mysql 將明細表/副表的某個字段合併

SELECT  b.name,CONCAT('[\"全部\",\"',GROUP_CONCAT(a.name ORDER BY a.id SEPARATOR  '\"\,\"'),'\"]') AS group1
FROM sys_city a
LEFT JOIN sys_stateprovince b ON a.stateProvinceId=b.id
GROUP BY a.stateProvinceId