Update alias

Author: krooswu

core/src/main/java/org/apache/calcite/rel/rel2sql/RelToSqlConverter.java

@@ -157,8 +157,7 @@ protected Result dispatch(RelNode e) {
     return dispatcher.invoke(e);
   }
 
-  @Override
-  public Result visitInput(RelNode parent, int i, boolean anon,
+  @Override public Result visitInput(RelNode parent, int i, boolean anon,
       boolean ignoreClauses, Set<Clause> expectedClauses) {
     try {
       final RelNode e = parent.getInput(i);
@@ -169,14 +168,12 @@ public Result visitInput(RelNode parent, int i, boolean anon,
     }
   }
 
-  @Override
-  protected boolean isAnon() {
+  @Override protected boolean isAnon() {
     Frame peek = stack.peek();
     return peek == null || peek.anon;
   }
 
-  @Override
-  protected Result result(SqlNode node, Collection<Clause> clauses,
+  @Override protected Result result(SqlNode node, Collection<Clause> clauses,
       @Nullable String neededAlias, @Nullable RelDataType neededType,
       Map<String, RelDataType> aliases) {
     final Frame frame = requireNonNull(stack.peek());
@@ -212,8 +209,7 @@ private static class AliasReplacementShuttle extends SqlShuttle {
       this.replaceSource = replaceSource;
     }
 
-    @Override
-    public SqlNode visit(SqlIdentifier id) {
+    @Override public SqlNode visit(SqlIdentifier id) {
       SqlNodeList source = requireNonNull(replaceSource, "replaceSource");
       SqlNode firstItem = source.get(0);
       if (firstItem instanceof SqlIdentifier && ((SqlIdentifier) firstItem).isStar()) {
@@ -328,8 +324,8 @@ public Result visit(Join e) {
           usedNames.add(rightResult.neededAlias);
         }
 
-        String safeAlias = SqlValidatorUtil.uniquify(
-            "t", usedNames, SqlValidatorUtil.EXPR_SUGGESTER);
+        String safeAlias =
+            SqlValidatorUtil.uniquify("t", usedNames, SqlValidatorUtil.EXPR_SUGGESTER);
 
         rightResult = wrapNestedJoin(rightResult, e.getRight(), safeAlias);
       }
@@ -499,7 +495,7 @@ private boolean isCommaJoin(Join join) {
     // the FROM clause.
     final List<Join> flatJoins = new ArrayList<>();
     flatJoins.add(topJoin);
-    for (int i = 0; i < flatJoins.size(); ) {
+    for (int i = 0; i < flatJoins.size();) {
       final Join j2 = flatJoins.get(i++);
       if (j2.getLeft() instanceof Join) {
         flatJoins.add((Join) j2.getLeft());
@@ -1558,8 +1554,7 @@ public List<SqlNode> createAsFullOperands(RelDataType rowType, SqlNode leftOpera
     return result;
   }
 
-  @Override
-  public void addSelect(List<SqlNode> selectList, SqlNode node,
+  @Override public void addSelect(List<SqlNode> selectList, SqlNode node,
       RelDataType rowType) {
     String name = rowType.getFieldNames().get(selectList.size());
     @Nullable String alias = SqlValidatorUtil.alias(node);