How to Disable System-Versioning on a Temporal Table

Disabling System-Versioning on a Temporal Table

Write a SQL query to disable system-versioning on a temporal table.

Solution:

-- Disable system-versioning on the Employees table.
ALTER TABLE Employees SET (SYSTEM_VERSIONING = OFF);

Explanation:

• Purpose of the Query :
• The goal is to demonstrate how to disable system-versioning on a temporal table.
• Key Components :
• ALTER TABLE: Modifies the table to disable system-versioning.
• SYSTEM_VERSIONING = OFF: Stops tracking changes and detaches the history table.
• Why Disable System-Versioning? :
• Disabling system-versioning allows schema changes or maintenance tasks on the table.
• It reduces storage overhead if historical tracking is no longer needed
• Real-World Application :
• In development environments, disabling versioning simplifies testing and debugging.

Additional Notes:

• After disabling, manually manage the history table if needed.
• Re-enable system-versioning after completing tasks.
• Important Considerations:
• Backup the history table before disabling system-versioning.

For more Practice: Solve these Related Problems:

• Write a SQL query to disable system-versioning on a temporal Employees table for schema updates.
• Write a SQL query to temporarily disable versioning on a Products table during a bulk data import operation.
• Write a SQL query to stop tracking changes in a temporal Orders table while performing maintenance tasks.
• Write a SQL query to disable system-versioning on a temporal Customers table before migrating historical data.

Go to:

• SQL Mastering Temporal Tables Exercises Home ↩
• SQL Exercises Home ↩

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