BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  FindKey using nulls on a *clientdataset          BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) View previous topic :: View next topic   Author Message Frank Burleigh Guest Posted: Thu May 13, 2004 10:41 pm    Post subject: FindKey using nulls on a *clientdataset Imagine one of the ClientDataSet descendents has been populated from the data server using its commandtext. Now I want to FindKey within those results, say, to edit the record in a dialog. There are no data aware components involved. How does one include NULL in the FindKey (the help suggests this scenario has been contemplated)? In BCB6, FindKey(ARRAYOFCONST((an_int,a_string)) ) gets me part of the way there, but it's unclear how NULL for fields further right should be specified. Find may be treating elements of the key that aren't specified as NULL, bt it does sometimes happen that you need to specify a field further right, as in FindKey(ARRAYOFCONST((an_int,a_string,NULL,something_else)) ) Also, what about datetimes--TVarRec doesn't seem to include that as a type. Maybe one could take it as a string... Thanks. PS: I ask here because of the low traffic in the cppbuilder parallel group. -- Frank Burleigh Indiana University School of Law [email]burleigh (AT) indiana (DOT) edu[/email] Back to top Bill Todd (TeamB) Guest Posted: Thu May 13, 2004 11:59 pm    Post subject: Re: FindKey using nulls on a *clientdataset Have you tried the NULL keyword? Questions about ClientDataSet belong in the datasnap newsgroup since CDS is part of DataSnap. -- Bill (TeamB) (TeamB cannot respond to questions received via email) Back to top Frank Burleigh Guest Posted: Fri May 14, 2004 6:36 pm    Post subject: Re: FindKey using nulls on a *clientdataset Bill Todd (TeamB) wrote: Quote: Have you tried the NULL keyword? Questions about ClientDataSet belong in the datasnap newsgroup since CDS is part of DataSnap. -- Bill (TeamB) (TeamB cannot respond to questions received via email) Yes. 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