SQL Server Insert 操作效率（堆表 VS 聚集索引表）
SQL Server的Insert操作在堆表或者聚集索引表的时候，哪个效率更高？为什么高？ 之前有同事问过我这个问题，为了确保日志库的记录效率，于是我做了简单测试了，首先要先强调几点概念： 堆表：没有聚集索引的表，记录通过IAM页以及PFS页来确定哪页有空闲空间
“SQL Server的Insert操作在堆表或者聚集索引表的时候，哪个效率更高？为什么高？”
之前有同事问过我这个问题，虚拟主机，为了确保日志库的记录效率，于是我做了简单测试了，首先要先强调几点概念：
堆表：没有聚集索引的表，香港服务器，记录通过IAM页以及PFS页来确定哪页有空闲空间。
聚集索引表：有聚集索引的表，记录是根据聚集键值所在页的键值逻辑顺序维护的
Demo：如下
分别对堆表和聚集表进行5个并发线程，网站空间，每个线程各10000次循环插入
1. 堆表测试
Insert_Test (id int identity, name char(200)) go
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