package influxql func castToFloat(v interface{}) float64 { switch v := v.(type) { case float64: return v case int64: return float64(v) default: return float64(0) } } func castToInteger(v interface{}) int64 { switch v := v.(type) { case float64: return int64(v) case int64: return v default: return int64(0) } } func castToString(v interface{}) string { switch v := v.(type) { case string: return v default: return "" } } func castToBoolean(v interface{}) bool { switch v := v.(type) { case bool: return v default: return false } }