话归正题,与MYSQL,PG 不同的SQL SERVER 其实在慢查询排查中一直是没有什么日志的,而通过DMV 或者工具来查询总觉得和其他两种数据库比较是有一定缺陷的。 但是从SQL SERVER 2016 开始SQL SERVER 也意识到这点,添加了一个功能。如何打开和使用follow me. 1 打开 SSMS (别说不知道什么是SSMS) SQL SERVER
话归正题,与MYSQL,PG 不同的SQL SERVER 其实在慢查询排查中一直是没有什么日志的,而通过DMV 或者工具来查询总觉得和其他两种数据库比较是有一定缺陷的。 但是从SQL SERVER 2016 开始SQL SERVER 也意识到这点,添加了一个功能。如何打开和使用follow me. 1 打开 SSMS (别说不知道什么是SSMS) SQL SERVER manageme...
Query Store is often described as a “flight recorder” for SQL Server giving SQL Server the ability to store query text, query plans, and query performance history at the database scope for troubleshooting and performance analysis. Query Store also provides a method to force which plans a quer...
如果SERVER_NAME欄位顯示別台SQL Server主機名稱,表示這個備份檔是從別台SQL Server複製過來並且在這台執行過RESTORE 2.使用以下TSQL查詢還原紀錄 scroll 复制 SELECT rs.[restore_history_id] ,rs.[restore_date] ,rs.[destination_database_name] ,bmf.physical_device_name ,rs.[user_name] ,rs....
Use the ‘To New SQL Window’ option: In theQuery Historygrid, right-click the selected query and then selectTo New SQL Window. This command opens the query in a new SQL document. Export query history to a .csv file 1. On the toolbar of the Query History document, selectExport to CS...
SELECT[Tax Rate], [LineageKey], [SalespersonKey],SUM(Quantity)ASSUM_QTY,SUM([Unit Price])ASSUM_BASE_PRICE,COUNT(*)ASCOUNT_ORDERFROMFact.OrderHistoryExtendedWHERE[OrderDateKey]<=DATEADD(dd,-73,'2015-11-13')GROUPBY[Tax Rate], [LineageKey], [SalespersonKey]ORDERBY[Tax Rate], [LineageKe...
Force the previous plan from the history, if it proved to be better. Use Force Plan button in Regressed Queries to force selected plan for the query. For detailed description of the scenario refer to Query Store: A flight data recorder for your database blog. Identify and tune top resource...
(15.x). It is enabled by default in theREAD_WRITEmode for new databases starting with SQL Server 2022 (16.x). To enable features to better track performance history, troubleshoot query plan related issues, and enable new capabilities in SQL Server 2022 (16.x...
If you search for non-current row versions only, you should query the history table directly, for best query performance. UseALLwhen you need to query current and historical data without any restrictions. SQL /* Query using BETWEEN...AND sub-clause*/SELECT[DeptID], [DeptName],...
It is enabled by default in the READ_WRITE mode for new databases starting with SQL Server 2022 (16.x). To enable features to better track performance history, troubleshoot query plan related issues, and enable new capabilities in SQL Server 2022 (16.x), we recommend enabling Query Store ...