======Spamfilter database comparators======
Several Spamfilter DB statements allow comparators which are listed below

If the value specified in the statement is numeric:
  * = or == compare numeric values for equality
  * <> or != compare numeric values for inequality
  * <, >, <=, >= do standard numeric comparisons
  * 
If the value specified in the statement is non-numeric:
  * = or == compare string values for equality using plain ASCII comparisons
  * <> or != compare string values for inequality using plain ASCII comparisons
  * <, >, <=, >= do string comparisons using plain ASCII comparisons
  * A '*' after each of the above comparators makes them case insensitive (eg **==* **)

Whether or not the value specified in the statement is numeric:
  * **eq** compares string values for equality using plain ASCII comparisons
  * **ne** compares string values for inequality using plain ASCII comparisons
  * **lt** does a 'less than' string comparison using plain ASCII comparisons
  * **le** does a 'less than or equals' string comparison using plain ASCII comparisons
  * **gt** does a 'greater than' string comparison using plain ASCII comparisons
  * **ge** does a 'greater than or equals' string comparison using plain ASCII comparisons
  * An 'i' after each of the above comparators makes them case insensitive (eg **nei**)
  * ~ does a [[http://www.postgresql.org/docs/9.1/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP|POSIX regular expression]] match comparison
  * !~ does a [[http://www.postgresql.org/docs/9.1/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP|POSIX regular expression]] not-match comparison
  * ~* does a [[http://www.postgresql.org/docs/9.1/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP|case insensitive POSIX regular expression]] match comparison
  * !~* does a [[http://www.postgresql.org/docs/9.1/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP|case insensitive POSIX regular expression]] not-match comparison
  * LIKE does an SQL 'LIKE' comparison
  * ILIKE does a case insensitive SQL 'LIKE' comparison