sql server maintenance plan wizard

sides of the 1 times. Hash connections are implemented by establishing a hash table in memory. This consumes more memory and consumes tempdb if memory is low. But it's not like merging connections that requires both sides to be orderly. Delete the primary key of the userinfo and the clustered index in it, and if you execute the following SQL to remove the clustered index, two sequential input SQL

Objective An analysis of the impact of SQL Server focused indexes on nonclustered indexes we talked about the effect of clustered indexes on nonclustered indexes, the performance optimization that the database has been emphasizing, so this section we talk about using the index to see how the query execution plan is, short content, in-depth understanding. View q

_t WHERE c = N '; --Actual 9,900 strips Goset showplan_all OFF; GO The estimated number of rows for the resulting query plan is as shown The estimated number of rows displayed shows that the estimated results are accurate for varchar values (no hidden data type conversions are required). However, for the nvarchar value, regardless of whether the specified value is only one data, or 8,900 data matches, the estimated result is 99.0099, which i

Tags: SQL Server remote MaintenanceNow that many applications are in the cloud, the database requires remote management and maintenance, then the web-based approach is more secure and convenient.Treesoft database management software uses the Java development, uses the stable common SPRINGMVC+JDBC architecture, realizes the Web-based method to the

SQL Server Cache schedule-clears the cache plan that is used only once

task name and other details:　　4. On the steps page of the New Task dialog box, click New and enter the SQL command for the user database.　　5. On the Advanced page of the New Task Step dialog box, enter the name of the output file that reports the fragmentation analysis results:　　6. Click the OK button to return to the new Job dialog box;7. On the schedule page of the New Task dialog box, click New Schedule and enter the appropriate

Step one: See if maintenance is required to see if scan density/scan density is 100% DECLARE @table_id int SET @table_id=object_id (' table name ') DBCC SHOWCONTIG (@table_id) Step two: Refactor SQL Server database table indexes DBCC DBREINDEX (' table name ', PK_ index name, 100) Redo the first step, such as finding the scan

@LastValue = CONVERT (VARCHAR (), Min (value), 120),@LatestValue = CONVERT (VARCHAR (), Max (value), 120)From(SELECT TOP 2 valueFromSys.partition_range_valuesWHERE function_id = @P_Fun_IdORDER by VALUE DESC) PRVSET @differ =datediff (Dd, @LastValue, @LatestValue)SET @New_Range_Value =dateadd (Dd, @differ, CONVERT (DATE, @LatestValue))SET @sql = ' 'SET @sql = ' ALTER Partition FUNCTION ' + @P_Fun_Name+ ' ()

Label:--Maintenance Database---- Trigger -- --Overview：Note:a trigger is a special type of stored procedure，used to enforce business rules。 On invocation, triggers cannot be called directly by the user through T-SQL statements, as stored procedures do, but require the execution of INSERT, UPDATE, delete events that occur on the database to fire the automatic execution of the trigger. Therefore, when creatin

non-overwrite update, it will cause the movement of the data rows during the page splitting process:(1) The move of the clustered index has no effect on the nonclustered index, because the key value of the clustered index is stored in the nonclustered index, and the split does not change the key value;(2) The data page in the heap table splits, leaving a forward pointer at the original record to tell the nonclustered index where to find the new record;So the movement of data rows does not cost

, and the request involves using a partitioned table, the optimizer can optimize the request to find the appropriate data only on the appropriate partition. ( more about the partition table, you can refer to our site published in the "Understanding of the Section table" series of articles )Although it is said that we are talking about distributed partitioned views, in fact, in SQL Server 2005 (and later ver

,@IndexName,@PctFrag while @ @FETCH_STATUS = 0BEGIN IF @PctFrag between 20.0 and 40.0 BEGIN SET @Defrag =N'ALTER INDEX' + @IndexName + ' on' + @DBName + '.' + @SchemaName + '.' + @TableName + 'REORGANIZE' EXECsp_executesql@Defrag PRINT 'Reorganize Index:' + @DBName + '.' + @SchemaName + '.' + @TableName +'.' + @IndexName END ELSE IF @PctFrag > 40.0 BEGIN SET @Defrag =N'ALTER INDEX' + @IndexName + ' on' + @DBName + '.' + @SchemaName + '.' + @Tab

Here are some of the information found online to solve this problem:Get this job_id first:USE [msdb]GO/****** Object: Job [dbbackup_diff.Subplan_1] Script Date: 04/08/2015 10:22:46 ******/@job_id=N‘588acfb8-630b-41c3-aa47-90d3671bda90‘@delete_unused_schedule=1GOAccording to job_id to subplan_id:select subplan_id FROM msdb.dbo.sysmaintplan_subplans where job_id=‘588acfb8-630b-41c3-aa47-90d3671bda90‘subplan_idFE56B397-4704-4AA7-BE49-767C1574E7D0Remove subplan_id from system tables Msdb.dbo.sys

In the application system, especially in the online transaction processing system, the data query and processing speed has become the standard to measure the success or failure of the application system. And the use of index to speed up data processing has become the majority of database users to accept the optimization method. Based on good database design, efficient use of indexes is the basis for SQL Server