referntial integrity issue with two tables cant delete a record





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So I am trying to delete a record from customers table. I would assume it's a referential integrity issue, however I don't really see what is wrong with it. Could anyone shed some light? Please and Thanks. Error Message below



 DELETE FROM customers
WHERE customer_id = 1


table structures:



    CREATE TABLE  payment_details  (
paytype_id varchar(10),
card_no int(8) NOT NULL,
customer_id int(50) NOT NULL,
CVV int(3) NOT NULL,
card_type ENUM ('Visa', 'Amex', 'American Express', 'Mastercard') NOT NULL,
expiry_date DATE NOT NULL,
PRIMARY KEY(paytype_id),
KEY customer_idfk1 (customer_id),
CONSTRAINT customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers (customer_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


and



CREATE TABLE  customers  (
customer_id int(50) NOT NULL AUTO_INCREMENT,
fname varchar(20) NOT NULL,
lname varchar(20) NOT NULL,
dateOfBirth date NOT NULL,
address varchar(30) NOT NULL,
city varchar(20) NOT NULL,
county ENUM('Armagh','Carlow','Cavan','Clare','Cork','Derry','Donegal','Down','Dublin','Fermanagh','Galway','Kerry','Kildare','Kilkenny','Laois','Leitrim','Limerick','Longford','Louth','Mayo','Meath','Monaghan','Offaly','Roscommon','Sligo','Tipperary','Tyrone','Waterford','Westmeath','Wexford','Wicklow') NOT NULL,
phone int(10) NOT NULL,
email varchar(20) NOT NULL,
payment_method ENUM ('Visa', 'Amex', 'Cash', 'American Express', 'Mastercard') NOT NULL,
valid_licence varchar(5) NOT NULL,
status varchar(10),
PRIMARY KEY (customer_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;



error - #1451 - Cannot delete or update a parent row: a foreign key
constraint fails (g00337857abu.payment_details, CONSTRAINT
customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers
(customer_id))










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    So I am trying to delete a record from customers table. I would assume it's a referential integrity issue, however I don't really see what is wrong with it. Could anyone shed some light? Please and Thanks. Error Message below



     DELETE FROM customers
    WHERE customer_id = 1


    table structures:



        CREATE TABLE  payment_details  (
    paytype_id varchar(10),
    card_no int(8) NOT NULL,
    customer_id int(50) NOT NULL,
    CVV int(3) NOT NULL,
    card_type ENUM ('Visa', 'Amex', 'American Express', 'Mastercard') NOT NULL,
    expiry_date DATE NOT NULL,
    PRIMARY KEY(paytype_id),
    KEY customer_idfk1 (customer_id),
    CONSTRAINT customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers (customer_id)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;


    and



    CREATE TABLE  customers  (
    customer_id int(50) NOT NULL AUTO_INCREMENT,
    fname varchar(20) NOT NULL,
    lname varchar(20) NOT NULL,
    dateOfBirth date NOT NULL,
    address varchar(30) NOT NULL,
    city varchar(20) NOT NULL,
    county ENUM('Armagh','Carlow','Cavan','Clare','Cork','Derry','Donegal','Down','Dublin','Fermanagh','Galway','Kerry','Kildare','Kilkenny','Laois','Leitrim','Limerick','Longford','Louth','Mayo','Meath','Monaghan','Offaly','Roscommon','Sligo','Tipperary','Tyrone','Waterford','Westmeath','Wexford','Wicklow') NOT NULL,
    phone int(10) NOT NULL,
    email varchar(20) NOT NULL,
    payment_method ENUM ('Visa', 'Amex', 'Cash', 'American Express', 'Mastercard') NOT NULL,
    valid_licence varchar(5) NOT NULL,
    status varchar(10),
    PRIMARY KEY (customer_id)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;



    error - #1451 - Cannot delete or update a parent row: a foreign key
    constraint fails (g00337857abu.payment_details, CONSTRAINT
    customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers
    (customer_id))










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      So I am trying to delete a record from customers table. I would assume it's a referential integrity issue, however I don't really see what is wrong with it. Could anyone shed some light? Please and Thanks. Error Message below



       DELETE FROM customers
      WHERE customer_id = 1


      table structures:



          CREATE TABLE  payment_details  (
      paytype_id varchar(10),
      card_no int(8) NOT NULL,
      customer_id int(50) NOT NULL,
      CVV int(3) NOT NULL,
      card_type ENUM ('Visa', 'Amex', 'American Express', 'Mastercard') NOT NULL,
      expiry_date DATE NOT NULL,
      PRIMARY KEY(paytype_id),
      KEY customer_idfk1 (customer_id),
      CONSTRAINT customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers (customer_id)
      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;


      and



      CREATE TABLE  customers  (
      customer_id int(50) NOT NULL AUTO_INCREMENT,
      fname varchar(20) NOT NULL,
      lname varchar(20) NOT NULL,
      dateOfBirth date NOT NULL,
      address varchar(30) NOT NULL,
      city varchar(20) NOT NULL,
      county ENUM('Armagh','Carlow','Cavan','Clare','Cork','Derry','Donegal','Down','Dublin','Fermanagh','Galway','Kerry','Kildare','Kilkenny','Laois','Leitrim','Limerick','Longford','Louth','Mayo','Meath','Monaghan','Offaly','Roscommon','Sligo','Tipperary','Tyrone','Waterford','Westmeath','Wexford','Wicklow') NOT NULL,
      phone int(10) NOT NULL,
      email varchar(20) NOT NULL,
      payment_method ENUM ('Visa', 'Amex', 'Cash', 'American Express', 'Mastercard') NOT NULL,
      valid_licence varchar(5) NOT NULL,
      status varchar(10),
      PRIMARY KEY (customer_id)
      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;



      error - #1451 - Cannot delete or update a parent row: a foreign key
      constraint fails (g00337857abu.payment_details, CONSTRAINT
      customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers
      (customer_id))










      share














      So I am trying to delete a record from customers table. I would assume it's a referential integrity issue, however I don't really see what is wrong with it. Could anyone shed some light? Please and Thanks. Error Message below



       DELETE FROM customers
      WHERE customer_id = 1


      table structures:



          CREATE TABLE  payment_details  (
      paytype_id varchar(10),
      card_no int(8) NOT NULL,
      customer_id int(50) NOT NULL,
      CVV int(3) NOT NULL,
      card_type ENUM ('Visa', 'Amex', 'American Express', 'Mastercard') NOT NULL,
      expiry_date DATE NOT NULL,
      PRIMARY KEY(paytype_id),
      KEY customer_idfk1 (customer_id),
      CONSTRAINT customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers (customer_id)
      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;


      and



      CREATE TABLE  customers  (
      customer_id int(50) NOT NULL AUTO_INCREMENT,
      fname varchar(20) NOT NULL,
      lname varchar(20) NOT NULL,
      dateOfBirth date NOT NULL,
      address varchar(30) NOT NULL,
      city varchar(20) NOT NULL,
      county ENUM('Armagh','Carlow','Cavan','Clare','Cork','Derry','Donegal','Down','Dublin','Fermanagh','Galway','Kerry','Kildare','Kilkenny','Laois','Leitrim','Limerick','Longford','Louth','Mayo','Meath','Monaghan','Offaly','Roscommon','Sligo','Tipperary','Tyrone','Waterford','Westmeath','Wexford','Wicklow') NOT NULL,
      phone int(10) NOT NULL,
      email varchar(20) NOT NULL,
      payment_method ENUM ('Visa', 'Amex', 'Cash', 'American Express', 'Mastercard') NOT NULL,
      valid_licence varchar(5) NOT NULL,
      status varchar(10),
      PRIMARY KEY (customer_id)
      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;



      error - #1451 - Cannot delete or update a parent row: a foreign key
      constraint fails (g00337857abu.payment_details, CONSTRAINT
      customer_idfk1 FOREIGN KEY (customer_id) REFERENCES customers
      (customer_id))








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      asked 8 mins ago









      GrubertusinoGrubertusino

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