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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 13:44:03 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 13:44:03 +0000 |
| commit | 293913568e6a7a86fd1479e1cff8e2ecb58d6568 (patch) | |
| tree | fc3b469a3ec5ab71b36ea97cc7aaddb838423a0c /doc/src/sgml/html/ecpg-sql-describe.html | |
| parent | Initial commit. (diff) | |
| download | postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.tar.xz postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.zip | |
Adding upstream version 16.2.upstream/16.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'doc/src/sgml/html/ecpg-sql-describe.html')
| -rw-r--r-- | doc/src/sgml/html/ecpg-sql-describe.html | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/src/sgml/html/ecpg-sql-describe.html b/doc/src/sgml/html/ecpg-sql-describe.html new file mode 100644 index 0000000..811bf28 --- /dev/null +++ b/doc/src/sgml/html/ecpg-sql-describe.html @@ -0,0 +1,26 @@ +<?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>DESCRIBE</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-declare-statement.html" title="DECLARE STATEMENT" /><link rel="next" href="ecpg-sql-disconnect.html" title="DISCONNECT" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">DESCRIBE</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="ecpg-sql-declare-statement.html" title="DECLARE STATEMENT">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 16.2 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="ecpg-sql-disconnect.html" title="DISCONNECT">Next</a></td></tr></table><hr /></div><div class="refentry" id="ECPG-SQL-DESCRIBE"><div class="titlepage"></div><div class="refnamediv"><h2>DESCRIBE</h2><p>DESCRIBE — obtain information about a prepared statement or result set</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis"> +DESCRIBE [ OUTPUT ] <em class="replaceable"><code>prepared_name</code></em> USING [ SQL ] DESCRIPTOR <em class="replaceable"><code>descriptor_name</code></em> +DESCRIBE [ OUTPUT ] <em class="replaceable"><code>prepared_name</code></em> INTO [ SQL ] DESCRIPTOR <em class="replaceable"><code>descriptor_name</code></em> +DESCRIBE [ OUTPUT ] <em class="replaceable"><code>prepared_name</code></em> INTO <em class="replaceable"><code>sqlda_name</code></em> +</pre></div><div class="refsect1" id="id-1.7.5.20.8.3"><h2>Description</h2><p> + <code class="command">DESCRIBE</code> retrieves metadata information about + the result columns contained in a prepared statement, without + actually fetching a row. + </p></div><div class="refsect1" id="id-1.7.5.20.8.4"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt id="ECPG-SQL-DESCRIBE-PREPARED-NAME"><span class="term"><em class="replaceable"><code>prepared_name</code></em></span> <a href="#ECPG-SQL-DESCRIBE-PREPARED-NAME" class="id_link">#</a></dt><dd><p> + The name of a prepared statement. This can be an SQL + identifier or a host variable. + </p></dd><dt id="ECPG-SQL-DESCRIBE-DESCRIPTOR-NAME"><span class="term"><em class="replaceable"><code>descriptor_name</code></em></span> <a href="#ECPG-SQL-DESCRIBE-DESCRIPTOR-NAME" class="id_link">#</a></dt><dd><p> + A descriptor name. It is case sensitive. It can be an SQL + identifier or a host variable. + </p></dd><dt id="ECPG-SQL-DESCRIBE-SQLDA-NAME"><span class="term"><em class="replaceable"><code>sqlda_name</code></em></span> <a href="#ECPG-SQL-DESCRIBE-SQLDA-NAME" class="id_link">#</a></dt><dd><p> + The name of an SQLDA variable. + </p></dd></dl></div></div><div class="refsect1" id="id-1.7.5.20.8.5"><h2>Examples</h2><pre class="programlisting"> +EXEC SQL ALLOCATE DESCRIPTOR mydesc; +EXEC SQL PREPARE stmt1 FROM :sql_stmt; +EXEC SQL DESCRIBE stmt1 INTO SQL DESCRIPTOR mydesc; +EXEC SQL GET DESCRIPTOR mydesc VALUE 1 :charvar = NAME; +EXEC SQL DEALLOCATE DESCRIPTOR mydesc; +</pre></div><div class="refsect1" id="id-1.7.5.20.8.6"><h2>Compatibility</h2><p> + <code class="command">DESCRIBE</code> is specified in the SQL standard. + </p></div><div class="refsect1" id="id-1.7.5.20.8.7"><h2>See Also</h2><span class="simplelist"><a class="xref" href="ecpg-sql-allocate-descriptor.html" title="ALLOCATE DESCRIPTOR">ALLOCATE DESCRIPTOR</a>, <a class="xref" href="ecpg-sql-get-descriptor.html" title="GET DESCRIPTOR">GET DESCRIPTOR</a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ecpg-sql-declare-statement.html" title="DECLARE STATEMENT">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ecpg-sql-commands.html" title="36.14. Embedded SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ecpg-sql-disconnect.html" title="DISCONNECT">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DECLARE STATEMENT </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="40%" align="right" valign="top"> DISCONNECT</td></tr></table></div></body></html>
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