Tom Lane wrote: >> CREATE TABLE data_a (CHECK (name LIKE varchar 'a%') >> ) INHERITS (data); >> -- >> CREATE TABLE data_b (CHECK (name LIKE varchar 'b%') >> ) INHERITS (data); > > That's not going to work because the planner is unable to prove anything > about the behavior of LIKE --- there is nothing in the system that > offers a relationship between the = operator and the LIKE operator. > You'll need something like > > CHECK (name >= 'a' AND name < 'b') > CHECK (name >= 'b' AND name < 'c') > > etc. (These work for a query like "WHERE name = 'foo'" because > the >= < and = operators are all members of the same btree opclass, > so the planner knows how to reason about them.) > > regards, tom lane Thank you, it works! Cheers, jamcito ---------------------------------------------------------------------- Jestes kierowca? To poczytaj! >>> http://link.interia.pl/f199e
