add constraint fk
ALTER TABLE Orders
ADD CONSTRAINT FK_PersonOrder
FOREIGN KEY (PersonID) REFERENCES Persons(PersonID);
add constraint fk
ALTER TABLE Orders
ADD CONSTRAINT FK_PersonOrder
FOREIGN KEY (PersonID) REFERENCES Persons(PersonID);
mysql remove foreign key constraint
ALTER TABLE jobs DROP FOREIGN KEY constraint_name
drop all foreign key constraints mysql
SET foreign_key_checks = 0;
drop foreign key mysql
ALTER TABLE table_name DROP FOREIGN KEY constraint_name
how delete foreign key in mysql
ALTER TABLE Orders
DROP FOREIGN KEY FK_PersonOrder;
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