Andreas Joseph Krogh <andreas(at)visena(dot)com> writes:
> When using E-syntax you need to double the backslash for escaping:
> andreak(at)[local]:5433 10.4 andreak=# select 'abcd'||chr(8198) ~ E'abcd\\s';
Another thing to keep in mind is that this is all locale-dependent
(specifically, LC_CTYPE, I believe). In plain old C locale, nothing
beyond the standard ASCII whitespace characters will match \s. I'm not
sure how universal it is for other locales to treat characters like
U+2006 as whitespace.
regards, tom lane