Re: string_to_array eats too much memory?

> Is this documented somewhere? Also I noticed that tsearch2 treats ":"
> as a special character. Are there any special characters? If so where
> are they documented?

You can avoid confusions with special character by quoting:
# select '''wow:'''::tsvector; tsvector
---------- 'wow:'
(1 row)

':' is separator of lexeme and its position information
-- 
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
  WWW: http://www.sigaev.ru/