2016-02-22 18:00 GMT+02:00 Thomas Kellerer <spam_ea...@gmx.net>: > I assume that this has to do with the fact that char(n) is blank padded to > 20 character. >
Yes, this was my thought too, but I do not understand what is going on in details. To be able to correctly compare that to a text value, sn_c has to be casted > to text and then the index (which contains blank padded values) can not be > used any more. > Well, for `varchar` type Postgres is able to do `varchar` -> `bpchar` cast for my constant. I do not understand why for `text` it cannot and casts column instead. -- Victor Y. Yegorov
