Duplicate Key Value Violates Unique Constraint Already Exists

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Hi, when creating a column of type geography, and declaring it as unique, I can't insert two rows with similar. ('POINT(1 2)'); ERROR: duplicate key value violates unique constraint "test_geom_key" DETAIL: Key. already exists. postgis20=#.

. this exception ("IntegrityError: duplicate key value violates unique constraint. better unless the inserted set is huge and most of the values already exists.

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Composite Primary Keys Ah. primary keys. such a topic! When discussing what columns to define as a primary key in your data models, two large points always tend.

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May 13, 2015. duplicate key value violates unique constraint "app_group_name_key" DETAIL: Key (name)=('ADMIN') already exists. In our example, creating.

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Dec 4, 2015. due to: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint. 26u30231306805) already exists.

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Jun 12, 2015. Hello, I have got error: duplicate key value violates unique constraint " auth_user_username_key"; DETAIL: Key (username)=(Maxim) already.

. with error: PG::Error: ERROR: duplicate key value violates unique constraint. DETAIL: Key (cp_id)=(ff80808155e4aaf80155e4d7e01207b8) already exists.

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