model

type ColumnDiff struct {
	OldColumn *table.Column
	NewColumn *table.Column
}

type Diff struct {
	DeletedTables  []*table.Table
	AddedTables    []*table.Table
	ModifiedTables []*TableDiff
	// contains filtered or unexported fields
}

type Model struct {
	Meta   *meta.Model
	Domain *domain.Model
	Graph  *graph.Model
}

type ModifyAtom struct {
	ExcuteSQL string
	UndoSQL   string
}

type TableDiff struct {
	OldTable      *table.Table
	NewTable      *table.Table
	DeleteColumns []*table.Column
	AddColumns    []*table.Column
	ModifyColumns []ColumnDiff //删除列索引，并重建
}