数据库性能调优向来是 DBA 们最头疼的工作之一。面对动辄上百行的复杂 SQL，到底该建什么索引、建在哪里、建几个，往往需要丰富的经验支撑和反复试错。建少了，查询依然慢；建多了，写入性能受影响，磁盘空间也跟着遭殃。 更现实的问题是，很多业务上线前没时间仔细调优，上线后出了问题才救火式地排查。生产环境又不能随便试错，建错了索引想删还得等业务低峰期。 如今，这道难题有了更聪明的解法。腾讯云数据库 Po ...

The most important performance-tuning technique available is having the needed indexes created on the tables to ensure that the SQL Server database engine is able to get the data that it needs to as ...

First introduced in SQL Server 2012, columnstore indexes can give you major performance gains -- provided you have the right workloads. Here's how columnstore indexes work and what types of data work ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Dany Lepage discusses the architectural ...

Indexing is a critical part of database optimization. Indexing can dramatically increase query speed. However, DBAs still struggle with finding optimal indexes or optimal SQL plans. DBTA held a ...