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><H1
><A
NAME="SQL-ALTERGROUP"
></A
>ALTER GROUP</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN52893"
></A
><H2
>Name</H2
>ALTER GROUP -- change role name or membership</DIV
><A
NAME="AEN52896"
></A
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN52898"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER GROUP <TT
CLASS="REPLACEABLE"
><I
>groupname</I
></TT
> ADD USER <TT
CLASS="REPLACEABLE"
><I
>username</I
></TT
> [, ... ]
ALTER GROUP <TT
CLASS="REPLACEABLE"
><I
>groupname</I
></TT
> DROP USER <TT
CLASS="REPLACEABLE"
><I
>username</I
></TT
> [, ... ]
ALTER GROUP <TT
CLASS="REPLACEABLE"
><I
>groupname</I
></TT
> RENAME TO <TT
CLASS="REPLACEABLE"
><I
>newname</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52906"
></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compatibility, because groups (and users too) have been superseded by the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"
><I
>GRANT</I
></A
> or
<A
HREF="sql-revoke.html"
><I
>REVOKE</I
></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"
><I
>ALTER ROLE</I
></A
>.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52918"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>groupname</I
></TT
></DT
><DD
><P
> The name of the group (role) to modify.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>username</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
>newname</I
></TT
></DT
><DD
><P
> The new name of the group.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52937"
></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="AEN52942"
></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="AEN52946"
></A
><H2
>See Also</H2
><A
HREF="sql-grant.html"
><I
>GRANT</I
></A
>, <A
HREF="sql-revoke.html"
><I
>REVOKE</I
></A
>, <A
HREF="sql-alterrole.html"
><I
>ALTER ROLE</I
></A
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>
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