public static String getUnescapedName(ASTNode tableOrColumnNode) throws SemanticException {
    return getUnescapedName(tableOrColumnNode, null);
  }
Get dequoted name from a table/column node.
@param tableOrColumnNode the table or column node
@return for table node, db.tab or tab. for column node column.
@throws SemanticException
ql/src/java/org/apache/hadoop/hive/ql/parse/BaseSemanticAnalyzer.java