|
postgres=#
postgres=# -- Creating a child table
postgres=#
postgres=# CREATE TABLE "authors" (
postgres(# "id" integer NOT NULL,
postgres(# "last_name" text,
postgres(# "first_name" text,
postgres(# Constraint "authors_pkey" Primary Key ("id")
postgres(# );
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "authors_pkey" for table "authors"
CREATE TABLE
postgres=#
postgres=#
postgres=# CREATE TABLE distinguished_authors (award text)
postgres-# INHERITS (authors);
CREATE TABLE
postgres=#
postgres=# INSERT INTO distinguished_authors VALUES (1809, 'G', 'T', 'Prize');
INSERT 0 1
postgres=#
postgres=# SELECT * FROM distinguished_authors;
id | last_name | first_name | award
------+-----------+------------+-------
1809 | G | T | Prize
(1 row)
postgres=#
postgres=# SELECT * FROM authors;
id | last_name | first_name
------+-----------+------------
1809 | G | T
(1 row)
postgres=#
postgres=#
postgres=# DELETE FROM ONLY authors WHERE last_name = 'G';
DELETE 0
postgres=#
postgres=# SELECT * FROM distinguished_authors;
id | last_name | first_name | award
------+-----------+------------+-------
1809 | G | T | Prize
(1 row)
postgres=#
postgres=# SELECT * FROM authors;
id | last_name | first_name
------+-----------+------------
1809 | G | T
(1 row)
postgres=#
postgres=#
postgres=#
postgres=# drop table distinguished_authors;
DROP TABLE
postgres=# drop table authors;
DROP TABLE
postgres=#
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