Hi
I need some help in Data Base programing.
How can I add a new filde, to an exists table, in run time ?
Thanks for your help.
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Hi,
It depends on the database (acces, oracle.. etc) but an easy way to do it in most of the cases it´s by excuting an SQL (I hope you know how to).
sql = "ALTER TABLE table_name ADD field DOUBLE NOT NULL";
query1.sql:=sql;
query1.execute;
and that's all (In this example I supose thath query1 it´s an ADO component and it´s connected to you database)
Regards
JHL
hi dear friend ...
it is so easy. just download this complete Project. all that you want is here :
+) http://mizan3.com/delphi/d
Regards friend.
Usually it´s the best form. But there are other functions that you can use, but depend of the component that you are useing to access the table. By ex. if you are using ADO TABLE, you can make modifications as Alter with adotable1.fields.add(Tfiel
But I think that the best and fastest way it´s by SQL( Alter)
Regards
JHL
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by: kretzschmarPosted on 2005-03-09 at 05:03:01ID: 13495267
query.sql.text := 'alter table TABLENAME add (COLUMNNAME TYPE)'
query.execsql;
just from head -> means untested and typos possible
i recommend to refere your databasemanual about the correct syntax
meikl ;-)