[英]How to unpivot columns in kusto/kql/azure and put multiple columns into one
我在 Azure 分析中使用 Kusto 為我正在開發的游戲獲得了一張這樣的表格
datatable (ID_player:string, Timestamp:timespan, monster1:int, monster2:int, monster3:int)
[
"aaa", "12:00:00", 1,2,3
,"aaa", "12:10:00", 4,7,0
,"bbb", "12:30:00", 0,2,1
]
基本上,我需要切換到像這樣的格式
ID_Player Timespamp Monster Quantity
aaa 12:00:00 Monster1 1
aaa 12:00:00 Monster2 2
aaa 12:00:00 Monster3 3
aaa 12:10:00 Monster1 4
aaa 12:10:00 Monster2 7
aaa 12:10:00 Monster3 0
bbb 12:30:00 Monster1 0
bbb 12:30:00 monster2 2
bbb 12:30:00 Monster3 1
有什么想法嗎? 我很難使用一系列 CASE WHEN 但我認為這不是正確的解決方案。 提前致謝!!!
這里有 3 個更直接的解決方案,基於mv-expand & pack_dictionary() / pack_array()
pack_dictionary()
+ mv-expand kind = array
datatable (ID_player:string, Timestamp:timespan, monster1:int, monster2:int, monster3:int)
[
"aaa", "12:00:00", 1,2,3
,"aaa", "12:10:00", 4,7,0
,"bbb", "12:30:00", 0,2,1
]
| mv-expand kind = array monster = pack_dictionary("Monster1", monster1, "Monster2", monster2, "Monster3", monster3)
| extend Monster = tostring(monster[0]), Quantity = toint(monster[1])
| project-away monster*
pack_array()
x2 + mv- mv-expand
datatable (ID_player:string, Timestamp:timespan, monster1:int, monster2:int, monster3:int)
[
"aaa", "12:00:00", 1,2,3
,"aaa", "12:10:00", 4,7,0
,"bbb", "12:30:00", 0,2,1
]
| mv-expand Monster = pack_array("Monster1", "Monster2", "Monster3") to typeof(string)
,Quantity = pack_array( monster1, monster2, monster3 ) to typeof(int)
| project-away monster*
pack_array()
+ mv-expand with_itemindex
datatable (ID_player:string, Timestamp:timespan, monster1:int, monster2:int, monster3:int)
[
"aaa", "12:00:00", 1,2,3
,"aaa", "12:10:00", 4,7,0
,"bbb", "12:30:00", 0,2,1
]
| mv-expand with_itemindex = i Quantity = pack_array(monster1, monster2, monster3) to typeof(int)
| extend Monster = strcat("Monster", tostring(i + 1))
| project ID_player, Timestamp, Monster, Quantity
您可以使用pack()
和mv-apply
的組合。
例如:
datatable (ID_player:string, Timestamp:timespan, monster1:int, monster2:int, monster3:int)
[
"aaa", "12:00:00", 1,2,3
,"aaa", "12:10:00", 4,7,0
,"bbb", "12:30:00", 0,2,1
]
| mv-apply c = pack("monster1", monster1, "monster2", monster2, "monster3", monster3) on (
extend Monster = tostring(bag_keys(c)[0])
| extend Quantity = tolong(c[Monster])
)
| project-away monster*, c
ID_player | 時間戳 | 怪物 | 數量 |
---|---|---|---|
啊啊啊 | 12:00:00 | 怪物1 | 1 |
啊啊啊 | 12:00:00 | 怪物2 | 2 |
啊啊啊 | 12:00:00 | 怪物3 | 3 |
啊啊啊 | 12:10:00 | 怪物1 | 4 |
啊啊啊 | 12:10:00 | 怪物2 | 7 |
啊啊啊 | 12:10:00 | 怪物3 | 0 |
bbb | 12:30:00 | 怪物1 | 0 |
bbb | 12:30:00 | 怪物2 | 2 |
bbb | 12:30:00 | 怪物3 | 1 |
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