public void addWindowingExprToClause(String clause, ASTNode windowingExprNode) {
    Map<String, ASTNode> windowingExprs = destToWindowingExprs.get(clause);
    if ( windowingExprs == null ) {
      windowingExprs = new LinkedHashMap<String, ASTNode>();
      destToWindowingExprs.put(clause, windowingExprs);
    }
    windowingExprs.put(windowingExprNode.toStringTree(), windowingExprNode);
  }
Check if a table is in the list to be inserted into
See also {@link #getInsertOverwriteTables()}
@param fullTableName table name in dbname.tablename format
@return
ql/src/java/org/apache/hadoop/hive/ql/parse/QBParseInfo.java