How to query JSON field arrays in MySQL?

In MySQL, you can use the JSON_EXTRACT function to query arrays in JSON fields. The syntax of this function is as follows:

JSON_EXTRACT(json_doc, path)

In this case, json_doc refers to the name or expression of the JSON field, and path refers to the path of the JSON array to be extracted.

Here is an example demonstrating how to query an array in a JSON field within a table named ‘data’.

SELECT JSON_EXTRACT(json_column, '$.array_field') AS array_data
FROM data;

In the above example, json_column refers to the column name containing JSON fields, and $.array_field refers to the path of the JSON array to be extracted.

Please note that the result returned by JSON_EXTRACT is a JSON text, if you want to access elements of an array, you can further use the JSON_TABLE or JSON_EXTRACT function to extract them.