Example use case:
Column A is denoted as categoryFilter in row 2. In Advanced Parameters, I specify the query:
select * label A 'abc'
The filter for Column A goes away. (Not what I intended.)
Following is a common use case:
Suppose I have a table with columns A, B, C and associated headings "TagA", "TagB", "Value". TagA and TagB are specified to be categoryFilter.
In Advanced Parameters, I specify the query:
select min(A),min(B),C group by C
The filters now show up as "min TagA" and "min TagB".
To rename them, I respecify the query as:
select min(A),min(B),C group by C label A 'newnameA', B 'newnameB'
Unfortunately, that renaming now kills them as filters. :-(
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