奇怪的查询行为oracle 11g

Question

我的查询为：

SELECT ps_node_id,name 
FROM cz_ps_nodes WHERE cz_ps_nodes.ps_node_type=261
START WITH NAME = 'Bundle Rule Repository',cz_ps_nodes.devl_project_id = P_devl_project_id AND cz_ps_nodes.deleted_flag = 0
CONNECT BY PRIOR ps_node_id = parent_id.

此查询有效。 但是，如果我只是从选择部分删除名称，如：

SELECT ps_node_id
FROM cz_ps_nodes WHERE cz_ps_nodes.ps_node_type = 261                       
START WITH NAME = 'Bundle Rule Repository',cz_ps_nodes.devl_project_id = P_devl_project_id AND cz_ps_nodes.deleted_flag = 0                                         
CONNECT BY PRIOR ps_node_id = parent_id.

查询只是挂起但正在使用oracle 10 g，当我们升级到oracle 11g时问题就出现了。 谁能解释为什么？

Answer 1

使用以下方法解决问题：alter session set optimizer_features_enable = '10 .2.0.4' -