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[英]Efficient ArangoDB AQL query that can find all Edges in Collection that go To and From the same Documents
[英]How to find common struct for all documents in collection?
我有一组文档,它们或多或少具有相同的结构。 但我需要找到所有文档中存在的字段。 有人认为:
{
"name": "Jow",
"salary": 7000,
"age": 25,
"city": "Mumbai"
},
{
"name": "Mike",
"backname": "Brown",
"sex": "male",
"city": "Minks",
"age": 30
},
{
"name": "Piter",
"hobby": "footbol",
"age": 25,
"location": "USA"
},
{
"name": "Maria",
"age": 22,
"city": "Paris"
},
所有文档都有name
和age
。 如何使用 ArangoDB 找到它们?
您可以执行以下操作:
IE
LET attrs = (FOR item IN test RETURN ATTRIBUTES(item, true))
RETURN APPLY("INTERSECTION", attrs)
APPLY
是必需的,因此attrs
中的每个属性列表都可以作为单独的参数传递给INTERSECTION
。
文档:
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