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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html><head><title>SQLite Query Language: comment</title><style type="text/css">body { margin: auto; font-family: "Verdana" "sans-serif"; padding: 8px 1%;}a { color: #45735f }a:visited { color: #734559 }.logo { position:absolute; margin:3px; }.tagline { float:right; text-align:right; font-style:italic; width:240px; margin:12px; margin-top:58px;}.toolbar { font-variant: small-caps; text-align: center; line-height: 1.6em; margin: 0; padding:1px 8px;}.toolbar a { color: white; text-decoration: none; padding: 6px 12px; }.toolbar a:visited { color: white; }.toolbar a:hover { color: #80a796; background: white; }.content { margin: 5%; }.content dt { font-weight:bold; }.content dd { margin-bottom: 25px; margin-left:20%; }.content ul { padding:0px; padding-left: 15px; margin:0px; }/* rounded corners */.se { background: url(images/se.png) 100% 100% no-repeat #80a796}.sw { background: url(images/sw.png) 0% 100% no-repeat }.ne { background: url(images/ne.png) 100% 0% no-repeat }.nw { background: url(images/nw.png) 0% 0% no-repeat }</style><meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head><body><div><!-- container div to satisfy validator --><a href="index.html"><img class="logo" src="images/SQLite.gif" alt="SQLite Logo" border="0"></a><div><!-- IE hack to prevent disappearing logo--></div><div class="tagline">Small. Fast. Reliable.<br>Choose any three.</div><table width=100% style="clear:both"><tr><td> <div class="se"><div class="sw"><div class="ne"><div class="nw"> <div class="toolbar"> <a href="about.html">About</a> <a href="sitemap.html">Sitemap</a> <a href="docs.html">Documentation</a> <a href="download.html">Download</a> <a href="copyright.html">License</a> <a href="news.html">News</a> <a href="http://www.sqlite.org/cvstrac/index">Developers</a> <a href="support.html">Support</a> </div></div></div></div></div></td></tr></table> <a href="lang.html"><h2>SQL As Understood By SQLite</h2></a><h3>comment</h3><table cellpadding="10"><tr><td align="right" valign="top"><i><font color="#ff3434">comment</font></i> ::=</td><td><b><font color="#2c2cf0"></font></b><i><font color="#ff3434">SQL-comment</font></i><b><font color="#2c2cf0"> </font></b><big>|</big><b><font color="#2c2cf0"> </font></b><i><font color="#ff3434">C-comment</font></i><b><font color="#2c2cf0"></font></b></td></tr><tr><td align="right" valign="top"><i><font color="#ff3434">SQL-comment</font></i> ::=</td><td><b><font color="#2c2cf0">-- </font></b><i><font color="#ff3434">single-line</font></i><b><font color="#2c2cf0"></font></b></td></tr><tr><td align="right" valign="top"><i><font color="#ff3434">C-comment</font></i> ::=</td><td><b><font color="#2c2cf0">/<big>*</big> </font></b><i><font color="#ff3434">multiple-lines</font></i><b><font color="#2c2cf0"> </font></b>[<b><font color="#2c2cf0"><big>*</big>/</font></b>]<b><font color="#2c2cf0"></font></b></td></tr></table><p> Comments aren't SQL commands, but can occur in SQL queries. They are treated as whitespace by the parser. They can begin anywhere whitespace can be found, including inside expressions that span multiple lines.</p><p> SQL comments only extend to the end of the current line.</p><p> C comments can span any number of lines. If there is no terminatingdelimiter, they extend to the end of the input. This is not treated asan error. A new SQL statement can begin on a line after a multilinecomment ends. C comments can be embedded anywhere whitespace can occur,including inside expressions, and in the middle of other SQL statements.C comments do not nest. SQL comments inside a C comment will be ignored.</p><hr><small<i>This page last modified 2007/12/20 21:09:25 UTC</i></small></div></body></html>⌨️ 快捷键说明
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