SQL Server中为什么进程自己block自己 1.你是说有2个或以上人员在执行该语句吗?--不是2.怎样通过执行计划看是否有并行操作?谢谢你就用ctrl+m然后执行这个语句,看看执行计划里面有没有【并行xx】的那个操作符 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; DECLARE @dbname SYSNAME SET @dbname = QUOTENAME (DB_NAME ()); WITH XMLNAMESPACES (DEFAULT 'http://schemas.microsoft.com/sqlserver/2004/07/showplan') SELECT [stmt].[value](N'(@StatementText)[1]', N'VARCHAR(MAX)'), [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Schema)[1]', N'VARCHAR(128)'), [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Table)[1]', N'VARCHAR(128)'), [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Column)[1]', N'VARCHAR(128)'), [ic].[DATA_TYPE] AS [ConvertFrom], [ic].[CHARACTER_MAXIMUM_LENGTH] AS [ConvertFromLength], [t].[value](N'(@DataType)[1]', N'VARCHAR(128)') AS [ConvertTo], [t].[value](N'(@Length)[1]', N'INT') AS [ConvertToLength], [query_plan] FROM [sys].[dm_exec_cached_plans] AS [cp]CROSS APPLY [sys].[dm_exec_query_plan]([plan_handle]) AS [qp]CROSS APPLY [query_plan].[nodes]('/ShowPlanXML/BatchSequence/Batch/Statements/StmtSimple')AS [batch]([stmt]) CROSS APPLY [stmt].[nodes]('.//Convert[@Implicit="1"]') AS [n]([t]) JOIN [INFORMATION_SCHEMA].[COLUMNS] AS [ic] ON QUOTENAME ([ic].[TABLE_SCHEMA]) = [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Schema)[1]', N'VARCHAR(128)') AND QUOTENAME ([ic].[TABLE_NAME]) = [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Table)[1]', 'VARCHAR(128)') AND [ic].[COLUMN_NAME] = [t].[value]('(ScalarOperator/Identifier/ColumnReference/@Column)[1]', 'VARCHAR(128)') WHERE [t].[exist]('ScalarOperator/Identifier/ColumnReference[@Database=sql:variable("@dbname")][@Schema!="[sys]"]') = 1 OPTION (MAXDOP 1);GO也可以直接执行这个 关于数据筛选的问题 明天要交项目了,跪求大家帮助 sql server 数据库服务器 用企业管理器能通过公网建连接么? 怎么合并这两个sql语句? 如何判断前3天这个SMS_HistoryRecord表有没有记录 可以实现这样的触发器吗? [求救] 如何合并相时间相近的记录? 呵呵.初来sql版,大家以后多多照顾.顺便问下数据库的学法! 有星了, 散分。谢谢大家关照! SQL中的文件组到底是怎么回事? sql like问题 SQL 数据类型转换
SET @dbname = QUOTENAME (DB_NAME ()); WITH XMLNAMESPACES
(DEFAULT 'http://schemas.microsoft.com/sqlserver/2004/07/showplan')
SELECT
[stmt].[value](N'(@StatementText)[1]', N'VARCHAR(MAX)'),
[t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Schema)[1]', N'VARCHAR(128)'),
[t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Table)[1]', N'VARCHAR(128)'),
[t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Column)[1]', N'VARCHAR(128)'),
[ic].[DATA_TYPE] AS [ConvertFrom],
[ic].[CHARACTER_MAXIMUM_LENGTH] AS [ConvertFromLength],
[t].[value](N'(@DataType)[1]', N'VARCHAR(128)') AS [ConvertTo],
[t].[value](N'(@Length)[1]', N'INT') AS [ConvertToLength],
[query_plan]
FROM [sys].[dm_exec_cached_plans] AS [cp]
CROSS APPLY [sys].[dm_exec_query_plan]([plan_handle]) AS [qp]
CROSS APPLY [query_plan].[nodes](
'/ShowPlanXML/BatchSequence/Batch/Statements/StmtSimple')
AS [batch]([stmt])
CROSS APPLY [stmt].[nodes](
'.//Convert[@Implicit="1"]') AS [n]([t])
JOIN [INFORMATION_SCHEMA].[COLUMNS] AS [ic]
ON QUOTENAME ([ic].[TABLE_SCHEMA])
= [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Schema)[1]', N'VARCHAR(128)')
AND QUOTENAME ([ic].[TABLE_NAME])
= [t].[value](N'(ScalarOperator/Identifier/ColumnReference/@Table)[1]', 'VARCHAR(128)')
AND [ic].[COLUMN_NAME]
= [t].[value]('(ScalarOperator/Identifier/ColumnReference/@Column)[1]', 'VARCHAR(128)')
WHERE [t].[exist]('ScalarOperator/Identifier/ColumnReference[@Database=sql:variable("@dbname")][@Schema!="[sys]"]')
= 1
OPTION (MAXDOP 1);
GO
也可以直接执行这个