[Solved] Given a feedback table with columns id and comment, what will this query return?SELECT comment FROM feedback WHERE id = 3;Assume the table has:1, 'Good'2, 'Average'3, 'Excellent' | LangChain

LangChain - LangSmith Observability

Given a feedback table with columns id and comment, what will this query return?
SELECT comment FROM feedback WHERE id = 3;
Assume the table has:
1, 'Good'
2, 'Average'
3, 'Excellent'

AReturns 'Good'

BReturns 'Excellent'

CReturns all comments

DReturns no rows

Step-by-Step Solution

Solution:

Step 1: Understand the WHERE clause filtering
The query filters rows where id equals 3.
Step 2: Identify matching row
Row with id 3 has comment 'Excellent'.
Final Answer:
Returns 'Excellent' -> Option B
Quick Check:
WHERE id=3 returns 'Excellent' [OK]

Quick Trick: WHERE filters rows; only matching rows return [OK]

Common Mistakes:

MISTAKES

Assuming all comments return
Mixing up id values
Thinking query returns no rows

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More LangChain Quizzes

Given a feedback table with columns id and comment, what will this query return?

Step 1: Understand the WHERE clause filtering

Step 2: Identify matching row

Final Answer:

Quick Check:

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