Minor editorialization on example --- I think that the use of dollar

quoting in this case is just needless obscurantism.
This commit is contained in:
Tom Lane 2004-08-08 02:05:32 +00:00
parent ff9d69d931
commit 6c3561b9e4

View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_domain.sgml,v 1.18 2004/08/08 01:49:30 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/create_domain.sgml,v 1.19 2004/08/08 02:05:32 tgl Exp $
PostgreSQL documentation
-->
@ -161,14 +161,14 @@ where <replaceable class="PARAMETER">constraint</replaceable> is:
<para>
This example creates the <type>us_postal_code</type> data type and
then uses the type in a table definition:
then uses the type in a table definition. A regular expression test
is used to verify that the value looks like a valid US postal code.
<programlisting>
CREATE DOMAIN us_postal_code AS TEXT
NOT NULL
CHECK(
VALUE ~ $pc$^\d{5}$$pc$
OR VALUE ~ $pc$^\d{5}-\d{4}$$pc$
VALUE ~ '^\d{5}$'
OR VALUE ~ '^\d{5}-\d{4}$'
);
CREATE TABLE us_snail_addy (
@ -177,7 +177,7 @@ CREATE TABLE us_snail_addy (
, street2 TEXT
, street3 TEXT
, city TEXT NOT NULL
, postal us_postal_code
, postal us_postal_code NOT NULL
);
</programlisting>
</para>