In PostgreSQL, schemas are logical containers for database objects (like tables, views, and functions). Each database comes with a default public schema that can store user-defined objects, but additional schema
SELECT routine_name AS function_name, routine_type AS function_type, data_type FROM information_schema.routines WHERE routine_type = 'FUNCTION' AND routine_schema = 'public'; Using SQL queries to list user-defined functions in PostgreSQL databases offers flexibility to specify the required informati...
postgres-# \dn information_schema This tells us the OWNER of the SCHEMA.\z Modifications to Get All Tables in PostgreSQLAn alternative to the first solution would be to use:postgres-# \dt *.* This will return all the tables as what’s done before....
The pg_user view of the pg_catalog schema under the postgres default database provides access to information about database users. Launch the query below in a client supporting PostgreSQL, such as DbVisualizer, to get the list of all the users: Copy 1 SELECT * FROM pg_catalog.pg_user;...
How to list all columns in PostgreSQL? 1. Using SQL query Using query editor, run this query to show all columns with details: SELECT * FROM information_schema.columns WHERE table_schema = 'schema_name' AND table_name = 'table_name'; ...
How to Create a PostgreSQL Schema? To create a schema, you need to use the CREATE SCHEMA statement. You can specify the name of your choice for a schema. The CREATE SCHEMA statement will create a schema in the current database.
In this guide, we will show how to exclude a schema while restoring a PostgreSQL multi-schema database from a backup file.
Aspostgresuser, start PostgreSQL on node 01 only: Raw $ pg_ctl -D /var/lib/pgsql/data/ start On the remaining nodes the cluster only as postgres user, perform the below steps to copy the existing configuration from node 01 to the other nodes in the cluster. These steps should not be...
How to Create a Table in PostgreSQL Let's create a test table to practice on. We will create a table called "pg_equipment" that defines various pieces of playground equipment. Type the following table definition: CREATE TABLE pg_equipment ( ...
PostgreSQL PSQL ODBC Driver is the official PostgreSQL ODBC Driver that allows data access similar to other vendor-specific drivers. Once you’ve written an ODBC application, you can easily connect to any specified back-end database, irrespective of the vendor, as long as the database schema re...