Absolute Value of a Number

If the argument is a negative number, then the exponent is the same as the exponent of the absolute value of that number.

如果参数为负数，则数字的指数与该数字的绝对值的指数相同。

This statistic does not represent an absolute indication of the number of users, but a relative one to the SERVER_SESSION_TIMEOUT value.

这一统计数据不代表用户数的绝对指示，但却相对于SERVER_SESSION _ TIMEOUT值。

Note: If the number of sequential scans exceeds MAXINT (more than 2 billion), it will roll over to a negative number - hence, we ask for the absolute value. Here are the results from that select.

注意：如果顺序扫描数超过MAXINT(20多亿)，它将变成一个负数—因此，我们需要绝对值。