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A data analyst has created a user-defined function using the following line of code:
CREATE FUNCTION price(spend DOUBLE, units DOUBLE)
RETURNS DOUBLE
RETURN spend / units;
Which of the following code blocks can be used to apply this function to the customer_spend and customer_units columns of the table customer_summary to create column customer_price?
Suggested Answer: E
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27 comments · newest first
CO
Corinne
10 months ago
Option A makes no sense, can't just call the function like that!
BR
Brandon
10 months ago
I think option D looks good too, but not quite right.
DO
Dottie
10 months ago
Option E is definitely the right choice!
AL
Alesia
10 months ago
Wait, is it really that simple? I thought UDFs were more complex!
EN
Enola
10 months ago
I agree, E is the way to go!
AL
Alica
11 months ago
I feel like options A and D are definitely wrong, but I’m not completely certain about B and C. I think they don't follow the correct function usage either.
VI
Virgina
11 months ago
I’m a bit confused about the syntax. I thought we needed to use "AS" for the alias, but I can't recall if it’s necessary for the function call itself.
MA
Marsha
11 months ago
I remember practicing similar questions, and I feel like the correct option should directly call the function with the columns. Option E seems to fit that.
EM
Emerson
11 months ago
I think the function needs to be called with the correct syntax, but I'm not sure if "SELECT price(customer_spend, customer_units)" is the right way to do it.
DA
Daniel
11 months ago
This is straightforward. The question gives us the UDF definition, so I just need to apply it to the customer_spend and customer_units columns to create the new customer_price column. Option E is the way to go.
RO
Rosamond
12 months ago
I'm not sure about the function syntax here. Do I need to use the DOUBLE data type in the function call, or will it automatically handle the column types?
MA
Malcolm
12 months ago
Okay, I think I've got it. I just need to select the price function with the two input columns and alias it as customer_price. Option E looks like the right answer.
LA
Laurel
1 year ago
Hmm, I'm a bit confused. Do I need to use the PRICE keyword or the actual function name 'price'? I want to make sure I get the syntax right.
LE
Lenna
1 year ago
This looks straightforward. I just need to apply the price function to the customer_spend and customer_units columns to get the customer_price.
GL
Glenn
1 year ago
Option E, without a doubt. It's like a surgeon's scalpel - precise and effective. Now, where's the coffee? This exam is thirsty work!
KA
Katy
1 year ago
Option E is the way to go. It's the most efficient choice.
LE
Lelia
1 year ago
I agree, option E is the correct way to apply the user-defined function to create the customer_price column.
RH
Rhea
1 year ago
I'm not sure, but I think option E makes sense because it follows the syntax for applying a UDF to a table.
FA
Fatima
1 year ago
I agree with you, Vi. Option E is the right way to apply the user-defined function.
JE
Jettie
1 year ago
Hmm, let's see... Ah, yes! Option E is the way to go. Elegant and efficient, just the way I like it.
AI
Aileen
1 year ago
Yep, E is the way to go. Can't beat that simple and straightforward syntax. This one's a piece of cake!
JA
Jacquelyne
1 year ago
User 2: User-defined functions definitely make things easier. This one's a piece of cake!
QU
Queen
1 year ago
User 1: Yep, E is the way to go. Can't beat that simple and straightforward syntax.
TE
Teri
1 year ago
Ah, the classic UDF question! Option E is clearly the winner here. Gotta love that direct function call, am I right?
EL
Eleni
1 year ago
Absolutely, using the UDF directly with SELECT is the best approach. Option E all the way!
TH
Thaddeus
1 year ago
Definitely! Option E is the way to go. Direct and simple.
VI
Vi
1 year ago
I think the correct option is E.