Flattened Documents Model
Gravity returns a single table representing a JOIN of the available documents in the file. Additionally, nested sibling values (child paths at the same height), will be treated as a CROSS JOIN.
Example Raw Data:
{
"people": [
{
"personal": {
"age": 20,
"gender": "M",
"name": {
"first": "John",
"last": "Doe"
}
},
"vehicles": [
{
"type": "car",
"model": "Honda Civic",
"insurance": {
"company": "ABC Insurance",
"policy_num": "12345"
},
"maintenance": [
{
"date": "07-17-2017",
"desc": "oil change"
},
{
"date": "01-03-2018",
"desc": "new tires"
}
]
},
{
"type": "truck",
"model": "Dodge Ram",
"insurance": {
"company": "ABC Insurance",
"policy_num": "12345"
},
"maintenance": [
{
"date": "08-27-2017",
"desc": "new tires"
},
{
"date": "01-08-2018",
"desc": "oil change"
}
]
}
],
"source": "internet"
},
{
"personal": {
"age": 24,
"gender": "F",
"name": {
"first": "Jane",
"last": "Roberts"
}
},
"vehicles": [
{
"type": "car",
"model": "Toyota Camry",
"insurance": {
"company": "Car Insurance",
"policy_num": "98765"
},
"maintenance": [
{
"date": "05-11-2017",
"desc": "tires rotated"
},
{
"date": "11-03-2017",
"desc": "oil change"
}
]
},
{
"type": "car",
"model": "Honda Accord",
"insurance": {
"company": "Car Insurance",
"policy_num": "98765"
},
"maintenance": [
{
"date": "10-07-2017",
"desc": "new air filter"
},
{
"date": "01-13-2018",
"desc": "new brakes"
}
]
}
],
"source": "phone"
}
]
}
Example Flattened Documents
20
M
John
Doe
internet
car
Honda Civic
ABC Insurance
12345
2017-07-17
oil change
20
M
John
Doe
internet
car
Honda Civic
ABC Insurance
12345
2018-01-03
new tires
20
M
John
Doe
internet
truck
Dodge Ram
ABC Insurance
12345
2017-08-27
new tires
20
M
John
Doe
internet
truck
Dodge Ram
ABC Insurance
12345
2018-01-08
oil change
24
F
Jane
Roberts
phone
car
Toyota Camry
Car Insurance
98765
2017-05-11
tires rotated
24
F
Jane
Roberts
phone
car
Toyota Camry
Car Insurance
98765
2017-11-03
oil change
24
F
Jane
Roberts
phone
car
Honda Accord
Car Insurance
98765
2017-10-07
new air filter
24
F
Jane
Roberts
phone
car
Honda Accord
Car Insurance
98765
2018-01-13
new brakes
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