[英]How to SQL query a nested list and array in a MS Azure CosmosDB?
I have the following ( Azure ) CosmosDB (sub) structure, that has 2 nested arrays:我有以下 ( Azure ) CosmosDB (子)结构,它有 2 个嵌套的 arrays:
{
"id": "documentTypes",
"SomeThing": "SomeThing",
"configuration": [
{
"language": "en",
"list": [
{
"id": 1,
"name": "Supporting Documents"
},
{
"id": 2,
"name": "Summary PDF"
},
]
}
],
}
I have tried the following queries, with poor results.我尝试了以下查询,但结果很差。
SELECT * FROM c WHERE c.documentTypes.configuration[0].list[0].id FROM c
and和
SELECT
p.id,
p.name
FROM f
JOIN c IN f.configuration
JOIN p IN c.list
WHERE c.id == 'documentTypes'
Q
: How can I get only the list of name
and id
s? Q
:我怎样才能只得到name
和id
的列表?
You need this?你需要这个?
SELECT ARRAY(SELECT VALUE e FROM c JOIN d IN c["configuration"] JOIN e IN d["list"]) AS Result FROM c
Output: Output:
[ { "Result": [ { "id": 1, "name": "Supporting Documents" }, { "id": 2, "name": "Summary PDF" } ] } ]
[ { "Result": [ { "id": 1, "name": "Supporting Documents" }, { "id": 2, "name": "Summary PDF" } ] } ]
My own solution was similar to Sajeetharan 's:我自己的解决方案类似于Sajeetharan的:
SELECT list.id, list.name FROM c
JOIN configuration IN c.configuration
JOIN list IN configuration.list
WHERE c.id = 'documentTypes'
This to me look a bit simpler by not needing [""]
and the ARRAY()
function, and also doesn't produce the additional Result
item.这对我来说看起来更简单一些,因为不需要
[""]
和ARRAY()
function,而且不会产生额外的Result
项。 I have not idea if there is any performance difference.我不知道是否有任何性能差异。
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