帮忙解释一下这段话的意思

[hkzhou]

Table: #hlb_kh_a____01001180015081084 scan count 0, logical reads: (regular=20245 apf=0 total=20245), physical reads: (regular=0 apf=0 total=0), apf IOs used=0
Table: #hlb_kh_a____01001180015081084 scan count 1, logical reads: (regular=269 apf=0 total=269), physical reads: (regular=0 apf=0 total=0), apf IOs used=0
Table: qc_khdzb scan count 1, logical reads: (regular=375 apf=0 total=375), physical reads: (regular=0 apf=0 total=0), apf IOs used=0
Table: Worktable1 scan count 9495, logical reads: (regular=55933 apf=0 total=55933), physical reads: (regular=0 apf=0 total=0), apf IOs used=0
Table: Worktable2 scan count 9495, logical reads: (regular=27042 apf=0 total=27042), physical reads: (regular=0 apf=0 total=0), apf IOs used=0
Total writes for this command: 1679
Total writes for this command: 0

[hobbylu]

表的扫描次数0，逻辑读（正常=20245 异步预取=0，总共=20245），物理读：（....)异步预取io使用0
这个是对io统计的结果

[hkzhou]

能不能说详细一点 我还是不懂！！

[hobbylu]

这个数据是有关于你对表做操作的时候系统产生的对你的IO统计的结果.
逻辑读就是读cache中的页面,物理读是将数据页从磁盘中读入到内存,也就是说cache中

[hkzhou]

谢谢