columns

type Column struct {
	//Field column name
	Field string
	//ColumnType golang type mapped to column data
	ColumnType string
	//AutoValue  if value is auto created
	AutoValue bool
	//PrimayKey if column is primay key
	PrimayKey bool
	//NotNull if column is not null column
	NotNull bool
}

type Loader interface {
	// Columns return loaded columns
	Columns() ([]*Column, error)
	// Load load columns with given database and table name
	Load(conn db.Database, table string) error
}