Nebula 版本 v2.0.1
(root@nebula) [social_book]> go 1 to 1 STEPS from "UR4498673263107723264" over e_call BIDIRECT where $$.user.user_no!='UR4498673263107723264' yield $$.user.date_appl_submit as dateApplSubmit | yield count($-.dateApplSubmit!=null) as
cnt
+-----+
| cnt |
+-----+
| 0 |
+-----+
Got 1 rows (time spent 2793/53388 us)
Mon, 16 Aug 2021 15:55:42 CST
(root@nebula) [social_book]> fetch prop on user 'UR123test' yield user.date_appl_submit
+-------------+-----------------------+
| VertexID | user.date_appl_submit |
+-------------+-----------------------+
| "UR123test" | __NULL__ |
+-------------+-----------------------+
Got 1 rows (time spent 1231/50946 us)
Mon, 16 Aug 2021 15:59:39 CST
如上所示,我的date_appl_submit字段类型为timestamp,因为没有设置default值,请问条件查询时如何过滤段值为_NULL_的行。$$.user.date_appl_submit!=null不行,没有满足我的需求。