[英]Data Explorer KQL filtering and mapping JSONs in a list (dynamic type)
我想過濾和轉換數組中的 JSON。
我有下表:
let fooTable = datatable(str: string, record: dynamic) [
"name1", dynamic([{"q": "foo", "type": "B1"}]),
"name2", dynamic([{"q": "bar", "type": "C1"}, {"q": "bar2", "type": "B1"}]),
"name3", dynamic([{"q": "foo", "type": "C1"}, {"q": "foo2", "type": "C1"}]),
"name4", dynamic([{"q": "foo", "type": "B1"}]),
"name5", dynamic([{"q": "b42", "type": "B1"}]),
"name6", dynamic([{"q": "f42", "type": "C1"}]),
"name7", dynamic([{"q": "foo", "type": "B1"}])
];
我想按“類型”字段過濾 JSON,並進行較小的轉換。 所以假設我想用“類型”“C1”進行過濾,所以我的 output 將是:
[
"name2", dynamic([{"q": "bar", "type": "C1", "qtype": "barC1"}, {"q": "bar2", "type": "B1", "qtype": "bar2B1"}]),
"name3", dynamic([{"q": "foo", "type": "C1", "qtype": "fooC1"}, {"q": "foo2", "type": "C1", "qtype": "foo2C1"}]),
"name6", dynamic([{"q": "f42", "type": "C1", "qtype": "f42C1"}
]
我嘗試了以下內容:
fooTable
| mv-apply v=record on (
where v.type == "C1"
| extend r2 = pack(
"q", v.q,
"type", v.type,
"qtype", strcat(v.q, v.type))
| summarize record = make_list(r2)
)
| project str, record
但如果類型不是“C1”,它只會在行中返回一個空數組:
name1 []
name2 [{"q":"bar","type":"C1","qtype":"barC1"}]
name3 [{"q":"foo","type":"C1","qtype":"fooC1"},{"q":"foo2","type":"C1","qtype":"foo2C1"}]
name4 []
name5 []
name6 [{"q":"f42","type":"C1","qtype":"f42C1"}]
name7 []
我想完全過濾這些行(沒有空行)。
這行得通嗎?
let fooTable = datatable(str: string, record: dynamic) [
"name1", dynamic([{"q": "foo", "type": "B1"}]),
"name2", dynamic([{"q": "bar", "type": "C1"}, {"q": "bar2", "type": "B1"}]),
"name3", dynamic([{"q": "foo", "type": "C1"}, {"q": "foo2", "type": "C1"}]),
"name4", dynamic([{"q": "foo", "type": "B1"}]),
"name5", dynamic([{"q": "b42", "type": "B1"}]),
"name6", dynamic([{"q": "f42", "type": "C1"}]),
"name7", dynamic([{"q": "foo", "type": "B1"}])
];
fooTable
| mv-apply record on (
where record.type=="C1"
)
| summarize make_list(record) by str
字符串 | 列表記錄 |
---|---|
名稱2 | [ { “q”:“酒吧”, “類型”:“C1” } ] |
名稱3 | [ { “q”:“富”, “類型”:“C1” }, { “q”:“foo2”, “類型”:“C1” } ] |
名稱6 | [ { “q”:“f42”, “類型”:“C1” } ] |
你可以試試這個:
type
= C1
的記錄qtype
bag_merge()
function: https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/bag-merge-function擴展記錄let fooTable = datatable(str: string, record: dynamic) [
"name1", dynamic([{"q": "foo", "type": "B1"}]),
"name2", dynamic([{"q": "bar", "type": "C1"}, {"q": "bar2", "type": "B1"}]),
"name3", dynamic([{"q": "foo", "type": "C1"}, {"q": "foo2", "type": "C1"}]),
"name4", dynamic([{"q": "foo", "type": "B1"}]),
"name5", dynamic([{"q": "b42", "type": "B1"}]),
"name6", dynamic([{"q": "f42", "type": "C1"}]),
"name7", dynamic([{"q": "foo", "type": "B1"}])
];
fooTable
| where tostring(record) has '"type":"C1"'
| mv-apply r = record on (
extend record = bag_merge(r, pack("qtype", strcat(r.q, r.type)))
| summarize record = make_list(record)
)
這行得通嗎?
let fooTable = datatable(str: string, record: dynamic) [
"name1", dynamic([{"q": "foo", "type": "B1"}]),
"name2", dynamic([{"q": "bar", "type": "C1"}, {"q": "bar2", "type": "B1"}]),
"name3", dynamic([{"q": "foo", "type": "C1"}, {"q": "foo2", "type": "C1"}]),
"name4", dynamic([{"q": "foo", "type": "B1"}]),
"name5", dynamic([{"q": "b42", "type": "B1"}]),
"name6", dynamic([{"q": "f42", "type": "C1"}]),
"name7", dynamic([{"q": "foo", "type": "B1"}])
];
fooTable
| mv-apply record on (
where record.type=="C1"
)
| summarize make_list(record) by str
另一種選擇是:
let fooTable = datatable(str: string, record: dynamic) [
"name1", dynamic([{"q": "foo", "type": "B1"}]),
"name2", dynamic([{"q": "bar", "type": "C1"}, {"q": "bar2", "type": "B1"}]),
"name3", dynamic([{"q": "foo", "type": "C1"}, {"q": "foo2", "type": "C1"}]),
"name4", dynamic([{"q": "foo", "type": "B1"}]),
"name5", dynamic([{"q": "b42", "type": "B1"}]),
"name6", dynamic([{"q": "f42", "type": "C1"}]),
"name7", dynamic([{"q": "foo", "type": "B1"}])
];
fooTable
| mv-apply record on (
where record.type=="C1"
| summarize make_list(record)
| where array_length( list_record) > 0
)
字符串 | 列表記錄 |
---|---|
名稱2 | [ { “q”:“酒吧”, “類型”:“C1” } ] |
名稱3 | [ { “q”:“富”, “類型”:“C1” }, { “q”:“foo2”, “類型”:“C1” } ] |
名稱6 | [ { “q”:“f42”, “類型”:“C1” } ] |
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