SQL Query Error: Invalid Column Name

I am new to SQL and I have this problem, I can't seem to search on google. This is my school work so please be patient with my coding. Now the problem is i am doing a select query and SQL does not seem to recognize the column I need

here is an attached picture, it just says invalid column but it is clear that the column exist

Dropbox link to the picture

here is the complete code

create database Hairsalon

use Hairsalon   

create table Employee
(
    Employee_ID int primary key,
    Name varchar(20),
    Birthday date,
    Gender char(1)
);

create table Inventory
(
    Inventory_ID int primary key,
    Name varchar(30),
    Stock int   
)

create table Record
(
    Transaction_Number int primary key,
    Transaction_Date date,
    Transaction_Time time
);

alter table Record
    drop column Transaction_Date
alter table Record
    drop column Transaction_Time
alter table Record
    add Transaction_DT varchar(30)
alter table Record
    add Transaction_Description varchar(255)

Create table Inventory_Record
(
    Transaction_Number int primary key foreign key references Record(Transaction_Number),
    Inventory_ID int foreign key references Inventory(Inventory_ID),
);

create table Customer_Record
(
    Transaction_Number int foreign key references Record(Transaction_Number),
    Customer_ID int primary key,
    Service_Description varchar(255),
    Pay money
);

create table Customer
(
    Customer_ID int foreign key references Customer_Record(Customer_ID),
    Name varchar(20),
    Payable money,
    Session_DT varchar(20)
);

create table Employee_Record
(
    Transaction_Number int primary key foreign key references Record(Transaction_Number),
    Employee_ID int foreign key references Employee(Employee_ID),
    Time_In time,
    Time_Out time,
    Record_Date date,
    Customer_Count int
);

create table Salon
(
    Customer_ID  int foreign key references Customer_Record(Customer_ID),
    Employee_ID  int foreign key references Employee(Employee_ID),
    Inventory_ID int foreign key references Inventory(Inventory_ID),
    Transaction_Number int foreign key references Record(Transaction_Number)
);

alter table Customer
    add Session_DT varchar(20)

alter table Customer
    drop column Customer_ID
alter table Customer
    add Customer_ID int foreign key references Customer_Record(Customer_ID)

alter table Customer_Record
    add Employee_ID int foreign key references Employee(Employee_ID)

alter table Employee
    add [Type] varchar(15)

alter table Employee
    drop column Birthday
    alter table Employee
    drop column Birthday

alter table Employee_Record
    drop column Time_In
alter table Employee_Record
    drop column Time_Out
alter table Employee_Record
    drop column Record_Date
alter table Employee_Record
    add Time_In varchar(20)
alter table Employee_Record
    add Time_Out varchar(20)
alter table Employee_Record
    add Record_Date varchar(20)
alter table Employee_Record
    drop column Customer_Count

insert into Employee 
values(1,'Test Employee','M','Cashier','bday')
insert into Employee 
values(-1,'Null','N','Null','Null')
insert into Employee values(1,'test1','M','HairDresser','9/8/2014')

INSERT INTO Record  values(2,'')
INSERT INTO Customer_Record values(1,1,'asd',123.00,null)
INSERT INTO Customer values(1,'test1',0,'9/8/2014 8:16 AM')

SELECT * FROM Record
select * from Customer
SELECT * FROM Customer_Record
SELECT * FROM Employee

SELECT DISTINCT Customer.Name as 'Customer Name', Employee.Name as 'Attendee'
FROM Customer, Customer_Record, Employee_Record, Employee
WHERE ( Customer_Record.Transaction_Number = Employee_Record.Transaction_Number 
        AND Employee_Record.Employee_ID = Employee.Employee_ID
        AND Customer.Customer_ID = Customer_Record.Customer_ID
        ) OR ( Customer_Record.Transaction_Number = Employee_Record.Transaction_Number 
        AND Customer_Record.Employee_ID = -1
        AND Customer.Customer_ID = Customer_Record.Customer_ID
        )

insert into Employee_Record values(9,1,'10:00','10:99','date')

select * from Record
select * from Customer
select * from Employee
select * from Employee_Record
select * from Customer_Record

select count(Customer_ID) from Customer
select count(Transaction_Number) from Record

insert into Customer
values(1,'test',120,DATEFROMPARTS(32,12,31))

INSERT INTO Customer_Record values(1,1,'Long Haired Customer: ',0, null)

DELETE FROM Customer WHERE Customer_ID = 1

DELETE FROM Customer
DELETE FROM Customer_Record
DELETE FROM Record

DELETE FROM Employee
DELETE FROM Employee_Record
DELETE FROM Inventory
DELETE FROM Inventory_Record

commit