Interactive Trigger Studio

SQL Trigger Practice Playground

Practice BEFORE, AFTER, and validation triggers on realistic workflows like inventory control, audit logging, salary history, and fraud-style checks. Write triggers, fire events, and inspect what changed.

Simulate INSERT, UPDATE, DELETE Audit and history practice Validation and business rules Ctrl+Enter to run SQL
Trigger SQL
Create the trigger, then fire it with INSERT, UPDATE, or DELETE statements and inspect the affected tables.
Trigger Results
Execution Ready

Load a scenario and run the starter script to begin.

Mission Focus 0 skills

Trigger timing, rule checks, and side effects appear here.

Result Shape 0 rows

Rows and columns update after each run.

Run a query to see the result here.
Run a query or reset a scenario to inspect the table state.
Trigger log tables will appear here when the scenario includes them.
Mission Brief
Mission loading Core

Scenario Map
Tables, keys, and trigger targets appear here.
Trigger Patterns
Validation BEFORE INSERT ... SELECT RAISE(...)
Audit AFTER UPDATE ... INSERT INTO log
Stock AFTER INSERT ... UPDATE inventory
History AFTER UPDATE ... OLD and NEW
Cleanup AFTER DELETE ... archive rows
Debug SELECT * FROM trigger_log