oracle 分页SQL

	private String getPageSQL(String sourceSQL, int start, int end){
		StringBuilder builder = new StringBuilder(
				"select * from (select rownum as rowno, getSQLGridDatas.* from (")
				.append(sourceSQL).append(") getSQLGridDatas where rownum <= ")
				.append(end)
				.append(") table_alias where table_alias.rowno >= ")
				.append(start);
		return builder.toString();
	}