Обсуждение: Bound column and serial datatype question
Hi, I have a table like this: CREATE TABLE Kunden ( ID serial NOT NULL, CustomerNr serial NOT NULL, Name CHAR(100), ... ); Using bound columns in a form to show the customer data I don´t like to let the user updating the CustomerNr field. This is because, a normal data field is not autogenerated, but these 'serial' data fields. But I like to show the CustomerNr field in the form. Therefore, I simply made the field readonly in the form. But if I insert a new row, the fields data (defaults to 0) would be used as the new value in the table. How to avoid this ? Thanks Lothar -- Lothar Behrens www.lollisoft.de Rosmarinstr 3 My public project: 40235 Düsseldorf http://sourceforge.net/projects/lbdmf
What about using a server-side function for doing your insert? This function can simply return the id of the inserted line,and on the client-side, you open it? This is a very useful method for doing inserts. It allows you to do all kindsof initializations and sanity checks server-side. -----Message d'origine----- De : pgsql-odbc-owner@postgresql.org [mailto:pgsql-odbc-owner@postgresql.org] De la part de lothar.behrens@lollisoft.de Envoyé : mardi, 19. avril 2005 12:52 À : pgsql-odbc@postgresql.org Objet : [ODBC] Bound column and serial datatype question Hi, I have a table like this: CREATE TABLE Kunden ( ID serial NOT NULL, CustomerNr serial NOT NULL, Name CHAR(100), ... ); Using bound columns in a form to show the customer data I don´t like to let the user updating the CustomerNr field. Thisis because, a normal data field is not autogenerated, but these 'serial' data fields. But I like to show the CustomerNr field in the form. Therefore, I simply made the field readonly in the form. But if I inserta new row, the fields data (defaults to 0) would be used as the new value in the table. How to avoid this ? Thanks Lothar -- Lothar Behrens www.lollisoft.de Rosmarinstr 3 My public project: 40235 Düsseldorf http://sourceforge.net/projects/lbdmf ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
If you remove the NOT NULL definition from the CustomerNr, you can put there a NULL value too. The SQL email list is better for these questions, because they have more knoledge of these kinds of problems ... (The CustomerNr and ID columns seem to have redundant information.) Regards, Marko Ristola lothar.behrens@lollisoft.de wrote: >Hi, > >I have a table like this: > >CREATE TABLE Kunden >( > ID serial NOT NULL, > CustomerNr serial NOT NULL, > Name CHAR(100), > ... >); > >Using bound columns in a form to show the customer data I don´t like to let the user >updating the CustomerNr field. This is because, a normal data field is not >autogenerated, but these 'serial' data fields. > >But I like to show the CustomerNr field in the form. Therefore, I simply made the >field readonly in the form. But if I insert a new row, the fields data (defaults to 0) >would be used as the new value in the table. > >How to avoid this ? > >Thanks > >Lothar > >-- >Lothar Behrens www.lollisoft.de >Rosmarinstr 3 My public project: >40235 Düsseldorf http://sourceforge.net/projects/lbdmf > > > > >---------------------------(end of broadcast)--------------------------- >TIP 8: explain analyze is your friend > >
Am 23 Apr 2005 um 9:57 hat Marko Ristola geschrieben: I have solved the problem by shortly unbind the affected column. The problem, that will stay, is that I do not know, how to detect such a column by an ODBC call like SQLDescribeCol. Lothar > > If you remove the NOT NULL definition from the CustomerNr, > you can put there a NULL value too. > > The SQL email list is better for these questions, because they have > more knoledge of these kinds of problems ... > > (The CustomerNr and ID columns seem to have redundant information.) > > Regards, > Marko Ristola > > lothar.behrens@lollisoft.de wrote: > > >Hi, > > > >I have a table like this: > > > >CREATE TABLE Kunden > >( > > ID serial NOT NULL, > > CustomerNr serial NOT NULL, > > Name CHAR(100), > > ... > >); > > > >Using bound columns in a form to show the customer data I don´t like to let the user > >updating the CustomerNr field. This is because, a normal data field is not > >autogenerated, but these 'serial' data fields. > > > >But I like to show the CustomerNr field in the form. Therefore, I simply made the > >field readonly in the form. But if I insert a new row, the fields data (defaults to 0) > >would be used as the new value in the table. > > > >How to avoid this ? > > > >Thanks > > > >Lothar > > > >-- > >Lothar Behrens www.lollisoft.de > >Rosmarinstr 3 My public project: > >40235 Düsseldorf http://sourceforge.net/projects/lbdmf > > > > > > > > > >---------------------------(end of broadcast)--------------------------- > >TIP 8: explain analyze is your friend > > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 3: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@postgresql.org so that your > message can get through to the mailing list cleanly > -- Lothar Behrens www.lollisoft.de Rosmarinstr 3 My public project: 40235 Düsseldorf http://sourceforge.net/projects/lbdmf