@lohaninarayan
I checked your issue more, and you are encountering multiple issues here.
First, the data table must be configured.
There are some steps to so this :
1. After adding the Data Table control to the Canvas App, select the Data Table Control, and then on the very right side panel, under Properties tab, under "Fields", click on the purple text that says "Edit Fields"
2. On the flyout that shows up to the left of that panel, click "Add Field" that has the big plus symbol next to it.
3. In the small flyout that appears, check boxes for all the fields you want
4. and finally click the Add button.
You then get the result like this below
( but you won't get that result like below with the Collection you have as-is, read on to see why )
However, the Table must not have any sub-tables for this to see those fields
Even if you do the above, you'll encounter an issue with your Data Table.
You must flatten your table as much as possible first, otherwise, you won't see any fields that are inside nested Tables or nested Collections!
For those items which have sub-tables, even if you check the box for it, like Incident or Role for example, they'll show up as [object Object] and not show anything else. They'll look like this, for example:
The above would be what happens when trying it on coll_02 in my example app - which I think is the closest to where your data is in level of transformation, since coll02 in my example ends up looking something like this:
There are two nested tables in my coll02, Incident and Role, kind of like your Incident and Role, each of which contain more than one record.
I have a custom example where I start with a very multi-dimensional table with nested tables in it, and that table itself is nested - and then I flatten it with multiple steps to turn it into a single table. The first step turns it into coll02 like above, because initially, the whole table is nested in just two readable records, both of which only show this in a Data Table control:
Here's the full example of how to turn that above, into this instead:
(I have a sample app later below in this post you can import, but here are the steps in case)
First, make a blank app with two blank screens, Screen1, and Screen2. Leave Screen2 blank.
Screen1 Onvisible:
ClearCollect(coll_original,[{id:0,Incident:[{logname:"123name",logid:"123"},{logname:"456name",logid:"456"}],Role:[{rolename:"123name",roleid:"123"},{rolename:"456name",roleid:"456"}]},{id:1,Incident:[{logname:"b123name",logid:"b123"},{logname:"b456name",logid:"b456"}],Role:[{rolename:"b123name",roleid:"b123"},{rolename:"b456name",roleid:"b456"}]}]);
ClearCollect(coll02, ForAll(Distinct(Ungroup(coll_original.Value,"Value"),ThisRecord.Value),Result));
ClearCollect(coll03, Ungroup(coll02,"Incident"));
ClearCollect(coll04, DropColumns(AddColumns(coll03,"logid",ThisRecord.Value.logid,"logname",ThisRecord.Value.logname),"Value"));
ClearCollect(coll05, Ungroup(coll04,"Role"));
ClearCollect(coll06, DropColumns(AddColumns(coll05,"roleid",ThisRecord.Value.roleid,"rolename",ThisRecord.Value.rolename),"Value"));
Toggle between Screen2 and Screen1 once.
Add your Data Table and select coll06 when prompted.
To experiment with Data Table fields and what shows on each stage, like for example to change it to coll_original, use the right side, and click Data Source, change it through that dropdown, and when prompted to replace columns, make sure to do so. You better don't change it by the formula bar Items directly.
Notice for coll_original, which is the original source collection, it's impossible to see any data at all:
Whereas with coll06, you see all the data. With the other collections, you have the ability to see incrementally more or less data depending where in the transformation it is.
Working Sample msapp
I have attached a working (and revised) sample msapp file app31.msapp if you would like to import a full, working example yourself for your convenience.
To use the sample msapp attached, follow these steps:
1) Download the msapp file attached to this post (it's at the bottom of this post), to Desktop or a folder of your choice, by clicking on it from this post.
2) Create a new, blank Power App Canvas App
3) Go to File -> Open -> Browse
4 ) Navigate to location of .msapp file from Step 1, select it, and press the "Open" button.
5 ) The working example msapp file should load
6 ) Toggle between Screen2 and Screen1 once to initialize all the collections.
7 ) You can also check File -> Collections to see the Collections step by step as they are transformed.
8 ) You can try the full working example and also check the working formulas and setup as well in the app.
.
