步骤2: 使用 WITH (INDEX(IndexName)) 指定索引 根据查到的索引信息,我们可以强制执行特定的索引。示例代码如下: -- 强制使用指定的索引SELECT*FROMYourTableNameWITH(INDEX(YourIndexName))WHEREYourCondition; 1. 2. 3. 4. 注释:替换YourTableName和YourIndexName为目标表名称及索引名称,YourCondition则是查询条件。
This entry was posted in SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Server 2019 and tagged Performance Tuning, TROUBLESHOOTING, xEvents on April 15, 2020. SQL Server 2016/2017: Critical Columnstore Index Bug Has Been Fixed ...
Getting started with SQL Server Index 'xp_cmdshell' does not exist?? "Exception has been thrown by the target of an invocation" and "Rule 'Setup administrator' failed" when installing SQL server 2016 "Invalid Object Name dbo." "is not a recognized built-in function name" Problem [098] ...
在提取出来原始的查询SQL,创建索引视图,并在索引视图上创建unique cluster index和合理的nocluster index 通过索引视图改写原始的查询统计SQL语句, 改写后的SQL语句是一个索引视图替代原始的4张表,与另外一个物理表join,发现效率上没有任何改善, 观察改写后的SQL语句的执行计划,发现跟原始SQL一样,并没有走索引视图上...
数据库版本: SQL SERVER 2005 CREATETABLETEST ( IDINT, NameVARCHAR(12) ); CREATENONCLUSTEREDINDEX"[IDX_NAME]"ONTEST(Name); 因为YourSQLDba生成重组索引语句时,都会在索引名称上加上[].如果用下面SQL语句进行索引重组,就会遇到这个错误 ALTER INDEX [[IDX_NAME]] ON [dbo].[TEST] ...
Index Insight Scripts A collection of scripts to use with indexes in SQL Server Find Index Fragmentation As records are inserted, updated, and deleted, your tables and indexes become fragmented. This query will provide a list of indexes, fragmentation percentage, and record counts for each table ...
With SQL Server 2000, the functionality of SQL Server views has been expanded to provide system performance benefits. It is possible to create a unique clustered index on a view, as well as nonclustered indexes, to improve data access performance on the most complex queries. In SQL Server 200...
Include nonkey columns in a nonclustered index to avoid exceeding the current index size limitations of a maximum of 32 key columns and a maximum index key size of 1,700 bytes (16 key columns and 900 bytes prior to SQL Server 2016 (13.x)). The Database Engine doesn't consider nonkey...
database recovery (ADR)for your database,beforecreating the first index on an enclave-enabled column encrypted with randomized encryption. ADR is enabled by default in Azure SQL Database and Azure SQL Managed Instance. ADR is available but not enabled by default in SQL Server 2019 (15.x) ...
CREATE INDEX ix_c1 ON dbo.t1(c1) GO INSERT t1 VALUES (REPLICATE('1', 1700)) GO This script succeeds in SQL Server 2016 and Azure SQL Database. In earlier versions of SQL Server the CREATE INDEX statement would give a warning, and the INSERT statement would fail. ...