如果您想使用querySql查询,Reader部分脚本代码示例如下(SQL Server数据源是sql_server_source,待查询的表是dbo.test_table,待查询的列是name)。 {"stepType":"sqlserver","parameter":{"connection":[{"querySql":["select name from dbo.test_table"],
tsts.AddRange(dc.tstTests.Where(x=>Guides.Skip(i*2000).Take(2000).Contains(x.tstGuid))); } this.DataContext=tsts;
--设置undo_retention 参数,默认是900s ,推荐设置为设置为10800,即3个小时 show parameter undo_retention; alter system set undo_retention=10800 scope=spfile; --查看undo表空间大小 select sum(bytes)/1024/1024 "current undo size(M)" from dba_data_files where tablespace_name='UNDOTBS1'; --增大und...
literal_constant can be of any SQL Server system data type that can be expressed as a literal constant. The data type of literal_constant must be implicitly convertible to the data type that @variable_name references in the query. OPTIMIZE FOR can counteract the optimizer's default ...
<processModel requestQueueLimit="100000"/> 1. 2. 3. 4. 修改注册表,调整IIS 7支持的同时TCPIP连接数 由原来的默认5000改为100000。 reg add HKLM\System\CurrentControlSet\Services\HTTP\Parameteris /v MaxConnections /t REG_DWORD /d 100000
This requires that the connection will need to have permission to read data from the SQL Server as well.A Primary Key is required for the following operations:- GetItem- PatchItem- DeleteItem Aggregation transformation parameter support Get rows (V2) Only the following Aggregation transformations ...
'DISABLE_OPTIMIZER_ROWGOAL' 導致SQL Server 產生計劃,其不會對包含這些關鍵詞的查詢使用數據列目標修改:- TOP- OPTION (FAST N)- IN- EXISTS此提示名稱相當於 追蹤旗標 4138。 'DISABLE_PARAMETER_SNIFFING' 指示查詢優化器在使用一或多個參數編譯查詢時,使用平均數據分佈。 此指令會讓查詢計劃與編譯查詢時第一...
'DISABLE_OPTIMIZER_ROWGOAL' 导致SQL Server 生成计划,该计划不会对包含以下关键字的查询使用行目标修改:- TOP- OPTION (FAST N)- IN- EXISTS此提示名称等效于 跟踪标志 4138。 'DISABLE_PARAMETER_SNIFFING' 指示查询优化器使用平均数据分布,同时使用一个或多个参数编译查询。 此指令使查询计划独立于编译查询时首...
value due to client load, SQL Server can't free memory unless the value ofmin server memory (MB)is reduced. For example, when several instances of SQL Server are installed concurrently in the same server, consider setting themin server memory (MB)parameter to reserve memory for an instance....
Applies to: SQL Server (starting with SQL Server 2012 (11.x) Service Pack 3, SQL Server 2014 (12.x) Service Pack 2 and Azure SQL Database. The maximum memory grant size inPERCENTof configured memory limit. The query is guaranteed not to exceed this limit if the query is running in ...