{{ transformations:SearchFilterAction.png}}
====== FILTER BY SEARCH ======
Category: Transform / Filters\\

\\ 
=====Description=====
This action keeps or removes rows where values in a specified column contain a particular substring. It also supports filtering using a regular expression.\\

\\
=====Use cases=====
Create subsets of a dataset based on parts of values in a specific column (literal strings or regular expressions).

Clean a dataset by removing records that may have "junk" data in a specific column. 

\\ 
=====Action settings=====
^Setting ^Description ^
|Column|Select the column containing the values to be used for filtering.  |
|Search type|Select what part of the values should match the search string.  See the table below.|
|Search string<sup>*</sup>|Enter the string or regular expression to match in the selected column's values.  If "Regular expression" is selected\\ as the //Search type//, this setting changes to "Regular expression".|
|Regular expression|This setting appears when "Regular expression" is selected as the //Search type//.  Enter the regular expression to\\ be evaluated against all values in the selected column.  See [[https://en.wikipedia.org/wiki/Regular_expression|regular expression]] for more information.|
|Case sensitive|When checked, case will not be considered when matching the search string.|
|Filter mode|Select whether rows with matching values will be kept in the dataset, or removed. Options: //Keep only \\ matching values// or //Remove matching values//.|
<sup>*</sup> Setting can be specified using a [[:parameters|parameter]].

\\
=====Remarks=====
In cases where no values match the search string:
  * If //Keep only matching values// was selected, the result will be an empty dataset.
  * If //Remove matching rows// was selected, the result will be the full dataset (no rows removed).


\\ 
=====Examples=====
**Example:** Find all rivers that start with 'Y'.\\

**Source table:** The longest rivers in the world
^River  ^Length (km)  ^Continent  ^
| Nile  |  6650| Africa  |
| Amazon  |  6400| South America  |
| Yangtze  |  6300| Asia  |
| Mississippi  |  6275| North America  |
| Yenisei  |  5539| Asia  |
| Yellow River  |  5464| Asia  |
| Ob  |  5410| Asia  |
| Paraná  |  4880| South America  |
\\
**Action parameters:**
> Column is "River"
>  Search type is "Starts with"
> Search string is "Y"
\\ 
**Result table:**
^  River  ^  Length (km)  ^  Continent  ^
| Yangtze  |  6300| Asia  |
| Yenisei  |  5539| Asia  |
| Yellow River  |  5464| Asia  |

\\ 
====Community examples====
  * [[https://community.easymorph.com/t//1475/1|Finding all projects with particular action]] ([[https://community.easymorph.com/uploads/short-url/cM8AssOT6zQXD8JDr9adUAy2sDM.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Table 2//; Action position: //3//)
  * [[https://community.easymorph.com/t//1800/4|Download multiple files from HTTPS and copy to folder, preserving file names]] ([[https://community.easymorph.com/uploads/short-url/pQyGPi01bpxaWBHR6LdGlGMyRbH.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Table 1//; Action position: //3//)
  * [[https://community.easymorph.com/t//2051/1|How to search a text file (e.g. task log) and see result in Server Pages]] ([[https://community.easymorph.com/uploads/short-url/7ZHCVj2p6RV5j6paCUZCnho29vK.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Table 1//;\\ Action position: //2//)

\\ 
=====See also=====
  * [[transformations:selectionfilter|Filter]]
  * [[transformations:filter|Filter by condition]]
  * [[transformations:filterbytype|Filter by type]]
  * [[transformations:regexp|Regular expression]]