polardb SQL函数的相关内容

文章 2022-02-17 来自：开发者社区

PolarDB-X 1.0-SQL 手册-函数-其他函数

DRDS 还支持如下函数：函数名描述RAND()Return a random floating-point valueRELEASE_ALL_LOCKS()Releases all current named locksRELEASE_LOCK()Releases the named lockSLEEP()Sleep for a number of secondsUUID()Return a ....

文章 2022-02-17 来自：开发者社区

PolarDB-X 1.0-SQL 手册-函数-Grouping Sets、Rollup和Cube扩展

在关系型数据库中，通常需要使用多个SELECT + UNION语句来实现按照多组维度的结果分组，PolarDB-X新增支持通过Grouping Sets、Rollup和Cube扩展来实现这一目的。此外，PolarDB-X还支持在SELECT命令或HAVING子句中使用GROUPING函数和GROUPING_ID函数，来帮助解释使用上述扩展时的结果。本文将介绍相关语法和示例。前提条件PolarDB....

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更新时间 2024-06-08 07:37:19

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