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Article #1924Re: Quickest method to Transfer data from DB to another
From: Daniel Stevenson
Date: Wed, 21 Jan 2004 01:17
Date: Wed, 21 Jan 2004 01:17
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3459 bytes
sorry for the delay, I haven't looked my messages for a while. In short, I can't do bulk transfer of data because the structure of fields in the new database tables may have changed (ie. table1 in db1 may have 5 fields, but table1 in db2 may have had an extra field added or a field deleted but all remaining fields and their data is still retained and carried across to db2). We also use Access and MySQL, MySQL is very tolerant and is a lot more powerful than Access but I'm trying to find something that is common accross both db types. Using SELECT INTO misses out on most of the field details, fields of type Double may transfer across as type Integer or they may lose their ability for 'allowing zero length inputs' therefore currupting to application when using the 'new' database. Thanks for the suggestions, I'm open to anything to assist, but I think I've forced myself into a corner and am forced to take a long time to transfer the data across. "Palmetzhofer Dietmar" <xxremovethisxx_dietmar.palmetzhofer@boku.ac.at> wrote in message news:40027be5@newsgroups.borland.com... > OK, now I saw it. You are using Access. > Have you tried using the "SELECT ... INTO"-statement. With this statement > you can import a whole Table into a new DB. > Greetings, > Didi > > "Daniel Stevenson" <d.stevenson@ocreage.com.au> schrieb im Newsbeitrag > news:400222b2@newsgroups.borland.com... > > I'm currently looking into alternate (and hopefully faster) ways of moving > > data from one database to another where the field names are the same in > each > > table and in some situations where some fields are not present within the > > new database. > > > > The original database has tables that are related to one another (ie. are > in > > master/detail relationship) and therefore data integrity needs to be > > maintained > > > > I currently move one record across to the new database at a time, then > check > > all other tables for records that are related to the master record and > copy > > those across before incrementing the master record, therefore keeping all > > the records in their correct relationship. > > I'm finding this method very slow especially with a database holding over > > 50,000 records. > > > > I was wondering if there was a bulk method of copying data or an SQL > method > > that might be faster. > > > > I'm currently using BCB6 with ADO and an Access database. > > > > Thanks > > > > > >
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10698b,3afb015c65de2408 X-Google-Attributes: gid10698b,public X-Google-ArrivalTime: 2004-01-20 17:39:45 PST From: "Daniel Stevenson" <d.stevenson@ocreage.com.au> Newsgroups: borland.public.cppbuilder.database.ado References: <400222b2@newsgroups.borland.com> <40027be5@newsgroups.borland.com> Subject: Re: Quickest method to Transfer data from DB to another Date: Wed, 21 Jan 2004 12:17:48 +1100 Lines: 69 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 NNTP-Posting-Host: 202.174.228.150 Message-ID: <400dd33c@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1074647868 202.174.228.150 (20 Jan 2004 17:17:48 -0700) Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail