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BSON_
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The BSON_ function converts a BSON array of documents or concatenated BSON documents to a PSQL Array.
Syntax
BSON_INPUT_STREAM_TO_ARRAY(<input>)Arguments
-
input: A valid BSON array, an expression that evaluates to a valid BSON array, or concatenated BSON documents.
Return Type
A PSQL array.
Examples
Note: The following examples explicitly cast string to BSON for clarity.
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Convert a BSON array:
SELECT table_col:>JSON AS ResultFROM TABLE(BSON_INPUT_STREAM_TO_ARRAY('[{"a":1},{"b":2},{"c":3},{"d":4}]':>BSON));+---------+ | Result | +---------+ | {"a":1} | | {"b":2} | | {"c":3} | | {"d":4} | +---------+SELECT table_col:>JSON AS ResultFROM TABLE(BSON_INPUT_STREAM_TO_ARRAY('[{"a":1,"b":"abcdef","c":null},{"b":2,"e":{"f":{"g":[]}}},{"c":3},{}]':>JSON:>BSON));+-------------------------------+ | Result | +-------------------------------+ | {"a":1,"b":"abcdef","c":null} | | {"b":2,"e":{"f":{"g":[]}}} | | {"c":3} | | {} | +-------------------------------+ -
Convert concatenated documents:
SELECT table_col:>JSON AS ResultFROM TABLE(BSON_INPUT_STREAM_TO_ARRAY(x'0C00000010610001000000000C00000010620002000000000C00000010630003000000000C0000001064000400000000'))AS Result;+---------+ | Result | +---------+ | {"a":1} | | {"b":2} | | {"c":3} | | {"d":4} | +---------+where,
x'0C00000010610001000000000C00000010620002000000000C00000010630003000000000C0000001064000400000000'is a hex literal that is formed by concatenating the following BSON documents:Document
Hex Representation
{"a":1}0C0000001061000100000000{"b":2}0C0000001062000200000000{"c":3}0C0000001063000300000000{"d":4}0C0000001064000400000000
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