/** Generates the scalar column AST nodes for a given array of SQL columns */
 public static void generateScalarColumns(HqlSqlWalkerNode node, String sqlColumns[], int i) {
   if (sqlColumns.length == 1) {
     generateSingleScalarColumn(node, i);
   } else {
     ASTFactory factory = node.getASTFactory();
     AST n = node;
     n.setText(sqlColumns[0]); // Use the DOT node to emit the first column name.
     // Create the column names, folled by the column aliases.
     for (int j = 0; j < sqlColumns.length; j++) {
       if (j > 0) {
         n = ASTUtil.createSibling(factory, SqlTokenTypes.SQL_TOKEN, sqlColumns[j], n);
       }
       n =
           ASTUtil.createSibling(
               factory, SqlTokenTypes.SELECT_COLUMNS, " as " + NameGenerator.scalarName(i, j), n);
     }
   }
 }
 static void generateSingleScalarColumn(HqlSqlWalkerNode node, int i) {
   ASTFactory factory = node.getASTFactory();
   ASTUtil.createSibling(
       factory, SqlTokenTypes.SELECT_COLUMNS, " as " + NameGenerator.scalarName(i, 0), node);
 }