Answer-first summary for fast verification
Answer: Joins information outside the object with the flattened data
The LATERAL modifier in the FLATTEN function allows joining information from outside the object being flattened with the flattened data. This enables referencing columns from the outer query within the FLATTEN function, creating a lateral join that correlates the flattened array elements with other data in the query. Option C correctly describes this functionality, which is confirmed by the Snowflake documentation and the community consensus with 100% agreement and upvoted comments. Option A is incorrect as LATERAL doesn't cast values. Option B is wrong as it doesn't extract paths. Option D is incorrect as LATERAL doesn't retrieve single instances of repeating elements.
Author: LeetQuiz Editorial Team
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What is the purpose of the LATERAL modifier in the FLATTEN function?
A
Casts the values of the flattened data
B
Extracts the path of the flattened data
C
Joins information outside the object with the flattened data
D
Retrieves a single instance of a repeating element in the flattened data
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