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{{ transformations:RemoveEmptyColumnsAction.png}}
====== REMOVE EMPTY COLUMNS ======
Category: Transform / Advanced\\

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=====Description=====
This action removes columns with little or no meaningful information. It can remove columns where:  all values are empty, all values are empty or whitespace, or, all values are the same.

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=====Use cases=====
  *The action can be helpful, for instance, after importing spreadsheets with sparsely located tables, or where table position changes from a file to file
  *It can also be used to remove columns that only contain null replacement values, such as "NULL".\\

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=====Action settings=====
^Setting^Description^
|All values are empty values|Removes columns that only contain empty values (nulls)|
|All values are empty or whitespace|Removes columns that contain either empty or whitespace values (e.g. values with only spaces, line breaks, or tabs but no visible characters).|
|All values are the same|Removes columns where all values are the same (e.g. when a column contains only text value "N/A" in all rows).|

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=====Remarks=====
If the dataset has columns but no data (i.e. no rows), the action does nothing.

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=====Examples=====

====Example #1====
>Remove empty columns.

===Before (source dataset)===
^ Column 1  ^ Product name  ^ Column 2  ^ Qty  ^ Column 3  ^ Price  ^
| | Big thing     | |    1| |  1000|
| | Medium thing  | |   10| |   100|
| | Small thing   | |  100| |    10|

===After (result table)===
^ Product name ^ Qty ^ Price ^
| **Big thing**     |    **1**|  **1000**|
| **Medium thing**  |   **10**|   **100**|
| **Small thing**   |  **100**|    **10**|

===Action parameters===
>Remove columns where: All values are empty values

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=====Community examples=====
  * [[https://community.easymorph.com/t//2053/9|Converting Text to HTML]] ([[https://community.easymorph.com/uploads/short-url/3acTPpAroyvp3DsTPNTOZQIqaHO.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Table 1//; Action position: //3//)
  * [[https://community.easymorph.com/t//2711/2|My first experiment API + conditional workflow + iteration]] ([[https://community.easymorph.com/uploads/short-url/jG4qopOtRfSxDo0UFJkNbBaKvac.morph|Project]]; Module: //Process Network ID//; Group: //Acquisition data via API//; Table: //Data from API//; Action position: //2//)
  * [[https://community.easymorph.com/t//2711/2|My first experiment API + conditional workflow + iteration]] ([[https://community.easymorph.com/uploads/short-url/jG4qopOtRfSxDo0UFJkNbBaKvac.morph|Project]]; Module: //Process Network ID//; Group: //Result//; Table: //Result//;\\ Action position: //3//)

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=====See also=====
  * [[transformations:removeemptyrows|Remove empty rows]]