be added through data modification commands. By default, tables do

not have any policies and all rows are visible and able to be added,

subject to the regular <xref linkend="ddl-priv"> system. This is

also knowntoas Row Level Security.

also known as Row Level Security.

</para>

<para>

<para>

Row security policies can be specific to commands, or to roles, or to

both. The commands available are <literal>SELECT</>, <literal>INSERT</>,

<literal>UPDATE</>,and <literal>DELETE</>. Multiple roles can be

rules apply.

both. The commands available are <literal>ALL</literal>,

<literal>SELECT</>,<literal>INSERT</>, <literal>UPDATE</>, and

and normal role membership and inheiritancerules apply.

</para>

<para>

charcmd;

if (!cmd_name)

elog(ERROR,"unregonized command");

elog(ERROR,"unrecognized command");

if (strcmp(cmd_name,"all")==0)

cmd=0;