全国省市级联sql表

SELECT
    *
FROM
    hat_province AS p
LEFT JOIN hat_city as c ON p.provinceID = c.father
LEFT JOIN hat_area AS a ON c.cityID = a.father;

[
    {
        "value": "130000",
        "label": "河北省",
        "children": [
            {
                "value": "130100",
                "label": "石家庄市",
                "children": [
                    {
                        "value": "130102",
                        "label": "长安区"
                    },
                    {
                        "value": "130104",
                        "label": "桥西区"
                    }
                ]
            },
            {
                "value": "130200",
                "label": "唐山市",
                "children": [
                    {
                        "value": "130202",
                        "label": "路南区"
                    },
                    {
                        "value": "130203",
                        "label": "路北区"
                    }
                ]
            }
        ]
    },
    {
        "value": "130000",
        "label": "河北省",
        "children": [
            {
                "value": "130100",
                "label": "石家庄市",
                "children": [
                    {
                        "value": "130102",
                        "label": "长安区"
                    },
                    {
                        "value": "130104",
                        "label": "桥西区"
                    }
                ]
            },
            {
                "value": "130200",
                "label": "唐山市",
                "children": [
                    {
                        "value": "130202",
                        "label": "路南区"
                    },
                    {
                        "value": "130203",
                        "label": "路北区"
                    }
                ]
            }
        ]
    }
]