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PostgreSQL provides developers with a rich set of tools to manage concurrent access to data. Internally, data consistency is maintained by using a multi-version model (multi-version concurrency control, MVCC). This means that each SQL statement sees
One: Command line Backup and recovery Postgres database①: First switch to Postgres userSu Postgres
②: Backing up a database named host to a temporary file Host.dumpPg_dump-w Host >/tmp/host.dump
③: Import data from backup file infile to database
Our company has developed a database product based on Postgres, needless to say we have changed the source code of OSS, and have also integrated and written some plugins. Therefore, when PostgreSQL and related plugins are upgraded, we also need to
Summary of Postgres operations in Ubuntu
1.Basic operation commands
After the installation is complete, PostgreSQL creates a database user account named Postgres by default. It is a super Administrator account like the root account of MySQL
Use CreateUser to create a user[Plain]View Plaincopyprint?
[Email protected] ~]$/data/pgsql/bin/createuser--help
CreateUser creates a new PostgreSQL role.
Usage:
CreateUser [OPTION] ... [ROLENAME]
Options:
-C,--connection-limit=n
Seven, Pg_dump:
Pg_dump is a tool for backing up the PostgreSQL database. It can even make a full, consistent backup when the database is being used concurrently, without blocking access to the database by other users. The dump format generated by
0, password file:
Before giving other PostgreSQL client commands, we need to introduce the password file in PostgreSQL. The file is explained here in advance because we are applying the file in a lot of the following sample code to ensure that our
Layout:postPreliminary use of Title:postgres and OSMDate:2016-9-20Categories:blogTags: [map development] Description: Map Development
This paper mainly includes the following content PostgreSQL database, used to store map raw data osm2pgsql used to
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