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问答 2023-05-10 来自：开发者社区

云原生数据仓库AnalyticDB PostgreSQL版ADB-PG上是不是有更方便的函数来计算

云原生数据仓库AnalyticDB PostgreSQL版ADB-PG上是不是有更方便的函数来计算同比、环比？

文章 2023-05-08 来自：开发者社区

是的，AnalyticDB PostgreSQL版有内置的函数可以方便地计算同比、环比等指标。例如，ADB-PG 提供了用于环比计算的 LAG和LEAD 函数，用于同比计算的 DATE_TRUNC 函数和DATE_PART 函数。以下是一些示例查询，演示如何使用这些函数来计算同比和环比：计算月销售额的环比增长率：SELECT (m1.total_sales - m2.total_sales)...

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