How do you use CASE WHEN in SQL for data categorization and conditional aggregation?

How do you use CASE WHEN in SQL for data categorization and conditional aggregation?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: medium

标签: interviewbit, data-analyst, topic-specific, data-analysis, analytics

参考答案摘要

CASE WHEN provides conditional logic in SQL. It works like an IF-ELSE statement and is widely used for categorization and conditional aggregation. For example, to categorize customers by age: SELECT c...

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