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如何实现多DataSet的join连接

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Tue May 19, 2020 6:57 am Change Time Zone

请教一下,超过2张以上的DataSet,如何实现join连接?
hellowangzhi
 
Posts: 17
Joined: Wed Jul 04, 2018 1:29 am

Tue May 19, 2020 5:52 pm Change Time Zone

hellowangzhi,
I would like to ask, how to achieve join connection for more than 2 DataSets?
If all the datasets have exactly the same structure, then you can use the "set of datasets" form of JOIN (the second form here: https://hpccsystems.com/training/documentation/ecl-language-reference/html/JOIN.html).

Otherwise, you'll just need to do multiple JOINs.

HTH,

Richard
rtaylor
Community Advisory Board Member
Community Advisory Board Member
 
Posts: 1535
Joined: Wed Oct 26, 2011 7:40 pm

Wed May 20, 2020 1:03 am Change Time Zone

Thank Richard!
I will try do it.
hellowangzhi
 
Posts: 17
Joined: Wed Jul 04, 2018 1:29 am


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