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Postgres documentation
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<refentry id="SQL-DROPDATABASE">
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<refmeta>
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<refentrytitle id="SQL-DROPDATABASE-TITLE">
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DROP DATABASE
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</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>
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DROP DATABASE
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</refname>
<refpurpose>
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remove a database
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</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
<refsynopsisdivinfo>
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<date>1999-12-11</date>
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</refsynopsisdivinfo>
<synopsis>
DROP DATABASE <replaceable class="PARAMETER">name</replaceable>
</synopsis>
<refsect2 id="R2-SQL-DROPDATABASE-1">
<refsect2info>
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<date>1999-12-11</date>
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</refsect2info>
<title>
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Inputs
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</title>
<para>
<variablelist>
<varlistentry>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
<para>
The name of an existing database to remove.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
<refsect2 id="R2-SQL-DROPDATABASE-2">
<refsect2info>
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<date>1999-12-11</date>
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</refsect2info>
<title>
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Outputs
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</title>
<para>
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<variablelist>
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<varlistentry>
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<term><computeroutput>DROP DATABASE</computeroutput></term>
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<listitem>
<para>
This message is returned if the command is successful.
</para>
</listitem>
</varlistentry>
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<varlistentry>
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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>
<para>
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You must have the special CREATEDB privilege to drop databases.
See <xref linkend="SQL-CREATEUSER" endterm="SQL-CREATEUSER-title">.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>ERROR: dropdb: cannot be executed on the template database</computeroutput></term>
<listitem>
<para>
The <literal>template1</literal> database cannot be removed. It's not in
your interest.
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</para>
</listitem>
</varlistentry>
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<varlistentry>
<term><computeroutput>ERROR: dropdb: cannot be executed on an open database</computeroutput></term>
<listitem>
<para>
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You cannot be connected to the database your are about to remove.
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Instead, you could connect to <literal>template1</literal> or any other
database and run this command again.
</para>
</listitem>
</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>
<para>
This message occurs if the specified database does not exist.
</para>
</listitem>
</varlistentry>
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<varlistentry>
<term><computeroutput>ERROR: dropdb: database '<replaceable class="parameter">name</replaceable>' is not owned by you</computeroutput></term>
<listitem>
<para>
You must be the owner of the database. Being the owner usually means that
you created it as well.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>ERROR: dropdb: May not be called in a transaction block.</computeroutput></term>
<listitem>
<para>
You must finish the transaction in progress before you can call this command.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>NOTICE: The database directory 'xxx' could not be removed.</computeroutput></term>
<listitem>
<para>
The database was dropped (unless other error messages came up), but the
directory where the data is stored could not be removed. You must delete
it manually.
</para>
</listitem>
</varlistentry>
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</variablelist>
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</para>
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</refsect2>
</refsynopsisdiv>
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<refsect1 id="R1-SQL-DROPDATABASE-1">
<refsect1info>
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<date>1999-12-11</date>
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</refsect1info>
<title>
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Description
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</title>
<para>
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<command>DROP DATABASE</command> removes the catalog entries for an existing
database and deletes the directory containing the data.
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It can only be executed by the database owner (usually the user that created
it).
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</para>
<refsect2 id="R2-SQL-DROPDATABASE-3">
<refsect2info>
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<date>1999-12-11</date>
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</refsect2info>
<title>
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Notes
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</title>
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<para>
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This command cannot be executed while connected to the target
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.
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</para>
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<para>
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Refer to
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<xref linkend="sql-createdatabase" endterm="sql-createdatabase-title">
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for information on how to create a database.
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</para>
</refsect2>
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</refsect1>
<refsect1 id="R1-SQL-DROPDATABASE-3">
<title>
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Compatibility
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</title>
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<refsect2 id="R2-SQL-DROPDATABASE-4">
<refsect2info>
<date>1998-04-15</date>
</refsect2info>
<title>
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SQL92
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</title>
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<para>
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<command>DROP DATABASE</command> statement is a
<productname>Postgres</productname> language extension;
there is no such command in <acronym>SQL92</acronym>.
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</para>
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</refsect2>
</refsect1>
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</refentry>
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