<html dir="LTR" xmlns="http://www.w3.org/1999/xhtml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:tool="http://www.microsoft.com/tooltip" xmlns:ndoc="urn:ndoc-preprocess">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252" />
<title>UPDATE</title>
<link rel="stylesheet" type="text/css" href="ndoc.css"> </link>
<link rel="stylesheet" type="text/css" href="user.css"> </link>
<script type="text/javascript" src="ndoc.js"> </script>
</head>
<body style="display: none;">
<input type="hidden" id="userDataCache" class="userDataStyle" />
<input type="hidden" id="hiddenScrollOffset" />
<img id="dropDownImage" style="display:none; height:0; width:0;" src="drpdown.gif" />
<img id="dropDownHoverImage" style="display:none; height:0; width:0;" src="drpdown_orange.gif" />
<img id="collapseImage" style="display:none; height:0; width:0;" src="collapse.gif" />
<img id="expandImage" style="display:none; height:0; width:0;" src="exp.gif" />
<img id="collapseAllImage" style="display:none; height:0; width:0;" src="collall.gif" />
<img id="expandAllImage" style="display:none; height:0; width:0;" src="expall.gif" />
<img id="copyImage" style="display:none; height:0; width:0;" src="copycode.gif" />
<img id="copyHoverImage" style="display:none; height:0; width:0;" src="copycodeHighlight.gif" />
<div id="header">
<table width="100%" id="topTable">
<tr id="headerTableRow1">
<td align="left">
UPDATE </td>
</tr>
<tr id="headerTableRow2">
<td align="left">
<span id="nsrTitle">SQLite Language Reference Documentation</span>
</td>
</tr>
<tr id="headerTableRow3" style="display:none">
<td>
<a id="seeAlsoSectionLink" href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a>
<a id="exampleSectionLink" href="#codeExampleToggle" onclick="OpenSection(codeExampleToggle)">Example</a>
</td>
</tr>
</table>
<table width="100%" id="bottomTable" cellspacing="0" cellpadding="0" style="display:none">
<tr>
<td>
<span onclick="ExpandCollapseAll(toggleAllImage)" style="cursor:default;" onkeypress="ExpandCollapseAll_CheckKey(toggleAllImage)" tabindex="0">
<img ID="toggleAllImage" class="toggleAll" src="collall.gif" />
<label id="collapseAllLabel" for="toggleAllImage" style="display: none;">
Collapse All
</label>
<label id="expandAllLabel" for="toggleAllImage" style="display: none;">
Expand All
</label>
</span>
</td>
</tr>
</table>
</div>
<div id="mainSection">
<div id="mainBody">
<h1 class="heading">
SQL As Understood By SQLite</h1>
<h4>
UPDATE</h4>
<p>
<table cellpadding="10">
<tr>
<td align="right" width="1%" nowrap>
<i><font color="#ff3434">sql-statement</font></i> ::=</td>
<td>
<b><font color="#2c2cf0">UPDATE </font></b>[<b><font color="#2c2cf0"> OR </font></b>
<i><font color="#ff3434">conflict-algorithm</font></i><b><font color="#2c2cf0"> </font>
</b>]<b><font color="#2c2cf0"> </font></b>[<b><font color="#2c2cf0"></font></b><i><font
color="#ff3434">database-name</font></i><b><font color="#2c2cf0"> <big>.</big></font></b>]<b><font
color="#2c2cf0"> </font></b><i><font color="#ff3434">table-name</font></i><b><font
color="#2c2cf0"><br />
SET </font></b><i><font color="#ff3434">assignment</font></i><b><font color="#2c2cf0">
</font></b>[<b><font color="#2c2cf0"><big>,</big> </font></b><i><font color="#ff3434">
assignment</font></i><b><font color="#2c2cf0"></font></b>]<b><font color="#2c2cf0"></font></b><big>*</big><b><font
color="#2c2cf0"><br />
</font></b>[<b><font color="#2c2cf0">WHERE </font></b><i><font color="#ff3434">expr</font></i><b><font
color="#2c2cf0"></font></b>]<b><font color="#2c2cf0"></font></b></td>
</tr>
<tr>
<td align="right" width="1%" nowrap>
<i><font color="#ff3434">assignment</font></i> ::=</td>
<td>
<b><font color="#2c2cf0"></font></b><i><font color="#ff3434">column-name</font></i><b><font
color="#2c2cf0"> <big>=</big> </font></b><i><font color="#ff3434">expr</font></i><b><font
color="#2c2cf0"></font></b></td>
</tr>
</table>
</p>
<p>
The UPDATE statement is used to change the value of columns in selected rows of
a table. Each assignment in an UPDATE specifies a column
name to the left of the
equals sign and an arbitrary expression to the right. The expressions may use the
values of
other columns. All expressions are evaluated before any assignments are
made. A WHERE clause can be used to restrict which rows are updated.</p>
<p>
The optional conflict-clause allows the specification of an alternative constraint conflict resolution algorithm to use during this one command. See the section titled
<a href="lang_conflict.html">ON CONFLICT</a> for additional information.</p>
<p>
<hr>
</p>
<div id="footer">
<p>
</p>
<p>
</p>
</div>
</div>
</div>
</body>
</html>
