*
   * @since 20.0
   */
  public static final class ScaleAndIndex {

    private final int scale;
    private final int index;

    private ScaleAndIndex(int scale, int index) {
      checkIndex(index, scale);
      this.scale = scale;
      this.index = index;
    }

    /**
     * Computes the quantile value of the given dataset.
     *

   * size {@code size}. A position index may range from zero to {@code size}, inclusive.
   *
   * <p><b>Java 9 users:</b> consider using {@link java.util.Objects#checkIndex(index, size)}
   * instead. However, note that {@code checkIndex()} throws {@code IndexOutOfBoundsException} when
   * {@code size} is negative, while this method throws {@code IllegalArgumentException}.
   *

   * size {@code size}. A position index may range from zero to {@code size}, inclusive.
   *
   * <p><b>Java 9 users:</b> consider using {@link java.util.Objects#checkIndex(index, size)}
   * instead. However, note that {@code checkIndex()} throws {@code IndexOutOfBoundsException} when
   * {@code size} is negative, while this method throws {@code IllegalArgumentException}.
   *

		checkNotUnique = func(t *testing.T) {
			checkColumnType(t, "name", false)
			checkIndex(t, nil)
		}
		checkUnique = func(t *testing.T) {
			checkColumnType(t, "name", true)
			checkIndex(t, []gorm.Index{uniqueConstraintIndex})
		}
		checkUniqueIndex = func(t *testing.T) {
			checkColumnType(t, "name", true)
			checkIndex(t, []gorm.Index{uniqueIndex})
		}
		checkMyIndex = func(t *testing.T) {