251 lines
6.3 KiB
Plaintext
251 lines
6.3 KiB
Plaintext
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<REFENTRY ID="SQL-CREATEDATABASE-1">
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<REFMETA>
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<REFENTRYTITLE>
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CREATE DATABASE
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</REFENTRYTITLE>
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<REFMISCINFO>SQL - Language Statements</REFMISCINFO>
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</REFMETA>
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<REFNAMEDIV>
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<REFNAME>
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CREATE DATABASE
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</REFNAME>
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<REFPURPOSE>
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Creates a new database
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</REFPURPOSE>
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<REFSYNOPSISDIV>
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<REFSYNOPSISDIVINFO>
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<DATE>1998-04-15</DATE>
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</REFSYNOPSISDIVINFO>
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<SYNOPSIS>
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CREATE DATABASE <REPLACEABLE CLASS="PARAMETER">name</REPLACEABLE> [WITH LOCATION = '<replaceable class="parameter">dbpath</replaceable>']
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</SYNOPSIS>
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<REFSECT2 ID="R2-SQL-CREATEDATABASE-1">
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<REFSECT2INFO>
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<DATE>1998-04-15</DATE>
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</REFSECT2INFO>
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<TITLE>
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Inputs
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</TITLE>
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<PARA>
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</PARA>
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<VARIABLELIST>
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<VARLISTENTRY>
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<TERM>
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</TERM>
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<LISTITEM>
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<PARA>
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<VARIABLELIST>
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<VARLISTENTRY>
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<TERM>
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<replaceable class="parameter">name</replaceable>
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</TERM>
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<LISTITEM>
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<PARA>
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The name of a database to create.
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</PARA>
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</LISTITEM>
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</VARLISTENTRY>
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<VARLISTENTRY>
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<TERM>
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<replaceable class="parameter">dbpath</replaceable>
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</TERM>
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<LISTITEM>
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<PARA>
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An alternate location can be specified as either an
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environment variable known to the backend server
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(e.g. '<envar>PGDATA2</envar>') or as an absolute path name
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(e.g. '<filename>/usr/local/pgsql/data</filename>').
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In either case, the location must be pre-configured
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by <command>initlocation</command>.
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</PARA>
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</LISTITEM>
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</VARLISTENTRY>
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</VARIABLELIST>
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</LISTITEM>
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</VARLISTENTRY>
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</VARIABLELIST>
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</REFSECT2>
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<REFSECT2 ID="R2-SQL-CREATEDATABASE-2">
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<REFSECT2INFO>
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<DATE>1998-04-15</DATE>
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</REFSECT2INFO>
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<TITLE>
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Outputs
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</TITLE>
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<PARA>
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</PARA>
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<VARIABLELIST>
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<VARLISTENTRY>
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<TERM>
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</TERM>
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<LISTITEM>
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<PARA>
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<VARIABLELIST>
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<VARLISTENTRY>
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<TERM>
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<ReturnValue>CREATEDB</ReturnValue>
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</TERM>
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<LISTITEM>
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<PARA>
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Message returned if the command completes successfully.
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</PARA>
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</LISTITEM>
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</VARLISTENTRY>
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<VARLISTENTRY>
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<TERM>
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<ReturnValue>WARN: createdb: database "<replaceable class="parameter">name</replaceable>" already exists.</ReturnValue>
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</TERM>
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<LISTITEM>
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<PARA>
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This occurs if <replaceable class="parameter">database</replaceable> specified already exists.
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</PARA>
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</LISTITEM>
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</VARLISTENTRY>
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<VARLISTENTRY>
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<TERM>
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<ReturnValue>ERROR: Unable to create database directory <replaceable class="parameter">directory</replaceable>
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</ReturnValue>
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</TERM>
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<LISTITEM>
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<PARA>
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There was a problem with creating the required directory; this operation will
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need permissions for the <literal>postgres</literal> user on the specified location.
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</PARA>
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</LISTITEM>
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</VARLISTENTRY>
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</variablelist>
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</LISTITEM>
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</VARLISTENTRY>
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</VARIABLELIST>
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</REFSECT2>
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</REFSYNOPSISDIV>
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<REFSECT1 ID="R1-SQL-CREATEDATABASE-1">
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<REFSECT1INFO>
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<DATE>1998-04-15</DATE>
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</REFSECT1INFO>
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<TITLE>
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Description
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</TITLE>
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<PARA>
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CREATE DATABASE creates a new PostgreSQL database.
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The creator becomes the administrator of the new database.
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</PARA>
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<REFSECT2 ID="R2-SQL-CREATEDATABASE-3">
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<REFSECT2INFO>
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<DATE>1998-04-15</DATE>
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</REFSECT2INFO>
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<TITLE>
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Notes
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</TITLE>
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<PARA>
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CREATE DATABASE statement is a PostgreSQL language extension.
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</PARA>
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<para>
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Refer to DROP DATABASE statement to remove a database.
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</para>
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</REFSECT2>
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<REFSECT1 ID="R1-SQL-CREATEDATABASE-2">
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<TITLE>
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Usage
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</TITLE>
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<PARA>
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To create a new database:
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</PARA>
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<ProgramListing>
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CREATE DATABASE lusiadas;
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</ProgramListing>
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<PARA>
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To create a new database in <filename>~/private_db</filename>:
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</PARA>
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<ProgramListing>
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$ mkdir private_db
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$ initlocation ~/private_db
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<computeroutput>Creating Postgres database system directory /home/olly/private_db/base</computeroutput>
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$ chmod a+rx private_db
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$ chmod a+rwx private_db/base
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$ psql
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<computeroutput>Welcome to the POSTGRESQL interactive sql monitor:
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Please read the file COPYRIGHT for copyright terms of POSTGRESQL
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type \? for help on slash commands
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type \q to quit
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type \g or terminate with semicolon to execute query
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You are currently connected to the database: template1
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template1=></computeroutput> <userinput>create database elsewhere with location = '/home/olly/private_db';</userinput>
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<computeroutput>CREATEDB</computeroutput>
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</ProgramListing>
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</REFSECT1>
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<REFSECT1 ID="R1-SQL-CREATEDATABASE-3">
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<TITLE>
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Bugs
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</TITLE>
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<PARA>
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Where an ordinary user cannot change the ownership of files to other users
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(which is correct from a security point of view), there is no easy way
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to give the postgres backend access to files in a database at a
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non-standard location without
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giving similar access to all users. The situation shown in the usage
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example makes <filename>/home/olly/private_db</filename> world-accessible.
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</PARA>
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<para>
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If, on the other hand, the user gets the system administrator to give
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file ownership to the <literal>postgres</literal> superuser and restrict access, he will
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then be unable to delete the <filename><replaceable>directory</replaceable>/base</filename> directory.
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</para>
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<comment>
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initlocation does not create a PG_VERSION file in the specified location.
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How will PostgreSQL handle the situation if it is upgraded to an
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incompatible database version?
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</comment>
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</refsect1>
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<REFSECT1 ID="R1-SQL-CREATEDATABASE-4">
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<TITLE>
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Compatibility
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</TITLE>
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<PARA>
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</PARA>
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<REFSECT2 ID="R2-SQL-CREATEDATABASE-4">
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<REFSECT2INFO>
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<DATE>1998-04-15</DATE>
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</REFSECT2INFO>
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<TITLE>
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SQL92
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</TITLE>
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<PARA>
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There is no <command>CREATE DATABASE</command> statement on SQL92.
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</PARA>
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<para>
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The equivalent command in standard SQL is <command>CREATE SCHEMA</command>.
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</para>
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</refsect2>
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</refsect1>
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</REFENTRY>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"../reference.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:"/usr/lib/sgml/catalog"
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sgml-local-ecat-files:nil
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End:
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-->
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