SQL2008系统统计函数代码,MSSQL代码库,德仔网

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【MSSQL】 SQL2008系统统计函数
作者:kkun / 发布于2011/8/7/ 915
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* SQL2008系统统计函数 */</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@CONNECTIONS</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@CPU_BUSY</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@IDLE</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@IO_BUSY</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@PACK_RECEIVED</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@PACK_SENT</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TIMETICKS</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TOTAL_ERRORS</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TOTAL_READ</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TOTAL_WRITE</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 下面的示例显示了如何返回截至当前日期和时间的登录尝试次数。</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Today's Date and Time   Login Attempts</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">----------------------- --------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">2011-08-03 10:59:27.507 199193667 */</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Today'</span><span style="color: rgb(0,96,128)">'s Date and Time'</span>,@@CONNECTIONS <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Login Attempts'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
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 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 以下示例显示了返回当前日期和时间之前的 SQL Server CPU 活动。为了避免将此值转换为微秒时出现算术溢出，此示例将其中一个值转换为 float 数据类型。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">CPU microseconds       As of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">---------------------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">1825814468750          2011-08-03 10:59:12.553*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@CPU_BUSY</span> * <span style="color: rgb(0,0,255)">CAST</span>(@@TIMETICKS <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,0,255)">FLOAT</span>) <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'CPU microseconds'</span>, GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'As of'</span> ;</pre>
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 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 下面的示例返回在开始时间和当前时间之间 SQL Server 已经用于执行输入/输出操作的毫秒数。为了避免将值转换为微秒时出现算术溢出，此示例将其中一个值转换为 float 数据类型。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">IO microseconds        as of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">---------------------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">13459500000            2011-08-03 10:59:38.340*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> @@IO_BUSY*<span style="color: rgb(0,0,255)">CAST</span>(@@TIMETICKS <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,0,255)">FLOAT</span>) <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'IO microseconds'</span>, GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'as of'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 以下示例将返回 SQL Server 自启动到当前时间的空闲毫秒数。为了避免将值转换为微秒时出现算术溢出，此示例将其中一个值转换为 float 数据类型。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Idle microseconds      as of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">---------------------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">45520113250000         2011-08-03 10:59:48.177*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@IDLE</span> * <span style="color: rgb(0,0,255)">CAST</span>(@@TIMETICKS <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,0,255)">FLOAT</span>) <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Idle microseconds'</span>,GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'as of'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
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 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 下面的示例返回在开始时间和当前时间之间 SQL Server 已经用于执行输入/输出操作的毫秒数。为了避免将值转换为微秒时出现算术溢出，此示例将其中一个值转换为 float 数据类型。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">IO microseconds        as of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">---------------------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">13459656250            2011-08-03 10:59:57.417*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> @@IO_BUSY*<span style="color: rgb(0,0,255)">CAST</span>(@@TIMETICKS <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,0,255)">FLOAT</span>) <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'IO microseconds'</span>,GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'as of'</span></pre>
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 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 返回 SQL Server 自上次启动后从网络读取的输入数据包数。</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Packets Received</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">----------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">229934446*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@PACK_RECEIVED</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Packets Received'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 返回 SQL Server 自上次启动后写入网络的输出数据包个数。 */</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@PACK_SENT</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Pack Sent'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 返回每个时钟周期的微秒数。每个时钟周期的时间量依赖于计算机。操作系统的一个时钟周期是 31.25 毫秒，或是三十分之一秒。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Time Ticks</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">-----------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">31250*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TIMETICKS</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Time Ticks'</span>;</pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 返回自上次启动 SQL Server 之后 SQL Server 所遇到的磁盘写入错误数。以下示例显示了 SQL Server 到当前日期和时间为止所遇到的错误数。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Errors      As of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">----------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">0           2011-08-03 11:00:20.163*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TOTAL_ERRORS</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Errors'</span>, GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'As of'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 返回 SQL Server 自上次启动后由 SQL Server 读取（非缓存读取）的磁盘的数目。以下示例显示了如何返回到当前日期和时间为止的磁盘读写总次数的过程。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Reads       Writes      As of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">----------- ----------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">5287348     9854759     2011-08-03 11:00:27.910*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TOTAL_READ</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Reads'</span>, <span style="color: rgb(204,102,51)">@@TOTAL_WRITE</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Writes'</span>, GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'As of'</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px">
 </pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">/* 返回自上次启动 SQL Server 以来 SQL Server 所执行的磁盘写入数。以下示例显示了如何返回到当前日期和时间为止的磁盘读写总次数的过程。 </span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">Reads       Writes      As of</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">----------- ----------- -----------------------</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: rgb(244,244,244); margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,128,0)">5287348     9854796     2011-08-03 11:00:34.880*/</span></pre>
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<pre style="text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: "Courier New", courier, monospace; direction: ltr; color: black; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: rgb(0,0,255)">SELECT</span> <span style="color: rgb(204,102,51)">@@TOTAL_READ</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Reads'</span>, <span style="color: rgb(204,102,51)">@@TOTAL_WRITE</span> <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'Writes'</span>, GETDATE() <span style="color: rgb(0,0,255)">AS</span> <span style="color: rgb(0,96,128)">'As of'</span></pre>
</div>
试试其它关键字
　统计函数　
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kkun贡献的其它代码(1)
.SQL2008系统统计函数