Stephen Frost <sfr...@snowman.net> wrote: > making an SQL operator for 'are these really the same bytes' to > deal with what is essentially implementation detail is _very_ > grotty.
We already have some such operators, although Andres argues that comparing to that isn't fair because we at least know it is a string of characters; we're just ignoring character boundaries and collations. Some of the operators use for the existing byte comparison opclasses are: ~<~ ~<=~ ~>=~ ~>~ Go ahead and try them out with existing text values. Andres has said that he has seen these used in production systems. = and <> aren't listed above even though they do a byte-for-byte comparison because, well, I guess because we have chosen to treat two UTF8 strings which produce the same set of glyphs using different bytes as unequal. :-/ -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
