Adding upstream version 3.45.1.upstream/3.45.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-13 14:07:11 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-13 14:07:11 +0000
commit: 63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree: 01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/step.html
parent: Initial commit. (diff)
download: sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz
sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip
1 files changed, 208 insertions, 0 deletions
diff --git a/www/c3ref/step.html b/www/c3ref/step.html
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+<!DOCTYPE html>
+<html><head>
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<link href="../sqlite.css" rel="stylesheet">
+<title>Evaluate An SQL Statement</title>
+<!-- path=../ -->
+</head>
+<body>
+<div class=nosearch>
+<a href="../index.html">
+<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0">
+</a>
+<div><!-- IE hack to prevent disappearing logo --></div>
+<div class="tagline desktoponly">
+Small. Fast. Reliable.<br>Choose any three.
+</div>
+<div class="menu mainmenu">
+<ul>
+<li><a href="../index.html">Home</a>
+<li class='mobileonly'><a href="javascript:void(0)" onclick='toggle_div("submenu")'>Menu</a>
+<li class='wideonly'><a href='../about.html'>About</a>
+<li class='desktoponly'><a href="../docs.html">Documentation</a>
+<li class='desktoponly'><a href="../download.html">Download</a>
+<li class='wideonly'><a href='../copyright.html'>License</a>
+<li class='desktoponly'><a href="../support.html">Support</a>
+<li class='desktoponly'><a href="../prosupport.html">Purchase</a>
+<li class='search' id='search_menubutton'>
+<a href="javascript:void(0)" onclick='toggle_search()'>Search</a>
+</ul>
+</div>
+<div class="menu submenu" id="submenu">
+<ul>
+<li><a href='../about.html'>About</a>
+<li><a href='../docs.html'>Documentation</a>
+<li><a href='../download.html'>Download</a>
+<li><a href='../support.html'>Support</a>
+<li><a href='../prosupport.html'>Purchase</a>
+</ul>
+</div>
+<div class="searchmenu" id="searchmenu">
+<form method="GET" action="../search">
+<select name="s" id="searchtype">
+<option value="d">Search Documentation</option>
+<option value="c">Search Changelog</option>
+</select>
+<input type="text" name="q" id="searchbox" value="">
+<input type="submit" value="Go">
+</form>
+</div>
+</div>
+<script>
+function toggle_div(nm) {
+var w = document.getElementById(nm);
+if( w.style.display=="block" ){
+w.style.display = "none";
+}else{
+w.style.display = "block";
+}
+}
+function toggle_search() {
+var w = document.getElementById("searchmenu");
+if( w.style.display=="block" ){
+w.style.display = "none";
+} else {
+w.style.display = "block";
+setTimeout(function(){
+document.getElementById("searchbox").focus()
+}, 30);
+}
+}
+function div_off(nm){document.getElementById(nm).style.display="none";}
+window.onbeforeunload = function(e){div_off("submenu");}
+/* Disable the Search feature if we are not operating from CGI, since */
+/* Search is accomplished using CGI and will not work without it. */
+if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){
+document.getElementById("search_menubutton").style.display = "none";
+}
+/* Used by the Hide/Show button beside syntax diagrams, to toggle the */
+function hideorshow(btn,obj){
+var x = document.getElementById(obj);
+var b = document.getElementById(btn);
+if( x.style.display!='none' ){
+x.style.display = 'none';
+b.innerHTML='show';
+}else{
+x.style.display = '';
+b.innerHTML='hide';
+}
+return false;
+}
+var antiRobot = 0;
+function antiRobotGo(){
+if( antiRobot!=3 ) return;
+antiRobot = 7;
+var j = document.getElementById("mtimelink");
+if(j && j.hasAttribute("data-href")) j.href=j.getAttribute("data-href");
+}
+function antiRobotDefense(){
+document.body.onmousedown=function(){
+antiRobot |= 2;
+antiRobotGo();
+document.body.onmousedown=null;
+}
+document.body.onmousemove=function(){
+antiRobot |= 2;
+antiRobotGo();
+document.body.onmousemove=null;
+}
+setTimeout(function(){
+antiRobot |= 1;
+antiRobotGo();
+}, 100)
+antiRobotGo();
+}
+antiRobotDefense();
+</script>
+<!-- keywords: sqlite3_step -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Evaluate An SQL Statement</h2>
+</div>
+<blockquote><pre>
+int sqlite3_step(sqlite3_stmt*);
+</pre></blockquote>
+<p>
+After a <a href="../c3ref/stmt.html">prepared statement</a> has been prepared using any of
+<a href="../c3ref/prepare.html">sqlite3_prepare_v2()</a>, <a href="../c3ref/prepare.html">sqlite3_prepare_v3()</a>, <a href="../c3ref/prepare.html">sqlite3_prepare16_v2()</a>,
+or <a href="../c3ref/prepare.html">sqlite3_prepare16_v3()</a> or one of the legacy
+interfaces <a href="../c3ref/prepare.html">sqlite3_prepare()</a> or <a href="../c3ref/prepare.html">sqlite3_prepare16()</a>, this function
+must be called one or more times to evaluate the statement.</p>
+
+<p>The details of the behavior of the sqlite3_step() interface depend
+on whether the statement was prepared using the newer "vX" interfaces
+<a href="../c3ref/prepare.html">sqlite3_prepare_v3()</a>, <a href="../c3ref/prepare.html">sqlite3_prepare_v2()</a>, <a href="../c3ref/prepare.html">sqlite3_prepare16_v3()</a>,
+<a href="../c3ref/prepare.html">sqlite3_prepare16_v2()</a> or the older legacy
+interfaces <a href="../c3ref/prepare.html">sqlite3_prepare()</a> and <a href="../c3ref/prepare.html">sqlite3_prepare16()</a>.  The use of the
+new "vX" interface is recommended for new applications but the legacy
+interface will continue to be supported.</p>
+
+<p>In the legacy interface, the return value will be either <a href="../rescode.html#busy">SQLITE_BUSY</a>,
+<a href="../rescode.html#done">SQLITE_DONE</a>, <a href="../rescode.html#row">SQLITE_ROW</a>, <a href="../rescode.html#error">SQLITE_ERROR</a>, or <a href="../rescode.html#misuse">SQLITE_MISUSE</a>.
+With the "v2" interface, any of the other <a href="../rescode.html">result codes</a> or
+<a href="../rescode.html#extrc">extended result codes</a> might be returned as well.</p>
+
+<p><a href="../rescode.html#busy">SQLITE_BUSY</a> means that the database engine was unable to acquire the
+database locks it needs to do its job.  If the statement is a <a href="../lang_transaction.html">COMMIT</a>
+or occurs outside of an explicit transaction, then you can retry the
+statement.  If the statement is not a <a href="../lang_transaction.html">COMMIT</a> and occurs within an
+explicit transaction then you should rollback the transaction before
+continuing.</p>
+
+<p><a href="../rescode.html#done">SQLITE_DONE</a> means that the statement has finished executing
+successfully.  sqlite3_step() should not be called again on this virtual
+machine without first calling <a href="../c3ref/reset.html">sqlite3_reset()</a> to reset the virtual
+machine back to its initial state.</p>
+
+<p>If the SQL statement being executed returns any data, then <a href="../rescode.html#row">SQLITE_ROW</a>
+is returned each time a new row of data is ready for processing by the
+caller. The values may be accessed using the <a href="../c3ref/column_blob.html">column access functions</a>.
+sqlite3_step() is called again to retrieve the next row of data.</p>
+
+<p><a href="../rescode.html#error">SQLITE_ERROR</a> means that a run-time error (such as a constraint
+violation) has occurred.  sqlite3_step() should not be called again on
+the VM. More information may be found by calling <a href="../c3ref/errcode.html">sqlite3_errmsg()</a>.
+With the legacy interface, a more specific error code (for example,
+<a href="../rescode.html#interrupt">SQLITE_INTERRUPT</a>, <a href="../rescode.html#schema">SQLITE_SCHEMA</a>, <a href="../rescode.html#corrupt">SQLITE_CORRUPT</a>, and so forth)
+can be obtained by calling <a href="../c3ref/reset.html">sqlite3_reset()</a> on the
+<a href="../c3ref/stmt.html">prepared statement</a>.  In the "v2" interface,
+the more specific error code is returned directly by sqlite3_step().</p>
+
+<p><a href="../rescode.html#misuse">SQLITE_MISUSE</a> means that the this routine was called inappropriately.
+Perhaps it was called on a <a href="../c3ref/stmt.html">prepared statement</a> that has
+already been <a href="../c3ref/finalize.html">finalized</a> or on one that had
+previously returned <a href="../rescode.html#error">SQLITE_ERROR</a> or <a href="../rescode.html#done">SQLITE_DONE</a>.  Or it could
+be the case that the same database connection is being used by two or
+more threads at the same moment in time.</p>
+
+<p>For all versions of SQLite up to and including 3.6.23.1, a call to
+<a href="../c3ref/reset.html">sqlite3_reset()</a> was required after sqlite3_step() returned anything
+other than <a href="../rescode.html#row">SQLITE_ROW</a> before any subsequent invocation of
+sqlite3_step().  Failure to reset the prepared statement using
+<a href="../c3ref/reset.html">sqlite3_reset()</a> would result in an <a href="../rescode.html#misuse">SQLITE_MISUSE</a> return from
+sqlite3_step().  But after <a href="../releaselog/3_6_23_1.html">version 3.6.23.1</a> (2010-03-26,
+sqlite3_step() began
+calling <a href="../c3ref/reset.html">sqlite3_reset()</a> automatically in this circumstance rather
+than returning <a href="../rescode.html#misuse">SQLITE_MISUSE</a>.  This is not considered a compatibility
+break because any application that ever receives an SQLITE_MISUSE error
+is broken by definition.  The <a href="../compile.html#omit_autoreset">SQLITE_OMIT_AUTORESET</a> compile-time option
+can be used to restore the legacy behavior.</p>
+
+<p><b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
+API always returns a generic error code, <a href="../rescode.html#error">SQLITE_ERROR</a>, following any
+error other than <a href="../rescode.html#busy">SQLITE_BUSY</a> and <a href="../rescode.html#misuse">SQLITE_MISUSE</a>.  You must call
+<a href="../c3ref/reset.html">sqlite3_reset()</a> or <a href="../c3ref/finalize.html">sqlite3_finalize()</a> in order to find one of the
+specific <a href="../rescode.html">error codes</a> that better describes the error.
+We admit that this is a goofy design.  The problem has been fixed
+with the "v2" interface.  If you prepare all of your SQL statements
+using <a href="../c3ref/prepare.html">sqlite3_prepare_v3()</a> or <a href="../c3ref/prepare.html">sqlite3_prepare_v2()</a>
+or <a href="../c3ref/prepare.html">sqlite3_prepare16_v2()</a> or <a href="../c3ref/prepare.html">sqlite3_prepare16_v3()</a> instead
+of the legacy <a href="../c3ref/prepare.html">sqlite3_prepare()</a> and <a href="../c3ref/prepare.html">sqlite3_prepare16()</a> interfaces,
+then the more specific <a href="../rescode.html">error codes</a> are returned directly
+by sqlite3_step().  The use of the "vX" interfaces is recommended.
+</p><p>See also lists of
+  <a href="../c3ref/objlist.html">Objects</a>,
+  <a href="../c3ref/constlist.html">Constants</a>, and
+  <a href="../c3ref/funclist.html">Functions</a>.</p>
+
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-13 14:07:11 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-13 14:07:11 +0000
commit	63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree	01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/step.html
parent	Initial commit. (diff)
download	sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip