BSON TYPE

mongoexport的時候抛出錯誤

Invalid BSON object type for CSV output: 10

以下列出BSON TYPE：

BSON Types

BSON is a binary serialization format used to store documentsand make remote procedure calls in MongoDB. The BSON specification islocated at bsonspec.org.

BSON supports the following data types as values in documents. Each datatype has a corresponding number that can be used with the$type operator to query documents by BSON type.

Type	Number
Double	1
String	2
Object	3
Array	4
Binary data	5
Object id	7
Boolean	8
Date	9
Null	10
Regular Expression	11
JavaScript	13
Symbol	14
JavaScript (with scope)	15
32-bit integer	16
Timestamp	17
64-bit integer	18
Min key	255
Max key	127

When comparing values of different BSON types, MongoDB usesthe following comparison order, from lowest to highest:

1. MinKey (internal type)
2. Null
3. Numbers (ints, longs, doubles)
4. Symbol, String
5. Object
6. Array
7. BinData
8. ObjectId
9. Boolean
10. Date, Timestamp
11. Regular Expression
12. MaxKey (internal type)

MongoDB treats some types as equivalent for comparison purposes. Forinstance, numeric types undergo conversion before comparison.

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作者：john