Source code for oracle 12c
CREATE TABLE CUSTOMER (
CustomerID Char(20) NOT NULL,
CustomerFirstName Char(20) NOT NULL,
CustomerLastName Char(25) NOT NULL,
CustomerAddress Char(45) NOT NULL,
CustomerEmail Char(100) NOT NULL,
CONSTRAINT Customer_PK Primary Key(CustomerID)
CREATE TABLE EMPLOYEE (
EmployeeID VarChar(10) NOT NULL,
EmployeeFName VarChar(20) NOT NULL,
EmployeeRole VarChar(30) NOT NULL, CONSTRAINT
Employee_PK Primary Key(EmployeeID)
CREATE TABLE PRODUCT (
ProductID VarChar(10) NOT NULL,
ProductName VarChar(20) NOT NULL,
ProductType VarChar(20) NOT NULL,
ProductPrice Number(8,2) NOT NULL,
CONSTRAINT Product_PK Primary Key(ProductID)
CREATE TABLE CUSTORDER (
CustOrderID VarChar(10) NOT NULL,
CustOrderDate Date NOT NULL,
CustShippingStatus VarChar(20) NOT NULL,
SupplierID VarChar(20) NOT NULL,
CONSTRAINT CustOrder_PK Primary Key (CustOrderID),
CONSTRAINT CustOrder_FK FOREIGN KEY(SupplierID)
REFERENCES SUPPLIER(SupplierID)
CREATE TABLE SUPPLIER ( SupplierID Char(10) NOT NULL,
SupplierName Char(20) NOT NULL,
SupplierAddress Char(45) NOT NULL,
CONSTRAINT Supplier_PK Primary Key (SupplierID)
CREATE TABLE INVOICE (
InvoiceID Char(20) NOT NULL,
TotalItems Int NOT NULL,
TotalCost Number(8,2) NOT NULL,
SalesDate Date NOT NULL,
PaymentType VarChar(10) NOT NULL,
ProductID VarChar(10) NOT NULL,
EmployeeID VarChar(10) NOT NULL,
CustomerID Char(20) NOT NULL,
SupplierID Char(10) NOT NULL,
CONSTRAINT Invoice_PK Primary Key(InvoiceID),
CONSTRAINT Invoice_Product_FK Foreign Key(ProductID)
REFERENCES PRODUCT(ProductID),
CONSTRAINT Invoice_Employee_FK Foreign Key(EmployeeID)
REFERENCES EMPLOYEE(EmployeeID),
CONSTRAINT Invoice_Customer_FK Foreign Key(CustomerID)
REFERENCES CUSTOMER(CustomerID),
CONSTRAINT Invoice_Supplier_FK Foreign Key(SupplierID)
REFERENCES SUPPLIER(SupplierID)
You need to align the datatype and length of the referencing column of each foreign key with the column it references in the source table.
In your code, SUPPLIER(SupplierID) is declared as Char(20). On the other hand, referencing column INVOICE(SupplierID) is Char(10) and CUSTORDER(SupplierID) is VarChar(20). If you make these two columns Char(20), you code just works.
Aside: the referenced table must exist at the time when the referencing table is created - your code createst CUSTORDER before SUPPLIER. However I assume that's a typo when writing the question, otherwise you would be getting a different error: ORA-00942: table or view does not exist.
You also have a missing right parentheses at the end of each and every create table statement: I would consider these typos too.
Demo on DB Fiddle
Related
I need to modify the structure of the sample database such that after the
modifications it is possible to store information about the total number of times each product has been ordered by the customers.
Please note that some products may have
not been ordered at all. It is important to find the best design. I need to enforce
appropriate consistency constraints.
After this, the script saves in the sample database information about the total number of
times each product has been ordered by the customers.
I am using oracle SQL developer.
Here is what I have tried so far:
CREATE TABLE TOTAL_NUM(
CUSTOMER_CODE VARCHAR(30) NOT NULL,
PRODUCT_NAME VARCHAR(30) NOT NULL,
TOTAL_ORDERED DECIMAL(2) NOT NULL,
CONSTRAINT TOTALO_PKEY1 PRIMARY KEY(CUSTOMER_CODE),
CONSTRAINT TOTALO_FKEY1 FOREIGN KEY(CUSTOMER_CODE) REFERENCES CUSTOMER(CUSTOMER_CODE),
CONSTRAINT TOTALO_UNIQUE_NAME UNIQUE(PRODUCT_NAME),
CONSTRAINT TOTALO_FKEY2 FOREIGN KEY(PRODUCT_NAME) REFERENCES PRODUCT(PRODUCT_NAME),
CONSTRAINT TOTALO_CHECK CHECK(TOTAL_ORDERED > 0));
INSERT INTO TOTAL_NUM(
SELECT ORDERS.CUSTOMER_CODE, COUNT(*) AS TOTAL_ORDERED
FROM ORDERS
LEFT JOIN ORDER_DETAIL ON ORDERS.ORDER_ID = ORDER_DETAIL.ORDER_ID);
I have created a seperate table to store this information, however when I try to insert the values into the table, I get an error "not enough values".
Here are the other tables in the database:
CREATE TABLE CATEGORY
(
CATEGORY_NAME VARCHAR(30) NOT NULL,
DESCRIPTION VARCHAR(2000) NOT NULL,
PICTURE VARCHAR(255) NOT NULL,
CONSTRAINT PK_CATEGORY PRIMARY KEY (CATEGORY_NAME)
);
CREATE TABLE CUSTOMER
(
CUSTOMER_CODE VARCHAR(5) NOT NULL,
COMPANY_NAME VARCHAR(40) NOT NULL,
CONTACT_NAME VARCHAR(30) NOT NULL,
CONTACT_TITLE VARCHAR(30) NOT NULL,
ADDRESS VARCHAR(60) NOT NULL,
CITY VARCHAR(15) NOT NULL,
REGION VARCHAR(15) NULL,
POSTAL_CODE VARCHAR(10) NULL,
COUNTRY VARCHAR(15) NOT NULL,
PHONE VARCHAR(24) NOT NULL,
FAX VARCHAR(24) NULL,
CONSTRAINT PK_CUSTOMER PRIMARY KEY (CUSTOMER_CODE)
);
CREATE TABLE EMPLOYEE
(
EMPLOYEE_ID NUMBER(9) NOT NULL,
LASTNAME VARCHAR(20) NOT NULL,
FIRSTNAME VARCHAR(10) NOT NULL,
TITLE VARCHAR(30) NOT NULL,
TITLE_OF_COURTESY VARCHAR(25) NOT NULL,
BIRTHDATE DATE NOT NULL,
HIREDATE DATE NOT NULL,
ADDRESS VARCHAR(60) NOT NULL,
CITY VARCHAR(15) NOT NULL,
REGION VARCHAR(15) NULL,
POSTAL_CODE VARCHAR(10) NOT NULL,
COUNTRY VARCHAR(15) NOT NULL,
HOME_PHONE VARCHAR(24) NOT NULL,
EXTENSION VARCHAR(4) NOT NULL,
PHOTO VARCHAR(255) NOT NULL,
NOTES VARCHAR(2000) NOT NULL,
REPORTS_TO NUMBER(9) NULL,
CONSTRAINT PK_EMPLOYEE PRIMARY KEY (EMPLOYEE_ID)
);
CREATE TABLE SUPPLIER
(
COMPANY_NAME VARCHAR(40) NOT NULL,
CONTACT_NAME VARCHAR(30) NOT NULL,
CONTACT_TITLE VARCHAR(30) NOT NULL,
ADDRESS VARCHAR(60) NOT NULL,
CITY VARCHAR(15) NOT NULL,
REGION VARCHAR(15) NULL,
POSTAL_CODE VARCHAR(10) NOT NULL,
COUNTRY VARCHAR(15) NOT NULL,
PHONE VARCHAR(24) NOT NULL,
FAX VARCHAR(24) NULL,
HOME_PAGE VARCHAR(500) NULL,
CONSTRAINT PK_SUPPLIER PRIMARY KEY (COMPANY_NAME)
);
CREATE TABLE SHIPPER
(
COMPANY_NAME VARCHAR(40) NOT NULL,
PHONE VARCHAR(24) NULL,
CONSTRAINT PK_SHIPPER PRIMARY KEY (COMPANY_NAME),
CONSTRAINT CK_SHIPPER UNIQUE (PHONE)
);
CREATE TABLE PRODUCT
(
PRODUCT_NAME VARCHAR(40) NOT NULL,
SUPPLIER_NAME VARCHAR(40) NOT NULL,
CATEGORY_NAME VARCHAR(30) NOT NULL,
QUANTITY_PER_UNIT VARCHAR(20) NULL,
UNIT_PRICE NUMBER(10,2) DEFAULT 0,
UNITS_IN_STOCK NUMBER(9) DEFAULT 0,
UNITS_ON_ORDER NUMBER(9) DEFAULT 0,
REORDER_LEVEL NUMBER(9) DEFAULT 0,
DISCONTINUED CHAR(1) DEFAULT 'N',
CONSTRAINT PK_PRODUCT PRIMARY KEY (PRODUCT_NAME),
CONSTRAINT FK_CATEGORY_NAME FOREIGN KEY (CATEGORY_NAME) REFERENCES CATEGORY(CATEGORY_NAME),
CONSTRAINT FK_SUPPLIER_NAME FOREIGN KEY (SUPPLIER_NAME) REFERENCES SUPPLIER(COMPANY_NAME),
CONSTRAINT CK_PRODUCT_UNIT_PRICE CHECK (UNIT_PRICE >= 0),
CONSTRAINT CK_PRODUCT_UNITS_IN_STOCK CHECK (UNITS_IN_STOCK >= 0),
CONSTRAINT CK_PRODUCT_UNITS_ON_ORDER CHECK (UNITS_ON_ORDER >= 0),
CONSTRAINT CK_PRODUCT_REORDER_LEVEL CHECK (REORDER_LEVEL >= 0),
CONSTRAINT CK_PRODUCT_DISCONTINUED CHECK (DISCONTINUED in ('Y','N'))
);
CREATE TABLE ORDERS
(
ORDER_ID NUMBER(9) NOT NULL,
CUSTOMER_CODE VARCHAR(5) NOT NULL,
EMPLOYEE_ID NUMBER(9) NOT NULL,
ORDER_DATE DATE NOT NULL,
REQUIRED_DATE DATE NOT NULL,
SHIPPED_DATE DATE NOT NULL,
SHIP_VIA VARCHAR(40) NOT NULL,
FREIGHT NUMBER(10,2) DEFAULT 0,
SHIP_NAME VARCHAR(40) NOT NULL,
SHIP_ADDRESS VARCHAR(60) NOT NULL,
SHIP_CITY VARCHAR(15) NOT NULL,
SHIP_REGION VARCHAR(15) NULL,
SHIP_POSTAL_CODE VARCHAR(10) NULL,
SHIP_COUNTRY VARCHAR(15) NOT NULL,
CONSTRAINT PK_ORDERS PRIMARY KEY (ORDER_ID),
CONSTRAINT FK_CUSTOMER_CODE FOREIGN KEY (CUSTOMER_CODE) REFERENCES CUSTOMER(CUSTOMER_CODE),
CONSTRAINT FK_EMPLOYEE_ID FOREIGN KEY (EMPLOYEE_ID) REFERENCES EMPLOYEE(EMPLOYEE_ID),
CONSTRAINT FK_SHIP_VIA FOREIGN KEY (SHIP_VIA) REFERENCES SHIPPER(COMPANY_NAME)
);
CREATE TABLE ORDER_DETAIL
(
ORDER_ID NUMBER(9) NOT NULL,
PRODUCT_NAME VARCHAR(40) NOT NULL,
UNIT_PRICE NUMBER(10,2) DEFAULT 0.0,
QUANTITY NUMBER(9) DEFAULT 1,
DISCOUNT NUMBER(4,2) DEFAULT 0.0,
CONSTRAINT PK_ORDER_DETAIL PRIMARY KEY (ORDER_ID, PRODUCT_NAME),
CONSTRAINT FK_ORDER_ID FOREIGN KEY (ORDER_ID) REFERENCES ORDERS (ORDER_ID),
CONSTRAINT FK_PRODUCT_NAME FOREIGN KEY (PRODUCT_NAME) REFERENCES PRODUCT (PRODUCT_NAME),
CONSTRAINT CK_ORDER_DETAIL_UNIT_PRICE CHECK (UNIT_PRICE >= 0),
CONSTRAINT CK_ORDER_DETAIL_QUANTITY CHECK (QUANTITY > 0),
CONSTRAINT CK_ORDER_DETAIL_DISCOUNT CHECK (DISCOUNT between 0 and 1)
);
You're only inserting two columns into TOTAL_NUM, but it has three columns. You skipped PRODUCT_NAME. You need to use GROUP BY, otherwise it will aggregate all orders into a single row to insert.
INSERT INTO TOTAL_NUM (CUSTOMER_CODE, PRODUCT_NAME, TOTAL_ORDERED)
SELECT ORDERS.CUSTOMER_CODE, ORDER_DETAIL.PRODUCT_NAME, COUNT(*) AS TOTAL_ORDERED
FROM ORDERS
INNER JOIN ORDER_DETAIL ON ORDERS.ORDER_ID = ORDER_DETAIL.ORDER_ID
GROUP BY ORDERS.CUSTOMER_CODE ORDER_DETAIL.PRODUCT_NAME
You also should probably use INNER JOIN rather than LEFT JOIN. Otherwise you'll create a row with a null PRODUCT_NAME for any orders with no products.
I have seen many posts regarding the seemingly infamous ORA-00904 yet nothing seems to be helping. I am creating 2 tables (for now, more to come later) which are as follows;
CREATE TABLE Employee(
EmployeeID int NOT NULL,
PRIMARY KEY(EmployeeID),
customerID INT NOT NULL,
CONSTRAINT employee_customer_fk FOREIGN KEY (customerID) REFERENCES Customer(CustomerID),
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
);
and
CREATE TABLE Customer(
CustomerID INT NOT NULL PRIMARY KEY,
ProjectID INT NOT NULL,
FOREIGN KEY(ProjectID) REFERENCES Project(ProjectID), /*This is yet another table with a foreign key which needs to be sorted*/
CustomerName Char(255) NOT NULL,
PhoneNumber INT NOT NULL,
Region CHAR(255) NOT NULL
);
but every time I run it, I get error;
Error starting at line : 4 in command -
CREATE TABLE Employee(
EmployeeID int NOT NULL,
PRIMARY KEY(EmployeeID),
customerID INT NOT NULL,
CONSTRAINT employee_customer_fk FOREIGN KEY(customerID) REFERENCES Customer(CustomerID),
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
)
Error report -
ORA-00904: "CUSTOMERID": invalid identifier
00904. 00000 - "%s: invalid identifier"
*Cause:
*Action:
ANY HELP WOULD BE GREATLY APPRECIATED!
Oracle by default converts all names to UpperCase if you don't enquote them. (Edit: At the time of this answer the Foreign Key Constraint in the starting post did contain a quoted column name).
So, your constraint tries to find a column named "customerID" whereas the real name of your column is "CUSTOMERID".
Either enquote your column:
CREATE TABLE Employee(
EmployeeID int NOT NULL,
PRIMARY KEY(EmployeeID),
"customerID" INT NOT NULL,
CONSTRAINT employee_customer_fk FOREIGN KEY ("customerID") REFERENCES customer(CustomerID),
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
)
Don't use quotes on your FOREIGN KEY constraint:
CREATE TABLE Employee(
EmployeeID int NOT NULL,
PRIMARY KEY(EmployeeID),
customerID INT NOT NULL,
CONSTRAINT employee_customer_fk FOREIGN KEY (customerID) REFERENCES customer(CustomerID),
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
)
Or use quotes and write it uppercase in your foreign key constraint:
CREATE TABLE Employee(
EmployeeID int NOT NULL,
PRIMARY KEY(EmployeeID),
customerID INT NOT NULL,
CONSTRAINT employee_customer_fk FOREIGN KEY ("CUSTOMERID") REFERENCES customer(CustomerID),
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
)
As already mentioned, keeping the style consistent is recommended to prevent future problems, so Option 2 would be the easiest solution. Otherwise you need to enquote all columns to be consistent.
/Edit:
I just tried it - this definitely works with Oracle 12C:
CREATE TABLE Customer (
CustomerID INT,
PRIMARY KEY (CustomerID)
)
Followed by:
CREATE TABLE Employee(
EmployeeID int NOT NULL,
PRIMARY KEY(EmployeeID),
customerID INT NOT NULL,
CONSTRAINT employee_customer_fk FOREIGN KEY(customerID) REFERENCES Customer(CustomerID),
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
)
The referenced table needs to created before the foreign key reference. One method is to create the tables first and then add the foreign key references:
CREATE TABLE Employee (
EmployeeID int NOT NULL,
PRIMARY KEY (EmployeeID),
customerID INT NOT NULL,
LastName CHAR(20) NOT NULL,
MiddleInitial CHAR(1),
FirstName CHAR(20) NOT NULL,
Region CHAR(20) NOT NULL,
DateOfHire VARCHAR(20) NOT NULL,
Skill VARCHAR(50) NOT NULL
);
CREATE TABLE Customer (
CustomerID INT NOT NULL PRIMARY KEY,
ProjectID INT NOT NULL,
-- FOREIGN KEY(ProjectID) REFERENCES Project(ProjectID), /*This is yet another table with a foreign key which needs to be sorted*/
CustomerName Char(255) NOT NULL,
PhoneNumber INT NOT NULL,
Region CHAR(255) NOT NULL
);
alter table Employee add CONSTRAINT employee_customer_fk FOREIGN KEY (customerID) REFERENCES Customer (CustomerID)
Here is a db<>fiddle.
Note that I commented out the foreign key constraint to Project.
Also, in most data models you can just order the table creates -- there are no cycles in the foreign key "linkages". However, because you have not defined Project, I am suggesting this more general approach.
CREATE TABLE THREE_GIRLS_COFFEE_HUT
(
ShopName Char NOT NULL,
PhoneNumber Char(12) NOT NULL,
Address Char(20) NOT NULL,
City Char(20) NOT NULL,
State Char(2) NOT NULL,
ZipCode Char(5) NOT NULL,
CONSTRAINT ShopPK PRIMARY KEY (ShopName)
);
CREATE TABLE EMPLOYEE
(
EmployeeID Int NOT NULL IDENTITY(1,1),
EmployeeName Char(30) NOT NULL,
PhoneNumber Char(10) NOT NULL,
Address Char(20) NOT NULL,
City Char(20) NOT NULL,
State Char(2) NOT NULL,
ZipCode Char(5) NOT NULL,
EmployeeType Char(10) NOT NULL,
ShopName Char (25) FOREIGN KEY REFERENCES THREE_GIRLS_COFFEE_HUT (ShopName)
CONSTRAINT EmployeePK PRIMARY KEY(EmployeeID),
CONSTRAINT EmployeeAK1 UNIQUE(EmployeeName)
);
CREATE TABLE CUSTOMER
(
CustomerID Int NOT NULL IDENTITY(1000,1),
CustomerName Char(30) NULL,
PhoneNumber Char(10) NULL,
EmailAddress Char(30) NOT NULL,
CONSTRAINT CustomerPK PRIMARY KEY(CustomerID),
CONSTRAINT CustomerAK1 UNIQUE(EmailAddress)
);
CREATE TABLE [ORDER]
(
SalesOrderNumber INT NOT NULL IDENTITY (1500,1),
Date Numeric(6) NOT NULL,
Subtotal Numeric(6, 2) NOT NULL,
Tax Numeric(6, 2) NOT NULL,
Total Numeric(6, 2) NOT NULL,
CONSTRAINT OrderPK PRIMARY KEY (SalesOrderNumber),
CONSTRAINT EmpOrdFK FOREIGN KEY(EmployeeID)
REFERENCES EMPLOYEE(EmployeeID)
ON UPDATE CASCADE
ON DELETE NO ACTION,
CONSTRAINT CustOrdFK FOREIGN KEY (CustomerID)
REFERENCES CUSTOMER(CustomerID)
ON UPDATE NO ACTION
ON DELETE NO ACTION
);
CREATE TABLE PRODUCT
(
ProductNumber Int NOT NULL IDENTITY(2000,1),
ProductDescription Char(20) NOT NULL,
QuantityOnOrder Numeric(4) NOT NULL,
QuantityOnHand Numeric(4) NOT NULL,
OrderDate Date NOT NULL,
ExpirationDate Date NOT NULL,
CONSTRAINT ProductPK PRIMARY KEY(ProductNumber),
CONSTRAINT ValidExpDate CHECK (ExpirationDate > OrderDate)
);
CREATE TABLE MENU_ITEM (
ItemNumber Int NOT NULL IDENTITY(3000,1),
ItemDescription Char(30) NOT NULL,
ItemCost Numeric(6,2) NOT NULL,
ProductNumber Int FOREIGN KEY REFERENCES PRODUCT(ProductNumber)
CONSTRAINT MenuPK PRIMARY KEY(ItemNumber),
CONSTRAINT MenuAK1 UNIQUE(ItemDescription),
);
CREATE TABLE ORDER_LINE_ITEM (
SalesOrderNumber INT FOREIGN KEY REFERENCES [ORDER](SalesOrderNumber),
ItemNumber INT FOREIGN KEY REFERENCES MENU_ITEM(ItemNumber),
Quantity Numeric NOT NULL,
UnitPrice Numeric(6,2) NOT NULL,
ExtendedPrice Numeric (6,2) NOT NULL,
);
I got these errors and it will not process- I think I have problem with my foreign key but I am not sure.
Msg 1769, Level 16, State 1, Line 40
Foreign key 'EmpOrdFK' references invalid column 'EmployeeID' in referencing table 'ORDER'.
Msg 1750, Level 16, State 0, Line 40
Could not create constraint or index. See previous errors.
There's no column EmployeeID in the ORDER table, so:
EmpOrdFK FOREIGN KEY(EmployeeID) REFERENCES EMPLOYEE(EmployeeID)
which says, create a foreign key in which Order.EmployeeId references Employee.EmployeeId, can't work.
Did you want to add an EmployeeId column to Order?
(There's also no CustomerId in Order, so the next line
CONSTRAINT CustOrdFK FOREIGN KEY (CustomerID)
would have failed too, except it never got to run because of the first error.)
You probably want to add EmployeeId and CustomerId to the Order table.
When you are mapping foreign key from Order table to Employee table, you have to map on common column in both tables. If you look at order table, which is missing employeeId in
that table.
And also don't call it as ORDER table. ORDER is reserved keyword in SQL server.
References: https://learn.microsoft.com/en-us/sql/t-sql/language-elements/reserved-keywords-transact-sql?view=sql-server-ver15
I am completely new to writing SQL code and I am attempting to run a simple table creation, however I cannot find where the error in my programming is, and as I am completely new I am struggling with this creation.
This is a school project that I am working on, and hoping anyone can help.
The error I am receiving in 'SQLFiddle' is "Cannot add foreign key constraint" on the following code:
CREATE TABLE invoice(
invoice_id INT NOT NULL,
customer_id INT NOT NULL,
order_date DATE NULL,
spec_order_note VARCHAR(45) NULL,
PRIMARY KEY(invoice_id, customer_id),
FOREIGN KEY (customer_id)
REFERENCES customer.customer_id
ON DELETE CASCADE
ON UPDATE CASCADE
);
CREATE TABLE line_item (
invoice_id INT NOT NULL,
donut_id INT NOT NULL,
quantity INT NULL
CONSTRAINT donut_invoice
FOREIGN KEY invoice_id
REFERENCES invoice.invoice_id
ON DELETE RESTRICT
ON UPDATE RESTRICT
)
CREATE TABLE donut (
donut_id INT NOT NULL,
donut_name VARCHAR(15) NULL,
description VARCHAR(30) NULL,
unit_price INT NULL
PRIMARY KEY(donut_id),
)
CREATE TABLE customer (
customer_id INT NOT NULL,
last_name VARCHAR(15) NULL,
first_name VARCHAR(10) NULL,
street_add VARCHAR(20) NULL,
apt_num INT NULL,
city VARCHAR(20) NULL,
state VARCHAR(15) NULL,
zip_code INT NULL,
home_phone VARCHAR(10) NULL,
mobile_phone VARCHAR(10) NULL,
other_phone VARCHAR(10) NULL,
customer_notes VARCHAR(45) NULL
PRIMARY KEY(customer_id),
)
Any help is greatly appreciated.
You can only reference existing tables and columns in foreign constraints. So if you want to reference customer table in invoice's foreign key, you need to either create customer before invoice or add the foreign key constrain additionally using ALTER TABLE.
Apart of that, there's couple syntax errors in your code like missing semicolons and misplaced (missing and additional) commas.
A working code:
CREATE TABLE customer (
customer_id INT NOT NULL,
last_name VARCHAR(15) NULL,
first_name VARCHAR(10) NULL,
street_add VARCHAR(20) NULL,
apt_num INT NULL,
city VARCHAR(20) NULL,
state VARCHAR(15) NULL,
zip_code INT NULL,
home_phone VARCHAR(10) NULL,
mobile_phone VARCHAR(10) NULL,
other_phone VARCHAR(10) NULL,
customer_notes VARCHAR(45) NULL,
PRIMARY KEY(customer_id)
);
CREATE TABLE invoice(
invoice_id INT NOT NULL,
customer_id INT NOT NULL,
order_date DATE NULL,
spec_order_note VARCHAR(45) NULL,
PRIMARY KEY(invoice_id, customer_id),
FOREIGN KEY (customer_id)
REFERENCES customer (customer_id)
ON DELETE CASCADE
ON UPDATE CASCADE
);
CREATE TABLE line_item (
invoice_id INT NOT NULL,
donut_id INT NOT NULL,
quantity INT NULL,
CONSTRAINT donut_invoice
FOREIGN KEY (invoice_id)
REFERENCES invoice (invoice_id)
ON DELETE RESTRICT
ON UPDATE RESTRICT
);
CREATE TABLE donut (
donut_id INT NOT NULL,
donut_name VARCHAR(15) NULL,
description VARCHAR(30) NULL,
unit_price INT NULL,
PRIMARY KEY(donut_id)
);
http://sqlfiddle.com/#!9/36b044
I finished typing out SQL statements but now I'm getting errors codes when I run it on omega. I keep getting the invalid identifier code...
Here's what I get once I ran it in omega.
SQL>
SQL> --question 14
SQL>
SQL> SELECT to_char(Avg(ProductPrice),'99,999.99') AS Avg_Price
2 FROM Product_mys;
SELECT to_char(Avg(ProductPrice),'99,999.99') AS Avg_Price
*
ERROR at line 1:
ORA-00904: "PRODUCTPRICE": invalid identifier
These are the sql tables where the data is being pulled from
CREATE TABLE Dept_mys (
DeptID Number(3) NOT NULL,
DeptName VARCHAR(20) NOT NULL,
PRIMARY KEY (DeptID)
) ;
CREATE TABLE Commission_mys (
CommClass CHAR(1) NOT NULL,
CommRate Number(2,2) NOT NULL,
PRIMARY KEY (CommClass)
) ;
CREATE TABLE Category_mys (
CatID Number(3) NOT NULL,
catName VARCHAR(20) NOT NULL,
PRIMARY KEY (CatID)
) ;
CREATE TABLE SalesRep_mys (
SalesRepID NUMBER(4) NOT NULL,
SalesRepFName VARCHAR(20) NOT NULL,
SalesRepLName VARCHAR(20) NOT NULL,
DeptID NUMBER(3) NOT NULL,
CommClass CHAR(1) NOT NULL,
PRIMARY KEY (SalesRepID),
FOREIGN KEY (DeptID) REFERENCES Dept_mys,
FOREIGN KEY (CommClass) REFERENCES Commission_mys
) ;
CREATE TABLE Customer_mys (
CustID CHAR(5) NOT NULL,
CustFName VARCHAR(20) NOT NULL,
CustLName VARCHAR(20) NOT NULL,
CustPhone CHAR(10),
SalesRepID NUMBER(4) NOT NULL,
PRIMARY KEY (CustID),
FOREIGN KEY (SalesRepID) REFERENCES SalesRep_mys
) ;
CREATE TABLE Order_mys (
OrderID NUMBER(3) NOT NULL,
OrderDate DATE NOT NULL,
CustID CHAR(5) NOT NULL,
PRIMARY KEY (OrderID),
FOREIGN KEY (CustID) REFERENCES Customer_mys
) ;
CREATE TABLE Product_mys (
ProductID NUMBER(3) NOT NULL,
ProductName VARCHAR(30) NOT NULL,
CatID Number(3) NOT NULL,
PRIMARY KEY (ProductID),
FOREIGN KEY (CatID) REFERENCES Category_mys
) ;
CREATE TABLE OrderDetail_mys (
OrderID NUMBER(3) NOT NULL,
ProductID NUMBER(3) NOT NULL,
ProductQty NUMBER(4) NOT NULL,
ProductPrice NUMBER(6,2) NOT NULL,
PRIMARY KEY (OrderID, ProductID),
FOREIGN KEY (OrderID) REFERENCES Order_mys,
FOREIGN KEY (ProductID) REFERENCES Product_mys
) ;
Your query references Sales_Rep_mys but you create SalesRep_mys. So that's at least some of the problem.
Same with Order_Detail_mys and OrderDetail_mys
Looks like those 2 fixes should do it.