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postgres=# -- Assign your own name for a unique constraint
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer CONSTRAINT must_be_different UNIQUE,
postgres(# name text,
postgres(# price numeric
postgres(# );
NOTICE: CREATE TABLE / UNIQUE will create implicit index "must_be_different" for table "products"
CREATE TABLE
postgres=#
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#
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