In Microsoft SQL Server, the clause FOR XML RAW in a SELECT statement instructs the engine to produce XML in what structure?
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APlace the values of the columns as attributes in each XML row element.
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BPlace the values of the columns into nested elements rather than attributes.
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CPlace some columns into elements and others into attributes.
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DNone of the above is correct.
Answer
Correct Answer: Place the values of the columns as attributes in each XML row element.
Explanation
Introduction / Context:SQL Server supports several FOR XML modes (RAW, AUTO, PATH) to serialize result sets into XML. Understanding their output shape is important for integration and APIs.
Given Data / Assumptions:
- We are using FOR XML RAW.
- Default behavior (without additional options) is considered.
Concept / Approach:FOR XML RAW returns each row as a generic element (often
Step-by-Step Solution:
Recall RAW mode: one element per row; columns as attributes.Match this to the choices provided.Select option (a).Verification / Alternative check:Run a simple query like SELECT 1 AS A, 'X' AS B FOR XML RAW; the output resembles
Why Other Options Are Wrong:
- (b): Elements (child elements) behavior aligns more with PATH when configured that way.
- (c): Mixing columns into elements vs. attributes requires PATH or EXPLICIT constructs, not RAW by default.
Common Pitfalls:Assuming RAW provides nested hierarchies; RAW is flat and generic unless combined with additional directives.
Final Answer:Place the values of the columns as attributes in each XML row element.