Q&A BY TAG 'JOIN'
Join Views with fields that have similar data, but not identical
answered
29-12-2021 05:25:21 -0500
Hello, I'm new to the Deonodo coummunity. I'm currently working on a poc using two Exel datasources I've created and built views on top of. I am trying to join two of these views together based on a field that contains a calendar quarter. In one field ...
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1
Json array in data set - joining back to original data --- losing records when select * is used
answered
11-08-2021 06:58:14 -0400
I am seeing some odd behavior with a derived view that is the result of a field with JSON data being turned into an array and joined back to the original data set and the flattened. if I do a select * (no where clause) of the resulting join (after th...
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2
Condition based Join of 3 tables
answered
10-08-2021 13:41:59 -0400
I am having 3 tables - A, B, C. I need 4 kinds of output Case 1 : If condition 1 and 2 both not satisfied : Sel from A Case 2 : If condition 1 satisfies : Sel A. from A Inner Join B Case 3 : If condition 2 satisfies : sel A. from A Inner Join C Case ...
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2
Joins with Paginated Data
answered
29-04-2021 13:48:58 -0400
If we have a schenario where results from two paginated APIs are to be JOINED. e.g. We have 1 million customers, and an API that returns 100 at a time. And another API that reutrn All Customer Orders, again 100 at a time, with no guarantee about what p...
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1
Isolated query of a joint view
answered
16-04-2021 08:35:01 -0400
Hello, is it possible to solve the following scenario: I have two views with different sources, which I would like to join (a push-down is therefore not possible). I want to join these views and make them available for reporting. However, the reportin...
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1
Merge search parameters for derived view to other 3 underlying views
answered
30-03-2021 08:46:37 -0400
Hello, I have following tree view: View / | \ View1 View2 View 3 | | | BV BV BV | | | DS DS DS The DS is a Web Service Datasource...
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1
Dynamic Base View based on another Base view (not JOIN)
answered
04-01-2021 12:18:07 -0500
Hi, I need help with a very specific use case. I have 2 different data sources and I need to create a base view from source A filtered by some values from another base view coming from source B. This values in the second view would be a hole column, ...
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5
Join condition on delimited files
answered
26-11-2020 04:20:16 -0500
Hi Team, I want to join 2 views.First view is created from Json file and second view is created from delimited files(Text Files) I need to join both of them on basis of one coloumn. This column can be easily written by specifying view name and then ...
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1
Poor performance for jdbc and json array type join
answered
09-10-2020 08:19:14 -0400
Hi, I observered a poor performance for a join between a jdbc type view and json array. individually when queried they are running fast but when we do a join it's performance degrades. Can you suggest how to improve performance ? Also i see 347 subp...
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1
Denodo Disparat sources join without Cache.
answered
26-12-2019 14:12:56 -0500
Hi Guys, I am new to Denodo. I have installed Express edition on my laptop and running a sample task. I have two disparate data sources (Postgres and MySQL), Postgres has agents table while MySQL has Customer and Orders data. When I execute a join ...
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3