PostgreSQL - Triggers in PostgreSQL
Which statement-level trigger timing is valid in PostgreSQL?
Which statement-level trigger timing is valid in PostgreSQL?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify valid timing for statement-level triggers
Statement-level triggers can be BEFORE STATEMENT or AFTER STATEMENT.Step 2: Eliminate row-level timings
BEFORE EACH ROW and AFTER EACH ROW are valid only for row-level triggers.Final Answer:
AFTER STATEMENT -> Option CQuick Check:
Statement-level trigger timing = AFTER STATEMENT [OK]
Quick Trick: Statement-level triggers use BEFORE or AFTER STATEMENT [OK]
Common Mistakes:
- Using EACH ROW with statement-level triggers
- Confusing timing keywords
- Assuming statement-level triggers have row timing
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