Answers for "mysql foreign key quert"

SQL
5

drop foreign key

ALTER TABLE table_name
DROP CONSTRAINT fk_name;
Posted by: Guest on June-04-2020
2

alter table add column and foreign key mysql

ALTER TABLE database.table
  ADD COLUMN columnname INT DEFAULT(1),
  ADD FOREIGN KEY fk_name(fk_column) REFERENCES reftable(refcolumn) ON DELETE CASCADE;
Posted by: Guest on June-27-2020

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