Postgres and Open Source Experts

Open the “pg_hba.conf” file from the local system and change the security method. Restart the application and change the password from the PostgreSQL server.

The major difference between a Procedure and a Function in PostgreSQL is that the Procedure does not return the value and the function does return it.

The CREATE PROCEDURE Statement contains the name of the procedure with its arguments. The body of the procedure contains steps to be performed.

Open the pgAdmin application and create a backup of the database by providing its location. Restore the database from the local system using the backup file.

Create a table in PostgreSQL with a field to store data in text format. Insert data in it to insert single quotes using multiple methods offered by the platform.

To query a JSONB array of objects in PostgreSQL, create a table with a JSONB data type column and expand it to an array format to apply queries on it.

To create a pivot table, the user can either use the crosstab function or the CASE statement. Create a tablefunc extension to use the crosstab function.

JSON is the data type to store data in the form of text and JSONB stores data in the binary format to improve the retrieval of the data from the PostgreSQL database.

In Postgres, a temporary table can have the same name as a permanent table. However, database experts recommend the use of distinct names to avoid ambiguity.

In PostgreSQL, the temporary tables can be explicitly dropped/removed by executing the DROP TABLE command following the temporary table’s name.