The Ultimate Guide to High Availability with MariaDB

Comments - JSON_ARRAY

2 days, 13 hours ago Norman Rice
Re: JSON_ARRAY

NOTE: Depending on which functions you use to handle JSON, MariaDB will cast JSON_OBJECTs to (escaped) JSON string! So be mindful when putting those values into a JSON_Array.

For example:

SELECT JSON_ARRAY(
        JSON_OBJECT('result', 'ok'),
      IF(    TRUE
           , JSON_OBJECT('result', 'escaped-string')
           , ''  -- <-- Presumably because this IF/ELSE returns a string, the TRUE case will also be cast to string
      ),
      CASE
        WHEN TRUE THEN JSON_OBJECT('result', 'ok')
      END,
      CASE
        WHEN TRUE THEN JSON_OBJECT('result', 'escaped-string')
        ELSE '' -- <-- Presumably because this CASE/ELSE returns a string, the TRUE case will also be cast to string
      END
  ) AS `testcase`
 
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