数据库,求教怎么合并或拆散关联数据

[TomVista]

表 Dosage

[
  {
    "ID": "EE043027B5AB4CFAA34F829F4450D49D",
    "Piece": "D1EBDB242DCA40BA80856BC32E984C1C",
    "StorID": "2",
    "Storage": "",
    "MaterID": "",
    "Material": "",
    "Rate": "0",
    "RecAmnt": "1217",
    "PlanAmnt": "1217",
    "MeasAmnt": "",
    "FactAmnt": "1193",
    "Fall": "18",
    "FinTim": "43161.6767211806",
    "Data": "0",
    "Flag": "1",
    "Stamp": "43161.6808589236",
    "CRC": "957066660",
    "Mask": "FA39416CCB0B705BD408735DCD17705DC30A6F5B66",
    "ManuAmnt": "0",
    "Temper": "0"
  }
]

表 Piece

[
  {
    "ID": "D1EBDB242DCA40BA80856BC32E984C1C",
    ...
  }
]

Piece 一对多 Dosage,

如何把多条 Dosage 合并到对应的 Piece. 或者把一条数据拆分成一对多关系分表存储.

可不可以批合并 或拆分?