Fix Scan with soft delete, close #3712

callbacks/query.go

@@ -13,15 +13,7 @@ import (
 
 func Query(db *gorm.DB) {
 	if db.Error == nil {
-		if db.Statement.Schema != nil && !db.Statement.Unscoped {
-			for _, c := range db.Statement.Schema.QueryClauses {
-				db.Statement.AddClause(c)
-			}
-		}
-
-		if db.Statement.SQL.String() == "" {
 		BuildQuerySQL(db)
-		}
 
 		if !db.DryRun && db.Error == nil {
 			rows, err := db.Statement.ConnPool.QueryContext(db.Statement.Context, db.Statement.SQL.String(), db.Statement.Vars...)
@@ -37,6 +29,13 @@ func Query(db *gorm.DB) {
 }
 
 func BuildQuerySQL(db *gorm.DB) {
+	if db.Statement.Schema != nil && !db.Statement.Unscoped {
+		for _, c := range db.Statement.Schema.QueryClauses {
+			db.Statement.AddClause(c)
+		}
+	}
+
+	if db.Statement.SQL.String() == "" {
 		db.Statement.SQL.Grow(100)
 		clauseSelect := clause.Select{Distinct: db.Statement.Distinct}
 
@@ -163,6 +162,7 @@ func BuildQuerySQL(db *gorm.DB) {
 
 		db.Statement.Build("SELECT", "FROM", "WHERE", "GROUP BY", "ORDER BY", "LIMIT", "FOR")
 	}
+}
 
 func Preload(db *gorm.DB) {
 	if db.Error == nil && len(db.Statement.Preloads) > 0 {

callbacks/row.go

@@ -6,9 +6,7 @@ import (
 
 func RowQuery(db *gorm.DB) {
 	if db.Error == nil {
-		if db.Statement.SQL.String() == "" {
 		BuildQuerySQL(db)
-		}
 
 		if !db.DryRun {
 			if isRows, ok := db.InstanceGet("rows"); ok && isRows.(bool) {

tests/soft_delete_test.go

@@ -14,10 +14,16 @@ func TestSoftDelete(t *testing.T) {
 	DB.Save(&user)
 
 	var count int64
+	var age uint
+
 	if DB.Model(&User{}).Where("name = ?", user.Name).Count(&count).Error != nil || count != 1 {
 		t.Errorf("Count soft deleted record, expects: %v, got: %v", 1, count)
 	}
 
+	if DB.Model(&User{}).Select("age").Where("name = ?", user.Name).Scan(&age).Error != nil || age != user.Age {
+		t.Errorf("Age soft deleted record, expects: %v, got: %v", 0, age)
+	}
+
 	if err := DB.Delete(&user).Error; err != nil {
 		t.Fatalf("No error should happen when soft delete user, but got %v", err)
 	}
@@ -26,18 +32,30 @@ func TestSoftDelete(t *testing.T) {
 		t.Errorf("Can't find a soft deleted record")
 	}
 
+	count = 0
 	if DB.Model(&User{}).Where("name = ?", user.Name).Count(&count).Error != nil || count != 0 {
 		t.Errorf("Count soft deleted record, expects: %v, got: %v", 0, count)
 	}
 
+	age = 0
+	if DB.Model(&User{}).Select("age").Where("name = ?", user.Name).Scan(&age).Error != nil || age != 0 {
+		t.Errorf("Age soft deleted record, expects: %v, got: %v", 0, age)
+	}
+
 	if err := DB.Unscoped().First(&User{}, "name = ?", user.Name).Error; err != nil {
 		t.Errorf("Should find soft deleted record with Unscoped, but got err %s", err)
 	}
 
+	count = 0
 	if DB.Unscoped().Model(&User{}).Where("name = ?", user.Name).Count(&count).Error != nil || count != 1 {
 		t.Errorf("Count soft deleted record, expects: %v, count: %v", 1, count)
 	}
 
+	age = 0
+	if DB.Unscoped().Model(&User{}).Select("age").Where("name = ?", user.Name).Scan(&age).Error != nil || age != user.Age {
+		t.Errorf("Age soft deleted record, expects: %v, got: %v", 0, age)
+	}
+
 	DB.Unscoped().Delete(&user)
 	if err := DB.Unscoped().First(&User{}, "name = ?", user.Name).Error; !errors.Is(err, gorm.ErrRecordNotFound) {
 		t.Errorf("Can't find permanently deleted record")