table_create Purchases TABLE_HASH_KEY ShortText
[[0,0.0,0.0],true]
column_create Purchases item COLUMN_SCALAR ShortText
[[0,0.0,0.0],true]
column_create Purchases price COLUMN_SCALAR UInt32
[[0,0.0,0.0],true]
table_create Settlements TABLE_HASH_KEY ShortText
[[0,0.0,0.0],true]
column_create Settlements purchases COLUMN_VECTOR Purchases
[[0,0.0,0.0],true]
column_create Purchases settlements_purchases COLUMN_INDEX Settlements purchases
[[0,0.0,0.0],true]
load --table Settlements
[
{
  "_key": "super market",
  "purchases": [
     {"_key": "super market-1", "item": "apple", "price": 100},
     {"_key": "super market-2", "item": "milk",  "price": 200}
  ]
},
{
  "_key": "shoes shop",
  "purchases": [
     {"_key": "shoes shop-1", "item": "sneakers", "price": 3000}
  ]
}
]
[[0,0.0,0.0],2]
dump   --dump_plugins no   --dump_schema no
load --table Purchases
[
["_key","item","price"],
["super market-1","apple",100],
["super market-2","milk",200],
["shoes shop-1","sneakers",3000]
]

load --table Settlements
[
["_key","purchases"],
["super market",["super market-1","super market-2"]],
["shoes shop",["shoes shop-1"]]
]

column_create Purchases settlements_purchases COLUMN_INDEX Settlements purchases
