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Support Date to Number conversion to allow time difference calculations #1196

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DanielAsher opened this issue Sep 15, 2020 · 0 comments · Fixed by #1354
Closed

Support Date to Number conversion to allow time difference calculations #1196

DanielAsher opened this issue Sep 15, 2020 · 0 comments · Fixed by #1354
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C++ enhancement Feature requests or improvements

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@DanielAsher
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DanielAsher commented Sep 15, 2020 •
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Feature Request

Support Date to Number (milliseconds since epoch) conversion to allow time difference calculations.

Description of Problem:

When start and end dates (of a process) are available in a row, I want to compute the period between these dates, so I can sort the rows by the length of period.

Currently I:

  • create a New Column
  • create mdy sessionEnd - mdy sessionStart
  • receive TypeError

- `(sessionEnd - sessionStart)` expected input column types integer/float

Potential Solutions:

date_to_milliseconds computed function.

btw - this project is AWESOME!
@sc1f sc1f added C++ enhancement Feature requests or improvements labels Sep 28, 2020
@texodus texodus linked a pull request Mar 27, 2021 that will close this issue
Add Expressions Engine using ExprTk #1354
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Add Expressions Engine using ExprTk finos/perspective
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@DanielAsher @sc1f