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The INSERT statement is used to populate a class with
instances:
INSERT INTO weather
VALUES ('San Francisco', 46, 50, 0.25, '11/27/1994');
You can also use the COPY command to perform load large
amounts of data from flat (ASCII) files.
This is usually faster because the data is read (or written) as a
single atomic
transaction directly to or from the target table. An example would be:
COPY weather FROM '/home/user/weather.txt'
USING DELIMITERS '|';
where the path name for the source file must be available to the
backend server
machine, not the client, since the backend server reads the file directly.
