Commit 4b7f50eb authored by Peter Eisentraut's avatar Peter Eisentraut

Some small changes for plperl.sgml:

   - wrapped long code-lines, for pdf
   - typo

Erik Rijkers
parent 0544c8cd
<!-- $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"> <chapter id="plperl">
<title>PL/Perl - Perl Procedural Language</title> <title>PL/Perl - Perl Procedural Language</title>
...@@ -173,7 +173,7 @@ $$ LANGUAGE plperl; ...@@ -173,7 +173,7 @@ $$ LANGUAGE plperl;
Similarly, values passed back to <productname>PostgreSQL</productname> Similarly, values passed back to <productname>PostgreSQL</productname>
must be in the external text representation format. For example, the must be in the external text representation format. For example, the
<function>encode_bytea</function> function can be used to <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>
<para> <para>
...@@ -515,7 +515,8 @@ SELECT * from lotsa_md5(500); ...@@ -515,7 +515,8 @@ SELECT * from lotsa_md5(500);
<literal>spi_prepare</literal> accepts a query string with numbered argument placeholders ($1, $2, etc) <literal>spi_prepare</literal> accepts a query string with numbered argument placeholders ($1, $2, etc)
and a string list of argument types: and a string list of argument types:
<programlisting> <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> </programlisting>
Once a query plan is prepared by a call to <literal>spi_prepare</literal>, the plan can be used instead 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 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 ...@@ -534,7 +535,8 @@ $plan = spi_prepare('SELECT * FROM test WHERE id &gt; $1 AND name = $2', 'INTEGE
<para> <para>
<programlisting> <programlisting>
CREATE OR REPLACE FUNCTION init() RETURNS VOID AS $$ CREATE OR REPLACE FUNCTION init() RETURNS VOID AS $$
$_SHARED{my_plan} = spi_prepare( 'SELECT (now() + $1)::date AS now', 'INTERVAL'); $_SHARED{my_plan} = spi_prepare('SELECT (now() + $1)::date AS now',
'INTERVAL');
$$ LANGUAGE plperl; $$ LANGUAGE plperl;
CREATE OR REPLACE FUNCTION add_time( INTERVAL ) RETURNS TEXT AS $$ CREATE OR REPLACE FUNCTION add_time( INTERVAL ) RETURNS TEXT AS $$
...@@ -571,10 +573,12 @@ SELECT done(); ...@@ -571,10 +573,12 @@ SELECT done();
<para> <para>
<programlisting> <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 $$ CREATE OR REPLACE FUNCTION init_hosts_query() RETURNS VOID AS $$
$_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');
$$ LANGUAGE plperl; $$ LANGUAGE plperl;
CREATE OR REPLACE FUNCTION query_hosts(inet) RETURNS SETOF hosts AS $$ CREATE OR REPLACE FUNCTION query_hosts(inet) RETURNS SETOF hosts AS $$
......
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