mysql drop table cascade
SET FOREIGN_KEY_CHECKS = 0;
drop table if exists <your_1st_table>;
drop table if exists <your_2nd_table>;
SET FOREIGN_KEY_CHECKS = 1;
mysql drop table cascade
SET FOREIGN_KEY_CHECKS = 0;
drop table if exists <your_1st_table>;
drop table if exists <your_2nd_table>;
SET FOREIGN_KEY_CHECKS = 1;
sql cascade delete sql
ALTER TABLE dbo.T2
DROP CONSTRAINT FK_T1_T2 -- or whatever it's called
ALTER TABLE dbo.T2
ADD CONSTRAINT FK_T1_T2_Cascade
FOREIGN KEY (EmployeeID) REFERENCES dbo.T1(EmployeeID) ON DELETE CASCADE
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