Method equalsDeep

core/src/main/java/org/apache/calcite/sql/SqlNode.java:302–302

Returns whether this node is structurally equivalent to another node. Some examples: 1 + 2 is structurally equivalent to 1 + 2 1 + 2 + 3 is structurally equivalent to (1 + 2) + 3, but not to 1 + (2 + 3), because the '+' operator is left-associative

(@Nullable SqlNode node, Litmus litmus)

   * </ul>
   */
  public abstract boolean equalsDeep(@Nullable SqlNode node, Litmus litmus);

  @Deprecated // to be removed before 2.0
  public final boolean equalsDeep(@Nullable SqlNode node, boolean fail) {