聚集索引、非聚集索引和复合索引
1. 聚集索引
定义参考维基百科:
英文解释:
Clustering alters the data block into a certain distinct order to match the index, resulting in the row data being stored in order. Therefore, only one clustered index can be created on a given database table. Clustered indices can greatly increase overall speed of retri......