mysql modify foreign key
-- 2 Step process
ALTER TABLE tbl_name_1 DROP FOREIGN KEY fk_name;
ALTER TABLE tbl_name_1 ADD FOREIGN KEY fk_name(fk_col)
REFERENCES tbl_name_2(pk_name) ON DELETE RESTRICT;
-- Use to find the name of the FOREIGN KEY
SHOW CREATE TABLE tbl_name;mysql alter add foreign key
ALTER TABLE ordenes ADD ticket VARCHAR(50) NOT NULL;
ALTER TABLE ordenes ADD CONSTRAINT fk_ticket FOREIGN KEY (ticket) REFERENCES tickets(ticket);Copyright © 2021 Codeinu
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