https://stackoverflow.com › questions › 3711580
How does one write a DELETE CASCADE for postgres?Postgres foreign keys support the CASCADE deletes: slice_id integer REFERENCES slice(id) ON DELETE CASCADE etc
Try to delete row from TableY and corresponding rows from TableX will be cascade deleted. This option is indispensable when you have secondary related tables and would like to clean them all by deleting parent row from primary table without getting constraints violated or rubbish left.
https://stackoverflow.com › questions › 14141266
PostgreSQL: FOREIGN KEY/ON DELETE CASCADE - Stack OverflowA foreign key with a cascade delete means that if a record in the parent table is deleted, then the corresponding records in the child table will automatically be deleted. This is called a cascade delete.
https://thelinuxcode.com › postgres-delete-cascade
Mastering Cascading Deletes in PostgreSQL using DELETE CASCADEThe DELETE CASCADE option overrides the default behavior, allowing you to delete records and automatically delete any dependent child records. When defined on a foreign key column, DELETE CASCADE will recursively delete data from referencing tables when you delete the parent record.
https://www.commandprompt.com › education › postgresql-delete-cascade-with-examples
PostgreSQL DELETE CASCADE With Examples - CommandPrompt Inc.To use a delete cascade in Postgres, specify the "ON DELETE CASCADE" option while creating/defining a foreign key constraint. This tells Postgres to automatically delete any rows in the referenced table that are related to the row being deleted in the referencing table.
https://www.dbvis.com › thetable › postgres-on-delete-cascade-a-guide
Postgres ON DELETE CASCADE - A Guide - DbVisualizerThis article explains how to use the ON DELETE CASCADE feature in PostgreSQL to delete child records automatically when you delete a parent record. Find out everything about it in this blog!
https://stackoverflow.com › questions › 10356484
How to add "on delete cascade" constraints? - Stack Overflowstart a transaction, drop the foreign key, add a foreign key with on delete cascade, and finally. commit the transaction. Repeat for each foreign key you want to change. But PostgreSQL has a non-standard extension that lets you use multiple constraint clauses in a single SQL statement. For example.
https://www.rockdata.net › tutorial › dml-delete-cascade
PostgreSQL Tutorial: DELETE CASCADE - Redrock PostgresUse PostgreSQL DELETE CASCADE action to automatically delete related rows in child tables when a parent row is deleted.
https://www.educba.com › postgres-delete-cascade
Postgres Delete Cascade | How to use Postgres Delete Cascade? - EDUCBAWhen we use the DELETE CASCADE feature, deleting the referenced entry (parent record) results in the automatic deletion of all its referencing records (child records). Here, we will learn how we can use delete cascade in PostgreSQL with the help of an example. The example will contain two tables, namely teams, and developers. Each ...
https://itslinuxfoss.com › delete-cascade-how-works-postgresql
What is DELETE CASCADE and How it Works in PostgreSQL?The “DELETE CASCADE” is a useful Postgres feature that ensures referential integrity by deleting all the referencing records in child/referenced tables when a corresponding record is deleted from the parent/referencing table.
https://dev.to › dbvismarketing › hands-on-with-postgresql-on-delete-cascade-3kk6
PostgreSQL's ON DELETE CASCADE Feature - DEV CommunityPostgreSQL offers a robust feature, ON DELETE CASCADE, designed to simplify this process by automatically deleting child records when their parent record is deleted. This article serves as a concise guide to understanding and implementing this feature effectively.
