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support more subqueries #1209

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6 tasks
xudong963 opened this issue Oct 31, 2021 · 5 comments
Closed
6 tasks

support more subqueries #1209

xudong963 opened this issue Oct 31, 2021 · 5 comments
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enhancement New feature or request

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@xudong963
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xudong963 commented Oct 31, 2021

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
support more subqueries and pass the TPCH associated with the subquery: https://github.com/apache/arrow-datafusion/issues?q=is%3Aopen+is%3Aissue+milestone%3ATPC-H

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Describe alternatives you've considered
Correlated subqueries will be implemented by nested loop initially. After the realization of basic functions, we can do some optimization, such as decorrelation and so on.

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@xudong963 xudong963 added the enhancement New feature or request label Oct 31, 2021
@xudong963
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@houqp Please assign it to me, thanks!

@Igosuki
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Igosuki commented Nov 1, 2021

Does that require to patch sqlparser or it's only on the engine side ?

@xudong963
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@Igosuki As far as know, sqlparser has supported subqueries that I listed, so it's only on the engine side.

@yahoNanJing
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Hi @xudong963, could you add #1835 to your list?

@xudong963
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Hi @xudong963, could you add #1835 to your list?

I think it has already had.
image

After #1649 is finished, the IN subquery can be easy to add.

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