code: func getColumnName(field reflect.StructField) (fieldName string) {
  	ts := parseTagSetting(field.Tag.Get("igor"))
  	if ts["column"] != "" {
  		fieldName = ts["column"]
  	} else {
  		fieldName = handleIdentifier(field.Name)
  	}
  	return
  }
docs: // getColumnName returns the column name of the specified field of the struct
  // it's the name of the field if the field has not a `igor:column` value spcified
  // the field is a valid sql value (thus in case, the name is escaped using handleIdentifier)