How to avoid the duplicated data entry after parsing json in kusto? - kql

Question

I have following sample json data.
{
"data": {
"type": "ABC",
"id": "17495500314",
"attributes": {
[!["event": "update",
"gps_vali][1]][1]d": true,
"gps": {
"distance_diff": 6.48,
"total_distance": 848.6
},
"hdop": 79,
"fuel_level": 46.8,
"total_fuel_used": 60443.9,
"location": {
"latitude": 411.372618,
"longitude": -1.254931,
"relative_position": {
"distance": "37",
}
},
"idle_periods": []
},
"relationships": {
"assets": {
"data": [
{
"type": "ABCDFTTG",
"id": "1589799143500003",
"attributes": {
"external_id": "ABCDFTTG",
"hardware_id": "ABCDFTTG"
}
}
]
},
"devices": {
"data": [
{
"type": "ABCDFTTG",
"id": "1585231172900341",
"attributes": {
"serial": "5572016191"
}
},
{
"type": "tablet",
"id": "1587893062600175",
"attributes": {
"serial": "ABCDFTTG"
}
}
]
},
"users": {
"data": [
{
"type": "user",
"id": "ABCDFTTG",
"attributes": {
"external_id": "ABCDFTTG"
}
}
]
}
}
},
"meta": {
"message_id": "11eb-8c75-0b3f87aedbb5",
"consumer_version": "1.2.0",
"origin_version": null,
"timestamp": "2021-06-14T17:42:29Z"
}
}
I want only one row instead of this two. Here is my kusto query which is used for parsing json data into table columns.
Test
|where messageId =="123"
//|mv-expand message=message.data.attributes
|mv-expand message
|mv-expand Value=message.data.relationships.assets.['data']
|mv-expand value_devices=message.data.relationships.devices.['data']
|mv-expand value_user=message.data.relationships.users.['data']
| project type=message.data.type,id=message.data.id,
event=tostring(message.data.attributes.event),
logged_at=tostring(message.data.attributes.logged_at),
distance=toint(message.data.attributes.location.relative_position.distance),
// Value=message.data.relationships.assets.['data'],//.['data']
type_asset=Value.type,asset_id=Value.id,
device_type=value_devices.type,device_id=value_devices.id,
device_attr_serial=value_devices.attributes.serial,
user_type=value_user.type,user_id=value_user.id,
user_external_id=value_user.attributes.external_id
This duplicate row appeared after adding user tag this tag is array so how to handle this array with single id.
I have parse my json data any got the following output.
Expected output should be like
check device_type and device_id columns