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transformations:iteratetable [2016/09/21 02:56]
dmitry created
transformations:iteratetable [2020/02/06 09:56] (current)
dmitry
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 ===== Iterate table ===== ===== Iterate table =====
  
-This transformation is similar to [[transformations:iterate|Iterate]] transformation, but allows passing a table to an iterated project. The iterated project should use [[transformations:input|Input]] transformation in order to receive the table.+This action is similar to [[transformations:iterate|Iterate]] action, but allows passing a table to an iterated project. The "Iterate table" action has two inputs:
  
-This transformation allows significantly increasing performance in cases when iterated project had to read the same file in each iteration (in previous versions of EasyMorph)Now such file can be read once and then passed to an iterated project in memory.+   - The output of the previous action 
 +   - The external table it references 
 + 
 +The action works as follows: it takes a dataset from another table (2), passes it to the called module or project, and runs it as many times as there are rows in its input dataset (1). 
 + 
 +The iterated project should use [[transformations:input|Input]] transformation in order to receive the table. 
 + 
 +This action allows significantly increasing performance in cases when iterated project had to operate with the same dataset in each iteration. 
 + 
 +=== Examples === 
 + 
 +  * [[https://community.easymorph.com/t/create-a-new-table-with-columns-based-on-row-values/1625/3|Community: Create a new table with columns based on row values]] 
 +  * [[https://community.easymorph.com/t/crosstable-multiple-column-groups/1249|Community: Crosstable multiple column groups]] 
 + 
 +=== See also === 
 +  * [[transformations:iterate|Iterate]] 
 +  * [[transformations:input|Input]]
transformations/iteratetable.1474426562.txt.gz · Last modified: 2016/09/21 02:56 by dmitry