Check out example codes for "mysql json get value". It will help you in understanding the concepts better.

Code Example 1

SELECT JSON_EXTRACT('{"a": 1, "b": 2, "c": 3}', '$.b') AS 'Result';

Code Example 2

JSON_CONTAINS('[1,2,3,4,5]','7','$') Returns: 0
  JSON_CONTAINS('[1,2,3,4,5]','1','$') Returns: 1

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