« PostgreSQL » : différence entre les versions
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| Ligne 50 : | Ligne 50 : | ||
sudo -iu postgres | sudo -iu postgres | ||
# initialize the database cluster | # initialize the database cluster (postgres user) | ||
initdb -D /var/lib/postgres/data | initdb -D /var/lib/postgres/data | ||
# $LANG (en_US.UTF-8) is used to deduce the locale and the encoding | # $LANG (en_US.UTF-8) is used to deduce the locale and the encoding | ||
| Ligne 60 : | Ligne 60 : | ||
sc-start postgresql.service | sc-start postgresql.service | ||
# create a user | # login (postgres user) | ||
psql | |||
# create a user (postgres user) | |||
# If the new user has the same name as your Linux user, it allows you to access the PostgreSQL database shell without having to specify a user to login. | # If the new user has the same name as your Linux user, it allows you to access the PostgreSQL database shell without having to specify a user to login. | ||
createuser --interactive | createuser --interactive | ||
# create a database | # create a database (postgres user) | ||
createdb dbtest | createdb dbtest | ||
# login | # login (current user) | ||
psql -d dbtest | psql -d dbtest | ||
</kode> | </kode> | ||
Version du 23 mai 2023 à 21:54
Links
Database
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# create a database createdb myDatabaseName # connect to a database psql -d myDatabaseName |
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-- connect to a database \c myDatabaseName |
Table
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-- show summary information about all tables in the current database \dt |
Users and permissions
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-- list all users and their permission levels \du |
Service
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sc-start postgresql.service |
Installation
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# will install postgresql-libs, postgresql and create a system user called postgres sudo pacman -S postgresql |
Configuration
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# create the cluster directory if needed sudo mkdir /var/lib/postgres sudo chown postgres:postgres /var/lib/postgres # switch to the PostgreSQL user sudo -iu postgres # initialize the database cluster (postgres user) initdb -D /var/lib/postgres/data # $LANG (en_US.UTF-8) is used to deduce the locale and the encoding # or can be defined manually: initdb --locale=C.UTF-8 --encoding=UTF8 -D /var/lib/postgres/data --data-checksums # --data-checksums enable data checksumming # start the service sc-start postgresql.service # login (postgres user) psql # create a user (postgres user) # If the new user has the same name as your Linux user, it allows you to access the PostgreSQL database shell without having to specify a user to login. createuser --interactive # create a database (postgres user) createdb dbtest # login (current user) psql -d dbtest |
