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--- transformations:enumerate [2021/03/21 14:26] – craigt
+++ transformations:enumerate [2021/07/19 01:44] – [Examples] craigt
@@ Line 1: / Line 1: @@
 {{ transformations:EnumerateRowsAction.png}}
 ====== ENUMERATE ROWS ======
-Category: Transform / Basic
+Category: Transform / Basic\\
+\\
 =====Description=====
-This action adds a new column with row numbers. Rows can be enumerated for either the entire table, or inside groups defined by combinations of values in particular columns. In the latter case, row numbers restart from 1 inside each group.\\
+This action adds a new column with row numbers. Rows can be enumerated for either the entire table or inside groups defined by combinations of values in particular columns. In the latter case, row numbers restart from 1 inside each group.\\
+\\
+=====Use cases=====
+  *Create unique row IDs for datasets that do not already possess a unique key field.
+  *To define an original record order to re-sort records by downstream.
 \\
@@ Line 15: / Line 21: @@
 =====Examples=====
-**Source table**
+**Source table:**
-^  Province  ^  City  ^  Amount  ^  Total Tax  ^
+^Province  ^City  ^Amount  ^Total Tax  ^
-|  ON  |  Toronto  |  1000|  125|
+|ON  |Toronto  |  1000|  125|
-|  ON  |  Ottawa  |  1000|  125|
+|ON  |Ottawa  |  1000|  125|
-|  ON  |  Brampton  |  2000|  250|
+|ON  |Brampton  |  2000|  250|
-|  QC  |  Montreal  |  2000|  270|
+|QC  |Montreal  |  2000|  270|
-|  QC  |  Quebec City  |  2000|  270|
+|QC  |Quebec City  |  2000|  270|
+\\
 After transformation (enumeration for entire table).
-^  RowNo  ^  Province  ^  City  ^  Amount  ^  Total Tax  ^
+^RowNo  ^Province  ^City  ^Amount  ^Total Tax  ^
-|  1|  ON  |  Toronto  | 	1000|  125|
+|  1|ON  |Toronto  | 	1000|  125|
-|  2|  ON  |  Ottawa  | 	1000|  125|
+|  2|ON  |Ottawa  | 	1000|  125|
-|  3|  ON  |  Brampton  |  2000|  250|
+|  3|ON  |Brampton  |  2000|  250|
-|  4|  QC  |  Montreal  |  2000|  270|
+|  4|QC  |Montreal  |  2000|  270|
-|  5|  QC  |  Quebec City  |  2000|  270|
+|  5|QC  |Quebec City  |  2000|  270|
+\\
 After transformation (enumeration for each Province).
-^  RowNo  ^  Province  ^  City  ^  Amount  ^  Total Tax  ^
+^RowNo  ^Province  ^City  ^Amount  ^Total Tax  ^
-|  1|  ON  |  Toronto  | 	1000|  125|
+|  1|ON  |Toronto  | 	1000|  125|
-|  2|  ON  |  Ottawa  | 	1000|  125|
+|  2|ON  |Ottawa  | 	1000|  125|
-|  3|  ON  |  Brampton  |  2000|  250|
+|  3|ON  |Brampton  |  2000|  250|
-|  1|  QC  |  Montreal  |  2000|  270|
+|  1|QC  |Montreal  |  2000|  270|
-|  2|  QC  |  Quebec City  |  2000|  270|
+|  2|QC  |Quebec City  |  2000|  270|
+\\
 After transformation (enumeration for each Province-Amount pairing).
-^  RowNo  ^  Province  ^  City  ^  Amount  ^  Total Tax  ^
+^RowNo  ^Province  ^City  ^Amount  ^Total Tax  ^
-|  1|  ON  |  Toronto  | 	1000|  125|
+|  1|ON  |Toronto  | 	1000|  125|
-|  2|  ON  |  Ottawa  | 	1000|  125|
+|  2|ON  |Ottawa  | 	1000|  125|
-|  1|  ON  |  Brampton  |  2000|  250|
+|  1|ON  |Brampton  |  2000|  250|
-|  1|  QC  |  Montreal  |  2000|  270|
+|  1|QC  |Montreal  |  2000|  270|
-|  2|  QC  |  Quebec City  |  2000|  270|
+|  2|QC  |Quebec City  |  2000|  270|
+\\
+====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: //4//)
+  * [[https://community.easymorph.com/t//1351/1|How to order columns by a list of columns]] ([[https://community.easymorph.com/uploads/short-url/bKeuXUgwKo1alDrA03LY5z3tPJv.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Reordered columns//; Action position: //2//)
+  * [[https://community.easymorph.com/t//1649/14|Update existing data in a database table]] ([[https://community.easymorph.com/uploads/short-url/hauw3ZALjf9UqXAOP8prtLUNbxH.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //Sample data//; Action position: //4//)
+  * [[https://community.easymorph.com/t//1849/4|Iterate through a set of column]] ([[https://community.easymorph.com/uploads/short-url/5icrGfTGgzbmG2l5AuSiqb43QvR.morph|Project]]; Module: //Main//; Group: //Tab 1//; Table: //in.csv//; Action position: //2//)
+  * [[https://community.easymorph.com/t//2454/4|.txt to .csv - Multiple Line & Character Length HELP!]] ([[https://community.easymorph.com/uploads/short-url/m3PqCDwhBrNEG2xW23QqEvl8RbX.morph|Project]]; Module: //Main//; Group: //Group 1//; Table: //SAMPLE.txt//; Action position: //4//)
 \\
 =====See also=====
   *[[transformations:enumerategroups|Enumerate groups]]
+  *[[transformations:sequence|Sequence]]