Room error: is there no alternative at the entrance?

I'm trying to update a table using @Query annotation of room library, below is my code (in Dao frontend):

@Query("UPDATE table_name SET table_name.col1 = :val1 WHERE table_name.col2 = :val2")
void updateValue(long val1, long val2);

      

        
        
        
      

    

End the error line as shown below:

Error:(11, 10) error: no viable alternative at input 'UPDATE table_name SET table_name.'

      

        
        
        
      

    

Here is the entity class:

@Entity(tableName = "table_name")
public class SampleTable {

    @PrimaryKey
    @ColumnInfo(name = "_id")
    private Long Id;

    @ColumnInfo(name = "col1")
    private Long column1;

    @ColumnInfo(name = "col2")
    private Long column2;

    public Long getId() {
        return Id;
    }

    public void setId(Long id) {
        Id = id;
    }

    public Long getColumn1() {
        return column1;
    }

    public void setColumn1(Long column1) {
        this.column1 = column1;
    }

    public Long getColumn2() {
        return column2;
    }

    public void setColumn2(Long column2) {
        this.column2 = column2;
    }
}

      

        
        
        
      

    

What's wrong with my code?