CREATE SCHEMANameCREATE SCHEMA -- define a new schema SynopsisCREATE SCHEMA schemaname [ AUTHORIZATION username ] [ schema_element [ ... ] ]
CREATE SCHEMA AUTHORIZATION username [ schema_element [ ... ] ] Description CREATE SCHEMA will enter a new schema
into the current database.
The schema name must be distinct from the name of any existing schema
in the current database.
A schema is essentially a namespace:
it contains named objects (tables, data types, functions, and operators)
whose names may duplicate those of other objects existing in other
schemas. Named objects are accessed either by "qualifying"
their names with the schema name as a prefix, or by setting a search
path that includes the desired schema(s). Unqualified objects are
created in the current schema (the one at the front of the search path,
which can be determined with the function current_schema ).
Optionally, CREATE SCHEMA can include subcommands
to create objects within the new schema. The subcommands are treated
essentially the same as separate commands issued after creating the
schema, except that if the AUTHORIZATION clause is used,
all the created objects will be owned by that user.
Parameters- schemaname
The name of a schema to be created. If this is omitted, the user name
is used as the schema name. The name cannot
begin with pg_, as such names
are reserved for system schemas.
- username
The name of the user who will own the schema. If omitted,
defaults to the user executing the command. Only superusers
may create schemas owned by users other than themselves.
- schema_element
An SQL statement defining an object to be created within the
schema. Currently, only CREATE
TABLE, CREATE VIEW, CREATE
INDEX, CREATE SEQUENCE, CREATE
TRIGGER and GRANT are accepted as clauses
within CREATE SCHEMA. Other kinds of objects may
be created in separate commands after the schema is created.
Notes To create a schema, the invoking user must have the
CREATE privilege for the current database.
(Of course, superusers bypass this check.)
Examples Create a schema:
CREATE SCHEMA myschema;
Create a schema for user joe; the schema will also be
named joe:
CREATE SCHEMA AUTHORIZATION joe;
Create a schema and create a table and view within it:
CREATE SCHEMA hollywood
CREATE TABLE films (title text, release date, awards text[])
CREATE VIEW winners AS
SELECT title, release FROM films WHERE awards IS NOT NULL;
Notice that the individual subcommands do not end with semicolons.
The following is an equivalent way of accomplishing the same result:
CREATE SCHEMA hollywood;
CREATE TABLE hollywood.films (title text, release date, awards text[]);
CREATE VIEW hollywood.winners AS
SELECT title, release FROM hollywood.films WHERE awards IS NOT NULL;
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