[postgresql] Copy a table from one database to another in Postgres

Using psql, on linux host that have connectivity to both servers

( export PGPASSWORD=password1 
  psql -U user1 -h host1 database1 \
  -c "copy (select field1,field2 from table1) to stdout with csv" ) \
| 
( export PGPASSWORD=password2 
  psql -U user2 -h host2 database2 \ 
   -c "copy table2 (field1, field2) from stdin csv" )

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