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diff --git a/doc/src/sgml/html/ecpg-sql-type.html b/doc/src/sgml/html/ecpg-sql-type.html new file mode 100644 index 0000000..9ae97fa --- /dev/null +++ b/doc/src/sgml/html/ecpg-sql-type.html @@ -0,0 +1,88 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>TYPE</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="ecpg-sql-set-descriptor.html" title="SET DESCRIPTOR" /><link rel="next" href="ecpg-sql-var.html" title="VAR" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">TYPE</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="ecpg-sql-set-descriptor.html" title="SET DESCRIPTOR">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="ecpg-sql-commands.html" title="36.14. Embedded SQL Commands">Up</a></td><th width="60%" align="center">36.14. Embedded SQL Commands</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="ecpg-sql-var.html" title="VAR">Next</a></td></tr></table><hr /></div><div class="refentry" id="ECPG-SQL-TYPE"><div class="titlepage"></div><div class="refnamediv"><h2>TYPE</h2><p>TYPE — define a new data type</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis"> +TYPE <em class="replaceable"><code>type_name</code></em> IS <em class="replaceable"><code>ctype</code></em> +</pre></div><div class="refsect1" id="id-1.7.5.20.17.3"><h2>Description</h2><p> + The <code class="command">TYPE</code> command defines a new C type. It is + equivalent to putting a <code class="literal">typedef</code> into a declare + section. + </p><p> + This command is only recognized when <code class="command">ecpg</code> is + run with the <code class="option">-c</code> option. + </p></div><div class="refsect1" id="id-1.7.5.20.17.4"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>type_name</code></em></span></dt><dd><p> + The name for the new type. It must be a valid C type name. + </p></dd><dt><span class="term"><em class="replaceable"><code>ctype</code></em></span></dt><dd><p> + A C type specification. + </p></dd></dl></div></div><div class="refsect1" id="id-1.7.5.20.17.5"><h2>Examples</h2><pre class="programlisting"> +EXEC SQL TYPE customer IS + struct + { + varchar name[50]; + int phone; + }; + +EXEC SQL TYPE cust_ind IS + struct ind + { + short name_ind; + short phone_ind; + }; + +EXEC SQL TYPE c IS char reference; +EXEC SQL TYPE ind IS union { int integer; short smallint; }; +EXEC SQL TYPE intarray IS int[AMOUNT]; +EXEC SQL TYPE str IS varchar[BUFFERSIZ]; +EXEC SQL TYPE string IS char[11]; +</pre><p> + Here is an example program that uses <code class="command">EXEC SQL + TYPE</code>: +</p><pre class="programlisting"> +EXEC SQL WHENEVER SQLERROR SQLPRINT; + +EXEC SQL TYPE tt IS + struct + { + varchar v[256]; + int i; + }; + +EXEC SQL TYPE tt_ind IS + struct ind { + short v_ind; + short i_ind; + }; + +int +main(void) +{ +EXEC SQL BEGIN DECLARE SECTION; + tt t; + tt_ind t_ind; +EXEC SQL END DECLARE SECTION; + + EXEC SQL CONNECT TO testdb AS con1; + EXEC SQL SELECT pg_catalog.set_config('search_path', '', false); EXEC SQL COMMIT; + + EXEC SQL SELECT current_database(), 256 INTO :t:t_ind LIMIT 1; + + printf("t.v = %s\n", t.v.arr); + printf("t.i = %d\n", t.i); + + printf("t_ind.v_ind = %d\n", t_ind.v_ind); + printf("t_ind.i_ind = %d\n", t_ind.i_ind); + + EXEC SQL DISCONNECT con1; + + return 0; +} +</pre><p> + + The output from this program looks like this: +</p><pre class="screen"> +t.v = testdb +t.i = 256 +t_ind.v_ind = 0 +t_ind.i_ind = 0 +</pre><p> + </p></div><div class="refsect1" id="id-1.7.5.20.17.6"><h2>Compatibility</h2><p> + The <code class="command">TYPE</code> command is a PostgreSQL extension. + </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ecpg-sql-set-descriptor.html" title="SET DESCRIPTOR">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ecpg-sql-commands.html" title="36.14. 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