hive lead over

Hive中的lead()函数是一种分析函数，它用于在给定分区和排序条件下获取指定偏移量之后的值。lead()函数的语法如下：lead(exp_str, offset, defval) over(partition by ... order by ...)。 [2]

使用lead()函数时，我们可以指定要排序的列以及分区条件，以获取在排序后的结果集中指定偏移量之后的值。如果指定偏移量之后的值不存在，则可以提供一个默认值(defval)作为返回结果。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [hive分析函数lead()和lag()的应用](https://blog.csdn.net/weixin_40267121/article/details/119650606)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [HIVE 分析函数lead(),lag()等在数值计算时可能产生的问题](https://blog.csdn.net/Little_riders/article/details/115403347)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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