How To Create a CTE(Common Table Expression)On PostgreSQL


With CTE we can generate recursive queries.

We can create a code block and use it over and over again.

In this article, I will illustrate by example how to obtain hierarchical results using CTE.

We create a table using the following script.


The following script also adds a few records to the table.


With the following script, we create a CTE that creates a hierarchy of all employees.

Author: dbtut

We are a team with over 10 years of database management and BI experience. Our Expertises: Oracle, SQL Server, PostgreSQL, MySQL, MongoDB, Elasticsearch, Kibana, Grafana.

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