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From Maryann Xue <maryann....@gmail.com>
Subject Re: Non-equi joins
Date Wed, 25 Mar 2015 17:59:07 GMT
Yes, 4.3 only.

On Wed, Mar 25, 2015 at 1:25 PM, Jaime Solano <jdjsolano@gmail.com> wrote:

> Thanks for your response, Maryann!
>
> Again, this suggestion is for 4.3 only, right?
> On Mar 25, 2015 12:34 PM, "Maryann Xue" <maryann.xue@gmail.com> wrote:
>
>> Actually we do in 4.3, but apparently not in an efficient way. If no equi
>> conditions are specified, Phoenix simply does cross join and applies a post
>> filter to the cross joined results. And we do not support non-equi
>> conditions in ON clause, so non-equi outer join is currently impossible.
>> But if you are doing inner joins, you can adjust your query as:
>>
>> SELECT * FROM T1, T2 WHERE T1.COL1 >= T2.COL2 AND T1.COL1 <= T2.COL3;
>>
>>
>> On Wed, Mar 25, 2015 at 9:29 AM, Jaime Solano <jdjsolano@gmail.com>
>> wrote:
>>
>>> Hi guys,
>>> I'm trying to figure out a way to join two tables with non-equi
>>> conditions. Basically, something like:
>>> SELECT * FROM T1 LEFT JOIN T2 ON T1.COL1 >= T2.COL2 AND T1.COL1 <=
>>> T2.COL3;
>>> I'm using Phoenix 4.2.0, which doesn't support non-equi joins.
>>> Is this feature supported in version 4.3? If not, is there a workaround
>>> to make it work in 4.2.0?
>>> Thanks in advance!
>>> -Jaime
>>>
>>
>>

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