插入期间错误 1452“外键约束失败”是什么意思？

Question

So I am trying to add information to a table in phpMyAdmin, but it will not let me 'add or update a child row' with error code #1452.

INSERT INTO tblBooking (BookingRef, AppRef, BookingDate, TableNo, Verified, VerifyStaffID, bPassword)

VALUES ('1', '1', '2021-03-05', 'Table 1', 'Y', '2', 'Password123'),
('2', '1', '21-01-07', 'Table 2', 'N', '3', 'Chain'),
('3', '2', '20-11-02', 'Table 3', 'Y', '1', 'aSecret'),
('4', '3', '20-12-06', 'Table 2', 'Y', '4', 'Pedal')

I get this error:[error description]

Thanks in advance.

Answer 1

MYSQL is complaining about a FK that doesn't exists in the parent table, so in your case one or more than one of the VerifyStaffID values ( 1, 3, 4) doesn't exists in the parent table (tblstaff)