{{ transformations:FilterMinMaxAction.png}}
====== KEEP MIN/MAX======
Category: Transform / Filters\\

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=====Description=====
This action keeps (or removes) only rows with the biggest or smallest values in a specified column.\\

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=====Use cases=====
Use this action to generate datasets of "top N" or "bottom N" (or "top %" or "bottom %") records based on values in a specific column.

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=====Action settings=====
^Setting ^Description ^
|Column|Select the column to filter values on.|
|Keep or remove?|Select whether to keep or remove the highest/lowest values.  Options:  //Keep// or //Remove//.|
|Biggest or smallest?|Select whether to keep/remove the largest values, or the smallest.  Options:  //Biggest// or //Smallest//.|
|How many (numbers/dates)?<sup>*</sup>|Select whether to keep/remove a specific number of values (e.g. "3" for the top/bottom three values), or a\\ percentage (e.g. "10" for the top/bottom 10% of values).  Options: //Count// or //Percent//.|
|Inside groups|When checked, the min/max process will operate within groups of values in the column(s) selected (and select the column(s)).|
<sup>*</sup> Setting can be specified using a [[:parameters|parameter]].\\

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=====Remarks=====
Taking into account ties, the number of rows returned by this action may exceed the "Count" value entered.  The "Count" value refers to the number of unique values, not the number of rows.

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=====Examples=====

====Example #1====
>Obtain the products with the lowest three prices.\\

===Before (source table)===
^ Product ^ Price, USD ^
|Potato |  12.00|
|Carrot |  16.50|
|Orange |  14.95|
|Onion |  13.45|
|Cherry |  13.95|
|Garlic |   9.55|

===After (result table)===
^ Product ^ Price, USD ^
|**Potato** |  **12.00**|
|**Onion** |  **13.45**|
|**Cherry** |  **13.95**|
|**Garlic** |   **9.55**|
 
===Action parameters===
> Column: Price, USD
> Keep or remove?: Keep
> Biggest or smallest?: Smallest
> Count: 3

Although the "Count" value was "3", four rows were returned due to the duplicate value "13" in two rows.\\

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=====Community examples=====
  * [[https://community.easymorph.com/t//1332/3|String manipulation (REVERSE)]] ([[https://community.easymorph.com/uploads/short-url/67c52KIJt323kknw2Q4vOvlAJ05.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Using actions//; Action position: //5//)
  * [[https://community.easymorph.com/t//2156/1|How to process parent-child data structures]] ([[https://community.easymorph.com/uploads/short-url/zmylfn4Qr0ovzu3e5rybl0LVMNG.morph|Project]]; Module: //Module 1//; Group: //Tab 1//; Table: //Longest folder path//; Action position: //4//)

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=====See also=====
  * [[transformations:trimtable|Trim table]]