A tuple is passed as a reference to a hash. The keys are the names
of the fields in the tuples. The hash values are values of the
...
...
@@ -151,7 +155,7 @@ CREATE FUNCTION empcomp(employee) RETURNS integer AS '
</tip>
<para>
The new function <function>empcomp</function> can used like:
The new function <function>empcomp</function> can be used like:
<programlisting>
SELECT name, empcomp(employee) FROM employee;
</programlisting>
...
...
@@ -165,18 +169,22 @@ CREATE FUNCTION badfunc() RETURNS integer AS '
open(TEMP, ">/tmp/badfile");
print TEMP "Gotcha!\n";
return 1;
' LANGUAGE 'plperl';
' LANGUAGE plperl;
</programlisting>
The creation of the function will succeed, but executing it will not.
</para>
<para>
Note that if same function was created by superuser using language
<literal>plperlu</>, execution would succeed.
</para>
<para>
Access to database itself from your Perl function can be done via
an experimental module <ulink url="http://www.formenos.org/PgSPI/"><literal>DBD::PgSPI</literal></ulink>. This module makes available a <acronym>DBI</>-compliant
database-handle named <varname>$pg_dbh</varname>, and you can use that to make queries with
