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--> 生成测试数据: #TIF OBJECT_ID('tempdb.dbo.#T') IS NOT NULL DROP TABLE #T CREATE TABLE #T (ID VARCHAR(3),GID INT,Author VARCHAR(29),Title VARCHAR(39),Date... 阅读全文
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-- 平均物理读次数最多的SQL语句:select top 50 *, (s.total_physical_reads / s.execution_count) as avephysicalreads from sys.dm_exec_query_stats scross apply sys.dm_exec_sql_text(s.sql_handle)order by avephysicalreads desc-- 平均逻辑读次数最多的SQL语句:select top 50 *, (s.total_logical_reads / s.execution_count) as avglogical 阅读全文
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通过性能监视器监视Avg. Disk Queue Length 小于2Avg. Disk sec/Read, Avg. Disk sec/Write 小于10ms可以用数据收集器定时收集平均物理读次数最多的SQL语句:select top 50 *, (s.total_physical_reads / s.execution_count) as avephysicalreads from sys.dm_exec_query_stats scross apply sys.dm_exec_sql_text(s.sql_handle)order by avephysicalreads desc平均逻 阅读全文
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服务器为2003系统,平时都用的好好的,但是最近经常跳出了!IIS Worker Process 遇到问题关闭!第二个对话框还有个请单击此处的连接以下文件将包含在这个错误报告中:C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\1\WERc935.dir00\w3wp.exe.mdmpC:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\1\WERc935.dir00\appcompat.txt 解决办法:一、运行命令 net stop w3svc 停止IIS进程清理这个目录C:\Documents and Settings\Administrator\Lo 阅读全文
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Select a.name as Columns, b.name as TableName from syscolumns aleft join sysobjects b on a.id = b.idWhere b.type = 'U' and a.name ='Book_Code' order by b.nameb.type='U' (表), b.type='V' (视图) 阅读全文
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jQuery获取Select选择的Text和Value:语法解释:1. $("#select_id").change(function(){//code...}); //为Select添加事件,当选择其中一项时触发2. var checkText=$("#select_id").find("option:selected").text();//获取Select选择的Text3. var checkValue=$("#select_id").val();//获取Select选择的Value4. var checkIndex=$("#select_id ").get(0).selectedInde 阅读全文