package clause

type OrderByColumn struct {
	Column  Column
	Desc    bool
	Reorder bool
}

type OrderBy struct {
	Columns    []OrderByColumn
	Expression Expression
}

// Name where clause name
func (orderBy OrderBy) Name() string {
	return "ORDER BY"
}

// Build build where clause
func (orderBy OrderBy) Build(builder Builder) {
	if orderBy.Expression != nil {
		orderBy.Expression.Build(builder)
	} else {

			"INSERT INTO `users` (`created_at`,`updated_at`,`deleted_at`,`name`,`age`,`birthday`,`company_id`,`manager_id`,`active`) VALUES (?,?,?,?,?,?,?,?,?)",
			"SELECT * FROM `users` WHERE name = ? AND `users`.`deleted_at` IS NULL ORDER BY `users`.`id` LIMIT ?",
			"SELECT * FROM `users` WHERE name = ? AND `users`.`deleted_at` IS NULL ORDER BY `users`.`id` LIMIT ?",

		for idx, column := range returning.Columns {
			if idx > 0 {
				builder.WriteByte(',')
			}

			builder.WriteQuoted(column)
		}
	} else {
		builder.WriteByte('*')
	}
}

// MergeClause merge order by clauses
func (returning Returning) MergeClause(clause *Clause) {
	if v, ok := clause.Expression.(Returning); ok {
		returning.Columns = append(v.Columns, returning.Columns...)
	}

	clause.Expression = returning

	}
	if limit.Offset > 0 {
		if limit.Limit != nil && *limit.Limit >= 0 {
			builder.WriteByte(' ')
		}
		builder.WriteString("OFFSET ")
		builder.AddVar(builder, limit.Offset)
	}
}

// MergeClause merge order by clauses
func (limit Limit) MergeClause(clause *Clause) {
	clause.Name = ""

	if v, ok := clause.Expression.(Limit); ok {
		if (limit.Limit == nil || *limit.Limit == 0) && v.Limit != nil {
			limit.Limit = v.Limit

	} else if egNews.BasePost.Title != "engadget_news" {
		t.Errorf("embedded struct's value should be scanned correctly")
	}

	var egPosts []EngadgetPost
	if err := DB.Order("author_name asc").Find(&egPosts).Error; err != nil {
		t.Fatalf("no error should happen when query with embedded struct, but got %v", err)
	}
	expectAuthors := []string{"Edward", "George"}
	for i, post := range egPosts {

		t.Errorf("count with join, got error: %v, count %v", err, count4)
	}

	var count5 int64
	if err := DB.Table("users").Where("users.name = ?", user1.Name).Order("name").Count(&count5).Error; err != nil || count5 != 1 {
		t.Errorf("count with join, got error: %v, count %v", err, count)
	}

	var count6 int64

			}
		}

		tx.Statement.AddClause(clause.Select{Expression: expr})
	}

	if orderByClause, ok := db.Statement.Clauses["ORDER BY"]; ok {
		if _, ok := db.Statement.Clauses["GROUP BY"]; !ok {
			delete(tx.Statement.Clauses, "ORDER BY")
			defer func() {
				tx.Statement.Clauses["ORDER BY"] = orderByClause
			}()
		}
	}

	tx.Statement.Dest = count
	tx = tx.callbacks.Query().Execute(tx)

			t.Fatalf("ID expects : not equal 0, got %v", u1.ID)
		} else if u2.ID == 0 {
			t.Fatalf("ID expects : not equal 0, got %v", u2.ID)
		}

		var gotUsers []user
		results = DB.Where("id in (?, ?)", u1.ID, u2.ID).Order("id asc").Select("id, name").Find(&gotUsers)
		if results.Error != nil {
			t.Fatalf("errors happened on first: %v", results.Error)
		} else if results.RowsAffected != 2 {

		if err := DB.Save(want).Error; err != nil {
			t.Error(err)
		}
	}

	var gots []*Level3
	if err := DB.Preload("Level2.Level1s", func(db *gorm.DB) *gorm.DB {
		return db.Order("level1.id ASC")
	}).Find(&gots).Error; err != nil {
		t.Error(err)
	}

	if !reflect.DeepEqual(gots, wants) {
		t.Errorf("got %s; want %s", toJSONString(gots), toJSONString(wants))
	}
}

			t.Fatalf("Should have index on %s", "CompanyI.")
		}

		if !m.HasIndex(&DynamicUser{}, "DeletedAt") {
			t.Fatalf("Should have index on deleted_at.")
		}
	}
}

// check column order after migration, flaky test
// https://github.com/go-gorm/gorm/issues/4351
func TestMigrateColumnOrder(t *testing.T) {
	type UserMigrateColumn struct {
		ID uint
	}
	DB.Migrator().DropTable(&UserMigrateColumn{})