从键和值列表中创建一个 属性 包

Question

我有一个包含键的列表和另一个包含值的列表（通过拆分日志行获得）。如何将两者结合起来在 Kusto 中制作一个 proeprty-bag？

let headers = pack_array("A", "B", "C");
datatable(RawData:string)
[
    "1,2,3",
    "4,5,6",
]
| expand fields = split(RawData, ",")
| expand dict = ???

预计：

dict
-----
{"A": 1, "B": 2, "C": 3}
{"A": 4, "B": 5, "C": 6}

Answer 1

这是一个选项，它使用以下组合：

• mv-apply: https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/mv-applyoperator
• pack(): https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/packfunction
• make_bag(): https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/make-bag-aggfunction

let keys = pack_array("A", "B", "C");
datatable(RawData:string)
[
    "1,2,3",
    "4,5,6",
]
| project values = split(RawData, ",")
| mv-apply with_itemindex = i key = keys to typeof(string) on (
    summarize dict = make_bag(pack(key, values[i]))
)

values	dict
[ "1", "2", "3" ]	{ "A": "1", "B": "2", "C": "3" }
[ "4", "5", "6" ]	{ "A": "4", "B": "5", "C": "6" }