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psql

Alive Anaconda answered on June 17, 2021 Popularity 1/10 Helpfulness 1/10

answer psql

psql

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In PostgreSQL the system determines which table is meant by following a search path, which is a list of schemas to look in.

The first matching table in the search path is taken to be the one wanted, otherwise, if there is no match a error is raised, even if matching table names exist in other schemas in the database.

To show the current search path you can use the following command:

SHOW search_path;
And to put the new schema in the path, you could use:

SET search_path TO myschema;
Or if you want multiple schemas:

SET search_path TO myschema, public;
Reference: https://www.postgresql.org/docs/current/static/ddl-schemas.html

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Source: stackoverflow.com

Tags: psql sql

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Contributed on Jun 17 2021

Alive Anaconda

0 Answers Avg Quality 2/10

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postgres

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Fun fact: "Postgres" has exactly as many characters as "Database"
Check for yourself!
Postgres --> 8 chars!
Database --> 8 chars!

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Contributed on Sep 01 2021

The Nic

0 Answers Avg Quality 2/10

postgresql

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brew install postgresql@15

Popularity 10/10 Helpfulness 2/10 Language shell

Source: formulae.brew.sh

Tags: postgresql p

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Contributed on Jun 10 2023

Areeb Ahmar

0 Answers Avg Quality 2/10

PostgreSQL, often referred to as "Postgres," is an open-source relational database management system (RDBMS). It is widely used for handling structured data and providing efficient data storage and retrieval capabilities.

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Contributed on May 28 2023

Gorgeous Goldfinch

0 Answers Avg Quality 2/10

postgresql

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psql -U postgres -W # Enter Postgres console
\?	# View all posgres commands
\l # List all Databases
\dt # View all DB tables
\c DB_name # change Database nam
\d nombre_tabla # Describe table
\h # View all sql commands
\h nombre_de_la_funcion # Check how a sql command is executed
Ctrl + C # Cancel everything in console
SELECT version(); # View installed postgres version
\g # Execute last previous function again
\timing # Initialize time counter to show function execution time
Ctrl + L # Clean screen

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Source: Grepper

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Contributed on Apr 07 2023

Armandres

0 Answers Avg Quality 2/10

Postgresql

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# The bash function below utilizes the CLI tool psql to vacuum analyze tables
# in a single schema which can be identified by either passing the name of
# the schema as the first parameter to the function
# or setting the environment variable PG_SCHEMA:
#

vacuum_analyze_schema() {
    # vacuum analyze only the tables in the specified schema

    # postgres info can be supplied by either passing it as parameters to this
    # function, setting environment variables or a combination of the two
    local pg_schema="${1:-${PG_SCHEMA}}"
    local pg_db="${2:-${PG_DB}}"
    local pg_user="${3:-${PG_USER}}"
    local pg_host="${4:-${PG_HOST}}"

    echo "Vacuuming schema \`${pg_schema}\`:"

    # extract schema table names from psql output and put them in a bash array
    local psql_tbls="\dt ${pg_schema}.*"
    local sed_str="s/${pg_schema}\s+\|\s+(\w+)\s+\|.*/\1/p"
    local table_names=$( echo "${psql_tbls}" | psql -d "${pg_db}" -U "${pg_user}" -h "${pg_host}"  | sed -nr "${sed_str}" )
    local tables_array=( $( echo "${table_names}" | tr '\n' ' ' ) )

    # loop through the table names creating and executing a vacuum
    # command for each one
    for t in "${tables_array[@]}"; do
        echo "doing table \`${t}\`..."
        psql -d "${pg_db}" -U "${pg_user}" -h "${pg_host}" \
            -c "VACUUM (ANALYZE) ${pg_schema}.${t};"
    done
}

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Source: stackoverflow.com

Tags: bash

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Contributed on Dec 03 2021

LinuxMalaysia

0 Answers Avg Quality 2/10

postgresql

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PostgreSQL is used as the primary data store or data warehouse for many web, mobile, geospatial, and analytics applications. The latest major version is PostgreSQL 12.

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Contributed on Dec 08 2022

Deepika Sahu

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postgres

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$ sudo initdb --locale en_US.UTF-8 -D /var/lib/postgres/data
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale "en_US.UTF-8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

Data page checksums are disabled.

fixing permissions on existing directory /var/lib/postgres/data ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... Africa/Nairobi
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok

initdb: warning: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the option -A, or
--auth-local and --auth-host, the next time you run initdb.

Success. You can now start the database server using:

    pg_ctl -D /var/lib/postgres/data -l logfile start

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Source: techviewleo.com

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Contributed on Aug 08 2022

Ebo Asibu

0 Answers Avg Quality 2/10

postgreSQL

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sudo mkdir -p /etc/paths.d &&
echo /Applications/Postgres.app/Contents/Versions/latest/bin | sudo tee /etc/paths.d/postgresapp

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Source: postgresapp.com

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Contributed on Nov 14 2021

Clean Caterpillar

0 Answers Avg Quality 2/10

postgreSQL

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-1

$ sudo -i -u postgres
Code language: Shell Session (shell)

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Source: www.postgresqltutorial.com

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Contributed on Jun 30 2022

Spotless Starling

0 Answers Avg Quality 2/10

postgres

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# Use postgres/example user/password credentials
version: '3.1'

services:

  db:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example

  adminer:
    image: adminer
    restart: always
    ports:
      - 8080:8080

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Source: hub.docker.com

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Contributed on May 20 2022

Uninterested Unicorn

0 Answers Avg Quality 2/10

psql

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