PostgreSQL - Triggers in PostgreSQL
Which clause allows you to specify the order of execution for multiple triggers on the same event in PostgreSQL?
Which clause allows you to specify the order of execution for multiple triggers on the same event in PostgreSQL?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify ordering clause for triggers
PostgreSQL uses the FOLLOWS clause to specify that one trigger should run after another.Step 2: Confirm correct clause usage
ORDER BY is for queries, WHEN is for conditions, BEFORE is timing, so FOLLOWS is correct.Final Answer:
FOLLOWS -> Option BQuick Check:
Trigger order control = FOLLOWS clause [OK]
Quick Trick: Use FOLLOWS to set trigger execution order explicitly [OK]
Common Mistakes:
- Confusing ORDER BY with trigger order
- Using WHEN to control execution order
- Thinking BEFORE controls order instead of timing
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