<!-- $Header: /cvsroot/pgsql/doc/src/sgml/rules.sgml,v 1.15 2001/09/10 21:58:47 petere Exp $ -->

<!-- $Header: /cvsroot/pgsql/doc/src/sgml/rules.sgml,v 1.16 2001/09/12 01:22:25 ishii Exp $ -->

<Chapter Id="rules">

<Title>The <ProductName>Postgres</ProductName> Rule System</Title>

at the current data,

<ProgramListing>

al_bundy=> SELECT * FROM shoelace ORDER BY sl_name;

al_bundy=> SELECT * FROM shoelace;

sl_name |sl_avail|sl_color |sl_len|sl_unit |sl_len_cm

----------+--------+----------+------+--------+---------

sl1 | 5|black | 80|cm | 80

<ProgramListing>

CREATE TABLE computer (

hostname text -- indexed

hostname text, -- indexed

manufacturer text -- indexed

);