summaryrefslogtreecommitdiffstats
path: root/www/c3ref/changes.html
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 14:07:11 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 14:07:11 +0000
commit63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/changes.html
parentInitial commit. (diff)
downloadsqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz
sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip
Adding upstream version 3.45.1.upstream/3.45.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'www/c3ref/changes.html')
-rw-r--r--www/c3ref/changes.html186
1 files changed, 186 insertions, 0 deletions
diff --git a/www/c3ref/changes.html b/www/c3ref/changes.html
new file mode 100644
index 0000000..60cd93d
--- /dev/null
+++ b/www/c3ref/changes.html
@@ -0,0 +1,186 @@
+<!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>Count The Number Of Rows Modified</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_changes sqlite3_changes64 -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Count The Number Of Rows Modified</h2>
+</div>
+<blockquote><pre>
+int sqlite3_changes(sqlite3*);
+sqlite3_int64 sqlite3_changes64(sqlite3*);
+</pre></blockquote>
+<p>
+These functions return the number of rows modified, inserted or
+deleted by the most recently completed INSERT, UPDATE or DELETE
+statement on the database connection specified by the only parameter.
+The two functions are identical except for the type of the return value
+and that if the number of rows modified by the most recent INSERT, UPDATE
+or DELETE is greater than the maximum value supported by type "int", then
+the return value of sqlite3_changes() is undefined. Executing any other
+type of SQL statement does not modify the value returned by these functions.</p>
+
+<p>Only changes made directly by the INSERT, UPDATE or DELETE statement are
+considered - auxiliary changes caused by <a href="../lang_createtrigger.html">triggers</a>,
+<a href="../foreignkeys.html#fk_actions">foreign key actions</a> or <a href="../lang_replace.html">REPLACE</a> constraint resolution are not counted.</p>
+
+<p>Changes to a view that are intercepted by
+<a href="../lang_createtrigger.html#instead_of_trigger">INSTEAD OF triggers</a> are not counted. The value
+returned by sqlite3_changes() immediately after an INSERT, UPDATE or
+DELETE statement run on a view is always zero. Only changes made to real
+tables are counted.</p>
+
+<p>Things are more complicated if the sqlite3_changes() function is
+executed while a trigger program is running. This may happen if the
+program uses the <a href="../lang_corefunc.html#changes">changes() SQL function</a>, or if some other callback
+function invokes sqlite3_changes() directly. Essentially:</p>
+
+<p><ul>
+<li> Before entering a trigger program the value returned by
+sqlite3_changes() function is saved. After the trigger program
+has finished, the original value is restored.</p>
+
+<p><li> Within a trigger program each INSERT, UPDATE and DELETE
+statement sets the value returned by sqlite3_changes()
+upon completion as normal. Of course, this value will not include
+any changes performed by sub-triggers, as the sqlite3_changes()
+value will be saved and restored after each sub-trigger has run.
+</ul></p>
+
+<p>This means that if the changes() SQL function (or similar) is used
+by the first INSERT, UPDATE or DELETE statement within a trigger, it
+returns the value as set when the calling statement began executing.
+If it is used by the second or subsequent such statement within a trigger
+program, the value returned reflects the number of rows modified by the
+previous INSERT, UPDATE or DELETE statement within the same trigger.</p>
+
+<p>If a separate thread makes changes on the same database connection
+while <a href="../c3ref/changes.html">sqlite3_changes()</a> is running then the value returned
+is unpredictable and not meaningful.</p>
+
+<p>See also:
+<ul>
+<li> the <a href="../c3ref/total_changes.html">sqlite3_total_changes()</a> interface
+<li> the <a href="../pragma.html#pragma_count_changes">count_changes pragma</a>
+<li> the <a href="../lang_corefunc.html#changes">changes() SQL function</a>
+<li> the <a href="../pragma.html#pragma_data_version">data_version pragma</a>
+</ul>
+</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>
+