PostgreSQL/Table/Create Table — различия между версиями

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м (1 версия)
 
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Текущая версия на 10:14, 26 мая 2010

Create a new table by specifying the table name, along with all column names and their types

postgres=#
postgres=# -- Create a new table by specifying the table name, along with all column names and their types:
postgres=#
postgres=# CREATE TABLE weather (
postgres(#    city            varchar(80),
postgres(#    temp_lo         int,           -- low temperature
postgres(#    temp_hi         int,           -- high temperature
postgres(#    prcp            real,          -- precipitation
postgres(#    date            date
postgres(# );
CREATE TABLE
postgres=#
postgres=#
postgres=# drop table weather;
DROP TABLE
postgres=#



Creating the books table

postgres=#  -- Creating the books table
postgres=#
postgres=# CREATE TABLE books (
postgres(#               id integer UNIQUE,
postgres(#               title text NOT NULL,
postgres(#               author_id  integer,
postgres(#               subject_id integer,
postgres(#               CONSTRAINT books_id_pkey PRIMARY KEY (id));
NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "books_id_pkey" for table "books"
CREATE TABLE
postgres=#
postgres=# \d books;
       Table "public.books"
   Column   |  Type   | Modifiers
------------+---------+-----------
 id         | integer | not null
 title      | text    | not null
 author_id  | integer |
 subject_id | integer |
Indexes:
    "books_id_pkey" PRIMARY KEY, btree (id)
postgres=#
postgres=#
postgres=# drop table books;
DROP TABLE
postgres=#