Hi guys i am looking for a bit of help
i have got
create table usertable (
username varchar(128) NOT NULL CONSTRAINT USER_PK PRIMARY KEY ,
password varchar(128) NOT NULL
);
create table grouptable(
username varchar(128) NOT NULL,
groupid varchar(128) NOT NULL,
CONSTRAINT GROUP_PK PRIMARY KEY(username, groupid),
CONSTRAINT USER_FK FOREIGN KEY(username) REFERENCES usertable(username)
ON DELETE CASCADE ON UPDATE RESTRICT
);
to have a username and password to be stored into the database, what i am asking is how can i add another table called address and link it with the usertable in a many-to-one realtionship as one user could have several address, how do i go about doing this ?
Thanks guys !
EDIT
would this work ?
create table usertable (
username varchar(128) NOT NULL CONSTRAINT USER_PK PRIMARY KEY ,
password varchar(128) NOT NULL,
firstaname varchar(30) NOT NULL,
surname varchar(30) NOT NULL,
gender varchar(6) NOT NULL,
homenumber varchar(128) NOT NULL,
mobilenumber varchar(128) NOT NULL,
dob date NOT NULL,
id INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1)
);
create table grouptable(
username varchar(128) NOT NULL,
groupid varchar(128) NOT NULL,
CONSTRAINT GROUP_PK PRIMARY KEY(username, groupid),
CONSTRAINT USER_FK FOREIGN KEY(username) REFERENCES usertable(username)
ON DELETE CASCADE ON UPDATE RESTRICT
);
create table address(
username varchar(128) NOT NULL,
addressline1 varchar(128) NOT NULL,
addressline2 varchar(128) NOT NULL,
addressline3 varchar(128) NOT NULL,
country varchar(128) NOT NULL,
postcode varchar(9) NOT NULL,
CONSTRAINT USER2_FK FOREIGN KEY(username) REFERENCES usertable(username)
);
EDIT 2 :
create table usertable (
username varchar(128) NOT NULL CONSTRAINT USER_PK PRIMARY KEY,
password varchar(128) NOT NULL,
firstaname varchar(30) NOT NULL,
surname varchar(30) NOT NULL,
gender varchar(6) NOT NULL,
homenumber varchar(128) NOT NULL,
mobilenumber varchar(128) NOT NULL,
dob date NOT NULL,
id INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1)
);
create table grouptable(
username varchar(128) NOT NULL,
groupid varchar(128) NOT NULL,
CONSTRAINT GROUP_PK PRIMARY KEY(username, groupid),
CONSTRAINT USER_FK FOREIGN KEY(username) REFERENCES usertable(username)
ON DELETE CASCADE ON UPDATE RESTRICT
);
create table address(
ID NUMERIC(3) not null primary key,
username varchar(128) NOT NULL,
addressline1 varchar(128) NOT NULL,
addressline2 varchar(128) NOT NULL,
addressline3 varchar(128) NOT NULL,
country varchar(128) NOT NULL,
postcode varchar(9) NOT NULL,
CONSTRAINT USER2_FK FOREIGN KEY(username) REFERENCES usertable(username)
);
Related
My problem: I am trying to create a table named User_T in Oracle apex.
I can't get rid of this displaying error... I don't know why. I've already checked my codes a couple of times.
CREATE TABLE User_T(
IdUser NUMBER(10,0) NOT NULL,
FirstName VARCHAR2(100) NOT NULL,
LastName VARCHAR(100) NOT NULL,
Email VARCHAR(50) NOT NULL,
UserName VARCHAR(30) NOT NULL UNIQUE,
UserPassword VARCHAR2(30) NOT NULL,
CreatedAt VARCHAR2(30),
UpdatedAt VARCHAR(30),
Enabled CHAR(10) CHECK,
CONSTRAINT IdUser_PK PRIMARY KEY(IdUser)
);
You have a CHECK keyword without specifying a constraint.
Either remove it:
CREATE TABLE User_T(
IdUser NUMBER(10,0) NOT NULL,
FirstName VARCHAR2(100) NOT NULL,
LastName VARCHAR(100) NOT NULL,
Email VARCHAR(50) NOT NULL,
UserName VARCHAR(30) NOT NULL UNIQUE,
UserPassword VARCHAR2(30) NOT NULL,
CreatedAt VARCHAR2(30),
UpdatedAt VARCHAR(30),
Enabled CHAR(10), -- Remove the CHECK
CONSTRAINT IdUser_PK PRIMARY KEY(IdUser)
);
else, specify the constraint:
CREATE TABLE User_T(
IdUser NUMBER(10,0) NOT NULL,
FirstName VARCHAR2(100) NOT NULL,
LastName VARCHAR(100) NOT NULL,
Email VARCHAR(50) NOT NULL,
UserName VARCHAR(30) NOT NULL UNIQUE,
UserPassword VARCHAR2(30) NOT NULL,
CreatedAt VARCHAR2(30),
UpdatedAt VARCHAR(30),
Enabled CHAR(10) CHECK (Enabled IN ('Foo ', 'Bar ')),
CONSTRAINT IdUser_PK PRIMARY KEY(IdUser)
);
db<>fiddle here
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 know the error 150 is related to foreign keys, but i can't figure out what wrong here.
CREATE TABLE IF NOT EXISTS User(
id_user INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
nom VARCHAR(255) NOT NULL,
prenom VARCHAR(255) NOT NULL,
naissance DATE NOT NULL,
email VARCHAR(255) NOT NULL
);
CREATE TABLE IF NOT EXISTS Livre(
id_livre INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
titre VARCHAR(255) NOT NULL,
parution DATE NOT NULL,
id_edit INT NOT NULL,
id_user INT NOT NULL,
FOREIGN KEY ( id_edit)
REFERENCES Editeur(id_edit)
ON DELETE CASCADE,
FOREIGN KEY ( id_user)
REFERENCES User(id_user)
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS Publication(
id_pub INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
texte TEXT NOT NULL,
date_pub DATE NOT NULL,
titre_pub VARCHAR(255) NOT NULL,
id_livre INT NOT NULL,
id_user INT NOT NULL,
FOREIGN KEY ( id_user)
REFERENCES User(id_user)
ON DELETE CASCADE,
FOREIGN KEY (id_livre)
REFERENCES Livre(id_livre)
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS Editeur(
id_edit INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
nom VARCHAR(255) NOT NULL,
pays VARCHAR(255) NOT NULL,
adresse VARCHAR(255) NOT NULL,
tel VARCHAR(255) NOT NULL
);
The error occurs when i try to create tables Livre and Publication.
Types are the same so it doesn't seem to be the problem.
By mindful of the order in which you create the tables.
For instance, your table creation statement for Livre defines a foreign key on Editeur. But the table Editeur has not been created yet.
Adjust the create table statement ordering as required.
I've spent a while trying to firgure it but but I can't see anything that would be causing this error. I'm thinking maybe something to do with the "Unique" statement.
Msg 1767, Level 16, State 0, Line 40
Foreign key 'FK_Loan_ItemNo__0AD2A005' references invalid table
'Item'.
Here's the code if someone wants to use it to replicate problem:
CREATE DATABASE LibrarySystem10
GO
USE LibrarySystem10
GO
CREATE TABLE MemberType(
MemberTypeNo int NOT NULL,
Name varchar(50) NOT NULL,
Description varchar(250) NOT NULL,
MaxNumberLoans int NOT NULL,
MaxLoanDuration int NOT NULL
PRIMARY KEY (MemberTypeNo)
)
insert into MemberType values ('0','UnderGraduate','A student at a college or university who has not yet earned a bachelor''s or equivalent degree.','5','10')
insert into MemberType values ('1','PostGraduate','A student undertaking study after completing a first degree.','10','10')
insert into MemberType values ('2','Staff','Staff at the university','15','15')
CREATE TABLE Member(
MemberNo int NOT NULL,
MemberTypeNo int NOT NULL,
FirstName varchar(150) NOT NULL,
LastName varchar(150) NULL,
DateOfBirth varchar (200) NULL,
HouseNo int NOT NULL,
Street varchar(50) NOT NULL,
Suburb varchar(100) NOT NULL,
PostCode int NOT NULL,
EmailAddress varchar(250) NULL,
HomePhoneNo varchar(250) NULL,
MobileNo varchar(250) NULL,
MembershipStartDate varchar (200) NOT NULL,
MembershipEndDate varchar (200) NOT NULL,
MembershipStatus varchar(100) NOT NULL,
PinNo int NOT NULL
PRIMARY KEY (MemberNo)
FOREIGN KEY (MemberTypeNo)REFERENCES MemberType ON UPDATE CASCADE
)
insert into member values ('0','0','Shane','Lindsay','15-11-1992','90','fake st','FauxTon','2250','shane#hotmai.com','0243296356','0415657164','15-11-2010','15-11-2020','current','0105')
insert into member values ('1','0','Shaune','Lincoln','18-12-1992','92','faken st','FauxTone','2350','shaune27#hotmai.com','0243253357','041565757','14-12-2010','14-12-2020','deferred','0123')
insert into member values ('2','0','Sarah','richards','08-08-1990','45','Small st','Hornsby','2279','Sarah67#hotmai.com','02432567154','0416451845','01-01-2012','01-01-2022','current','0123')
CREATE TABLE Loan(
MemberNo int NOT NULL FOREIGN KEY(MemberNo) REFERENCES Member ON UPDATE CASCADE,
ItemNo int NOT NULL FOREIGN KEY(ItemNo) REFERENCES Item ON UPDATE CASCADE,
DateLoaned varchar (50) NOT NULL,
DueDate varchar (50) NOT NULL,
Status varchar(50) NOT NULL,
FinesImposed bit NOT NULL DEFAULT '0' CHECK (finesImposed IN ('0','1')) ,
Renewed bit NOT NULL DEFAULT '0' CHECK (Renewed IN ('0','1')),
UNIQUE(MemberNo,ItemNo,DateLoaned)
)
insert into Loan values ('0','0','10-10-2012','15-10-2012','loaned','0','0')
insert into Loan values ('1','0','12-10-2012','15-10-2012','loaned','0','1')
CREATE TABLE Item(
ItemNo int NOT NULL,
Title varchar(50) NOT NULL,
Subject varchar(100) NULL,
ISBN int NULL,
PhysicalDescription varchar(150) NULL,
Author varchar(75) NULL,
PRIMARY KEY (ItemNo)
)
insert into Item values ('0','Book1','IT','0501425252','Big,42pages','John Doe')
insert into Item values ('1','Book2','IT','0501425253','Big,42pages','John Doe')
CREATE TABLE ItemCopy(
ItemNo int NOT NULL,
CallNumber varchar(50) NOT NULL,
Condition varchar(50) NULL,
UNIQUE(ItemNo,CallNumber),
PRIMARY KEY (CallNumber)
)
insert into ItemCopy values ('0','0','good')
CREATE TABLE Hold(
HoldNo int NOT NULL,
MemberNo int NOT NULL FOREIGN KEY(MemberNo) REFERENCES Member ON UPDATE CASCADE,
ItemNo int NOT NULL FOREIGN KEY(ItemNo) REFERENCES Item ON UPDATE CASCADE,
DateTimeHeld datetime NOT NULL,
comments varchar(200) NULL,
Status varchar(50) NOT NULL
PRIMARY KEY (HoldNo)
)
CREATE TABLE Fine(
FineNo int NOT NULL,
MemberNo int NOT NULL FOREIGN KEY(MemberNo) REFERENCES Member ON UPDATE CASCADE,
Description varchar(50) NULL,
Amount int NOT NULL,
PRIMARY KEY (FineNo)
)
CREATE TABLE AudioRecording(
Length varchar(50) NULL,
BitRate varchar(50) NULL,
Size varchar(50) NULL
)
CREATE TABLE ItemCollection(
ItemNo int NULL,
CollectionName varchar(75) NULL
UNIQUE (ItemNo,CollectionName)
)
CREATE TABLE Collection(
CollectionName varchar(75)NOT NULL
PRIMARY KEY (CollectionName)
)
CREATE TABLE Book(
PublisherInfo varchar(150) NULL,
Edition int NULL,
Notes varchar(250) NULL,
Status varchar(50) NULL
)
CREATE TABLE Journal(
Series int NULL,
Notes varchar(250) NULL,
OtherTitles varchar(150) NULL,
PriorTitles varchar(250) NULL
)
SELECT m.FirstName, l.Status, l.DueDate
FROM Member m, Loan l
WHERE m.MemberNo = '0' AND l.MemberNo = m.MemberNo
Loan references Item, but you create Loan before you create Item. Create the Item table first.
could someone have a look at this for me, I can't seem to find why it is not working.
CREATE TABLE Person(
Person_ID int auto_increment NOT NULL,
Person_Type_ID int NOT NULL,
Create_Date datetime NOT NULL ,
Modify_Date datetime NOT NULL ,
First_Name varchar(50) NOT NULL,
Surname varchar(50) NOT NULL,
DOB date NOT NULL,
Gender char(1) NOT NULL CHECK (Gender ='f' OR Gender ='m'),
Archive char(1) NULL,
Allergies varchar(200) NOT NULL,
Dietry_Requirements varchar(200) NOT NULL,
Disabilities varchar(200) NOT NULL,
Medicine_Requirements varchar(200) NOT NULL,
username varchar (30) NOT NULL,
password varchar (30) NOT NULL,
CONSTRAINT PK_Person_ID PRIMARY KEY (Person_ID)
CONSTRAINT FK_Person_Type_ID FOREIGN KEY (Person_Type_ID)
REFERENCES Person_Type (Person_Type_ID));
You missed a comma! This should work...
CREATE TABLE Person(
Person_ID int auto_increment NOT NULL,
Person_Type_ID int NOT NULL,
Create_Date datetime NOT NULL ,
Modify_Date datetime NOT NULL ,
First_Name varchar(50) NOT NULL,
Surname varchar(50) NOT NULL,
DOB date NOT NULL,
Gender char(1) NOT NULL CHECK (Gender ='f' OR Gender ='m'),
Archive char(1) NULL,
Allergies varchar(200) NOT NULL,
Dietry_Requirements varchar(200) NOT NULL,
Disabilities varchar(200) NOT NULL,
Medicine_Requirements varchar(200) NOT NULL,
username varchar (30) NOT NULL,
password varchar (30) NOT NULL,
CONSTRAINT PK_Person_ID PRIMARY KEY (Person_ID),
CONSTRAINT FK_Person_Type_ID FOREIGN KEY (Person_Type_ID)
REFERENCES Person_Type (Person_Type_ID));