Contents
How do I dump a single table in postgresql?
To backup a specific table, use the –table TABLENAME option in the pg_dump command. If there are same table names in different schema then use the –schema SCHEMANAME option. This is an example of backing up a specific Postgres database.
How do I copy a table in postgresql?
To copy a table with partial data from an existing table, users can use the following statement: Syntax: 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.
When to run PG _ restore in PostgreSQL?
So, you should also specify a superuser name with -S, or preferably run pg_restore as a PostgreSQL superuser. By default, table data is restored even if the creation command for the table failed (e.g., because it already exists). With this option, data for such a table is skipped.
What is the database name in PG restore?
The database named in the -d switch can be any database existing in the cluster; pg_restore only uses it to issue the CREATE DATABASE command for mydb. With -C, data is always restored into the database name that appears in the dump file.
What is the difference between PG _ dump and PG _ restore?
And, while pg_dump ‘s -t flag will also dump subsidiary objects (such as indexes) of the selected table (s), pg_restore ‘s -t flag does not include such subsidiary objects. In versions prior to PostgreSQL 9.6, this flag matched only tables, not any other type of relation.
Which is the most time consuming part of PG restore?
Run the most time-consuming parts of pg_restore — those which load data, create indexes, or create constraints — using multiple concurrent jobs. This option can dramatically reduce the time to restore a large database to a server running on a multiprocessor machine.