private static List<String> getSkewedValueFromASTNode(ASTNode node) {
    List<String> colList = new ArrayList<String>();
    int numCh = node.getChildCount();
    for (int i = 0; i < numCh; i++) {
      ASTNode child = (ASTNode) node.getChild(i);
      colList.add(BaseSemanticAnalyzer.stripQuotes(child.getText()).toLowerCase());
    }
    return colList;
  }
Gets the skewed column list from the statement.
  create table xyz list bucketed (col1) with skew (1,2,5)
  AST Node is for (1,2,5)
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/storage/skewed/SkewedTableUtils.java