When will you use the DISTINCT keyword?

When will you use the DISTINCT keyword?

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: easy

标签: intellipaat, sql, topic-specific, sql, database

参考答案摘要

DISTINCT is used to eliminate duplicate rows. SELECT COUNT (DISTINCT Table\_name). This can be used to count the unique records. However, using it multiple times can impact the table’s performance.

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