What will happen if we try inserting two nulls in a column having a unique constraint on it?

What will happen if we try inserting two nulls in a column having a unique constraint on it?

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, data-modelling, topic-specific

参考答案摘要

Since a null value is not equal to another null value, inserting two null values on a column with a unique constraint does not throw any error. It simply inserts the data.

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