How to copy table from server to another in PostgreSQL?
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I have two servers on PostgreSQL 8.4:
Now i want to copy table from server1 and put it in data base on server2. Its possible to do?
I try do like in @Valery Viktorovsky's answer:
pg_dump --server1:5432 --encoding=utf8 --no-owner --username=postgres --123456 np_point > D:\np_point.sql psql --server2:5432 --username=postgres mrsk -f D:\np_point.sql
and get error:
ERROR: syntax error at or near "pg_dump" LINE 1: pg_dump --server1:5432 --encoding=utf8 --no-owner --use...
The safest way is to use pg_dump.
pg_dump --host server1 --encoding=utf8 --no-owner --username=foo --password -t table_name db_name > server1_db.sql psql --host server2 --username=foo db_name -f server1_db.sql
How to copy table from server to another in PostgreSQL?, The safest way is to use pg_dump. pg_dump --host server1 --encoding=utf8 --no-owner --username=foo --password -t table_name db_name Recently, I had taken PostgreSQL DBA interview and asked question like “How to migrate table data from one server to another in PostgreSQL?” A candidate said, create table backup file using pg_dump -> copy that file in source server -> use pg_restore to restore it. Don’t you think, so that above process is very long? Check the below few
using the COPY command from psql. Connect to server1 and export to CSV then connect to server2 and import from CSV
Copy tables from one server to another in PostgreSQL, Command-line dump straight into psql is the best bet pg_dump -h host1 -t yourtable database1 | psql -d database2 -h host2. The line in the PostgreSQL copy database from a server to another There are several ways to copy a database between PostgreSQL database servers. If the size of the source database is big and the connection between the database servers is slow, you can dump the source database to a file, copy the file to the remote server, and restore it.
exact commands -
1. Export via
pg_dump into a file:
pg_dump --host "source hostname" --port 5432 --username "username" --no-password --verbose --file "filename" --table "source schema.tablename" "source db name"
this will create a file called "filename" at the directory where you ran above command - that will have schema and data for the source table. You can can give any absolute path too.
2. Import via psql:
psql --host "target hostname" --port 5432 --username "username" --password --verbose --file "file name" "target db name"
->this will prompt for password
Before running import, drop the target table if exists.
Worked like charm and finished 10M rows within 2mins
Copy data from one postgres instance to another. remote copy , How to copy data from one Postgres database/table to another If we connect to database server remotely by utilizing psql command, we can I am trying to copy a number of tables from one server to another using PostgreSQL as part of reorganising our data structure. I am pretty new to PostgreSQL so haven't much experience with it.
I've written a small script in python that can help. Note - it will only work with small tables. You first need to pip install pandas, sqlalchemy and psycopg2. Create the file as pycopy.py and run it with "python pycopy.py tablename" (without the quotes). You can change the source and destination to work with any other db type - just change the source and destination strings.
import pandas as pd import sys import sqlalchemy as sa strengine_source='postgresql://user:password@db_ip:5432/dbsourcename' strengine_dest='postgresql://user:password@db_ip:5432/dbdestinationname' if len(sys.argv) > 1: tblname = sys.argv df=pd.read_sql("select * from " + tblname,sa.create_engine(strengine_source)) df.to_sql(tblname,sa.create_engine(strengine_dest), index=False)
PostgreSQL Copy Database Made Easy, PostgreSQL copy database from a server to another. There are Next How to Get Table, Database, Indexes, Tablespace, and Value Size in PostgreSQL In this post, I am sharing a demonstration on how to copy data from one table to another table using INSERT INTO SELECT in PostgreSQL. This article may help the beginner of PostgreSQL, because moving or copying data within the database which is the ubiquitous task.
this will copy only a particular table from a particular database to destination database
pg_dump -h localhost -U postgres -p 5432 -C -t table_name source_db_name | ssh -C username@ip "psql -h localhost -U postgres -p 5432 destination_db_name"
PostgreSQL Copy Table: A Step-by-Step Guide with Practical , In this tutorial, you will learn how to copy an existing table to a new one using In this table, we have two indexes: one index for the primary key and another for To copy a table with partial data from an existing table, you use the following statement: CREATE TABLE new_table AS SELECT * FROM existing_table WHERE condition; The condition in the WHERE clause of the query defines which rows of the existing table will be copied to the new table.
PostgreSQL: Use pg_dump | SSH, Using pg_dump, SSH and PSQL, you can directly copy your table data from one server to another server. Recently, I had taken PostgreSQL note that if the other database already has the table set up, you should use the -a flag for data only. i.e. pg_dump -a -t my_table my_db | psql target_db.While I'm here, If your database is on a server, I find it easier to just dump the database to a file and then scp that file to the database, then send the contents of the file to psql. e.g.pg_dump -a -t my_table my_db > my_file.sql and
Copying Data Between Tables in a Postgres Database, Learn to copy data from a table or query into another table using the INSERT command in psql. 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. 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
how to copy table one database to another database in postgresql , Have tried searching this in google[^] prior to post here? To execute a query in remote database you can use dblink[^]. Hide Copy Code. The COPY command in PostgreSQL is a simple way to copy data between a file and a table. COPY can either copy the content of a table to or from a table. Traditionally data was copied between PostgreSQL and a file. However, recently a pretty cool feature was added to PostgreSQL: It is now possible to send data directly to the UNIX pipe. COPY …
- Possible duplicate of How to import CSV file data into a PostgreSQL table?
- It not rewrite data base on server2?
- No, it's depend on which data have been already stored on server2. It's possible to delete data from server2.table_name and then import new data.
- Whats mean this part:
db_name > server1_db.sql?
- db_name is the name of your database. server1_db.sql is the filename where the dump of your tables will be saved.
- Where i gonna write data base name?
COPY products_273 TO '/tmp/products_199.csv' DELIMITER ',' CSV HEADER;Whats mean DELEMITER?
- the delimiter is a char that delimits each column from the next one in an exported table row. Read more about CSV, its' a very common and easy format for importing/exporting stuff, not only from/to database but from any other application that supports it.
- i try
COPY np_point TO 'C:/np_point.csv' DELIMITER ',' CSV HEADER;PostgreSQL says:
Query returned successfully: 6004 rows affected, 31 ms execution time.But i cant find csv file.
- are you using windows 7 ? maybe the psql process does not have write access to `C:` try to export to some other location.
- I use WinXP. I try do it on disk D: but get errors like :
ERROR: could not open file "D:/np_point.sql/liferay-develop/111.csv" for writing: No such file or directory