感觉下面的数据不对劲呢？！count(*)的数据比加where条件的反而少！我靠
[PHP]
SQL> select count(IDA2A2) from stringvalue where CLASSNAMEKEYA5 is null;
COUNT(IDA2A2)
-------------
92545650
SQL>
SQL> select count(IDA2A2) from stringvalue;
COUNT(IDA2A2)
-------------
92545438
SQL>
SQL> select count(*) from stringvalue;
COUNT(*)
----------
92544581
Executed in 12.14 seconds
SQL>
...........................................................
[/PHP]
AIX5.3, 10.2.0.2 单实例
