mysql - 我如何添加名称 : value pair to an existing mysql stored json object

Question

如何将新属性添加到存储在 mysql 表列中的 json 对象？现在我将 json_encode 数据存储为:

"1":{"lastname":"blah","firstname":"R.A.","function":"Manager","email":"test@hotmail.com","barcode":"33432799181"}  

我想添加一个新的数据对，vised:0，我想在有人被访问后立即更新。

"1":{"lastname":"blah","firstname":"R.A.","function":"Manager","email":"test@hotmail.com","barcode":"33432799181", "visited":"0"}

如何将元素推送到现有的 json 数据？

$jsondataTmp = json_decode($core,true);
$custom = array('visited'=>'0');
$jsondataTmp[] = $custom;

但它添加了一个数组而不是在每个数组中

  [1] => Array
        (
            [lastname] => blah
            [firstname] => R.A.
            [function] => Manager
            [email] => test@hotmail.com
            [barcode] => 33432799181
        )

    [2] => Array
        (
           [lastname] => blah
            [firstname] => R.A.
            [function] => Manager
            [email] => test@hotmail.com
            [barcode] => 33432799181
        )

    [3] => Array
        (
            [visited] => 0
        )

而不是

[2] => Array
            (
               [lastname] => blah
                [firstname] => R.A.
                [function] => Manager
                [email] => test@hotmail.com
                [barcode] => 33432799181
[visited] => 0
            )

Answer 1

MySQL 不原生支持 JSON - MySQL 仍然是纯 RDBMS 系统。

目前一个简单的破解方法是使用 REPLACE 函数。

UPDATE table_name
SET column_name = REPLACE ( column_name, "}", ',"visited":"0"}';