How to Use JSON Data Field in MySQL Database

Websolutionstuff | Jun-04-2021 | Categories : PHP MySQL

Today, In this post we will see how to use json field in mysql database. In this tutorial i will give mysql json data type example and we will see how to store json data in mysql using php.

here we will see differents type of json functions with example and we will see how to insert json data into mysql using php.

here, we are creating category table.

CREATE TABLE `post` (
  `id` MEDIUMINT(8) UNSIGNED NOT NULL AUTO_INCREMENT,
  `name` VARCHAR(200) NOT NULL,
  `category` JSON DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=INNODB;

 

Add JSON Data

JSON data can be passed in INSERT or UPDATE statements. For ex, our post category can be passed as an array (inside a string):

INSERT INTO `post` (`name`, `category`)
VALUES (
  'web developing',
  '["JavaScript", "PHP", "JSON"]'
);

 

JSON can also be created with these:

JSON_ARRAY()  function create arrays like this :

-- returns [1, 2, "abc"]:
SELECT JSON_ARRAY(1, 2, 'abc');

 

JSON_OBJECT() function create objects like this :

-- returns {"a": 1, "b": 2}:
SELECT JSON_OBJECT('a', 1, 'b', 2);

 

JSON_QUOTE() function quotes a string as a JSON value.

-- returns "[1, 2, \"abc\"]":
SELECT JSON_QUOTE('[1, 2, "abc"]');

 

JSON_TYPE() function allows you to check JSON value types. It should return OBJECT, ARRAY, a scalar type (INTEGER, BOOLEAN, etc), NULL, or an error

-- returns ARRAY:
SELECT JSON_TYPE('[1, 2, "abc"]');

-- returns OBJECT:
SELECT JSON_TYPE('{"a": 1, "b": 2}');

-- returns an error:
SELECT JSON_TYPE('{"a": 1, "b": 2');

 

JSON_VALID() function returns 1 if the JSON is valid or 0 otherwise.

-- returns 1:
SELECT JSON_TYPE('[1, 2, "abc"]');

-- returns 1:
SELECT JSON_TYPE('{"a": 1, "b": 2}');

-- returns 0:
SELECT JSON_TYPE('{"a": 1, "b": 2');

 

If you are insert an invalid JSON data then it will create an error and the whole record will not be inserted/updated.

 

Recommended Post
Featured Post
Autotab To Next Input Field JQuery
Autotab To Next Input Field JQ...

In this article, we will see how to focus on the next input when the max length is reached. Sometimes we have...

Read More

Aug-19-2020

How To Create Zip File In Laravel 7/8
How To Create Zip File In Lara...

In this tutorial I will give you example of how to create zip file in laravel 7/8. Some times client's have requirme...

Read More

Dec-17-2021

Laravel 9 Create Zip File And Download
Laravel 9 Create Zip File And...

In this article, we will see laravel 9 create a zip file and download it. Laravel provides ZipArchive class fo...

Read More

May-02-2022

Laravel 9 Inner Join Query Example
Laravel 9 Inner Join Query Exa...

In this article, we will see laravel 9 inner join query example. Also, see how to join two tables in laravel 9. In larav...

Read More

Mar-30-2022