Re: [INTERFACES] Fastest import?
От | Joe Dieckert |
---|---|
Тема | Re: [INTERFACES] Fastest import? |
Дата | |
Msg-id | 3710D8FE.735ACE80@cabnet.net обсуждение исходный текст |
Ответ на | Re: [INTERFACES] Fastest import? (Peter T Mount <peter@retep.org.uk>) |
Список | pgsql-interfaces |
AppGEN works nicely. Peter T Mount wrote: > On Sat, 10 Apr 1999, Matthew Hagerty wrote: > > > Greetings, > > > > What is the fastest way to import data from an ASCII file? I have ~17,000 > > records in a .DBF file that I need to get into my pg6.4.2 database. I have > > written a program that reads the .DBF file, massages the data and writes it > > out to a text file, one record per line. > > > > I initially had my program issue the insert commands instead of writing > > them to a text file, but the import took about 2 hours! We are only > > talking about 4Meg worth of data here, it should not take that long should > > it? I was hoping that once in a text file that psql < text.file would be > > faster, but it is not. Is there any way to speed this up? > > > > I was also looking at the copy command and maybe using the binary mode, but > > writing out binary data is not my idea of a good time and I'm on a deadline > > here. Is there a program out there that might take a text file of insert > > statements and convert them to a binary format that copy can use? > > > > Any insight would be greatly appreciated. > > Why use binary? Just get your program to output Tab delimited ASCII > data, and use ASCII COPY. > > Tip: Don't create your indices before the copy. It will load faster > without them. Once the data's in there, then create them. > > Peter > > -- > Peter T Mount peter@retep.org.uk > Main Homepage: http://www.retep.org.uk > PostgreSQL JDBC Faq: http://www.retep.org.uk/postgres > Java PDF Generator: http://www.retep.org.uk/pdf
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