Distinct List (OpenInsight Specific)
At 19 MAR 1999 03:08:25PM S.Berger wrote:
I am looking for a way to pull out a distinct list. I have a table, PROTOCOL, in the table one of the fields is PI. THere can be many protocols that have the same PI. I want a list of all of the PI's that have a protocol, but I only want them to show up once each.
What do you think
S
At 22 MAR 1999 06:48AM Oystein Reigem wrote:
SB
Do you say you want a list of all the different values in a field? If that field is indexed you can do it programmatically with
list=Collect.IXVals(filename, fieldname)
that returns the list of index values for the specified indexed field in the specified file, or
Extract_SI_Keys(tablename, columnname, value, keylist)
that searches a Btree index for a specified value and returns a list of keys based on the search value.
(Or you might perhaps use a relational index.)
- Oystein -
At 22 MAR 1999 12:34PM SBerger wrote:
Thanks, that first one sounds like what I am looking for.
S
At 22 MAR 1999 02:01PM Oystein Reigem wrote:
SB,
It's fine as long as you haven't got *too* many values.
- Oystein -