how to remove foreign key constraint in sql
USE AdventureWorks2012;
GO
ALTER TABLE dbo.DocExe
DROP CONSTRAINT FK_Column_B;
GOhow to remove foreign key constraint in sql
USE AdventureWorks2012;
GO
ALTER TABLE dbo.DocExe
DROP CONSTRAINT FK_Column_B;
GOPG::ForeignKeyViolation: ERROR: update or delete on table violates foreign key constraint
has_many :comments, dependent: :delete_all - just automatically delete them when the user is deleted
has_many :comments, dependent: :destroy - like above, but call #destroy on each comment instead of just deleting directly in the db
has_many :comments, dependent: :nullify - don't delete comments when the user is deleted, just null out their user_id columnCopyright © 2021 Codeinu
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