CREATE TABLE Customer
(
CustomerID NUMBER NOT NULL,
AccountID NUMBER(10) NOT NULL,
CustomerType VARCHAR(10) NOT NULL,
CustomerStatus VARCHAR(10) NOT NULL,
CONSTRAINT customer_pk PRIMARY KEY (CustomerID),
CONSTRAINT check_customer_status CHECK(CustomerStatus IN ('Ineligible', 'Eligible')),
CONSTRAINT check_customer_type CHECK(CustomerType IN ('NonResident', 'Residential'))
);
Alter table CUSTOMER add CONSTRAINT res_customer_type UNIQUE (CustomerID, CustomerType)
CREATE TABLE nonresidential
(
CustomerID NUMBER NOT NULL,
CustomerType VARCHAR(10) NOT NULL,
BusinessName VARCHAR(10) NOT NULL,
ABNNumber NUMBER(10),
Email VARCHAR(35),
CONSTRAINT pk_nrtable PRIMARY KEY (CustomerID),
CONSTRAINT nonres_type CHECK (CustomerType = 'nonresident'),
CONSTRAINT res_customer_type UNIQUE (CustomerID, CustomerType) REFERENCES Customer(CustomerID, CustomerType)
);
The last line keeps coming up as missing parenthesis (around the references line along the unique constraint). I'd like to specify the unique constraint to create a subtype table under customer.
P.S I'm using oracle sql, thanks
You use the Unique keyword where you should use the Foreign key keyword.
CONSTRAINT res_customer_type UNIQUE (CustomerID, CustomerType) REFERENCES Customer(CustomerID, CustomerType)
should be
CONSTRAINT res_customer_type FOREIGN KEY (CustomerID, CustomerType) REFERENCES Customer(CustomerID, CustomerType)
Related
I am trying to create table but it shows error, "ORA-00907: missing right parenthesis."
CREATE TABLE member
(member_id NUMBER(10)
CONSTRAINT member_member_id_pk PRIMARY KEY,
last_name VARCHAR2(25)
CONSTRAINT member_last_name_nn NOT NULL,
first_name VARCHAR2(25),
address VARCHAR2(100),
city VARCHAR2(30),
phone VARCHAR2(15),
join_date DATE DEFAULT SYSDATE
CONSTRAINT member_join_date_nn NOT NULL);
CREATE TABLE title
(title_id NUMBER(10)
CONSTRAINT title_title_id_pk PRIMARY KEY,
title VARCHAR2(60)
CONSTRAINT title_title_nn NOT NULL,
description VARCHAR2(400)
CONSTRAINT title_description_nn NOT NULL,
rating VARCHAR2(4)
CONSTRAINT title_rating_ck CHECK
(rating IN ('G', 'PG', 'R', 'NC17', 'NR')),
category VARCHAR2(20),
CONSTRAINT title_category_ck CHECK
(category IN ('DRAMA', 'COMEDY', 'ACTION',
'CHILD', 'SCIFI', 'DOCUMENTARY')),
release_date DATE);
CREATE TABLE title_copy
(copy_id NUMBER(10),
title_id NUMBER(10)
CONSTRAINT title_copy_title_if_fk REFERENCES title(title_id),
status VARCHAR2(15)
CONSTRAINT title_copy_status_nn NOT NULL
CONSTRAINT title_copy_status_ck CHECK (status IN
('AVAILABLE', 'DESTROYED','RENTED', 'RESERVED')),
CONSTRAINT title_copy_copy_id_title_id_ pk
PRIMARY KEY (copy_id, title_id));
First two tables were successfully created, the third one 'title_copy' shows error at line 10 which is PRIMARY KEY (copy_id, title_id));
Replace..:
[...]
CONSTRAINT title_copy_status_ck CHECK (status IN
('AVAILABLE', 'DESTROYED','RENTED', 'RESERVED')),
CONSTRAINT title_copy_copy_id_title_id_ pk
PRIMARY KEY (copy_id, title_id));
... by:
[...]
CONSTRAINT title_copy_status_ck CHECK (status IN
('AVAILABLE', 'DESTROYED','RENTED', 'RESERVED')),
CONSTRAINT title_copy_copy_id_title_id_pk
PRIMARY KEY (copy_id, title_id));
Note a removed space.
I am currently getting the following error when trying to add to one of my tables:
Error adding record: FOREIGN KEY constraint failed: (INSERT INTO Stock(StockID,ItemName,MinAmountRequired,AmountInStock,Order? (Yes/No),DataLastUpdated,OrderNumber,SupplierRefrence,PurchaseID`) VALUES (1,",0,0,",",0,0,0);)
Currently, This is how I have my tables set up:
Stock
CREATE TABLE Stock (
StockID INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
ItemName TEXT NOT NULL,
MinAmountRequired INTEGER NOT NULL,
AmountInStock INTEGER NOT NULL,
Order? (Yes/No) TEXT NOT NULL,
DataLastUpdated TEXT NOT NULL,
OrderNumber INTEGER NOT NULL UNIQUE,
SupplierReference INTEGER NOT NULL,
PurchaseID INTEGER NOT NULL UNIQUE,
FOREIGN KEY(PurchaseID) REFERENCES Purchase(PurchaseID),
FOREIGN KEY(OrderNumber) REFERENCES Orders(OrderNumber),
FOREIGN KEY(SupplierReference) REFERENCES Supplier(SupplierReference));
Orders
CREATE TABLE Orders (
OrderNumber INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
CustomerReferenceNumber INTEGER NOT NULL UNIQUE,
OrderDate TEXT NOT NULL,
ItemName TEXT NOT NULL UNIQUE);
Suppliers
CREATE TABLE Supplier (
SupplierReference INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
Name TEXT NOT NULL UNIQUE,
Address TEXT NOT NULL UNIQUE,
ContactNumber INTEGER NOT NULL UNIQUE);
Purchases
CREATE TABLE Purchase (
PurchaseID INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
Date TEXT NOT NULL,
AmountSpent REAL NOT NULL);
You have defined these foreign keys in table Stock:
FOREIGN KEY(PurchaseID) REFERENCES Purchase(PurchaseID),
FOREIGN KEY(OrderNumber) REFERENCES Orders(OrderNumber),
FOREIGN KEY(SupplierReference) REFERENCES Supplier(SupplierReference)
meaning that the values in columns PurchaseID, OrderNumber, SupplierReference need to reference values in columns of the tables Purchase, Orders and Supplier.
But you want to store 0 to all of these columns which I'm sure that is not the value of any of the referenced columns, since these referenced columns are defined as
PRIMARY KEY AUTOINCREMENT
and so their values are > 0.
Pass valid values that do exist in these 3 tables and the statement will execute succesfully.
CREATE TABLE IF NOT EXISTS type (
tid INTEGER NOT NULL,
uuid VARCHAR NOT NULL,
name VARCHAR NOT NULL,
CONSTRAINT PK PRIMARY KEY (tid),
CONSTRAINT UNQ_0 UNIQUE (uuid),
CONSTRAINT UNQ_1 UNIQUE (name)
);
CREATE INDEX IDX_type_0 ON type (tid,uuid,name);
CREATE TABLE IF NOT EXISTS object (
oid VARCHAR NOT NULL,
timestamp VARCHAR NOT NULL,
tid INTEGER NOT NULL,
CONSTRAINT FK_tid FOREIGN KEY (tid) REFERENCES type(tid) ON UPDATE CASCADE ON DELETE CASCADE,
CONSTRAINT UNQ_0 UNIQUE (oid)
);
CREATE INDEX IDX_object_0 ON object (oid,timestamp,tid);
CREATE TABLE IF NOT EXISTS object_user_owner (
uid INTEGER NOT NULL,
oid VARCHAR NOT NULL,
CONSTRAINT FK_uid FOREIGN KEY (uid) REFERENCES user(uid) ON UPDATE CASCADE ON DELETE CASCADE,
CONSTRAINT FK_oid FOREIGN KEY (oid) REFERENCES object(oid) ON UPDATE CASCADE ON DELETE CASCADE,
CONSTRAINT UNQ_0 UNIQUE (oid,uid)
);
CREATE INDEX IDX_object_user_owner_0 ON object_user_owner (uid,oid);
CREATE TABLE IF NOT EXISTS user (
uid INTEGER NOT NULL,
uuid VARCHAR NOT NULL,
name VARCHAR NOT NULL,
password VARCHAR NOT NULL,
salt VARCHAR NOT NULL,
timestamp VARCHAR NOT NULL,
lastaccess VARCHAR NOT NULL,
CONSTRAINT PK PRIMARY KEY (uid),
CONSTRAINT UNQ_0 UNIQUE (uuid),
CONSTRAINT UNQ_1 UNIQUE (name)
);
CREATE INDEX IDX_user_0 ON user (uid,uuid,name);
The above three sqlite3 tables contain foreign keys. The problem is the deletion of a key in the upper table type. When I try do delete I get 'FOREIGN KEY constraint failed' Error. Deleting a from the lowest table object_user_owner before deleting a type works. I think sqlite does not check any recursive cascade constraints. Does anyone have experienced this too or is anything wrong with my design?
I want to use many foreign keys in one table on sqlite.
But it makes just one. how can I do it?
CREATE TABLE STORES(
SId INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
SName TEXT NOT NULL
)
CREATE TABLE CITY(
CId INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
CName TEXT NOT NULL
)
CREATE TABLE PRODUCTS(
PId INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
PName TEXT NOT NULL,
Price REAL NOT NULL
)
CREATE TABLE STORE_CITY(
CId INTEGER REFERENCES CITY(CId) NOT NULL,
SId INTEGER REFERENCES STORES(SId) NOT NULL,
PId INTEGER REFERENCES PRODUCTS(PId)
)
Define the columns first, THEN make them foreign keys.
CREATE TABLE STORE_CITY(
CId INTEGER,
SId INTEGER,
PId INTEGER,
FOREIGN KEY (CId) REFERENCES CITY(CId) NOT NULL,
FOREIGN KEY (SId) REFERENCES STORES(SId) NOT NULL,
FOREIGN KEY (PId) REFERENCES PRODUCTS(PId)
)
I have two tables Cal and EEL
I want to use the primary key of cal that is Cal_id as the foreign key for EEl
Here's what I tried.
Create table ELL
(course_code varcahr2(10) Constraints pk_course_code Primary Key,
Course_Title varchar2(30),
cal2_idnumber not null,
Constraint fk_cal2 Foreign Key (cal_id) References cal_id(cal2_id)
)
but it shows error at line 6 Ora-00904 "Cal_ID" invalid character
can someone tell me how to do this
ALTER TABLE table_name
add CONSTRAINT constraint_name
FOREIGN KEY (column1, column2, ... column_n)
REFERENCES parent_table (column1, column2, ... column_n);
Not difficult, here below an example:
CREATE TABLE supplier
( supplier_id numeric(10) not null,
supplier_name varchar2(50) not null,
contact_name varchar2(50),
CONSTRAINT supplier_pk PRIMARY KEY (supplier_id)
);
CREATE TABLE products
( product_id numeric(10) not null,
supplier_id numeric(10) not null,
CONSTRAINT fk_supplier
FOREIGN KEY (supplier_id)
REFERENCES supplier(supplier_id)
);
References cal_id(cal2_id) -- call_id is not your table name.
Instead of above code you can use as below.
References parent_table_name(cal2_id)
Constraint fk_cal_id2 Foreign Key (cal2_id) References cal(cal_id)
----------- constraint name (col in EEL) parent table name(parent table column name)