return sql.NullTime if it available

Author: shogo82148

driver_test.go

@@ -2758,13 +2758,13 @@ func TestRowsColumnTypes(t *testing.T) {
 	nfNULL := sql.NullFloat64{Float64: 0.0, Valid: false}
 	nf0 := sql.NullFloat64{Float64: 0.0, Valid: true}
 	nf1337 := sql.NullFloat64{Float64: 13.37, Valid: true}
-	nt0 := NullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 0, time.UTC), Valid: true}
-	nt1 := NullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 100000000, time.UTC), Valid: true}
-	nt2 := NullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 110000000, time.UTC), Valid: true}
-	nt6 := NullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 111111000, time.UTC), Valid: true}
-	nd1 := NullTime{Time: time.Date(2006, 01, 02, 0, 0, 0, 0, time.UTC), Valid: true}
-	nd2 := NullTime{Time: time.Date(2006, 03, 04, 0, 0, 0, 0, time.UTC), Valid: true}
-	ndNULL := NullTime{Time: time.Time{}, Valid: false}
+	nt0 := nullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 0, time.UTC), Valid: true}
+	nt1 := nullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 100000000, time.UTC), Valid: true}
+	nt2 := nullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 110000000, time.UTC), Valid: true}
+	nt6 := nullTime{Time: time.Date(2006, 01, 02, 15, 04, 05, 111111000, time.UTC), Valid: true}
+	nd1 := nullTime{Time: time.Date(2006, 01, 02, 0, 0, 0, 0, time.UTC), Valid: true}
+	nd2 := nullTime{Time: time.Date(2006, 03, 04, 0, 0, 0, 0, time.UTC), Valid: true}
+	ndNULL := nullTime{Time: time.Time{}, Valid: false}
 	rbNULL := sql.RawBytes(nil)
 	rb0 := sql.RawBytes("0")
 	rb42 := sql.RawBytes("42")

fields.go

@@ -106,7 +106,7 @@ var (
 	scanTypeInt64     = reflect.TypeOf(int64(0))
 	scanTypeNullFloat = reflect.TypeOf(sql.NullFloat64{})
 	scanTypeNullInt   = reflect.TypeOf(sql.NullInt64{})
-	scanTypeNullTime  = reflect.TypeOf(NullTime{})
+	scanTypeNullTime  = reflect.TypeOf(nullTime{})
 	scanTypeUint8     = reflect.TypeOf(uint8(0))
 	scanTypeUint16    = reflect.TypeOf(uint16(0))
 	scanTypeUint32    = reflect.TypeOf(uint32(0))

nulltime_go113.go

@@ -29,3 +29,8 @@ import (
 //
 // This NullTime implementation is not driver-specific
 type NullTime sql.NullTime
+
+// for internal use.
+// the mysql package uses sql.NullTime if it is available.
+// if not, the package uses mysql.NullTime.
+type nullTime = sql.NullTime // sql.NullTime is available

nulltime_legacy.go

@@ -32,3 +32,8 @@ type NullTime struct {
 	Time  time.Time
 	Valid bool // Valid is true if Time is not NULL
 }
+
+// for internal use.
+// the mysql package uses sql.NullTime if it is available.
+// if not, the package uses mysql.NullTime.
+type nullTime = NullTime // sql.NullTime is not available