with spaces to the specified width <replaceable>n</>, and are
stored and displayed that way. However, the padding spaces are
treated as semantically insignificant. Trailing spaces are
- disregarded when comparing two values of type <type>character</type>,
+ disregarded when non-pattern comparing two values of type <type>character</type>,
and they will be removed when converting a <type>character</type> value
to one of the other string types. Note that trailing spaces
<emphasis>are</> semantically significant in
- <type>character varying</type> and <type>text</type> values.
+ <type>character varying</type> and <type>text</type> values, and
+ when using pattern matching comparisons, e.g. <literal>LIKE</>,
+ regular expressions.
</para>
<para>