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><H1
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>ALTER GROUP</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN63746"
></A
><H2
>Name</H2
>ALTER GROUP&nbsp;--&nbsp;change role name or membership</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN63751"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER GROUP <TT
CLASS="REPLACEABLE"
><I
>group_name</I
></TT
> ADD USER <TT
CLASS="REPLACEABLE"
><I
>user_name</I
></TT
> [, ... ]
ALTER GROUP <TT
CLASS="REPLACEABLE"
><I
>group_name</I
></TT
> DROP USER <TT
CLASS="REPLACEABLE"
><I
>user_name</I
></TT
> [, ... ]

ALTER GROUP <TT
CLASS="REPLACEABLE"
><I
>group_name</I
></TT
> RENAME TO <TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN63759"
></A
><H2
>Description</H2
><P
>   <TT
CLASS="COMMAND"
>ALTER GROUP</TT
> changes the attributes of a user group.
   This is an obsolete command, though still accepted for backwards
   compatibility, because groups (and users too) have been superseded by the
   more general concept of roles.
  </P
><P
>   The first two variants add users to a group or remove them from a group.
   (Any role can play the part of either a <SPAN
CLASS="QUOTE"
>"user"</SPAN
> or a
   <SPAN
CLASS="QUOTE"
>"group"</SPAN
> for this purpose.)  These variants are effectively
   equivalent to granting or revoking membership in the role named as the
   <SPAN
CLASS="QUOTE"
>"group"</SPAN
>; so the preferred way to do this is to use
   <A
HREF="sql-grant.html"
>GRANT</A
> or
   <A
HREF="sql-revoke.html"
>REVOKE</A
>.
  </P
><P
>   The third variant changes the name of the group.  This is exactly
   equivalent to renaming the role with
   <A
HREF="sql-alterrole.html"
>ALTER ROLE</A
>.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN63771"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>group_name</I
></TT
></DT
><DD
><P
>      The name of the group (role) to modify.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>user_name</I
></TT
></DT
><DD
><P
>      Users (roles) that are to be added to or removed from the group.
      The users must already exist; <TT
CLASS="COMMAND"
>ALTER GROUP</TT
> does not
      create or drop users.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></DT
><DD
><P
>      The new name of the group.
     </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN63790"
></A
><H2
>Examples</H2
><P
>   Add users to a group:

</P><PRE
CLASS="PROGRAMLISTING"
>ALTER GROUP staff ADD USER karl, john;</PRE
><P>

   Remove a user from a group:

</P><PRE
CLASS="PROGRAMLISTING"
>ALTER GROUP workers DROP USER beth;</PRE
><P></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN63795"
></A
><H2
>Compatibility</H2
><P
>   There is no <TT
CLASS="COMMAND"
>ALTER GROUP</TT
> statement in the SQL
   standard.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN63799"
></A
><H2
>See Also</H2
><A
HREF="sql-grant.html"
>GRANT</A
>, <A
HREF="sql-revoke.html"
>REVOKE</A
>, <A
HREF="sql-alterrole.html"
>ALTER ROLE</A
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