JSON_EXTRACT_DOUBLE

Overview

Extracts a value from a JSON object by path and returns it as DOUBLE. Returns NULL if the path does not exist or the value is null.

Syntax

JSON_EXTRACT_DOUBLE(<json>, <path>)

Parameters

• <json>: JSON type, the source data. Strings must first be converted using PARSE_JSON.
• <path>: STRING type, a JSONPath expression such as '$.field'.

Examples

SELECT json_extract_double(PARSE_JSON('{"price":3.14}'), '$.price'); -- 3.14 -- Path does not exist, returns NULL SELECT json_extract_double(PARSE_JSON('{"price":3.14}'), '$.other'); -- NULL

Related Documentation

• JSON_EXTRACT_FLOAT, JSON_EXTRACT_INT, JSON_EXTRACT_STRING
• GET_JSON_OBJECT — general-purpose function that extracts values as strings
• PARSE_JSON