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Which of these commands will update statistics for all tables in the current database?

easy📝 Conceptual Q2 of 15
PostgreSQL - Performance Tuning
Which of these commands will update statistics for all tables in the current database?
AANALYZE tablename
BANALYZE
CVACUUM tablename
DREFRESH MATERIALIZED VIEW
Step-by-Step Solution
Solution:

  1. Step 1: Identify command for all tables

    Running ANALYZE without arguments updates stats for all tables in the current database.

  2. Step 2: Check other options

    ANALYZE tablename updates one table; VACUUM cleans tables; REFRESH MATERIALIZED VIEW updates views, not stats.

  3. Final Answer:

    ANALYZE -> Option B

  4. Quick Check:

    ANALYZE alone updates all tables [OK]
Quick Trick: ANALYZE alone updates all tables' stats [OK]
Common Mistakes:
  • Using ANALYZE tablename for all tables
  • Confusing VACUUM with ANALYZE
  • Thinking REFRESH MATERIALIZED VIEW updates stats

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