相同的查询和不同的结果sql/plus php

我使用Oracle11g，我不知道为什么我的查询在使用SQL/PLUS和PHP时返回不同的结果

<?php
$conn=oci_connect('system','3636','orcl'); 

$stid = oci_parse($conn,
"SELECT num_chb
 FROM chambre
 WHERE num_chb NOT IN
    (SELECT DISTINCT r.num_chb
     FROM chambre c,
          reservation r
     WHERE (TO_DATE('2015-12-13','YYYY-MM-DD') NOT BETWEEN r.dat_arriv AND r.dat_depart)
       AND (TO_DATE('2015-12-14','YYYY-MM-DD') NOT BETWEEN r.dat_arriv AND r.dat_depart)");


oci_execute($stid);
$tab=array();

while ($row = oci_fetch_assoc($stid)) {
   $tab[]=$row['NUM_CHB'];
}
print_r($tab);
}
?>

---

我看到了不同的查询：

PHP:

甲骨文：

SELECT num_chb
 FROM chambre
 WHERE num_chb NOT IN
    (SELECT DISTINCT r.num_chb
     FROM chambre c,
          reservation r
     WHERE (TO_DATE('2015-12-13','YYYY-MM-DD') NOT BETWEEN r.dat_arriv AND r.dat_depart)
       AND (TO_DATE('2015-12-14','YYYY-MM-DD') NOT BETWEEN r.dat_arriv AND r.dat_depart)
     AND (r.dat_arriv TO_DATE('2015-12-13','YYYY-MM-DD') NOT BETWEEN AND TO_DATE('2015-12-14','YYYY-MM-DD'))
       AND (r.dat_depart NOT BETWEEN TO_DATE('2015-12-14','YYYY-MM-DD') TO_DATE('2015-12-14','YYYY-MM-DD'))

我不能评论

再检查一遍
 我看到了不同的查询：

PHP:

甲骨文：

SELECT num_chb
 FROM chambre
 WHERE num_chb NOT IN
    (SELECT DISTINCT r.num_chb
     FROM chambre c,
          reservation r
     WHERE (TO_DATE('2015-12-13','YYYY-MM-DD') NOT BETWEEN r.dat_arriv AND r.dat_depart)
       AND (TO_DATE('2015-12-14','YYYY-MM-DD') NOT BETWEEN r.dat_arriv AND r.dat_depart)
     AND (r.dat_arriv TO_DATE('2015-12-13','YYYY-MM-DD') NOT BETWEEN AND TO_DATE('2015-12-14','YYYY-MM-DD'))
       AND (r.dat_depart NOT BETWEEN TO_DATE('2015-12-14','YYYY-MM-DD') TO_DATE('2015-12-14','YYYY-MM-DD'))

我不能评论

再检查一遍
 您确定这两个示例（PHP和SqlPlus）都连接在同一个数据库上吗？为什么要为Oracle/sql*PLUS问题指定MySQL和sql server标记？您的
系统
帐户密码是
3636
？您确定这两个示例（PHP和SqlPlus）都正确吗正在连接同一数据库？为什么要为Oracle/sql*PLUS问题指定MySQL和sql server标记？您的
系统
帐户密码是
3636
？