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Postgresql primary key

Postgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary key
Postgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary key
Postgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary key
Postgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary key
Postgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary keyPostgresql primary key