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PostgreSQL PGCES-02 Exam - Topic 2 Question 1 Discussion

Select the correct SQL statement which concatenates strings 'ABC' and 'abc' to form 'ABCabc'.
E) SELECT 'ABC' || 'abc';
A) SELECT 'ABC' . 'abc';
B) SELECT cat('ABC', 'abc') FROM pg_operator;
C) SELECT 'ABC' + 'abc';
D) SELECT 'ABC' + 'abc' FROM pg_operator;

PostgreSQL PGCES-02 Exam - Topic 2 Question 1 Discussion

Actual exam question for PostgreSQL's PGCES-02 exam
Question #: 1
Topic #: 2
[All PGCES-02 Questions]

Select the correct SQL statement which concatenates strings 'ABC' and 'abc' to form 'ABCabc'.

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Suggested Answer: E

by Joesph at May 07, 2022, 08:04 PM

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Reta
8 months ago
No way, I thought '+' worked for concatenation too!
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Marget
8 months ago
Wait, can you really use cat() in SQL? That seems odd.
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Ronald
9 months ago
E is correct! The double pipe operator is the standard for concatenation.
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Skye
9 months ago
I thought it was A at first, but that's not valid syntax.
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Micaela
9 months ago
It's definitely E, that's the right way to concatenate in SQL!
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Laine
9 months ago
I feel like option A is definitely wrong, but I can't remember if `cat()` is the right function or if it's just `||` that we should use.
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Lorrine
9 months ago
I practiced a similar question where we used `cat()` in PostgreSQL, but I don't recall if that's the right syntax here.
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Leanna
9 months ago
I'm not entirely sure, but I remember something about using `+` for concatenation in some databases. Could it be option C?
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Jin
9 months ago
I think the concatenation operator in SQL is usually `||`, so maybe option E is correct?
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Isaiah
9 months ago
Ah, this is a classic cloud security question. The key is integrations - these tools need to be able to connect to all your cloud accounts and third-party services to get a full view. I'm pretty sure the answer is APIs, but I'll double-check my notes just to be safe.
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Ulysses
9 months ago
I'm pretty sure the answer is B - read/write/execute. That's the standard file permissions we've been learning about.
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Dusti
10 months ago
I practiced a similar question, and I think it was RADIUS and TACACS+, but now I'm second-guessing if there's something else like sFlow involved.
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Lonny
10 months ago
I'm a little confused on this one. Is it really that simple? I feel like there could be some tricky logic behind the "most consistent with lower inventories" part. I'll have to think this through carefully.
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