"dropoff_longitude", "dropoff_latitude", "passenger_count", "trip_distance", "fare_amount", "extra", "mta_tax", "tip_amount", "tolls_amount", "ehail_fee", "improvement_surcharge", "total_amount", "payment_type", "trip_type", "pickup", "dropoff", "cab_type", "precipitation", "snow_depth", "snowfall", "max_temp", "min_temp", "wind", "pickup_nyct2010_gid", "pickup_ctlabel", "pickup_borocode", "pickup_boroname", "pickup_ct2010", "pickup_boroct2010", "pickup_cdeligibil", "pickup_ntacode", "pickup_ntaname",...

	castDecimal   = "DECIMAL"
	castNumeric   = "NUMERIC"
	castTimestamp = "TIMESTAMP"
)

func (e *Expression) castTo(r Record, castType string, tableAlias string) (res *Value, err error) {
	v, err := e.evalNode(r, tableAlias)
	if err != nil {
		return nil, err
	}

	switch castType {
	case castInt, castInteger:
		i, err := intCast(v)
		return FromInt(i), err

	case castFloat:
		f, err := floatCast(v)

	ExprArg *Expression `parser:" @@? )! \")\""`
}

// CastFunc represents CAST sql function
type CastFunc struct {
	Expr     *Expression `parser:" \"CAST\" \"(\" @@ "`
	CastType string      `parser:" \"AS\" @(\"BOOL\" | \"INT\" | \"INTEGER\" | \"STRING\" | \"FLOAT\" | \"DECIMAL\" | \"NUMERIC\" | \"TIMESTAMP\") \")\" "`
}

// SubstringFunc represents SUBSTRING sql function
type SubstringFunc struct {