PostgreSQL PGCES-02 Exam - Topic 11 Question 26 Discussion

Actual exam question for PostgreSQL's PGCES-02 exam

Question #: 26
Topic #: 11

Select the correct SQL statement that records the space occupied by deleted or updated rows for later reuse, and also updates statistics.

AVACUUM

BVACUUM ANALYZE

CEXPLAIN

DEXPLAIN ANALYZE

ENOTIFY

Show Suggested Answer

Suggested Answer: A

by Theola at May 30, 2022, 09:07 AM

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Layla

8 months ago

I disagree, VACUUM alone is enough for stats.

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Leonardo

8 months ago

No way, it's definitely not EXPLAIN.

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Myra

9 months ago

Wait, does EXPLAIN really not do this? That's surprising!

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Emily

9 months ago

I thought it was just VACUUM, but I guess not.

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Gabriele

9 months ago

Definitely B, VACUUM ANALYZE is the one!

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Lavonda

9 months ago

I thought EXPLAIN was for query performance, so it can't be the answer, right?

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Florinda

9 months ago

I practiced a question like this, and I feel like VACUUM ANALYZE is the right choice because it does both tasks.

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Noemi

9 months ago

I'm not entirely sure, but I remember something about VACUUM being related to space management.

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Valentin

9 months ago

I think the answer might be VACUUM ANALYZE since it updates statistics and reclaims space.

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Crissy

9 months ago

I'm pretty confident I know the answer to this one. Salesforce Net Zero Cloud uses the Greenhouse Gas Protocol as its base accounting methodology.

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Joaquin

10 months ago

Hmm, this seems straightforward. I think option A is the way to go - clicking the field in the sidebar and confirming the pop-up should do the trick.

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Lettie

10 months ago

Wait, what's the difference between adding/removing a witness line and changing a witness line? I'm a bit confused on the nuances here.

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Felix

1 year ago

B) VACUUM ANALYZE - the one that cleans up and updates the stats. Perfect for keeping my database running smooth like a well-oiled machine!

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Kiley

1 year ago

User 3: Yes, VACUUM ANALYZE is the one that keeps the database running smoothly.

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Magda

1 year ago

User 2: I believe it's VACUUM ANALYZE, it not only cleans up but also updates the stats.

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Sean

1 year ago

User 1: I think the correct SQL statement is VACUUM.

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Melissa

1 year ago

NOTIFY? I'll just send a carrier pigeon to let the database know it's time for a cleanup.

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Daisy

1 year ago

EXPLAIN ANALYZE? I prefer to just 'explain' to my boss why the database is slow.

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Vesta

1 year ago

VACUUM is important for reclaiming space and maintaining database performance.

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Solange

1 year ago

I find it easier to just run EXPLAIN and explain the query plan to my team.

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Stefany

1 year ago

EXPLAIN ANALYZE provides detailed execution information, it's useful for performance tuning.

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Verda

1 year ago

I usually run VACUUM ANALYZE to optimize the database performance.

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Timmy

1 year ago

E) NOTIFY

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Weldon

1 year ago

D) EXPLAIN ANALYZE

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Tamekia

1 year ago

C) EXPLAIN

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Marcos

1 year ago

B) VACUUM ANALYZE

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Rozella

1 year ago

A) VACUUM

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Lorriane

1 year ago

I think VACUUM ANALYZE is the best option for maintaining database performance.

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Alfred

1 year ago

I always use VACUUM ANALYZE to make sure my database is running efficiently.

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Stevie

1 year ago

VACUUM ANALYZE is the correct statement to use for optimizing the database.

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Sage

1 year ago

D) EXPLAIN ANALYZE

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Micah

1 year ago

C) EXPLAIN

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Otis

1 year ago

B) VACUUM ANALYZE

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Bettye

1 year ago

A) VACUUM

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Mignon

1 year ago

VACUUM ANALYZE? Gotta keep that database in tip-top shape, am I right?

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Lemuel

1 year ago

VACUUM? Sounds like I'm cleaning my room, not my database!

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Winfred

1 year ago

E) NOTIFY

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Cassandra

1 year ago

B) VACUUM ANALYZE

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Frankie

1 year ago

A) VACUUM

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Lilli

1 year ago

I'm not sure, but I think it might be B) VACUUM ANALYZE because it also updates statistics.

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Lynsey

1 year ago

I agree with Thomasena, VACUUM is used to reclaim space and update statistics.

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Thomasena

1 year ago

I think the correct answer is A) VACUUM.

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