How to find duplicate records in a table?

How to find duplicate records in a table?

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: hard

标签: interviewbit, teradata, topic-specific, data-warehouse

参考答案摘要

The DISTINCT statement or GROUP BY statement can be used to identify duplicate records in a table. SELECT DISTINCT column 1, column 2... FROM tablename; OR SELECT column 1, column 2,... FROM tablename...

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