SQL ddl定义的相关内容

阿里云文档 2025-05-23

如何使用CREATE SQL FUNCTION创建永久SQL语言定义函数并存入Meta系统

SQL语言定义的用户自定义函数（UDF）弥补了MaxCompute只能使用Java或Python创建UDF的不足，并扩展了UDF参数类型的范围，支持函数类型的参数，从而提升了表达业务逻辑的灵活性。SQL UDF支持永久UDF和临时UDF，本文为您介绍通过CREATE SQL FUNCTION命令创建永久SQL UDF。

阿里云文档 2025-04-29

如何使用FUNCTION创建临时SQL语言定义函数

SQL语言定义的用户自定义函数（UDF）扩展了MaxCompute的功能，支持更多参数类型和函数类型的入参。本文介绍如何通过FUNCTION命令创建临时SQL UDF。

阿里云文档 2025-03-26

ClickHouse数据源自定义SQL创建数据集无法保存

问题描述Quick BI中ClickHouse数据源自定义SQL创建数据集可以执行成功但是无法保存。{"traceId":"de31655e-3180-4194-9432-9773658b8d0c","code":"AE0510100008","message":"SQL导入出错","success...

阿里云文档 2023-09-03

如何使用SELECTFUNCTION调用SQL语言定义函数_云原生大数据计算服务 MaxCompute(MaxCompute)

调用SQL语言定义函数的方式和现有内建函数的调用方式一致。

文章 2022-08-24 来自：开发者社区

SQL(Structured Query Language)结构化查询语言是数据库的核心语言，是高级的非过程化编程语言，也是经典的声明式编程范式实现。DQLDQL(Data Query Language）数据查询语言，数据检索语句，用于从表中获取数据。通常最常用的为保留字select。常用的语句关键字有：SELECT, FROM, WHERE, ORDER BY, HAVING,ASC|DESC....

文章 2022-06-13 来自：开发者社区

Flink 1.10.0 SQL DDL中如何定义watermark和计算列

随着Flink1.10.0版本的发布,在SQL上一个重大的优化是支持了watermark语义的计算,在之前的Flink1.9.x版本中是不支持的,当时只能用SQL DDL进行processing time的计算,但是现在可以进行eventtime语义的计算了,那在Flink1.10.0版本中也推出了很多新的特性,这里就不在多介绍了,本篇文章主要是接上一篇文章,FlinkSQL使用DDL语句创建k....

阿里云文档 2022-05-26

SQL效检失败报错ODPS-0130121,[1,122]Invalidargumenttype-invalidtypeINTofargument1forfunctionDATEDIFF,expectDATETIME

问题描述Dataphin定义原子指标的时候，SQL效检失败，提示非法表达式，错误信息如下：ODPS-0130121:[1,122]Invalid argument type -invalid type INT of argument 1 for function DATEDIFF,expect DA...

问答 2022-02-15 来自：开发者社区

Flink SQL Row里嵌套Array<Row>该如何用DDL定义?

[image: image.png] 如题，尝试用以下方式定义时会遇到异常，求社区大佬指点正确的打开姿势。 *来自志愿者整理的flink邮件归档

问答 2022-02-15 来自：开发者社区

请问下这种json schema对应的flink sql ddl参数类型怎么定义呢？#Flink

请问下这种json schema对应的flink sql ddl参数类型怎么定义呢？flink1.10的 #Flink

问答 2022-02-15 来自：开发者社区

Flink SQL DDL 创建表时，如何定义字段的类型为proctime?

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更新时间 2024-07-20 15:27:50

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