Separate Orders_East Partition as a Standalone Table

Detaching a Partition from a Partitioned Table

Write a PostgreSQL query to detach Orders_East partition from the Orders table.

Solution:

-- Detach the partition named Orders_East from the Orders table without deleting the partition table
ALTER TABLE Orders DETACH PARTITION Orders_East;

Explanation:

• Purpose of the Query:
• Converts a partition back into a standalone table.
• Key Components:
• DETACH PARTITION: Removes a partition from the parent without deleting data.
• Real-World Application:
• Useful for migrating partitions to separate storage before deletion.

Notes:

• The detached partition still contains its data.

For more Practice: Solve these Related Problems:

• Write a PostgreSQL query to detach a partition and simultaneously rename it to indicate its detached status.
• Write a PostgreSQL query to detach a partition and convert it into a temporary table for data review.
• Write a PostgreSQL query to detach a partition only if the partition meets certain data volume criteria.
• Write a PostgreSQL query to detach a partition and then reattach it under a different partitioning strategy.

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Previous PostgreSQL Exercise: Attaching an Existing Table as a Partition.