JSON_KEYS
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MariaDB starting with 10.2.3
JSON functions were added in MariaDB 10.2.3.
Syntax
JSON_KEYS(json_doc[, path])
Description
Returns the keys as a JSON array from the top-level value of a JSON object or, if the optional path argument is provided, the top-level keys from the path. Returns NULL if any of the arguments are null, a given path does not locate an object, or if the json_doc argument is not an object.
An error will occur if JSON document is invalid, the path is invalid or if the path contains a * or ** wildcard.
Examples
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