sql server Count() 速度纪录
测试表中有六百五十八万九千多条数据
ID:主键
UUID:非聚集索引
数据量:
1. select COUNT(*) from [Chapter]
2. select COUNT(ID) from [Chapter]
3. select COUNT(UUID) from [Chapter]
4. select COUNT(1) from [Chapter]
5. select COUNT(*) from [CrawlerFiction].[dbo].[Chapter] with(nolock)
6. select COUNT(*) from [CrawlerFiction].[dbo].[Chapter] with(readpast)