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nix1947/gist:56e66d1b9d9043e7366ec5f452f64baf

Created September 23, 2021 01:51
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unique column with multiple column in mysql. (Useful for one to one relation)
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gistfile1.txt
-- One to one relation between user_order and shipping_address table.
create table user_order ADD UNIQUE index("id", "shipping_address_id");
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