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Fix markup, other minor editing for recent btree_gist doc changes.

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This commit is contained in:
Tom Lane 2010-08-03 15:15:31 +00:00
parent 532a4c3531
commit 8c19d14be5
1 changed files with 13 additions and 13 deletions

26
doc/src/sgml/btree-gist.sgml

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/btree-gist.sgml,v 1.6 2010/08/02 16:26:48 rhaas Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/btree-gist.sgml,v 1.7 2010/08/03 15:15:31 tgl Exp $ -->
<sect1 id="btree-gist">
<title>btree_gist</title>
@ -29,10 +29,10 @@
<para>
In addition to the typical btree search operators, btree_gist also
provides search operators for <literal>&lt;&gt;</literal> ("not
equals"). This may be useful in combination with an
<link linkend="SQL-CREATETABLE-EXCLUDE">Exclusion Constraint</link>,
as descibed below.
provides search operators for <literal>&lt;&gt;</literal> (<quote>not
equals</quote>). This may be useful in combination with an
<link linkend="SQL-CREATETABLE-EXCLUDE">exclusion constraint</link>,
as described below.
</para>
<sect2>
@ -51,26 +51,26 @@ SELECT * FROM test WHERE a &lt; 10;
</programlisting>
<para>
Example using an <link linkend="SQL-CREATETABLE-EXCLUDE">Exclusion
Constraint</link> to enforce the constraint that a cage at a zoo
Use an <link linkend="SQL-CREATETABLE-EXCLUDE">exclusion
constraint</link> to enforce the rule that a cage at a zoo
can contain only one kind of animal:
</para>
<programlisting>
=> CREATE TABLE zoo (
=&gt; CREATE TABLE zoo (
cage INTEGER,
animal TEXT,
EXCLUDE USING gist (cage WITH =, animal WITH <>)
EXCLUDE USING gist (cage WITH =, animal WITH &lt;&gt;)
);
=> INSERT INTO zoo VALUES(123, 'zebra');
=&gt; INSERT INTO zoo VALUES(123, 'zebra');
INSERT 0 1
=> INSERT INTO zoo VALUES(123, 'zebra');
=&gt; INSERT INTO zoo VALUES(123, 'zebra');
INSERT 0 1
=> INSERT INTO zoo VALUES(123, 'lion');
=&gt; INSERT INTO zoo VALUES(123, 'lion');
ERROR: conflicting key value violates exclusion constraint "zoo_cage_animal_excl"
DETAIL: Key (cage, animal)=(123, lion) conflicts with existing key (cage, animal)=(123, zebra).
=> INSERT INTO zoo VALUES(124, 'lion');
=&gt; INSERT INTO zoo VALUES(124, 'lion');
INSERT 0 1
</programlisting>