MYSQL 分组并计数在 JSON 列

Question

我有一个 sql table json 这样的数据

id  | int(11) Primary Key
reasons | json

在 json_data 列我存储了数组。

id| reasons

1 | ["price","inactive","small","other"]
2 | ["price","other"]
3 | ["price","inactive"]

我需要按“原因”分组并计算数量

price | 3
inactive | 2
small | 1
other  | 2

我试过了；

  $dealInvestors = Deal::select(
            "JSON_CONCAT(decline_reasons,'$.$all_possible_reasons)",
            'count(reasons) as count',
        )
            ->groupBy('reasons')
            ->get();

但是没有用。谁能帮帮我？

Answer 1

SELECT reason, COUNT(*)
FROM test
CROSS JOIN JSON_TABLE(test.reasons,
                      '$[*]' COLUMNS (reason VARCHAR(255) PATH '$')
                      ) jsontable
GROUP BY reason

https://dbfiddle.uk/?rdbms=mysql_8.0&fiddle=43cdbb8bfca8aa3cd3e82ccf775a577e

PS。我怀疑此查询是否可以转换为 Laravel 语法。使用原始 SQL.

MYSQL 分组并计数在 JSON 列

MYSQL group by and count on JSON column

mysql

laravel

eloquent