Am 22.04.13 12:36, schrieb Thomas Kellerer:
> Wolfgang Meiners, 22.04.2013 12:19:
>> Is there a simpler way to check for overlapping timeintervals? I ask
>> this question, because i have more similar tables with similar layout
>> and would have to write similar functions aga
Hi,
I am on postgresql 9.1 and use at table like
CREATE TABLE timetable(
tid INTEGER PRIMARY KEY,
gid INTEGER REFERENCES groups(gid),
day DATE,
s TIME NOT NULL, --- start
e TIME NOT NULL, --- end
CHECK (e > s));
Now, i need a constraint to prevent overlapping timeintervals in
