<div id="article_content" class="article_content" style="line-height:26px;font-family:Arial;color:rgb(54,46,43);">
<p style="line-height:26px;"><span style="font-size:14px;">-- Start
<p style="line-height:26px;"><span style="font-size:14px;">当你的系统变慢时，如何查询系统中最耗时的 SQL 呢？试一试下面的 SQL 吧。
<p style="line-height:26px;">
<div class="dp-highlighter bg_sql" style="font-family:Consolas,'Courier New',Courier,mono,serif;width:693px;">
<div class="bar">
<div class="tools" style="line-height:normal;font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;color:#C0C0C0;border-left-width:3px;border-left-style:solid;border-left-color:rgb(108,226,108);">
<span style="font-size:14px;">[sql] <a href="http://blog.csdn.net/shangboerds/article/details/48049665#" rel="nofollow" class="ViewSource" title="view plain" style="color:rgb(160,160,160);text-decoration:none;border:none;">view
plain <a href="http://blog.csdn.net/shangboerds/article/details/48049665#" rel="nofollow" class="CopyToClipboard" title="copy" style="color:rgb(160,160);text-decoration:none;border:none;">copy
<div style="width:22px;z-index:99;">
<span style="font-size:14px;">
