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PostgreSQL PGCES-02 Exam - Topic 4 Question 72 Discussion

Select two suitable statements regarding the following SQL statement:CREATE TRIGGER trigger_1 AFTER UPDATE ON sales FOR EACH ROW EXECUTE PROCEDURE write_log();
C) The 'write_log' function is called before 'UPDATE' takes place.
A) It is defining a trigger 'trigger_1'.
B) Every time 'UPDATE' is executed on the 'sales' table, the 'write_log' function is called once.
D) 'UPDATE' is not executed if 'write_log' returns NULL.
E) 'DROP TRIGGER trigger_1 ON sales;' deletes the defined trigger.

PostgreSQL PGCES-02 Exam - Topic 4 Question 72 Discussion

Actual exam question for PostgreSQL's PGCES-02 exam
Question #: 72
Topic #: 4
[All PGCES-02 Questions]

Select two suitable statements regarding the following SQL statement:

CREATE TRIGGER trigger_1 AFTER UPDATE ON sales FOR EACH ROW EXECUTE PROCEDURE write_log();

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Suggested Answer: C

by Shawnta at Sep 12, 2024, 09:07 PM

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Glendora
7 months ago
No way, 'UPDATE' still happens even if 'write_log' returns NULL.
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Deane
8 months ago
I think 'DROP TRIGGER' does delete it, right?
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Tasia
8 months ago
Wait, does 'write_log' really run before the update? That seems off.
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Gwen
8 months ago
Agreed, 'write_log' runs after every update on 'sales'.
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Jacquelyne
8 months ago
It's definitely defining a trigger 'trigger_1'.
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Nancey
9 months ago
I think option E is true too, as we discussed how to drop triggers in our practice questions.
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Brigette
9 months ago
I feel like option C is wrong since it says the function is called before the update, but I can't recall the exact details.
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Matilda
9 months ago
I'm not entirely sure, but I think option B makes sense because it mentions that the function is called after an update, which aligns with what we learned.
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Lenita
9 months ago
I remember that a trigger is defined to perform actions automatically, so I think option A is definitely correct.
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Georgeanna
9 months ago
This is a good opportunity to apply my knowledge of SQL triggers. I'll make sure to read the question carefully and consider each option before selecting my answers.
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France
9 months ago
I'm a little confused by the wording of some of these options. I'll need to think through the logic of how triggers work to determine the right answers.
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Timmy
9 months ago
Okay, let's see here. The trigger is defined to run after an UPDATE on the 'sales' table, and it calls the 'write_log' function. I think options A and B are the correct ones, but I'll double-check the other choices just to be sure.
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Kimberlie
9 months ago
Hmm, I'm a bit unsure about the specifics of how this trigger works. I'll need to carefully read through the options to make sure I understand the details.
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Adelina
9 months ago
This looks like a pretty straightforward SQL trigger question. I'm confident I can handle this.
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Shawna
1 year ago
I wonder if the 'write_log' function is as exciting as it sounds. Maybe it just writes 'Another day, another sale' in the log.
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Truman
1 year ago
E is correct. The given statement would delete the defined trigger.
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Carli
1 year ago
D is incorrect. The 'write_log' function is called regardless of its return value.
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Reita
1 year ago
C is incorrect. The trigger is defined to execute the function after the update, not before.
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Ilene
1 year ago
D) 'UPDATE' is not executed if 'write_log' returns NULL.
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Gabriele
1 year ago
B) Every time 'UPDATE' is executed on the 'sales' table, the 'write_log' function is called once.
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Von
1 year ago
B) Every time 'UPDATE' is executed on the 'sales' table, the 'write_log' function is called once.
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Carlee
1 year ago
A) It is defining a trigger 'trigger_1'.
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Avery
1 year ago
A) It is defining a trigger 'trigger_1'.
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An
1 year ago
A and B are correct. The trigger is defined to execute the 'write_log' function after an update on the 'sales' table.
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Trinidad
1 year ago
User: A and B are correct. The trigger is defined to execute the 'write_log' function after an update on the 'sales' table.
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Suzan
1 year ago
B) Every time 'UPDATE' is executed on the 'sales' table, the 'write_log' function is called once.
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Teri
1 year ago
A) It is defining a trigger 'trigger_1'.
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Nikita
1 year ago
B) And the 'write_log' function is called after each update on the 'sales' table.
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Sue
1 year ago
A) Yes, that's correct. The trigger is named 'trigger_1'.
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Herminia
1 year ago
B) Every time 'UPDATE' is executed on the 'sales' table, the 'write_log' function is called once.
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Gabriele
1 year ago
A) It is defining a trigger 'trigger_1'.
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Nicolette
1 year ago
I'm not sure about statement C, I think the function is called after the update.
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Tonja
1 year ago
I agree with Gwen, the trigger is defined and the function is called after each update.
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Gwen
1 year ago
I think statement A and B are correct.
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