Обсуждение: Inserting all defaults

Is it possible to do an insert with no values?

e.g.

CREATE TABLE a (num INTEGER DEFAULT 1);
INSERT INTO a; or INSERT INTO a VALUES ();

I'd like to do this when a database is first created to insert the default
set of values that I have for every table e.g. a default system
configuration.

This might appear more useful like so:

CREATE TABLE config (
    config_code    SERIAL PRIMARY KEY,
    parameter_1    INTEGER DEFAULT 999,
    parameter_2    INTEGER DEFAULT 2000
);

INSERT INTO config;

CREATE TABLE device (
    device_code    SERIAL PRIMARY KEY,
    config_code    INTEGER REFERENCES config DEFAULT 1 NOT NULL,
);

Thanks,

R.

> Is it possible to do an insert with no values?

insert tablename default values;

                      - Thomas

In order to take advantage of some new hardware I had to use Linux over
FreeBSD.. I use to run my backend with the options -B 4096 -o '-S 16384' but
remember I had to modify the FreeBSD kernel to allow processes to use that
much shared memory... How would I go about doing that in Linux? I've been
out of the Linux loop for some time (obviously) -- Thanks!

-Mitch