PostgreSQL - Transactions and Concurrency
Which SQL statement correctly starts a transaction in PostgreSQL to use MVCC?
Which SQL statement correctly starts a transaction in PostgreSQL to use MVCC?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall PostgreSQL transaction syntax
PostgreSQL usesBEGIN;to start a transaction.Step 2: Compare options
Only A is valid syntax. B and C use incorrect keywords, D is invalid.Final Answer:
BEGIN; -> Option AQuick Check:
PostgreSQL transaction start = BEGIN; [OK]
Quick Trick: Use BEGIN; to start transactions in PostgreSQL [OK]
Common Mistakes:
- Using START; which is invalid syntax
- Typing OPEN TRANSACTION; which is invalid
- Confusing transaction start with commit or rollback
Master "Transactions and Concurrency" in PostgreSQL
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