Github user Peilin-Yang commented on the issue:
https://github.com/apache/zeppelin/pull/1371
@corneadoug The ideal case is to fetch the type from back end. But that is
pretty hard. There are several types of interpreters (Sql, Spark, AngularJS,
Shell etc..) in the back end and create a unified interface for all of them
needs a ton of work.
A simple example is: if user submits a SQL query and in that query the user
applies DATE function to a string field to make that column as type date then
basically I do not think we can correctly get the type of the column.
To me, (again) the data type in front end table is just a utility for the
user sorts/formats the data on-the-fly. Does this make more sense?
In the latest commit I added the date cell detection. Also, I make the
detection at the time when data was loaded to the table and this would save
some time (each cell will be processed and loaded anyway, see function
$scope.loadTableData). I tried to follow the code convention to make the change
as API but the current code seems do not like doing like that so I keep my
changes with other parts of code that deals with table display.
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