Mysql 5.5 Partittioning row field

[Shubham Jain]

I have created a partition on my table based on a column value. I am using mysql 5.5

ALTER TABLE tab partition by list(ARCHIVE) (partition p0 values in (0), partition p1 values in (1));

Now when I am running following commands:-

1. select count(*) from tab where archive=0;
In this, no of rows is coming as 198182

2. explain partitions select count(*) from tab where archive=0;
In output of this command, in row field I am getting 195934

Can someone explain why there is a difference between 2 results? Is rows field in explain partitions mean something else?

Please explain.