fix: improve bun.NullTime to accept string

internal/dbtest/pg_test.go

@@ -5,6 +5,7 @@ import (
 	"net"
 	"reflect"
 	"testing"
+	"time"
 
 	"github.com/google/uuid"
 	"github.com/stretchr/testify/require"
@@ -315,4 +316,19 @@ func TestPGDate(t *testing.T) {
 	err := db.NewSelect().ColumnExpr("'2021-09-15'::DATE").Scan(ctx, &str)
 	require.NoError(t, err)
 	require.Equal(t, "2021-09-15", str)
+
+	str = ""
+	err = db.NewSelect().ColumnExpr("CURRENT_TIMESTAMP::date").Scan(ctx, &str)
+	require.NoError(t, err)
+	require.NotZero(t, str)
+
+	var tm time.Time
+	err = db.NewSelect().ColumnExpr("CURRENT_TIMESTAMP::date").Scan(ctx, &tm)
+	require.NoError(t, err)
+	require.NotZero(t, tm)
+
+	var nullTime bun.NullTime
+	err = db.NewSelect().ColumnExpr("CURRENT_TIMESTAMP::date").Scan(ctx, &nullTime)
+	require.NoError(t, err)
+	require.False(t, nullTime.IsZero())
 }

schema/sqltype.go

@@ -109,17 +109,23 @@ func (tm *NullTime) Scan(src interface{}) error {
 	}
 
 	switch src := src.(type) {
+	case time.Time:
+		tm.Time = src
+		return nil
+	case string:
+		newtm, err := internal.ParseTime(src)
+		if err != nil {
+			return err
+		}
+		tm.Time = newtm
+		return nil
 	case []byte:
 		newtm, err := internal.ParseTime(internal.String(src))
 		if err != nil {
 			return err
 		}
-
 		tm.Time = newtm
 		return nil
-	case time.Time:
-		tm.Time = src
-		return nil
 	default:
 		return fmt.Errorf("bun: can't scan %#v into NullTime", src)
 	}