Postgres and Open Source Experts

Terminating the loop before its actual ending point or condition can be done using the “Exit” statement in the PostgreSQL query.

While loop is used in PostgreSQL to apply multiple iterations on the query by checking the condition for each iteration before executing the body of the loop.

The for loop in Postgres is used to iterate/traverse over a specific range or a result set. You can use and customize it according to your requirements.

In PostgreSQL, the PERCENT_RANK function can be used with PARTITION BY and ORDER BY clauses using ascending and descending order to get a rank for each row.

The CUBE clause in PostgreSQL can be used under the GROUP BY clause to apply an aggregate function on multilevel columns to generate reports.

The PARTITION BY statement is used to create partitions in the tables to keep them efficient by dividing them into smaller tables for quick fetching of data.

Create a PostgreSQL database on the Amazon cloud platform using RDS service and connect to it using its endpoint and import data in it from the local directory.

Create a backup of the local PostgreSQL database and connect to the AWS RDS database. After that, simply restore the backup file to the RDS database.

Postgres allows us to utilize the for loop to loop through a query’s result set. A record-type variable can be declared to keep the rows of a result set returned by the SELECT query.

In Postgres, the “LOCALTIME” function is used to get the current time without zone information. It is executed without parentheses.