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Stuff Function for XML Usages

Python/Codingmedium0.4 min readPremium
Frequency
Low
Asked at 1 company
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179
questions in Python/Coding
Difficulty Split
127E|24M|28H
in this category
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1,863
across 7 categories
Asked at these companies
NAB
Key Concepts Tested
sql
Expert AnswerPremium
75 wordsInterview-ready
**Why STUFF + FOR XML PATH:** SQL Server pattern for string aggregation pre-2017. Builds comma-separated lists, XML fragments. Replaced by STRING_AGG in modern SQL. **Syntax:** STUFF(string, start, length, replace)—replaces chars. Combined with FOR XML PATH(''): concatenates rows into string; STUFF removes leading comma. **Scalability:** FOR XML PATH scans all rows—O(n). For large aggregations (100K+ rows per group), consider CLR aggregate or application-layer concatenation....
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