How do you explicitly set the transaction isolation level to Read Committed for a single transaction in PostgreSQL?

easy📝 Syntax Q3 of 15

PostgreSQL - Transactions and Concurrency

ABEGIN ISOLATION LEVEL READ COMMITTED;

BSET TRANSACTION ISOLATION LEVEL READ COMMITTED; BEGIN;

CSTART TRANSACTION READ COMMITTED;

DBEGIN; SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL READ COMMITTED;

Step-by-Step Solution

Solution:

Step 1: Syntax for setting isolation level
In PostgreSQL, the correct way to set isolation level for the current transaction is to run SET TRANSACTION ISOLATION LEVEL ... before BEGIN.
Step 2: Confirm correct order
SET TRANSACTION ISOLATION LEVEL READ COMMITTED; BEGIN; correctly sets the isolation level and then begins the transaction.
Final Answer:
SET TRANSACTION ISOLATION LEVEL READ COMMITTED; BEGIN; -> Option B
Quick Check:
Set isolation before BEGIN [OK]

Quick Trick: Set transaction isolation before BEGIN [OK]

Common Mistakes:

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