Dapatkan kunci Json di MySQL untuk nilai tertentu

Seperti yang saya katakan, ini bisa menjadi tantangan untuk menguraikan JSON di MySQL karena Anda berurusan dengan kunci berbasis teks di sini.
Jadi, Anda perlu menggunakan JSON_KEYS() untuk menggabungkannya dengan generator angka, jalur JSON dinamis dibuat untuk digunakan di JSON_EXTRACT()

8 fungsi MySQL JSON_TABLE() membuatnya jauh lebih mudah..

Kueri

 SELECT
  JSON_UNQUOTE(
    JSON_EXTRACT(json ,  CONCAT('$.', SUBSTRING_INDEX(
       SUBSTRING_INDEX(json_parsed, ',', number_generator.number)
       , ','
       , -1
     ), '.name'))) AS name
FROM (

  SELECT 
   @row := @row + 1 AS number
  FROM (
    SELECT 0 UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION   SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9
  ) row1
  CROSS JOIN (
    SELECT 0 UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION  SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9
  ) row2
  CROSS JOIN (
    SELECT @row := 0 
  ) init_user_params 
) AS number_generator
CROSS JOIN (

    SELECT  
        SUBSTRING(json_keys, 2, json_keys_length - 2) AS json_parsed
      , json_keys
      , json
      , JSON_LENGTH(json_keys) AS json_array_length                       
    FROM (
       SELECT 
            JSON_KEYS(record.json) AS json_keys
          , json
          , LENGTH(JSON_KEYS(record.json)) AS json_keys_length
       FROM (
          SELECT 
             '{
                "Intitule": {
                   "name": "Intitule de la formation",
                   "stats": false,
                   "is_array": false,
                   "is_filter": true,
                   "chart": "pie",
                   "col": "6"
                },
                "Fin": {
                    "name": "Date de fin",
                    "stats": false,
                    "is_array": false,
                    "is_filter": false,
                    "chart": "pie",
                    "col": "6"
                    }
                }' AS json
          FROM  
            DUAL  
       ) AS record                     
    ) AS json_information  
  ) AS json_init
WHERE
   number_generator.number BETWEEN 0 AND json_array_length
 AND
   JSON_EXTRACT(json ,  CONCAT('$.', SUBSTRING_INDEX(
     SUBSTRING_INDEX(json_parsed, ',', number_generator.number)
     , ','
     , -1
   ), '.is_filter')) = true 

Hasil

| name                     |
| ------------------------ |
| Intitule de la formation |

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