# How to rewrite an SQL Complex query

**URL:** <https://discuss.elastic.co/t/how-to-rewrite-an-sql-complex-query/109360>\
**Category:** Elasticsearch\
**Created:** [November 28, 2017, 10:21am UTC](https://discuss.elastic.co/t/how-to-rewrite-an-sql-complex-query/109360 "2017-11-28T10:21:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bilpor](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bilpor/32/24043_2.png) [@bilpor](https://discuss.elastic.co/u/bilpor)\
**Post date:** [November 28, 2017, 10:21am UTC](https://discuss.elastic.co/t/how-to-rewrite-an-sql-complex-query/109360/1 "2017-11-28T10:21:30Z")

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HI All,

I have created an index via logstash using the jdbc driver for sql and the index has been made using the following query:

```
SELECT iDisID, iTopID, iPID, tblDiscussions.iUID, sSubject, dCreated, iViews, sQuestion, sTimestamp, bLocked, bArchived, 
			 tblProfiles.sUserHRID, tblProfiles.sUserFname, tblProfiles.sUserSname, tblLUTopics.sTopName 
                  FROM [KMNEW].[dbo].[tblDiscussions] Inner join [KMNEW].[dbo].[tblProfiles] on tblDiscussions.iUID = tblProfiles.iUID
		  INNER JOIN [KMNEW].[dbo].[tblLUTopics] ON tblDiscussions.iTopID = tblLUTopics.iTID
		  WHERE tblDiscussions.bActive=1 AND tblLUTopics.bActive=1

```

I now need to create a query against this index that will mimick the statement below. (I think this is probably too complex for elastic, but if anyone has a suggestion on how to approach this query would be good).

```
select idisid, ipid, itopid, tblDiscussions.iuid, sSubject, sQuestion, dCreated, tblLUTopics.sTopName, tblProfiles.sUserFname, tblProfiles.sUserSname, tblProfiles.sUserHRID from [dbo].[tblDiscussions] 
	INNER JOIN tblLUTopics ON tblDiscussions.iTopID = tblLUTopics.iTID
	INNER JOIN [dbo].[tblProfiles] on tblProfiles.iUID = tblDiscussions.iUID
	where ipid = 0 
	union all
	select dd.idisid, dd.ipid, dd.itopid, dd.iUID, dd.sSubject, dd.sQuestion, dd.dCreated, tblLUTopics.sTopName, tblProfiles.sUserFname, tblProfiles.sUserSname, tblProfiles.sUserHRID 
	from tblDiscussions as dd
	INNER JOIN tblLUTopics ON dd.iTopID = tblLUTopics.iTID
	INNER JOIN [dbo].[tblProfiles] on tblProfiles.iUID = dd.iUID
	cross apply (select distinct(ipid) from tblDiscussions where ipid != 0) as cr
	cross apply (select min(idisid) as idisid from tblDiscussions group by ipid) as mm
	where (dd.ipid = cr.ipid and dd.iDisID = mm.idisid )
	group by dd.iDisID, dd.ipid, dd.itopid, dd.iUID, dd.sSubject, dd.sQuestion, dd.dCreated, tblLUTopics.sTopName, tblProfiles.sUserFname, tblProfiles.sUserSname, tblProfiles.sUserHRID
>
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 26, 2017, 10:21am UTC](https://discuss.elastic.co/t/how-to-rewrite-an-sql-complex-query/109360/2 "2017-12-26T10:21:45Z")

</div>

Closed on December 26, 2017, 10:21am UTC

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