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Postgres is also unlike most other data managers in that the server can incorporate user-written code into itself through dynamic loading . By default , a text copy uses a tab ( " \ t " ) character as a delimiter . The optional INHERITS clause specifies a collection of class names from which this class automatically inherits all fields . Each trip costs an average of $ 2000 for travel , for two students . But due to the GRANT , the secretary can SELECT from the phone_number view .