Solr 加入“未加入"子选择 [英] Solr join "not in" subselect

问题描述

在 Solr 加入文档 Solr Join 中他们说:

In the Solr join documentation Solr Join they say that:

/solr/collection1/select ? fl=xxx,yyy & q={!join from=inner_id to=outer_id}zzz:vvv

相当于:

SELECT xxx, yyy
FROM collection1
WHERE outer_id IN (SELECT inner_id FROM collection1 where zzz = "vvv")

我如何在 Solr 中编写代码(请参阅 NOT):

How do I write in Solr (see the NOT):

SELECT xxx, yyy
FROM collection1
WHERE outer_id NOT IN (SELECT inner_id FROM collection1 where zzz = "vvv")

让我们考虑以下示例:
人物记录:

Lets consider the following example:
People Records:

1. name='a', id=1, teacherId=4
2. name='b', id=2, teacherId=4
3. name='c', id=3, teacherId=1
4. name='d', id=4, isTeacher='true'

现在我想选择他们的teacherId指向非教师ID的所有学生(记录#3).
在 SQL 中:

Now I want to select all students which their teacherId points to non teacher ID (record #3).
In SQL:

select * from people where teacherId not in (select id where isTeacher='true').

推荐答案

请尝试将-"放在整个连接过滤器之外，如下所示:

Please try put "-" outside of the whole join filter, like below:

/solr/collection1/select ?fl=xxx,yyy &q=-({!join from=inner_id to=outer_id}zzz:vvv)

/solr/collection1/select ? fl=xxx,yyy & q=-({!join from=inner_id to=outer_id}zzz:vvv)

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