Answer
Scalar functions operate on individual values such as UPPER, LOWER, CONCAT, and LENGTH.
Quick Answer
Scalar functions return one value per row (unlike aggregate functions that return one value per group). Examples: string functions (UPPER, LOWER, LENGTH, CONCAT, SUBSTRING, TRIM), numeric (ROUND, FLOOR, CEIL, ABS, MOD), date (NOW, DATE_FORMAT, DATEDIFF, YEAR, MONTH, DAY), and control functions (IF, CASE, COALESCE, NULLIF). They transform individual column values.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ