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Which of the following is the correct syntax to check the query plan in PostgreSQL?

easy📝 Syntax Q12 of 15
PostgreSQL - Performance Tuning
Which of the following is the correct syntax to check the query plan in PostgreSQL?
AEXPLAIN SELECT * FROM users;
BDESCRIBE SELECT * FROM users;
CPLAN SELECT * FROM users;
DSHOW PLAN SELECT * FROM users;
Step-by-Step Solution
Solution:
  1. Step 1: Recall the command to view query plans

    PostgreSQL uses EXPLAIN to show how it will run a query.
  2. Step 2: Compare options to the correct command

    Only EXPLAIN SELECT * FROM users; is valid syntax for query plans.
  3. Final Answer:

    EXPLAIN SELECT * FROM users; -> Option A
  4. Quick Check:

    EXPLAIN = Query plan check [OK]
Quick Trick: Use EXPLAIN before your query to see the plan [OK]
Common Mistakes:
  • Using SHOW PLAN which is invalid
  • Trying PLAN or DESCRIBE which are not PostgreSQL commands
  • Missing the EXPLAIN keyword

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