/usr/man2/cat.l/create_schema.l.Z

NAME

       CREATE SCHEMA - define a new schema

SYNOPSIS

       CREATE SCHEMA schemaname [ AUTHORIZATION username ] [ schema_element [ ... ] ]
       CREATE SCHEMA AUTHORIZATION username [ schema_element [ ... ] ]

DESCRIPTION

       CREATE  SCHEMA  enters  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). A CRE-
       ATE command specifying an unqualified object name creates the object 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 cre-
              ated 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;

COMPATIBILITY

       The  SQL  standard  allows  a  DEFAULT  CHARACTER  SET clause in CREATE
       SCHEMA, as well as more subcommand types than are presently accepted by
       PostgreSQL.

       The  SQL  standard  specifies that the subcommands in CREATE SCHEMA may
       appear in any order. The present  PostgreSQL  implementation  does  not
       handle all cases of forward references in subcommands; it may sometimes
       be necessary to reorder the subcommands in order to avoid forward  ref-
       erences.

       According  to  the  SQL standard, the owner of a schema always owns all
       objects within it. PostgreSQL allows schemas to contain  objects  owned
       by  users  other  than  the  schema  owner. This can happen only if the
       schema owner grants the CREATE privilege on his schema to someone else.

SEE ALSO

       ALTER SCHEMA [alter_schema(l)], DROP SCHEMA [drop_schema(l)]

SQL - Language Statements         2005-11-05                   CREATE SCHEMA()