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Some small changes for plperl.sgml:

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- wrapped long code-lines, for pdf
   - typo

Erik Rijkers
This commit is contained in:
Peter Eisentraut 2010-07-08 21:35:33 +00:00
parent 0544c8cd57
commit 4b7f50eb81
1 changed files with 10 additions and 6 deletions
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16
doc/src/sgml/plperl.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.85 2010/06/14 18:47:05 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.86 2010/07/08 21:35:33 petere Exp $ -->
<chapter id="plperl">
<title>PL/Perl - Perl Procedural Language</title>
@ -173,7 +173,7 @@ $$ LANGUAGE plperl;
Similarly, values passed back to <productname>PostgreSQL</productname>
must be in the external text representation format. For example, the
<function>encode_bytea</function> function can be used to
to escape binary data for a return value of type <type>bytea</>.
escape binary data for a return value of type <type>bytea</>.
</para>
<para>
@ -515,7 +515,8 @@ SELECT * from lotsa_md5(500);
<literal>spi_prepare</literal> accepts a query string with numbered argument placeholders ($1, $2, etc)
and a string list of argument types:
<programlisting>
$plan = spi_prepare('SELECT * FROM test WHERE id &gt; $1 AND name = $2', 'INTEGER', 'TEXT');
$plan = spi_prepare('SELECT * FROM test WHERE id &gt; $1 AND name = $2',
'INTEGER', 'TEXT');
</programlisting>
Once a query plan is prepared by a call to <literal>spi_prepare</literal>, the plan can be used instead
of the string query, either in <literal>spi_exec_prepared</literal>, where the result is the same as returned
@ -534,7 +535,8 @@ $plan = spi_prepare('SELECT * FROM test WHERE id &gt; $1 AND name = $2', 'INTEGE
<para>
<programlisting>
CREATE OR REPLACE FUNCTION init() RETURNS VOID AS $$
$_SHARED{my_plan} = spi_prepare( 'SELECT (now() + $1)::date AS now', 'INTERVAL');
$_SHARED{my_plan} = spi_prepare('SELECT (now() + $1)::date AS now',
'INTERVAL');
$$ LANGUAGE plperl;
CREATE OR REPLACE FUNCTION add_time( INTERVAL ) RETURNS TEXT AS $$
@ -571,10 +573,12 @@ SELECT done();
<para>
<programlisting>
CREATE TABLE hosts AS SELECT id, ('192.168.1.'||id)::inet AS address FROM generate_series(1,3) AS id;
CREATE TABLE hosts AS SELECT id, ('192.168.1.'||id)::inet AS address
FROM generate_series(1,3) AS id;
CREATE OR REPLACE FUNCTION init_hosts_query() RETURNS VOID AS $$
$_SHARED{plan} = spi_prepare('SELECT * FROM hosts WHERE address &lt;&lt; $1', 'inet');
$_SHARED{plan} = spi_prepare('SELECT * FROM hosts
WHERE address &lt;&lt; $1', 'inet');
$$ LANGUAGE plperl;
CREATE OR REPLACE FUNCTION query_hosts(inet) RETURNS SETOF hosts AS $$