mirror of
https://github.com/postgres/postgres.git
synced 2025-07-27 12:41:57 +03:00
Meanwhile, database names with single quotes in names don't work very well
at all, and because of shell quoting rules this can't be fixed, so I put in error messages to that end. Also, calling create or drop database in a transaction block is not so good either, because the file system mysteriously refuses to roll back rm calls on transaction aborts. :) So I put in checks to see if a transaction is in progress and signal an error. Also I put the whole call in a transaction of its own to be able to roll back changes to pg_database in case the file system operations fail. The alternative location issues I posted recently were untouched, awaiting the outcome of that discussion. Other than that, this should be much more fool-proof now. The docs I cleaned up as well. Peter Eisentraut Sernanders väg 10:115
This commit is contained in:
@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_database.sgml,v 1.10 1999/12/04 04:53:15 momjian Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_database.sgml,v 1.11 1999/12/12 05:15:09 momjian Exp $
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Postgres documentation
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-->
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@ -20,7 +20,7 @@ Postgres documentation
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>1999-07-20</date>
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<date>1999-12-11</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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@ -28,7 +28,7 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable> [ WITH LOCATIO
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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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<date>1999-12-11</date>
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</refsect2info>
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<title>
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Inputs
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@ -48,7 +48,8 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable> [ WITH LOCATIO
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<term><replaceable class="parameter">dbpath</replaceable></term>
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<listitem>
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<para>
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An alternate location for the new database. See below for caveats.
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An alternate location where to store the new database in the filesystem.
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See below for caveats.
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</para>
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</listitem>
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</varlistentry>
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@ -58,7 +59,7 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable> [ WITH LOCATIO
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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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<date>1999-12-11</date>
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</refsect2info>
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<title>
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Outputs
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@ -67,36 +68,81 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable> [ WITH LOCATIO
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<variablelist>
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<varlistentry>
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<term><computeroutput>
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CREATE DATABASE
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</computeroutput></term>
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<term><computeroutput>CREATE DATABASE</computeroutput></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><computeroutput>
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WARN: createdb: database "<replaceable class="parameter">name</replaceable>" already exists.
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</computeroutput></term>
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<term><computeroutput>ERROR: user '<replaceable class="parameter">username</replaceable>' is not allowed to create/drop databases</computeroutput></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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You must have the special CREATEDB privilege to create databases.
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See <xref linkend="SQL-CREATEUSER" endterm="SQL-CREATEUSER-title">.
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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><computeroutput>
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ERROR: Unable to create database directory <replaceable class="parameter">directory</replaceable>
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</computeroutput></term>
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<term><computeroutput>ERROR: createdb: database "<replaceable class="parameter">name</replaceable>" already exists</computeroutput></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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This occurs if a database with the <replaceable class="parameter">name</replaceable>
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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><computeroutput>ERROR: Single quotes are not allowed in database names.</computeroutput></term>
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<term><computeroutput>ERROR: Single quotes are not allowed in database paths.</computeroutput></term>
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<listitem>
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<para>
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The database <replaceable class="parameter">name</replaceable> and
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<replaceable class="parameter">dbpath</replaceable> cannot contain
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single quotes. This is required so that the shell commands that
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create the database directory can execute safely.
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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><computeroutput>ERROR: The path 'xxx' is invalid.</computeroutput></term>
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<listitem>
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<para>
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The expansion of the specified <replaceable class="parameter">dbpath</replaceable>
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(see below how) failed. Check the path you entered or make sure that the
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environment variable you are referencing does exist.
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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><computeroutput>ERROR: createdb: May not be called in a transaction block.</computeroutput></term>
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<listitem>
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<para>
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If you have an explicit transaction block in progress you cannot call
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<command>CREATE DATABASE</command>. You must finish the transaction first.
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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><computeroutput>ERROR: Unable to create database directory 'xxx'.</computeroutput></term>
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<term><computeroutput>ERROR: Could not initialize database directory.</computeroutput></term>
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<listitem>
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<para>
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These are most likely related to insufficient permissions on the data
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directory, a full disk, or other file system problems. The user under
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which the database server is running, must have access to the 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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</para>
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</refsect2>
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@ -104,29 +150,40 @@ ERROR: Unable to create database directory <replaceable class="parameter">direc
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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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<date>1999-12-11</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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<command>CREATE DATABASE</command> creates a new Postgres database.
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The creator becomes the administrator of the new database.
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<command>CREATE DATABASE</command> creates a new
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<productname>PostgreSQL</productname> database.
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The creator becomes the owner of the new database.
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</para>
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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, if the server is built to
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allow it, 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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An alternate location can be specified in order to,
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for example, store the database on a different disk.
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The path must have been prepared with the <xref
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linkend="APP-INITLOCATION" endterm="APP-INITLOCATION-title">
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command.
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</para>
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<para>
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If the path contains a slash, the leading part is interpreted
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as an environment variable, which must be known to the
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server process. This way the database administrator can
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exercise control over at which locations databases can be created.
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(A customary choice is, e.g., '<envar>PGDATA2</envar>'.)
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If the server is compiled with <literal>ALLOW_ABSOLUTE_DBPATHS</literal>
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(not so by default), absolute path names, as identified by
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a leading slash
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(e.g. '<filename>/usr/local/pgsql/data</filename>'),
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are allowed as well.
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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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<date>1999-12-11</date>
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</refsect2info>
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<title>
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Notes
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@ -136,7 +193,11 @@ ERROR: Unable to create database directory <replaceable class="parameter">direc
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language extension.
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</para>
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<para>
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Use <command>DROP DATABASE</command> to remove a database.
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Use <xref linkend="SQL-DROPDATABASE" endterm="SQL-DROPDATABASE-title"> to remove a database.
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</para>
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<para>
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The program <xref linkend="APP-CREATEDB" endterm="APP-CREATEDB-title"> is a
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shell script wrapper around this command, provided for convenience.
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</para>
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<para>
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@ -183,16 +244,16 @@ comment from Olly; response from Thomas...
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<prompt>$</prompt> <userinput>initlocation ~/private_db</userinput>
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<computeroutput>Creating Postgres database system directory /home/olly/private_db/base</computeroutput>
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<prompt>$</prompt> <userinput>psql olly</userinput>
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<computeroutput>Welcome to psql, the PostgreSQL interactive terminal.
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<prompt>$</prompt> <userinput>psql olly</userinput>
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<computeroutput>Welcome to psql, the PostgreSQL interactive terminal.
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(Please type \copyright to see the distribution terms of PostgreSQL.)
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Type \h for help with SQL commands,
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\? for help on internal slash commands,
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\q to quit,
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\g or terminate with semicolon to execute query.
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<prompt>olly=></prompt></computeroutput> <userinput>create database elsewhere with location = '/home/olly/private_db';</userinput>
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<computeroutput>CREATE DATABASE</computeroutput>
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<prompt>olly=></prompt></computeroutput> <userinput>CREATE DATABASE elsewhere WITH LOCATION = '/home/olly/private_db';</userinput>
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<computeroutput>CREATE DATABASE</computeroutput>
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</programlisting>
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</para>
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</refsect1>
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@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_database.sgml,v 1.8 1999/12/04 04:53:15 momjian Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_database.sgml,v 1.9 1999/12/12 05:15:09 momjian Exp $
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Postgres documentation
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-->
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@ -15,12 +15,12 @@ Postgres documentation
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DROP DATABASE
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</refname>
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<refpurpose>
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Destroys an existing database
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Removes an existing database
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</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>1999-07-20</date>
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<date>1999-12-11</date>
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</refsynopsisdivinfo>
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<synopsis>
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DROP DATABASE <replaceable class="PARAMETER">name</replaceable>
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@ -28,7 +28,7 @@ DROP DATABASE <replaceable class="PARAMETER">name</replaceable>
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<refsect2 id="R2-SQL-DROPDATABASE-1">
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<refsect2info>
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<date>1998-04-15</date>
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<date>1999-12-11</date>
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</refsect2info>
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<title>
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Inputs
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@ -49,7 +49,7 @@ DROP DATABASE <replaceable class="PARAMETER">name</replaceable>
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<refsect2 id="R2-SQL-DROPDATABASE-2">
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<refsect2info>
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<date>1998-04-15</date>
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<date>1999-12-11</date>
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</refsect2info>
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<title>
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Outputs
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@ -57,36 +57,86 @@ DROP DATABASE <replaceable class="PARAMETER">name</replaceable>
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<para>
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<variablelist>
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<varlistentry>
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<term><computeroutput>
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DROP DATABASE
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</computeroutput></term>
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<term><computeroutput>DROP DATABASE</computeroutput></term>
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<listitem>
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<para>
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This message is returned if the command is successful.
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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><computeroutput>
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WARN: destroydb: database "<replaceable class="parameter">name</replaceable>" does not exist.
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</computeroutput></term>
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<term><computeroutput>ERROR: user '<replaceable class="parameter">username</replaceable>' is not allowed to create/drop databases</computeroutput></term>
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<listitem>
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<para>
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You must have the special CREATEDB privilege to drop databases.
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See <xref linkend="SQL-CREATEUSER" endterm="SQL-CREATEUSER-title">.
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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><computeroutput>ERROR: dropdb: cannot be executed on the template database</computeroutput></term>
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<listitem>
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<para>
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The <literal>template1</literal> database cannot be removed. It's not in
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your interest.
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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><computeroutput>ERROR: dropdb: cannot be executed on an open database</computeroutput></term>
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<listitem>
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<para>
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You cannot be connected to the the database your are about to remove.
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Instead, you could connect to <literal>template1</literal> or any other
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database and run this command again.
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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><computeroutput>ERROR: dropdb: database '<replaceable class="parameter">name</replaceable>' does not exist</computeroutput></term>
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<listitem>
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<para>
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This message occurs if the specified database does not exist.
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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><computeroutput>
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ERROR: destroydb cannot be executed on an open database
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</computeroutput></term>
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<term><computeroutput>ERROR: dropdb: database '<replaceable class="parameter">name</replaceable>' is not owned by you</computeroutput></term>
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<listitem>
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<para>
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This message occurs if the specified database does not exist.
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You must be the owner of the database. Being the owner usually means that
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you created it as well.
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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><computeroutput>ERROR: dropdb: May not be called in a transaction block.</computeroutput></term>
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<listitem>
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<para>
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You must finish the transaction in progress before you can call this command.
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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><computeroutput>NOTICE: The database directory 'xxx' could not be removed.</computeroutput></term>
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<listitem>
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<para>
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The database was dropped (unless other error messages came up), but the
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directory where the data is stored could not be removed. You must delete
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it manually.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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@ -94,7 +144,7 @@ WARN: destroydb: database "<replaceable class="parameter">name</replaceable>" do
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<refsect1 id="R1-SQL-DROPDATABASE-1">
|
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<refsect1info>
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||||
<date>1998-04-15</date>
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<date>1999-12-11</date>
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</refsect1info>
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||||
<title>
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Description
|
||||
@ -102,23 +152,23 @@ WARN: destroydb: database "<replaceable class="parameter">name</replaceable>" do
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<para>
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<command>DROP DATABASE</command> removes the catalog entries for an existing
|
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database and deletes the directory containing the data.
|
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It can only be executed by the database administrator
|
||||
(See the <command>CREATE DATABASE</command> command for details).
|
||||
It can only be executed by the database owner (usually the user that created
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it).
|
||||
</para>
|
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|
||||
<refsect2 id="R2-SQL-DROPDATABASE-3">
|
||||
<refsect2info>
|
||||
<date>1998-04-15</date>
|
||||
<date>1999-12-11</date>
|
||||
</refsect2info>
|
||||
<title>
|
||||
Notes
|
||||
</title>
|
||||
|
||||
<para>
|
||||
This query cannot be executed while connected to the target
|
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database. Thus, it might be more convenient to use
|
||||
<xref linkend="app-dropdb" endterm="app-dropdb-title">
|
||||
from the shell instead.
|
||||
This command cannot be executed while connected to the target
|
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database. Thus, it might be more convenient to use the shell
|
||||
script <xref linkend="app-dropdb" endterm="app-dropdb-title">,
|
||||
which is a wrapper around this command, instead.
|
||||
</para>
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|
||||
<para>
|
||||
|
Reference in New Issue
Block a user