f-ck 0.1.0

Fields combined with columnar keys
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

{
  "sources": [
    {
      "id": "customers",
      "path": "test_data/customers.csv",
      "format": "csv"
    },
    {
      "id": "orders", 
      "path": "test_data/orders.csv",
      "format": "csv"
    }
  ],
  "destination_schema": [
    {
      "name": "customer_id",
      "data_type": "Int64"
    },
    {
      "name": "customer_name",
      "data_type": "String"
    },
    {
      "name": "email",
      "data_type": "String"
    },
    {
      "name": "total_spent",
      "data_type": "Float64"
    }
  ],
  "primary_keys": {
    "logic": "or",
    "keys": ["customer_id"]
  },
  "mappings": [
    {
      "destination_field": "customer_id",
      "policy": {
        "type": "firstMatch",
        "priority": ["customers", "orders"]
      },
      "source_fields": [
        {
          "id": "cust_id",
          "source_file_id": "customers",
          "column_name": "id"
        },
        {
          "id": "order_cust_id",
          "source_file_id": "orders", 
          "column_name": "customer_id"
        }
      ]
    },
    {
      "destination_field": "customer_name",
      "policy": {
        "type": "firstMatch",
        "priority": ["customers"]
      },
      "source_fields": [
        {
          "id": "name",
          "source_file_id": "customers",
          "column_name": "name"
        }
      ]
    },
    {
      "destination_field": "email",
      "policy": {
        "type": "firstMatch", 
        "priority": ["customers"]
      },
      "source_fields": [
        {
          "id": "email",
          "source_file_id": "customers",
          "column_name": "email"
        }
      ]
    },
    {
      "destination_field": "total_spent",
      "policy": {
        "type": "sum"
      },
      "source_fields": [
        {
          "id": "order_total",
          "source_file_id": "orders",
          "column_name": "order_total"
        }
      ]
    }
  ]
}