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

5 months ago

I disagree, VACUUM alone is enough for stats.

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Leonardo

5 months ago

No way, it's definitely not EXPLAIN.

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Myra

6 months ago

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

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Emily

6 months ago

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

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Gabriele

6 months ago

Definitely B, VACUUM ANALYZE is the one!

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Lavonda

6 months ago

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

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Florinda

6 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

6 months ago

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

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Valentin

6 months ago

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

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Crissy

6 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

6 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

6 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

11 months 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

10 months ago

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

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Magda

10 months ago

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

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Sean

11 months ago

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

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Melissa

12 months 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

12 months ago

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

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Vesta

9 months ago

VACUUM is important for reclaiming space and maintaining database performance.

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Solange

9 months ago

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

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Stefany

9 months ago

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

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Verda

9 months ago

I usually run VACUUM ANALYZE to optimize the database performance.

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Timmy

9 months ago

E) NOTIFY

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Weldon

9 months ago

D) EXPLAIN ANALYZE

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Tamekia

10 months ago

C) EXPLAIN

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Marcos

10 months ago

B) VACUUM ANALYZE

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Rozella

10 months ago

A) VACUUM

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Lorriane

10 months ago

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

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Alfred

10 months ago

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

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Stevie

10 months ago

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

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Sage

10 months ago

D) EXPLAIN ANALYZE

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Micah

10 months ago

C) EXPLAIN

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Otis

11 months ago

B) VACUUM ANALYZE

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Bettye

11 months ago

A) VACUUM

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Mignon

12 months ago

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

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Lemuel

12 months ago

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

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Winfred

11 months ago

E) NOTIFY

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Cassandra

11 months ago

B) VACUUM ANALYZE

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Frankie

11 months 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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