如何从 sql 对象（CRATE DB）中查询项目

Question

我正在尝试使用新的 crate 数据库。 link 我有一个 table，其中包含一个 "infrastructure" 和 "network" 个对象：

CREATE TABLE servers (infrastructure object(strict) as (
                #etc...
                os_name string, 
                #etc...
                network array(object as 
                (etc.., hosting_id string, etc... ))

我需要从 "infrastructure" 中查询 os_name 并从网络数组中查询 hosting_id。我该怎么做？我试图 google 找到正确的语法但没有成功。我想要这样的东西：

SELECT * FROM servers WHERE infrastructure[os_name] = "some value"

和

SELECT * FROM servers WHERE infrastructure["network"]["hosting_id"] = "some value"

Answer 1

ANY() is your friend, but be aware that it does not with arrays of objects. So you need to also consider this information。以下解决方案适用于最新的 Crate 版本 1.0.1：

SELECT * FROM servers 
WHERE 
  os_name = 'some value' 
AND 
  'some value' = ANY(network['hosting_id']);

如何从 sql 对象（CRATE DB）中查询项目

How to query an item from an sql object (CRATE DB)

sql

crate