Quicksight questions

Question

Hello, 
I a few questions from a customer about quicksight:
Can it calculate days between certain dates? 
Can I do queries like in SQL? 
Can it compare between different analyses? E.g if I analyse a file one day and days later I analyse another file, can I compare those?

Accepted Answer

1) Can QS calculate days between certain dates?
Yes, the [dateDiff][1] buit-in function does exactly that. See [Working with calculated fields][2] to get more details.

2) Can I do queries like in SQL?
Yes, when you create a data source in QS, you can specify your own custom SQL queries. See [Adding a SQL Query][3]

3) Can it compare between different analyses? E.g if I analyse a file one day and days later I analyse another file, can I compare those?
You can do different things here. Couple of possibilities that come to may mind are to have a data source that has a field that identifies when data was loaded/extracted, say loaddate. Then create a visualization that uses loaddate as a dimension. You may also create a data source based on a union query that brings data from two or more days.

Hope that helps.

[1]: http://docs.aws.amazon.com/quicksight/latest/user/dateDiff-function.html
  [2]: http://docs.aws.amazon.com/quicksight/latest/user/working-with-calculated-fields.html
  [3]: http://docs.aws.amazon.com/quicksight/latest/user/adding-a-SQL-query.html

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