicine;
+desc sale;
+
+--add column location to table branch
+
+alter table branch add location varchar(20);
+
+desc branch;
+
+--modify location domain to varchar to number
+
+alter table branch modify location number(10);
+
+desc branch;
+
+--Rename location to street_no
+
+alter table branch rename column location to street_no;
+desc branch;
+
+--drop column street_no
+
+alter table branch drop column street_no;
+desc branch;
+
+--DML
+
+--inserting data
+--branch
+
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (1, 'Uttara', 'mr.X', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (2, 'Shibbari', 'mr.Y', 'Khulna');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (3, 'Lokkhipur', 'mr.W', 'Rajshahi');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (4, 'Shantinagar', 'mr.Z', 'Joypurhat');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (5, 'Dhanmondi', 'Mrs. A', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (6, 'Gulshan', 'Mr. B', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (7, 'Mirpur', 'Mrs. C', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (8, 'Mymensingh', 'Mr. D', 'Mymensingh');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (9, 'Sylhet', 'Mrs. E', 'Sylhet');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (10, 'Chittagong', 'Mr. F', 'Chittagong');
+
+--pharmacist
+
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (1, 'mr.X', 'Owner', '01383479218', 1);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (2, 'rahim', 'distributer', '01523948812', 1);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (3, 'karim', 'helper', '01523982741', 1);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (4, 'mr.z', 'owner', '01717012970', 4);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (5, 'maruf', 'helper', '01712262970', 4);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (6, 'mr.y', 'owner', '01717882970', 2);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (7, 'mr.w', 'owner', '01717025970', 3);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (8, 'ms.A', 'helper', '01712232970', 2);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (9, 'mr.B', 'distributer', '01767898321', 3);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (10, 'ms.C', 'owner', '01888811121', 5);
+
+--medicine
+
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (1, 'Napa', 'Navana', 'Fever', 100);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (2, 'Motigut', 'Navana', 'Gastric', 50);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (3, 'Antacid', 'Square', 'Gastric', 100);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (4, 'Slimfit', 'Beximco', 'PCOS', 200);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (5, 'Paracetamol', 'Square', 'Fever', 80);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (6, 'Omeprazole', 'Beximco', 'Gastric', 120);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (7, 'Amoxicillin', 'Incepta', 'Antibiotic', 150);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (8, 'Loratadine', 'Square', 'Allergy', 90);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (9, 'Aspirin', 'ACME', 'Pain Relief', 70);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (10, 'Ibuprofen', 'ACME', 'Pain Relief', 200);
+
+--customer
+
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (1, 'Raha', 'Female', 23, 4);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (2, 'Ridi', 'Female', 22, 2);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (3, 'Rafi', 'Male', 33, 4);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (4, 'Rahi', 'Male', 43, 3);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (5, 'Farhan', 'Male', 28, 1);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (6, 'Nadia', 'Female', 35, 3);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (7, 'Sadia', 'Female', 27, 1);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (8, 'Sakib', 'Male', 31, 2);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (9, 'Tahmid', 'Male', 24, 4);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (10, 'Riya', 'Female', 29, 3);
+
+--sales
+
+INSERT INTO sale VALUES (1, 1, 1, 100, TO_DATE('01-01-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (2, 1, 3, 100, TO_DATE('01-04-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (3, 4, 1, 100, TO_DATE('04-01-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (5, 2, 4, 200, TO_DATE('01-11-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (6, 3, 2, 50, TO_DATE('15-02-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (7, 5, 5, 80, TO_DATE('20-03-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (8, 1, 6, 120, TO_DATE('10-02-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (9, 2, 1, 100, TO_DATE('05-03-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (10, 4, 3, 100, TO_DATE('25-01-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (11, 1, 2, 50, TO_DATE('12-04-2023', 'DD-MM-YYYY'));
+
+--show tables
+
+select * from branch;
+select * from pharmacist;
+select * from medicine;
+select * from customer;
+select * from sale;
+
+select * from sale where amount = 100;
+
+select name,contact,branch_id from pharmacist where position='owner';
+
+-- nested query: get branch name for sale no = 7
+
+select branch_name from branch where branch_id = (
+	select branch_id from customer where c_id = (
+		select c_id from sale where s_id = 7 ));
+
+--update 
+
+update branch set owner='Jewel' where branch_id=4;
+update pharmacist set name='Jewel' where branch_id=4 and position='owner';
+
+--delete
+
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (11, 'Raya', 'Female', 19, 5);
+delete from customer where c_id=11;
+
+--union, intersect and except
+
+select branch_name from branch where branch_name like '%s%' union select branch_name from branch where branch_name like '%l%';
+
+select branch_name from branch where branch_name like '%s%' intersect select branch_name from branch where branch_name like '%l%';
+
+select branch_name from branch where branch_name like '%s%' except select branch_name from branch where branch_name like '%l%';
+
+--with clause
+
+with max_price(val) as (select max(price) from medicine) select * from medicine,max_price where medicine.price = max_price.val;
+
+--Aggregate Function
+
+select count(*) from branch;
+
+select count(branch_name) as total_no_of_branches from branch;
+
+select count(distinct branch_name) as total_no_of_branches from branch;
+
+select avg(price) from medicine;
+
+select sum(amount) from sale;
+
+select max(age) from customer;
+
+select min(age) from customer;
+
+--Group by and Having
+
+select c_id,sum(amount) from sale group by c_id;
+
+select c_id,sum(amount) from sale group by c_id having sum(amount)>100;
+
+
+--and, or ,not
+
+select * from branch where branch_name like '%a%' and branch_id in (select branch_id from customer where gender='Male');
+
+--some/all/exists
+
+select * from customer where age> some( select age from customer where age > 30 );
+select * from customer where age> all( select age from customer where age < 30 );
+select * from customer where age>20 and exists(select * from branch where owner like 'm%');
+
+--join
+
+select * from branch natural join pharmacist where branch_id=1;
+
+select * from branch natural join pharmacist;
+
+select branch_name,city,name,position,contact from branch join pharmacist on branch.branch_id = pharmacist.branch_id;
+
+select branch_name,name from branch left outer join pharmacist using(branch_id);
+select branch_name,name from branch right outer join pharmacist using(branch_id);
+select branch_name,name from branch full outer join pharmacist using(branch_id);
+
+
+
+-- PL-SQL
+
+-- variable declaration and print, getting info of branch_number = 5
+
+set serveroutput on
+declare
+  branch_name branch.branch_name%type;
+  owner branch.owner%type;
+  city branch.city%type;
+begin
+  select branch_name, owner, city into branch_name, owner, city from branch where branch_id = 5;
+  dbms_output.put_line('Branch Name: ' || branch_name || ' Owner: ' || owner || ' City: ' || city);
+end;
+/
+
+-- Insert
+
+set serveroutput on
+declare
+  branch_id branch.branch_id%type := 11;
+  branch_name branch.branch_name%type := 'Shantinagar';
+  owner branch.owner%type := 'Raisa';
+  city branch.city%type := 'Dhaka';
+begin
+  insert into branch values(branch_id, branch_name, owner, city);
+end;
+/
+
+select * from branch;
+
+-- Row Type
+
+set serveroutput on
+declare
+  branch_row branch%rowtype;
+begin
+  select branch_name, owner, city into branch_row.branch_name, branch_row.owner, branch_row.city from branch where branch_id = 7;
+  dbms_output.put_line('Branch Name: ' || branch_row.branch_name || ' Owner: ' || branch_row.owner || ' City: ' || branch_row.city);
+end;
+/
+
+
+-- cursor
+set serveroutput on
+declare
+  cursor c is select * from customer;
+  c_row customer%rowtype;
+begin
+  open c;
+  fetch c into c_row.c_id, c_row.name, c_row.gender, c_row.age, c_row.branch_id;
+  while c%found loop
+    dbms_output.put_line('Customer ID: ' || c_row.c_id || ' Name: ' || c_row.name || ' Gender: ' || c_row.gender);
+    dbms_output.put_line('Row Count: ' || c%rowcount);
+    fetch c into c_row.c_id, c_row.name, c_row.gender, c_row.age, c_row.branch_id;
+  end loop;
+  close c;
+end;
+/
+
+-- For loop with extend() function
+
+set serveroutput on
+declare
+  counter number;
+  med_name medicine.med_name%type;
+  TYPE ARR IS VARRAY(10) OF medicine.med_name%type;
+  M_NAME ARR := ARR();
+begin
+  counter := 1;
+  for x in 1..10 loop
+    select med_name into med_name from medicine where med_id = x;
+    M_NAME.EXTEND();
+    M_NAME(counter) := med_name;
+    counter := counter + 1;
+  end loop;
+  counter := 1;
+  WHILE counter <= M_NAME.COUNT LOOP
+    DBMS_OUTPUT.PUT_LINE(M_NAME(counter));
+    counter := counter + 1;
+  END LOOP;
+end;
+/
+
+
+-- with extend()
+
+set serveroutput on
+declare
+  counter number := 1;
+  med_name medicine.med_name%type;
+  TYPE ARR IS VARRAY(3) OF medicine.med_name%type;
+  M_NAME ARR := ARR('Med 1', 'Med 2', 'Med 3');
+begin
+  counter := 1;
+  for x in 1..3 loop
+    select med_name into med_name from medicine where med_id = x;
+    M_NAME(counter) := med_name;
+    counter := counter + 1;
+  end loop;
+  counter := 1;
+  WHILE counter <= M_NAME.COUNT LOOP
+    DBMS_OUTPUT.PUT_LINE(M_NAME(counter));
+    counter := counter + 1;
+ End loop;
+end;
+/
+
+
+
+--IF/ELSEIF/ELSE
+declare
+ counter Number:=1;
+ med_name medicine.med_name%type;
+ TYPE ARR IS VARRAY(3) OF medicine.med_name%type;
+ M_NAME ARR:=ARR('Med 1','Med 2','Med 3');
+begin
+ counter:=1;
+ for x in 1..3
+ loop
+	select med_name into med_name from medicine where med_id = x;
+	if med_name = 'Napa'
+	  then
+	  dbms_output.put_line(med_name||' is for fever');
+	elsif med_name = 'Motigut'
+	  then
+	  dbms_output.put_line(med_name||' is for gastric');
+	else
+        dbms_output.put_line(med_name||' is for other purpose');
+        end if;
+  end loop;
+end;
+/
+
+
+-- procedure
+
+create or replace procedure proc(
+  var1 IN number,
+  var2 OUT varchar
+)
+as
+begin
+  select name into var2 from pharmacist where p_id = var1;
+  dbms_output.put_line('Pharmacist''s name: ' || var2 || ' Pharmacist ID: ' || var1);
+end;
+/
+
+
+set serveroutput on;
+declare
+  p_id pharmacist.p_id%type := 5;
+  name pharmacist.name%type;
+begin
+  proc(p_id, name);
+end;
+/
+
+
+-- function
+
+set serveroutput on
+create or replace function func(var1 in varchar) return varchar AS
+  name pharmacist.name%type;
+begin
+  select name into name from pharmacist where p_id = var1;
+  return name;
+end;
+/
+
+set serveroutput on
+declare
+  name varchar(30);
+begin
+  name := func(4);
+  dbms_output.put_line('name is: ' || name);
+end;
+/
+
+
+drop procedure proc;
+drop function func;
+
+
diff --git a/1907111 DB project PMS/DDL.sql b/1907111 DB project PMS/DDL.sql
new file mode 100644
index 0000000..773ad4c
--- /dev/null
+++ b/1907111 DB project PMS/DDL.sql	
@@ -0,0 +1,83 @@
+drop table sale;
+drop table customer;
+drop table pharmacist;
+drop table branch;
+drop table medicine;
+
+set linesize 200;
+set pagesize 100;
+
+create table branch(
+branch_id number(10) not null,
+branch_name varchar(50) not null,
+owner varchar(40) not null,
+city varchar(20),
+primary key(branch_id)
+);
+
+create table Pharmacist(
+p_id number(10) not null,
+name varchar(40) not null,
+position varchar(40),
+contact number(11) not null,
+branch_id number(10) not null,
+primary key(p_id),
+foreign key(branch_id) references branch(branch_id)
+);
+
+create table medicine(
+med_id number(10) not null,
+med_name varchar(40) not null,
+Company varchar(40),
+Type varchar(50),
+Price number(10,2) not null,
+primary key(med_id)
+);
+
+create table customer(
+c_id number(10) not null,
+name varchar(30) not null,
+gender varchar(20),
+Age number(10),
+branch_id number(10) not null,
+primary key(c_id),
+foreign key(branch_id) references branch(branch_id)
+);
+
+create table sale(
+S_id number(10) not null,
+C_id number(10) not null,
+med_id number(10) not null,
+Amount number(10,2) not null,
+"Date" DATE not null,
+primary key (S_id),
+foreign key(c_id) references customer(c_id),
+foreign key(med_id) references medicine(med_id)
+);
+
+desc branch;
+desc pharmacist;
+desc customer;
+desc medicine;
+desc sale;
+
+--add column location to table branch
+
+alter table branch add location varchar(20);
+desc branch;
+
+--modify location domain to varchar to number
+
+alter table branch modify location number(10);
+desc branch;
+
+--Rename location to street_no
+
+alter table branch rename column location to street_no;
+desc branch;
+
+--drop column street_no
+
+alter table branch drop column street_no;
+desc branch;
+
diff --git a/1907111 DB project PMS/DML.sql b/1907111 DB project PMS/DML.sql
new file mode 100644
index 0000000..4c433aa
--- /dev/null
+++ b/1907111 DB project PMS/DML.sql	
@@ -0,0 +1,154 @@
+--DML
+
+--inserting data
+--branch
+
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (1, 'Uttara', 'mr.X', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (2, 'Shibbari', 'mr.Y', 'Khulna');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (3, 'Lokkhipur', 'mr.W', 'Rajshahi');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (4, 'Shantinagar', 'mr.Z', 'Joypurhat');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (5, 'Dhanmondi', 'Mrs. A', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (6, 'Gulshan', 'Mr. B', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (7, 'Mirpur', 'Mrs. C', 'Dhaka');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (8, 'Mymensingh', 'Mr. D', 'Mymensingh');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (9, 'Sylhet', 'Mrs. E', 'Sylhet');
+INSERT INTO branch (branch_id, branch_name, owner, city) VALUES (10, 'Chittagong', 'Mr. F', 'Chittagong');
+
+--pharmacist
+
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (1, 'mr.X', 'Owner', '01383479218', 1);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (2, 'rahim', 'distributer', '01523948812', 1);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (3, 'karim', 'helper', '01523982741', 1);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (4, 'mr.z', 'owner', '01717012970', 4);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (5, 'maruf', 'helper', '01712262970', 4);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (6, 'mr.y', 'owner', '01717882970', 2);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (7, 'mr.w', 'owner', '01717025970', 3);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (8, 'ms.A', 'helper', '01712232970', 2);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (9, 'mr.B', 'distributer', '01767898321', 3);
+INSERT INTO pharmacist (p_id, name, position, contact, branch_id) VALUES (10, 'ms.C', 'owner', '01888811121', 5);
+
+--medicine
+
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (1, 'Napa', 'Navana', 'Fever', 100);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (2, 'Motigut', 'Navana', 'Gastric', 50);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (3, 'Antacid', 'Square', 'Gastric', 100);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (4, 'Slimfit', 'Beximco', 'PCOS', 200);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (5, 'Paracetamol', 'Square', 'Fever', 80);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (6, 'Omeprazole', 'Beximco', 'Gastric', 120);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (7, 'Amoxicillin', 'Incepta', 'Antibiotic', 150);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (8, 'Loratadine', 'Square', 'Allergy', 90);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (9, 'Aspirin', 'ACME', 'Pain Relief', 70);
+INSERT INTO medicine (med_id, med_name, company, type, price) VALUES (10, 'Ibuprofen', 'ACME', 'Pain Relief', 200);
+
+--customer
+
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (1, 'Raha', 'Female', 23, 4);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (2, 'Ridi', 'Female', 22, 2);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (3, 'Rafi', 'Male', 33, 4);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (4, 'Rahi', 'Male', 43, 3);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (5, 'Farhan', 'Male', 28, 1);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (6, 'Nadia', 'Female', 35, 3);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (7, 'Sadia', 'Female', 27, 1);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (8, 'Sakib', 'Male', 31, 2);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (9, 'Tahmid', 'Male', 24, 4);
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (10, 'Riya', 'Female', 29, 3);
+
+--sales
+
+INSERT INTO sale VALUES (1, 1, 1, 100, TO_DATE('01-01-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (2, 1, 3, 100, TO_DATE('01-04-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (3, 4, 1, 100, TO_DATE('04-01-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (5, 2, 4, 200, TO_DATE('01-11-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (6, 3, 2, 50, TO_DATE('15-02-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (7, 5, 5, 80, TO_DATE('20-03-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (8, 1, 6, 120, TO_DATE('10-02-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (9, 2, 1, 100, TO_DATE('05-03-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (10, 4, 3, 100, TO_DATE('25-01-2023', 'DD-MM-YYYY'));
+INSERT INTO sale VALUES (11, 1, 2, 50, TO_DATE('12-04-2023', 'DD-MM-YYYY'));
+
+--show tables
+
+select * from branch;
+select * from pharmacist;
+select * from medicine;
+select * from customer;
+select * from sale;
+
+select * from sale where amount = 100;
+
+select name,contact,branch_id from pharmacist where position='owner';
+
+-- nested query: get branch name for sale no = 7
+
+select branch_name from branch where branch_id = (
+	select branch_id from customer where c_id = (
+		select c_id from sale where s_id = 7 ));
+
+--update 
+
+update branch set owner='Jewel' where branch_id=4;
+
+--delete
+
+INSERT INTO customer (c_id, name, gender, age, branch_id) VALUES (11, 'Raya', 'Female', 19, 5);
+delete from customer where c_id=11;
+
+--union, intersect and except
+
+select branch_name from branch where branch_name like '%s%' union select branch_name from branch where branch_name like '%l%';
+
+select branch_name from branch where branch_name like '%s%' intersect select branch_name from branch where branch_name like '%l%';
+
+select branch_name from branch where branch_name like '%s%' except select branch_name from branch where branch_name like '%l%';
+
+--with clause
+
+with max_price(val) as (select max(price) from medicine) select * from medicine,max_price where medicine.price = max_price.val;
+
+--Aggregate Function
+
+select count(*) from branch;
+
+select count(branch_name) as total_no_of_branches from branch;
+
+select count(distinct branch_name) as total_no_of_branches from branch;
+
+select avg(price) from medicine;
+
+select sum(amount) from sale;
+
+select max(age) from customer;
+
+select min(age) from customer;
+
+--Group by and Having
+
+select c_id,sum(amount) from sale group by c_id;
+
+select c_id,sum(amount) from sale group by c_id having sum(amount)>100;
+
+
+--and, or ,not
+
+select * from branch where branch_name like '%a%' and branch_id in (select branch_id from customer where gender='Male');
+
+--some/all/exists
+
+select * from customer where age> some( select age from customer where age > 30 );
+select * from customer where age> all( select age from customer where age < 30 );
+select * from customer where age>20 and exists(select * from branch where owner like 'm%');
+
+--join
+
+select * from branch natural join pharmacist where branch_id=1;
+
+select * from branch natural join pharmacist;
+
+select branch_name,city,name,position,contact from branch join pharmacist on branch.branch_id = pharmacist.branch_id;
+
+select branch_name,name from branch left outer join pharmacist using(branch_id);
+select branch_name,name from branch right outer join pharmacist using(branch_id);
+select branch_name,name from branch full outer join pharmacist using(branch_id);
+
+
+
diff --git a/1907111 DB project PMS/PL-SQL.sql b/1907111 DB project PMS/PL-SQL.sql
new file mode 100644
index 0000000..8c075ea
--- /dev/null
+++ b/1907111 DB project PMS/PL-SQL.sql	
@@ -0,0 +1,183 @@
+-- PL-SQL
+
+-- variable declaration and print, getting info of branch_number = 5
+
+set serveroutput on
+declare
+  branch_name branch.branch_name%type;
+  owner branch.owner%type;
+  city branch.city%type;
+begin
+  select branch_name, owner, city into branch_name, owner, city from branch where branch_id = 5;
+  dbms_output.put_line('Branch Name: ' || branch_name || ' Owner: ' || owner || ' City: ' || city);
+end;
+/
+
+-- Insert
+
+set serveroutput on
+declare
+  branch_id branch.branch_id%type := 11;
+  branch_name branch.branch_name%type := 'Shantinagar';
+  owner branch.owner%type := 'Raisa';
+  city branch.city%type := 'Dhaka';
+begin
+  insert into branch values(branch_id, branch_name, owner, city);
+end;
+/
+
+select * from branch;
+
+-- Row Type
+
+set serveroutput on
+declare
+  branch_row branch%rowtype;
+begin
+  select branch_name, owner, city into branch_row.branch_name, branch_row.owner, branch_row.city from branch where branch_id = 7;
+  dbms_output.put_line('Branch Name: ' || branch_row.branch_name || ' Owner: ' || branch_row.owner || ' City: ' || branch_row.city);
+end;
+/
+
+
+-- cursor
+set serveroutput on
+declare
+  cursor c is select * from customer;
+  c_row customer%rowtype;
+begin
+  open c;
+  fetch c into c_row.c_id, c_row.name, c_row.gender, c_row.age, c_row.branch_id;
+  while c%found loop
+    dbms_output.put_line('Customer ID: ' || c_row.c_id || ' Name: ' || c_row.name || ' Gender: ' || c_row.gender);
+    dbms_output.put_line('Row Count: ' || c%rowcount);
+    fetch c into c_row.c_id, c_row.name, c_row.gender, c_row.age, c_row.branch_id;
+  end loop;
+  close c;
+end;
+/
+
+-- For loop with extend() function
+
+set serveroutput on
+declare
+  counter number;
+  med_name medicine.med_name%type;
+  TYPE ARR IS VARRAY(10) OF medicine.med_name%type;
+  M_NAME ARR := ARR();
+begin
+  counter := 1;
+  for x in 1..10 loop
+    select med_name into med_name from medicine where med_id = x;
+    M_NAME.EXTEND();
+    M_NAME(counter) := med_name;
+    counter := counter + 1;
+  end loop;
+  counter := 1;
+  WHILE counter <= M_NAME.COUNT LOOP
+    DBMS_OUTPUT.PUT_LINE(M_NAME(counter));
+    counter := counter + 1;
+  END LOOP;
+end;
+/
+
+
+-- with extend()
+
+set serveroutput on
+declare
+  counter number := 1;
+  med_name medicine.med_name%type;
+  TYPE ARR IS VARRAY(3) OF medicine.med_name%type;
+  M_NAME ARR := ARR('Med 1', 'Med 2', 'Med 3');
+begin
+  counter := 1;
+  for x in 1..3 loop
+    select med_name into med_name from medicine where med_id = x;
+    M_NAME(counter) := med_name;
+    counter := counter + 1;
+  end loop;
+  counter := 1;
+  WHILE counter <= M_NAME.COUNT LOOP
+    DBMS_OUTPUT.PUT_LINE(M_NAME(counter));
+    counter := counter + 1;
+ End loop;
+end;
+/
+
+
+
+--IF/ELSEIF/ELSE
+declare
+ counter Number:=1;
+ med_name medicine.med_name%type;
+ TYPE ARR IS VARRAY(3) OF medicine.med_name%type;
+ M_NAME ARR:=ARR('Med 1','Med 2','Med 3');
+begin
+ counter:=1;
+ for x in 1..3
+ loop
+	select med_name into med_name from medicine where med_id = x;
+	if med_name = 'Napa'
+	  then
+	  dbms_output.put_line(med_name||' is for fever');
+	elsif med_name = 'Motigut'
+	  then
+	  dbms_output.put_line(med_name||' is for gastric');
+	else
+        dbms_output.put_line(med_name||' is for other purpose');
+        end if;
+  end loop;
+end;
+/
+
+
+-- procedure
+
+create or replace procedure proc(
+  var1 IN number,
+  var2 OUT varchar
+)
+as
+begin
+  select name into var2 from pharmacist where p_id = var1;
+  dbms_output.put_line('Pharmacist''s name: ' || var2 || ' Pharmacist ID: ' || var1);
+end;
+/
+
+
+set serveroutput on;
+declare
+  p_id pharmacist.p_id%type := 5;
+  name pharmacist.name%type;
+begin
+  proc(p_id, name);
+end;
+/
+
+
+-- function
+
+set serveroutput on
+create or replace function func(var1 in varchar) return varchar AS
+  name pharmacist.name%type;
+begin
+  select name into name from pharmacist where p_id = var1;
+  return name;
+end;
+/
+
+set serveroutput on
+declare
+  name varchar(30);
+begin
+  name := func(4);
+  dbms_output.put_line('name is: ' || name);
+end;
+/
+
+
+drop procedure proc;
+drop function func;
+
+

From 052092bd8d1b30e1e976be15305c77705d1b0715 Mon Sep 17 00:00:00 2001
From: Raha111 <67999013+Raha111@users.noreply.github.com>
Date: Mon, 29 May 2023 04:11:05 +0600
Subject: [PATCH 3/7] Create README.md

---
 README.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 README.md

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..9cf773c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,20 @@
+
+# Pharmacy Management System Database Project
+This database project consists of multiple SQL statements and queries that create tables, insert data, perform modifications, and execute various queries on the database. The project focuses on managing a pharmacy's branch, pharmacists, medicines, customers, and sales.
+
+
+## Project Structure
+The project consists of the following tables:
+
+- branch: Represents information about different branches of the pharmacy.
+- pharmacist: Contains details about pharmacists working at different branches.
+- medicine: Stores information about the available medicines, including their name, company, type, and price.
+- customer: Holds data related to customers, including their name, gender, age, and the branch they are associated with.
+- sale: Records the details of sales transactions, such as the customer, medicine, amount, and date.
+
+
+##  About Me
+- Name: MST. Rubaiya Raktin Raha
+- Roll: 1907111
+
+

From 63a6f37a5ec21ef9e61d0cde25d0002714fd7368 Mon Sep 17 00:00:00 2001
From: Raha111 <67999013+Raha111@users.noreply.github.com>
Date: Sat, 10 Jun 2023 01:48:03 +0600
Subject: [PATCH 4/7] Add files via upload

---
 1907111 DB project PMS/Extra Queries.sql | 324 +++++++++++++++++++++++
 1 file changed, 324 insertions(+)
 create mode 100644 1907111 DB project PMS/Extra Queries.sql

diff --git a/1907111 DB project PMS/Extra Queries.sql b/1907111 DB project PMS/Extra Queries.sql
new file mode 100644
index 0000000..b8fe53f
--- /dev/null
+++ b/1907111 DB project PMS/Extra Queries.sql	
@@ -0,0 +1,324 @@
+--Retrieve the details of all sales along with the customer and medicine information
+
+select s.s_id, c.name as customer_name,m.med_name,s.amount,s."Date"
+from sale s
+join customer c on s.c_id = c.c_id
+join medicine m on s.med_id = m.med_id;
+
+
+
+--Retrieve the details of pharmacists along with their corresponding branch details:
+
+select p.name as pharmacist_name, p.position, p.contact, b.branch_name, b.city
+from pharmacist p
+join branch b using(branch_id);
+
+
+
+--Retrieve the sales made by customers of a specific branch:
+
+select s.s_id, c.name as customer_name, m.med_name, s.amount, s."Date" from sale s 
+join customer c using(c_id)
+join medicine m using(med_id)
+where c.branch_id = 4;
+
+
+
+--To retrieve the customers for each branch individually
+
+select b.branch_name, c.c_id, c.name AS customer_name, c.gender, c.age
+FROM customer c
+JOIN branch b ON c.branch_id = b.branch_id
+ORDER BY b.branch_id, c.c_id;
+
+--or
+
+select b.branch_name, listagg(c.name, ', ') within group (order by c.name) as customers
+FROM customer c
+JOIN branch b ON c.branch_id = b.branch_id
+GROUP BY b.branch_id, b.branch_name;
+
+
+
+--Retrieve the names of customers who have made a purchase of a medicine with a price higher than the average price:
+
+select c.name as customer_name from customer c where c.c_id in ( select s.c_id from sale s where s.amount> (select avg(price) from medicine));
+
+
+
+--Retrieve the branch names and the total number of sales made in each branch
+
+select branch_name, (select count(*) from sale s join customer c on s.c_id = c.c_id
+where c.branch_id = b.branch_id) as total_sales from branch b;
+
+--it will show all
+--later will show only the ones that participated
+
+select b.branch_name, count(*) as sales_count from sale s 
+join customer c on c.c_id = s.c_id
+join branch b on b.branch_id = c.branch_id 
+group by b.branch_name;
+
+
+
+--Retrieve the total amount of sales in respective branches;
+
+select b.branch_name, ( select sum(amount) from sale s join customer c on c.c_id = s.c_id 
+where c.branch_id = b.branch_id) as total_amount from branch b;
+
+--or
+
+select b.branch_name, sum(amount) as total_amount
+from sale s
+join customer c using(c_id)
+join branch b using(branch_id)
+group by b.branch_name;
+
+
+
+--Retrieve the customer names and the total amount spent by each customer on medicine purchases:
+
+select c.name, ( select sum(amount) from sale s where s.c_id = c.c_id) as total_purchase from customer c;
+
+select c.name, sum(amount) as total_purchase
+from sale s
+join customer c on c.c_id = s.c_id
+group by c.name; 
+
+
+
+--Retrieves all customers who belong to branches located in Dhaka
+
+select * from customer c where branch_id in (select branch_id from branch where city='Dhaka');
+
+
+
+--Retrieves all male customers who are at least 30 years old.
+
+select * from customer where gender='Male' and age>=30;
+
+
+
+-- Retrieves the names of customers from Branch 1 and Branch 2
+
+ select * from customer where branch_id = 1 union select * from customer where branch_id = 2;
+
+--or
+SELECT *
+FROM customer
+WHERE branch_id = 1 OR branch_id = 2;
+
+--or
+SELECT *
+FROM customer
+WHERE branch_id in(1,2);
+
+
+--Retrieve the branch names along with the total sales amount and the average sales amount for each branch:
+
+select b.branch_name, sum(s.amount) as total_sales, avg(s.amount) as average_sale from branch b join customer c using(branch_id) join sale s using(c_id) group by b.branch_name;
+
+
+
+--Retrieves the names of customers from Branch 1, excluding those who are female.
+
+select * from customer where branch_id = 1 except select * from customer where gender = 'Female';
+
+select * from customer where branch_id = 1 and gender = 'Male';
+
+
+
+--Retrieves all customers who have made sales.
+
+select * from customer c where exists( select * from sale s where s.c_id = c.c_id);
+
+
+--Retrieves all customers who have not made any sales.
+
+select * from customer c where not exists( select * from sale s where s.c_id = c.c_id);
+
+
+--Retrieve all the customer name who bought the medicine napa
+
+select c.name from customer c where c_id in (select c_id from sale join medicine using(med_id) where med_name = 'Napa');
+
+select name from customer where c_id in (select c_id from sale where med_id = (select med_id from medicine where med_name = 'Napa'));
+
+
+--find the sales happened between two dates
+
+select s.s_id,c.name as customer_name, m.med_name, s.amount, s."Date"
+from sale s
+join customer c using(c_id)
+join medicine m using(med_id)
+where s."Date" between to_date('2023-01-01','YYYY-MM-DD') and to_date('2023-03-31','YYYY-MM-DD');
+
+
+
+-- retrieve the names of customers who made a purchase between specified dates
+
+select c.name from customer c where c.c_id in (
+  select s.c_id from sale s 
+    where s."Date" between to_date('2023-01-01','YYYY-MM-DD') and to_date('2023-03-31','YYYY-MM-DD'));
+
+
+--
+--PL_SQL
+--
+
+
+-- PL/SQL procedure to calculate the total sales amount for each branch
+
+CREATE OR REPLACE PROCEDURE calculate_total_sale AS
+   total_sales NUMBER;
+BEGIN
+   FOR branch_rec IN (SELECT DISTINCT b.branch_id, b.branch_name FROM branch b)
+   LOOP
+      total_sales := 0;
+      FOR sale_rec IN (SELECT s.amount FROM sale s JOIN customer c ON s.c_id = c.c_id WHERE c.branch_id = branch_rec.branch_id)
+      LOOP
+         total_sales := total_sales + sale_rec.amount;
+      END LOOP;
+      DBMS_OUTPUT.PUT_LINE('Total sales for ' || branch_rec.branch_name || ': ' || total_sales);
+   END LOOP;
+END;
+/
+
+SET SERVEROUTPUT ON
+BEGIN
+   calculate_total_sale();
+END;
+/
+
+
+
+-- Retrieve all the customer names who bought the medicine "Napa"
+
+SET SERVEROUTPUT ON
+DECLARE
+   CURSOR cr IS 
+      SELECT c.name FROM customer c
+      JOIN sale s USING (c_id)
+      JOIN medicine m USING (med_id)
+      WHERE m.med_name = 'Napa';
+   customer_name cr%ROWTYPE;
+BEGIN
+   OPEN cr;
+   LOOP
+      FETCH cr INTO customer_name;
+      EXIT WHEN cr%NOTFOUND;
+      DBMS_OUTPUT.PUT_LINE('Customer name: ' || customer_name.name);
+   END LOOP;
+   CLOSE cr;
+END;
+/
+
+-- Retrieve all the customer names who bought the given medicine
+
+CREATE OR REPLACE PROCEDURE get_customer_name(med_name IN medicine.med_name%TYPE) AS
+   CURSOR cr IS
+      SELECT DISTINCT c.name FROM customer c
+      JOIN sale s USING (c_id)
+      JOIN medicine m USING (med_id)
+      WHERE m.med_name = med_name;
+
+   customer_name customer.name%TYPE;
+BEGIN
+   OPEN cr;
+   LOOP
+      FETCH cr INTO customer_name;
+      EXIT WHEN cr%NOTFOUND;
+      DBMS_OUTPUT.PUT_LINE('Customer name: ' || customer_name);
+   END LOOP;
+   CLOSE cr;
+END;
+/
+
+SET SERVEROUTPUT ON
+DECLARE
+   med medicine.med_name%TYPE;
+BEGIN
+   med := 'Napa';
+   get_customer_name(med);
+END;
+/
+
+-- PL/SQL function to retrieve the count of customers in a specific branch
+
+CREATE OR REPLACE FUNCTION count_customer(b_name IN branch.branch_name%TYPE) RETURN NUMBER AS
+   customer_count NUMBER;
+BEGIN
+   SELECT COUNT(*) INTO customer_count FROM customer c JOIN branch b USING (branch_id) WHERE b.branch_name = b_name;
+   RETURN customer_count;
+END;
+/
+
+SET SERVEROUTPUT ON
+DECLARE
+   customer_count NUMBER;
+BEGIN 
+   customer_count := count_customer('Uttara');
+   DBMS_OUTPUT.PUT_LINE('Total customer: ' || customer_count);
+END;
+/
+
+-- PL/SQL loop to display the names of customers along with their branch names
+
+SET SERVEROUTPUT ON
+DECLARE
+   customer_name customer.name%TYPE;
+   branch_name branch.branch_name%TYPE;
+BEGIN
+   FOR cr IN (SELECT c.name, b.branch_name FROM customer c JOIN branch b USING (branch_id))
+   LOOP
+      customer_name := cr.name;
+      branch_name := cr.branch_name;
+      DBMS_OUTPUT.PUT_LINE('Customer: ' || customer_name || '  Branch: ' || branch_name);
+   END LOOP;
+END;
+/
+
+-- PL/SQL cursor to retrieve the details of pharmacists in a specific branch
+
+SET SERVEROUTPUT ON
+DECLARE
+   CURSOR c IS 
+      SELECT p.name, p.position, p.contact, b.branch_name
+      FROM pharmacist p
+      JOIN branch b USING (branch_id)
+      WHERE b.branch_name = 'Uttara';
+   p_rec c%ROWTYPE;
+BEGIN
+   OPEN c;
+   LOOP 
+      FETCH c INTO p_rec;
+      EXIT WHEN c%NOTFOUND;
+      DBMS_OUTPUT.PUT_LINE('Pharmacist Name: ' || p_rec.name || ' Position: ' || p_rec.position || ' Contact: ' || p_rec.contact || ' Branch_name: ' || p_rec.branch_name);
+   END LOOP;
+   CLOSE c;
+END;
+/
+
+-- Retrieve the names of customers who made a purchase between specified dates
+
+DECLARE
+   v_customer_name customer.name%TYPE;
+   v_sale_date sale."Date"%TYPE;
+BEGIN
+   FOR sale_rec IN (SELECT c.name, s."Date"
+                    FROM sale s
+                    JOIN customer c ON s.c_id = c.c_id
+                    WHERE s."Date" BETWEEN TO_DATE('2023-01-01', 'YYYY-MM-DD') AND TO_DATE('2023-03-31', 'YYYY-MM-DD'))
+   LOOP
+      v_customer_name := sale_rec.name;
+      v_sale_date := sale_rec."Date";
+      
+      DBMS_OUTPUT.PUT_LINE('Customer Name: ' || v_customer_name || ', Sale Date: ' || v_sale_date);
+   END LOOP;
+END;
+/
+
+
+
+
+

From c1db712bbfff2d0d3bfc39b7390cceeda8173e8f Mon Sep 17 00:00:00 2001
From: Raha111 <67999013+Raha111@users.noreply.github.com>
Date: Sat, 10 Jun 2023 01:57:17 +0600
Subject: [PATCH 5/7] ALL.sql

Added some new queries
---
 1907111 DB project PMS/ALL.sql | 321 +++++++++++++++++++++++++++++++++
 1 file changed, 321 insertions(+)

diff --git a/1907111 DB project PMS/ALL.sql b/1907111 DB project PMS/ALL.sql
index 013a1c5..2b6c497 100644
--- a/1907111 DB project PMS/ALL.sql	
+++ b/1907111 DB project PMS/ALL.sql	
@@ -420,4 +420,325 @@ end;
 drop procedure proc;
 drop function func;
 
+--Retrieve the details of all sales along with the customer and medicine information
+
+select s.s_id, c.name as customer_name,m.med_name,s.amount,s."Date"
+from sale s
+join customer c on s.c_id = c.c_id
+join medicine m on s.med_id = m.med_id;
+
+
+
+--Retrieve the details of pharmacists along with their corresponding branch details:
+
+select p.name as pharmacist_name, p.position, p.contact, b.branch_name, b.city
+from pharmacist p
+join branch b using(branch_id);
+
+
+
+--Retrieve the sales made by customers of a specific branch:
+
+select s.s_id, c.name as customer_name, m.med_name, s.amount, s."Date" from sale s 
+join customer c using(c_id)
+join medicine m using(med_id)
+where c.branch_id = 4;
+
+
+
+--To retrieve the customers for each branch individually
+
+select b.branch_name, c.c_id, c.name AS customer_name, c.gender, c.age
+FROM customer c
+JOIN branch b ON c.branch_id = b.branch_id
+ORDER BY b.branch_id, c.c_id;
+
+--or
+
+select b.branch_name, listagg(c.name, ', ') within group (order by c.name) as customers
+FROM customer c
+JOIN branch b ON c.branch_id = b.branch_id
+GROUP BY b.branch_id, b.branch_name;
+
+
+
+--Retrieve the names of customers who have made a purchase of a medicine with a price higher than the average price:
+
+select c.name as customer_name from customer c where c.c_id in ( select s.c_id from sale s where s.amount> (select avg(price) from medicine));
+
+
+
+--Retrieve the branch names and the total number of sales made in each branch
+
+select branch_name, (select count(*) from sale s join customer c on s.c_id = c.c_id
+where c.branch_id = b.branch_id) as total_sales from branch b;
+
+--it will show all
+--later will show only the ones that participated
+
+select b.branch_name, count(*) as sales_count from sale s 
+join customer c on c.c_id = s.c_id
+join branch b on b.branch_id = c.branch_id 
+group by b.branch_name;
+
+
+
+--Retrieve the total amount of sales in respective branches;
+
+select b.branch_name, ( select sum(amount) from sale s join customer c on c.c_id = s.c_id 
+where c.branch_id = b.branch_id) as total_amount from branch b;
+
+--or
+
+select b.branch_name, sum(amount) as total_amount
+from sale s
+join customer c using(c_id)
+join branch b using(branch_id)
+group by b.branch_name;
+
+
+
+--Retrieve the customer names and the total amount spent by each customer on medicine purchases:
+
+select c.name, ( select sum(amount) from sale s where s.c_id = c.c_id) as total_purchase from customer c;
+
+select c.name, sum(amount) as total_purchase
+from sale s
+join customer c on c.c_id = s.c_id
+group by c.name; 
+
+
+
+--Retrieves all customers who belong to branches located in Dhaka
+
+select * from customer c where branch_id in (select branch_id from branch where city='Dhaka');
+
+
+
+--Retrieves all male customers who are at least 30 years old.
+
+select * from customer where gender='Male' and age>=30;
+
+
+
+-- Retrieves the names of customers from Branch 1 and Branch 2
+
+ select * from customer where branch_id = 1 union select * from customer where branch_id = 2;
+
+--or
+SELECT *
+FROM customer
+WHERE branch_id = 1 OR branch_id = 2;
+
+--or
+SELECT *
+FROM customer
+WHERE branch_id in(1,2);
+
+
+--Retrieve the branch names along with the total sales amount and the average sales amount for each branch:
+
+select b.branch_name, sum(s.amount) as total_sales, avg(s.amount) as average_sale from branch b join customer c using(branch_id) join sale s using(c_id) group by b.branch_name;
+
+
+
+--Retrieves the names of customers from Branch 1, excluding those who are female.
+
+select * from customer where branch_id = 1 except select * from customer where gender = 'Female';
+
+select * from customer where branch_id = 1 and gender = 'Male';
+
+
+
+--Retrieves all customers who have made sales.
+
+select * from customer c where exists( select * from sale s where s.c_id = c.c_id);
+
+
+--Retrieves all customers who have not made any sales.
+
+select * from customer c where not exists( select * from sale s where s.c_id = c.c_id);
+
+
+--Retrieve all the customer name who bought the medicine napa
+
+select c.name from customer c where c_id in (select c_id from sale join medicine using(med_id) where med_name = 'Napa');
+
+select name from customer where c_id in (select c_id from sale where med_id = (select med_id from medicine where med_name = 'Napa'));
+
+
+--find the sales happened between two dates
+
+select s.s_id,c.name as customer_name, m.med_name, s.amount, s."Date"
+from sale s
+join customer c using(c_id)
+join medicine m using(med_id)
+where s."Date" between to_date('2023-01-01','YYYY-MM-DD') and to_date('2023-03-31','YYYY-MM-DD');
+
+
+
+-- retrieve the names of customers who made a purchase between specified dates
+
+select c.name from customer c where c.c_id in (
+  select s.c_id from sale s 
+    where s."Date" between to_date('2023-01-01','YYYY-MM-DD') and to_date('2023-03-31','YYYY-MM-DD'));
+
+
+--
+--PL_SQL
+--
+
+
+-- PL/SQL procedure to calculate the total sales amount for each branch
+
+CREATE OR REPLACE PROCEDURE calculate_total_sale AS
+   total_sales NUMBER;
+BEGIN
+   FOR branch_rec IN (SELECT DISTINCT b.branch_id, b.branch_name FROM branch b)
+   LOOP
+      total_sales := 0;
+      FOR sale_rec IN (SELECT s.amount FROM sale s JOIN customer c ON s.c_id = c.c_id WHERE c.branch_id = branch_rec.branch_id)
+      LOOP
+         total_sales := total_sales + sale_rec.amount;
+      END LOOP;
+      DBMS_OUTPUT.PUT_LINE('Total sales for ' || branch_rec.branch_name || ': ' || total_sales);
+   END LOOP;
+END;
+/
+
+SET SERVEROUTPUT ON
+BEGIN
+   calculate_total_sale();
+END;
+/
+
+
+
+-- Retrieve all the customer names who bought the medicine "Napa"
+
+SET SERVEROUTPUT ON
+DECLARE
+   CURSOR cr IS 
+      SELECT c.name FROM customer c
+      JOIN sale s USING (c_id)
+      JOIN medicine m USING (med_id)
+      WHERE m.med_name = 'Napa';
+   customer_name cr%ROWTYPE;
+BEGIN
+   OPEN cr;
+   LOOP
+      FETCH cr INTO customer_name;
+      EXIT WHEN cr%NOTFOUND;
+      DBMS_OUTPUT.PUT_LINE('Customer name: ' || customer_name.name);
+   END LOOP;
+   CLOSE cr;
+END;
+/
+
+-- Retrieve all the customer names who bought the given medicine
+
+CREATE OR REPLACE PROCEDURE get_customer_name(med_name IN medicine.med_name%TYPE) AS
+   CURSOR cr IS
+      SELECT DISTINCT c.name FROM customer c
+      JOIN sale s USING (c_id)
+      JOIN medicine m USING (med_id)
+      WHERE m.med_name = med_name;
+
+   customer_name customer.name%TYPE;
+BEGIN
+   OPEN cr;
+   LOOP
+      FETCH cr INTO customer_name;
+      EXIT WHEN cr%NOTFOUND;
+      DBMS_OUTPUT.PUT_LINE('Customer name: ' || customer_name);
+   END LOOP;
+   CLOSE cr;
+END;
+/
+
+SET SERVEROUTPUT ON
+DECLARE
+   med medicine.med_name%TYPE;
+BEGIN
+   med := 'Napa';
+   get_customer_name(med);
+END;
+/
+
+-- PL/SQL function to retrieve the count of customers in a specific branch
+
+CREATE OR REPLACE FUNCTION count_customer(b_name IN branch.branch_name%TYPE) RETURN NUMBER AS
+   customer_count NUMBER;
+BEGIN
+   SELECT COUNT(*) INTO customer_count FROM customer c JOIN branch b USING (branch_id) WHERE b.branch_name = b_name;
+   RETURN customer_count;
+END;
+/
+
+SET SERVEROUTPUT ON
+DECLARE
+   customer_count NUMBER;
+BEGIN 
+   customer_count := count_customer('Uttara');
+   DBMS_OUTPUT.PUT_LINE('Total customer: ' || customer_count);
+END;
+/
+
+-- PL/SQL loop to display the names of customers along with their branch names
+
+SET SERVEROUTPUT ON
+DECLARE
+   customer_name customer.name%TYPE;
+   branch_name branch.branch_name%TYPE;
+BEGIN
+   FOR cr IN (SELECT c.name, b.branch_name FROM customer c JOIN branch b USING (branch_id))
+   LOOP
+      customer_name := cr.name;
+      branch_name := cr.branch_name;
+      DBMS_OUTPUT.PUT_LINE('Customer: ' || customer_name || '  Branch: ' || branch_name);
+   END LOOP;
+END;
+/
+
+-- PL/SQL cursor to retrieve the details of pharmacists in a specific branch
+
+SET SERVEROUTPUT ON
+DECLARE
+   CURSOR c IS 
+      SELECT p.name, p.position, p.contact, b.branch_name
+      FROM pharmacist p
+      JOIN branch b USING (branch_id)
+      WHERE b.branch_name = 'Uttara';
+   p_rec c%ROWTYPE;
+BEGIN
+   OPEN c;
+   LOOP 
+      FETCH c INTO p_rec;
+      EXIT WHEN c%NOTFOUND;
+      DBMS_OUTPUT.PUT_LINE('Pharmacist Name: ' || p_rec.name || ' Position: ' || p_rec.position || ' Contact: ' || p_rec.contact || ' Branch_name: ' || p_rec.branch_name);
+   END LOOP;
+   CLOSE c;
+END;
+/
+
+-- Retrieve the names of customers who made a purchase between specified dates
+
+DECLARE
+   v_customer_name customer.name%TYPE;
+   v_sale_date sale."Date"%TYPE;
+BEGIN
+   FOR sale_rec IN (SELECT c.name, s."Date"
+                    FROM sale s
+                    JOIN customer c ON s.c_id = c.c_id
+                    WHERE s."Date" BETWEEN TO_DATE('2023-01-01', 'YYYY-MM-DD') AND TO_DATE('2023-03-31', 'YYYY-MM-DD'))
+   LOOP
+      v_customer_name := sale_rec.name;
+      v_sale_date := sale_rec."Date";
+      
+      DBMS_OUTPUT.PUT_LINE('Customer Name: ' || v_customer_name || ', Sale Date: ' || v_sale_date);
+   END LOOP;
+END;
+/
+
+
 

From 1623f91355841f5719e21a8d37c1b04280a78ed6 Mon Sep 17 00:00:00 2001
From: Raha111 <67999013+Raha111@users.noreply.github.com>
Date: Fri, 16 Jun 2023 21:46:02 +0600
Subject: [PATCH 6/7] Added Trigger to ALL.sql

---
 1907111 DB project PMS/ALL.sql | 134 +++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)

diff --git a/1907111 DB project PMS/ALL.sql b/1907111 DB project PMS/ALL.sql
index 2b6c497..aa5a8ab 100644
--- a/1907111 DB project PMS/ALL.sql	
+++ b/1907111 DB project PMS/ALL.sql	
@@ -740,5 +740,139 @@ BEGIN
 END;
 /
 
+--TRIGGER
+
+--This trigger sets the default value for the city column as "Unknown" before inserting a new row into the branch table.
+
+CREATE OR REPLACE TRIGGER trg_branch_insert
+BEFORE INSERT ON branch
+FOR EACH ROW
+BEGIN
+    IF :NEW.city IS NULL THEN
+        :NEW.city := 'Unknown';
+    END IF;
+END;
+/
+
+
+
+--This trigger displays a message indicating that a pharmacist's information has been updated whenever a row is updated in the pharmacist table.
+
+CREATE OR REPLACE TRIGGER trg_pharmacist_update
+AFTER UPDATE ON pharmacist
+FOR EACH ROW
+BEGIN
+    DBMS_OUTPUT.PUT_LINE('Pharmacist information updated: ' || :NEW.name);
+END;
+/
+
+
+--This trigger checks if the price of a medicine is negative and raises an exception if it is.
+
+CREATE OR REPLACE TRIGGER trg_medicine_price_check
+BEFORE INSERT OR UPDATE ON medicine
+FOR EACH ROW
+BEGIN
+    IF :NEW.price < 0 THEN
+        RAISE_APPLICATION_ERROR(-20001, 'Invalid medicine price. Price cannot be negative.');
+    END IF;
+END;
+/
+
+
+--This trigger prevents the deletion of a customer if their age is below 18 and raises an exception.
+
+
+CREATE OR REPLACE TRIGGER trg_customer_delete
+BEFORE DELETE ON customer
+FOR EACH ROW
+BEGIN
+    IF :OLD.age < 18 THEN
+        RAISE_APPLICATION_ERROR(-20002, 'Cannot delete customer. Age is below 18.');
+    END IF;
+END;
+/
+
+
+
+--This trigger updates the total sales amount for a branch whenever a new sale is inserted into the sale table.
+
+
+
+CREATE OR REPLACE TRIGGER trg_sale_insert
+AFTER INSERT ON sale
+FOR EACH ROW
+BEGIN
+    UPDATE branch
+    SET total_sales = total_sales + :NEW.amount
+    WHERE branch_id = (SELECT branch_id FROM customer WHERE c_id = :NEW.c_id);
+END;
+/
+
+
+
+-- This trigger deletes all customers from the customer table that belong to the branch being deleted.
+
+
+CREATE OR REPLACE TRIGGER trg_branch_delete
+AFTER DELETE ON branch
+FOR EACH ROW
+BEGIN
+    DELETE FROM customer WHERE branch_id = :OLD.branch_id;
+END;
+/
+
+
+
+--This trigger deletes all sales records of a customer when that customer is deleted.
+
+
+CREATE OR REPLACE TRIGGER trg_customer_delete
+AFTER DELETE ON customer
+FOR EACH ROW
+BEGIN
+    DELETE FROM sale WHERE c_id = :OLD.c_id;
+END;
+/
+
+
+--This trigger updates the total sales amount for a branch when a new sale record is inserted.
+
+CREATE OR REPLACE TRIGGER trg_sale_insert
+AFTER INSERT ON sale
+FOR EACH ROW
+BEGIN
+    UPDATE branch SET total_sales = total_sales + :NEW.Amount WHERE branch_id = (SELECT branch_id FROM customer WHERE c_id = :NEW.c_id);
+END;
+/
+
+
+--This trigger updates the total sales amount for a branch when a sale record is updated.
+
+
+CREATE OR REPLACE TRIGGER trg_sale_update
+AFTER UPDATE ON sale
+FOR EACH ROW
+BEGIN
+    UPDATE branch SET total_sales = total_sales - :OLD.Amount + :NEW.Amount WHERE branch_id = (SELECT branch_id FROM customer WHERE c_id = :NEW.c_id);
+END;
+/
+
+
+--This trigger prevents the deletion of a medicine if it is associated with any sale records.
+
+
+CREATE OR REPLACE TRIGGER trg_medicine_delete
+BEFORE DELETE ON medicine
+FOR EACH ROW
+DECLARE
+    v_sale_count NUMBER;
+BEGIN
+    SELECT COUNT(*) INTO v_sale_count FROM sale WHERE med_id = :OLD.med_id;
+    IF v_sale_count > 0 THEN
+        RAISE_APPLICATION_ERROR(-20001, 'Cannot delete medicine. It is associated with sale records.');
+    END IF;
+END;
+/
 
 

From de4ff7e08b366e5e730efac46fd8303e47aa4721 Mon Sep 17 00:00:00 2001
From: Raha111 <67999013+Raha111@users.noreply.github.com>
Date: Fri, 16 Jun 2023 21:46:46 +0600
Subject: [PATCH 7/7] Added trigger file

---
 1907111 DB project PMS/Trigger.sql | 155 +++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 1907111 DB project PMS/Trigger.sql

diff --git a/1907111 DB project PMS/Trigger.sql b/1907111 DB project PMS/Trigger.sql
new file mode 100644
index 0000000..7ea862c
--- /dev/null
+++ b/1907111 DB project PMS/Trigger.sql	
@@ -0,0 +1,155 @@
+--This trigger sets the default value for the city column as "Unknown" before inserting a new row into the branch table.
+
+CREATE OR REPLACE TRIGGER trg_branch_insert
+BEFORE INSERT ON branch
+FOR EACH ROW
+BEGIN
+    IF :NEW.city IS NULL THEN
+        :NEW.city := 'Unknown';
+    END IF;
+END;
+/
+
+
+
+--This trigger displays a message indicating that a pharmacist's information has been updated whenever a row is updated in the pharmacist table.
+
+CREATE OR REPLACE TRIGGER trg_pharmacist_update
+AFTER UPDATE ON pharmacist
+FOR EACH ROW
+BEGIN
+    DBMS_OUTPUT.PUT_LINE('Pharmacist information updated: ' || :NEW.name);
+END;
+/
+
+
+--This trigger checks if the price of a medicine is negative and raises an exception if it is.
+
+CREATE OR REPLACE TRIGGER trg_medicine_price_check
+BEFORE INSERT OR UPDATE ON medicine
+FOR EACH ROW
+BEGIN
+    IF :NEW.price < 0 THEN
+        RAISE_APPLICATION_ERROR(-20001, 'Invalid medicine price. Price cannot be negative.');
+    END IF;
+END;
+/
+
+
+--This trigger prevents the deletion of a customer if their age is below 18 and raises an exception.
+
+
+CREATE OR REPLACE TRIGGER trg_customer_delete
+BEFORE DELETE ON customer
+FOR EACH ROW
+BEGIN
+    IF :OLD.age < 18 THEN
+        RAISE_APPLICATION_ERROR(-20002, 'Cannot delete customer. Age is below 18.');
+    END IF;
+END;
+/
+
+
+
+--This trigger updates the total sales amount for a branch whenever a new sale is inserted into the sale table.
+
+
+
+CREATE OR REPLACE TRIGGER trg_sale_insert
+AFTER INSERT ON sale
+FOR EACH ROW
+BEGIN
+    UPDATE branch
+    SET total_sales = total_sales + :NEW.amount
+    WHERE branch_id = (SELECT branch_id FROM customer WHERE c_id = :NEW.c_id);
+END;
+/
+
+
+
+-- This trigger deletes all customers from the customer table that belong to the branch being deleted.
+
+
+CREATE OR REPLACE TRIGGER trg_branch_delete
+AFTER DELETE ON branch
+FOR EACH ROW
+BEGIN
+    DELETE FROM customer WHERE branch_id = :OLD.branch_id;
+END;
+/
+
+
+
+--This trigger deletes all sales records of a customer when that customer is deleted.
+
+
+CREATE OR REPLACE TRIGGER trg_customer_delete
+AFTER DELETE ON customer
+FOR EACH ROW
+BEGIN
+    DELETE FROM sale WHERE c_id = :OLD.c_id;
+END;
+/
+
+
+--This trigger updates the total sales amount for a branch when a new sale record is inserted.
+
+CREATE OR REPLACE TRIGGER trg_sale_insert
+AFTER INSERT ON sale
+FOR EACH ROW
+BEGIN
+    UPDATE branch SET total_sales = total_sales + :NEW.Amount WHERE branch_id = (SELECT branch_id FROM customer WHERE c_id = :NEW.c_id);
+END;
+/
+
+
+--This trigger updates the total sales amount for a branch when a sale record is updated.
+
+
+CREATE OR REPLACE TRIGGER trg_sale_update
+AFTER UPDATE ON sale
+FOR EACH ROW
+BEGIN
+    UPDATE branch SET total_sales = total_sales - :OLD.Amount + :NEW.Amount WHERE branch_id = (SELECT branch_id FROM customer WHERE c_id = :NEW.c_id);
+END;
+/
+
+
+--This trigger prevents the deletion of a medicine if it is associated with any sale records.
+
+
+CREATE OR REPLACE TRIGGER trg_medicine_delete
+BEFORE DELETE ON medicine
+FOR EACH ROW
+DECLARE
+    v_sale_count NUMBER;
+BEGIN
+    SELECT COUNT(*) INTO v_sale_count FROM sale WHERE med_id = :OLD.med_id;
+    IF v_sale_count > 0 THEN
+        RAISE_APPLICATION_ERROR(-20001, 'Cannot delete medicine. It is associated with sale records.');
+    END IF;
+END;
+/
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+