问题描述
如何使用sql API仅从comosdb中的复杂嵌套对象(具有动态键)中查询那些Itemcount> 10的用户? UDF不是首选。
类似的东西
从c中选择c.username,其中c.Data [*]。Order.ItemCount> 10;
{
{
"Username": "User1","Data": {
"RandomGUID123": {
"Order": {
"Item": "ItemName123","ItemCount" : "40"
},"ShipmentNumber": "7657575"
},"RandomGUID976": {
"Order": {
"Item": "ItemName7686"
"ItemCount" : "7"
},"ShipmentNumber": "876876"
}
}
},{
"Username": "User2","Data": {
"RandomGUID654": {
"Order": {
"Item": "ItemName654","ItemCount" : "9"
},"ShipmentNumber": "7612575"
},"RandomGUID908": {
"Order": {
"Item": "ItemName545"
"ItemCount" : "6"
},"ShipmentNumber": "6454"
}
}
}
}
解决方法
我不确定如何处理未知密钥,但是如果您愿意将密钥建模为值(我认为是更简单,更简洁),则可以:
{
"Username": "User1","Data": [
{
"Id": "RandomGUID123","Order": {
"Item": "ItemName123","ItemCount": 40
},"ShipmentNumber": "7657575"
},{
"Id": "RandomGUID976","Order": {
"Item": "ItemName7686","ItemCount": 7
},"ShipmentNumber": "876876"
}
]
}
查询如下:
SELECT DISTINCT VALUE(c.Username)
FROM c
JOIN (SELECT VALUE d from d IN c.Data where d["Order"].ItemCount > 10)
结果:
[
"User1"
]
“订单”是保留关键字,需要使用方括号语法来引用。
,诺亚回答,将密钥建模为值是一种实现方法。
此外,还有另一种无需更改文档架构即可实现的方法。像这样创建UDF:
function getResult(data){
for(var key in data){
const itemCount = data[key].Order.ItemCount;
if (parseFloat(itemCount).toString() != "NaN" && parseFloat(itemCount) > 10 ) {
return true;
}
}
return false;
}
然后运行此sql:
SELECT c.Username FROM c where udf.getResult(c.Data)
结果:
[
{
"Username": "User1"
}
]