On Tue, May 10, 2016 at 4:36 PM Sameer Kumar <sameer.ku...@ashnik.com> wrote:
> On Tue, May 10, 2016 at 4:26 PM Nicolas Paris <nipari...@gmail.com> wrote: > >> Hello, >> >> What is the way to build a binary format (instead of a csv) ? Is there >> specification for this file ? >> http://www.postgresql.org/docs/9.5/static/sql-copy.html >> > >> >> Could I create such format from java ? >> > > You can use COPY JDBC API to copy to STDOUT and then compress it before > you use usual Java file operations to write it to a file. You will have to > follow the reverse process while reading from this file and LOADING to a > table. > > But why would you want to do that? > > >> >> I guess this would be far faster, and maybe safer than CSVs >> > > I don't think assumption is right. COPY is not meant for backup, it is for > LOAD and UN-LOAD. > > What you probably need is pg_dump with -Fc format. > http://www.postgresql.org/docs/current/static/app-pgdump.html > > Like someone else suggested upthread you can use Binary format in COPY command (default is text) > >> Thanks by advance, >> > -- > -- > Best Regards > Sameer Kumar | DB Solution Architect > *ASHNIK PTE. LTD.* > > 101 Cecil Street, #11-11 Tong Eng Building, Singapore 069 533 > > T: +65 6438 3504 | M: +65 8110 0350 | www.ashnik.com > -- -- Best Regards Sameer Kumar | DB Solution Architect *ASHNIK PTE. LTD.* 101 Cecil Street, #11-11 Tong Eng Building, Singapore 069 533 T: +65 6438 3504 | M: +65 8110 0350 | www.ashnik.com
