My $command = $_ || die 'No SQL command!' You build a function in A like this: CREATE OR REPLACE FUNCTION send_data( VARCHAR )
#Postgres copy data from one table to another series#
Then PostgreSQL can join some Perl modules through series of the following commands at the end of nf for the database A: plperl.on_init='use DBI ' I use the procedural language plperlu (unsafe Perl procedural language) for it.ĭescription (all was done on a Linux server):Ĭreate plperlu language in your database A Foreign data wrappers allow the creation of foreign tables through the Postgres FDW which makes it possible to access a remote table (on a different server and database) as if it was a local table.Īctually, there is some possibility to send a table data from one PostgreSQL database to another. Postgres introduced "foreign data wrapper" in 9.1 (which was released after the question was asked). createdb mydb -E UTF8 (you don't have to specify UTF8 encoding, but I always. Copy db.sql to the new server (specific command depends on OS) Go to the new server. Here's a couple of commands from the above link: Create the backup: pgdump mydb > db.sql. If you really need to get data from a distinct PostgreSQL database, another option - mentioned in Grant Johnson's answer - is dblink, which is an additional module (in contrib/). You could dump the database using pgdump and then restore it on the new server using psql. If you really have two distinct PostgreSQL databases, the common way of transferring data from one to another would be to export your tables (with pg_dump -t ) to a file, and import them into the other database (with psql). pgdump -Fc -f output.dump -t tablename databasename (dump 'tablename' from database 'databasename' into file 'output. A PostgreSQL database can have many schemas, each one with its tables and views, and you can copy from one schema to another with the schema.table syntax. pgdump allows the dumping of only select tables. Step 2: Copy the dump file to the remote server. pgdump -U postgres -d sourcedatabase -f sourcedatabase.sql. If you come from MySQL: what MySQL calls (loosely) " databases" are " schemas" in PostgreSQL - sort of namespaces. To do so the following commands need to be followed: Step 1: Create a Dump file of the source database. Databases are isolated in PostgreSQL when you connect to a PostgreSQL server you connect to just one database, you can't copy data from one database to another using a SQL query.
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