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PostgreSQL Exam PGCES-02 Topic 10 Question 69 Discussion

Actual exam question for PostgreSQL's PGCES-02 exam
Question #: 69
Topic #: 10
[All PGCES-02 Questions]

Table t1 is defined as follows: CREATE TABLE t1 (value VARCHAR(5)); A set of SQL statements were executed in the following order. Select the number of rows that table "t1" has after execution. BEGIN; INSERT INTO t1 VALUES ('A'); SAVEPOINT sp; INSERT INTO t1 VALUES ('B'); ROLLBACK TO sp; INSERT INTO t1 VALUES ('C'); COMMIT;

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Suggested Answer: B

by Kathrine at Aug 22, 2024, 05:26 PM

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Myra
10 months ago
I think the answer is E) 0 rows because of the ROLLBACK statement.
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Leonor
10 months ago
Wait, did they just throw in a COMMIT at the end to confuse us? I'm going with D) 4 rows, just to be on the safe side. Better safe than sorry, right?
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Wilford
9 months ago
I'm sticking with 4 rows just to play it safe.
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Fidelia
9 months ago
I'm sticking with 4 rows, just to be safe.
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Shizue
9 months ago
I agree, I'll go with 2 rows as well.
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Marshall
9 months ago
I'm not sure, maybe it's 0 rows because of the ROLLBACK.
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Lashawnda
10 months ago
But then the COMMIT should make it 3 rows, right?
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Oretha
10 months ago
I think it's 2 rows because of the ROLLBACK to the SAVEPOINT.
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Mitsue
10 months ago
I think it's actually 2 rows because of the ROLLBACK to the SAVEPOINT sp.
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Leonard
10 months ago
I'm not sure, but I think the answer might be D) 4 rows.
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Fanny
10 months ago
This is a tricky one, but I think I've got it. The ROLLBACK TO sp ensures that the 'B' row is never committed, so the final count is 2 rows. B) 2 rows is the way to go.
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Lorrine
10 months ago
Yes, the 'B' row is never committed, so the final count is 2 rows.
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Mollie
10 months ago
I agree, the ROLLBACK TO sp statement is key here.
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Fernanda
10 months ago
I disagree, I believe the answer is C) 3 rows.
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Erasmo
11 months ago
Ah, I see what's going on here. The ROLLBACK TO sp undoes the insertion of 'B', so the final result is 3 rows. C) 3 rows is the correct answer.
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Marquetta
10 months ago
Yes, you're right. The ROLLBACK TO sp undoes the insertion of 'B', so the final result is 3 rows.
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Jeanice
10 months ago
I think it's 3 rows.
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Xochitl
11 months ago
I think the answer is B) 2 rows.
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Micheline
11 months ago
Hmm, let's see... After the ROLLBACK TO sp, the table should only have the first row with 'A', so the answer is A) 1 row.
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Graciela
10 months ago
You're right, it's A) 1 row.
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Adaline
10 months ago
Actually, it should be A) 1 row.
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Fatima
10 months ago
No, I believe it's B) 2 rows.
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Mitsue
11 months ago
I think it's A) 1 row.
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