[Collection] 请教主帮忙优化

有所有字段信息的数据，需要重新组织出表和字段的关系，并且字段是按照要求排序的。

原始数据中

“table_name”：字段所属表
“field_name“ ： 字段名
“field_col_num"：字段排序号

期待输出的结果是

{
    "table_name" : [
        "field_name",
        "field_name",        
        ....
    ]
}

测试数据如下：

原始数据：

[
{
"table_name": "dp",
"field_name": "dpcryptfeat",
"field_col_num": "6"
},
{
"table_name": "dp",
"field_name": "dppath",
"field_col_num": "4"
},
{
"table_name": "dp",
"field_name": "dpauthfeat",
"field_col_num": "5"
},
{
"table_name": "dp",
"field_name": "dpnick",
"field_col_num": "3"
},
{
"table_name": "icc",
"field_name": "iccbufsizeprot",
"field_col_num": "13"
},
{
"table_name": "icc",
"field_name": "iccmech",
"field_col_num": "5"
},
{
"table_name": "icc",
"field_name": "iccnick",
"field_col_num": "3"
},
{
"table_name": "icc",
"field_name": "iccprocmanager",
"field_col_num": "8"
},
{
"table_name": "icc",
"field_name": "iccdesc",
"field_col_num": "4"
},
{
"table_name": "icc",
"field_name": "iccprot",
"field_col_num": "6"
},
{
"table_name": "icc",
"field_name": "iccformatprot",
"field_col_num": "14"
}
]

输出结果：

{
"dp": [
"dpnick",
"dppath",
"dpauthfeat",
"dpcryptfeat"
],
"icc": [
"iccnick",
"iccdesc",
"iccmech",
"iccprot",
"iccprocmanager",
"iccbufsizeprot",
"iccformatprot"
]
}