Comprehensive Guide to Using Triggers with Stored Procedures in PostgreSQL

This resource offers a total of 50 PostgreSQL Using triggers with stored procedures problems for practice. It includes 10 main exercises, each accompanied by solutions, detailed explanations, and four related problems.

1. Audit Log Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to log every INSERT, UPDATE, and DELETE operation on a table.

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2. Timestamp Update Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to automatically update a timestamp column whenever a record is updated.

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3. Cascade Update Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to cascade update a foreign key field in a child table when a parent table's primary key is changed.

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4. Recursive Trigger Prevention using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure with a mechanism to prevent recursive calls during updates.

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5. Business Rule Enforcement Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to enforce a business rule by validating data before insertion.

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6. Conditional Trigger Execution using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure only when specific columns are modified in a table.

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7. Data Synchronization Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to synchronize data between two related tables upon update.

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8. Data Validation Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to validate data before insertion or update on a table.

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9. Archival Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to archive records into a history table when they are deleted from the main table.

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10. Notification Trigger using Stored Procedure

Write a PostgreSQL query to create a trigger that calls a stored procedure to send notifications when critical updates occur in a table.

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More to Come !

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.