According to SQLite Update Docs :
<!-- language: lang-java -->
@Query("UPDATE tableName SET
field1 = :value1,
field2 = :value2,
...
//some more fields to update
...
field_N= :value_N
WHERE id = :id)
int updateTour(long id,
Type value1,
Type value2,
... ,
// some more values here
... ,
Type value_N);
Example:
Entity:
@Entity(tableName = "orders")
public class Order {
@NonNull
@PrimaryKey
@ColumnInfo(name = "order_id")
private int id;
@ColumnInfo(name = "order_title")
private String title;
@ColumnInfo(name = "order_amount")
private Float amount;
@ColumnInfo(name = "order_price")
private Float price;
@ColumnInfo(name = "order_desc")
private String description;
// ... methods, getters, setters
}
Dao:
@Dao
public interface OrderDao {
@Query("SELECT * FROM orders")
List<Order> getOrderList();
@Query("SELECT * FROM orders")
LiveData<List<Order>> getOrderLiveList();
@Query("SELECT * FROM orders WHERE order_id =:orderId")
LiveData<Order> getLiveOrderById(int orderId);
/**
* Updating only price
* By order id
*/
@Query("UPDATE orders SET order_price=:price WHERE order_id = :id")
void update(Float price, int id);
/**
* Updating only amount and price
* By order id
*/
@Query("UPDATE orders SET order_amount = :amount, price = :price WHERE order_id =:id")
void update(Float amount, Float price, int id);
/**
* Updating only title and description
* By order id
*/
@Query("UPDATE orders SET order_desc = :description, order_title= :title WHERE order_id =:id")
void update(String description, String title, int id);
@Update
void update(Order order);
@Delete
void delete(Order order);
@Insert(onConflict = REPLACE)
void insert(Order order);
}