EasyMorph Help

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
{{ transformations:ExportApacheParquetAction.png}}
======EXPORT TO APACHE PARQUET======
Category: Export / File\\
 
\\ 
=====Description=====
This action exports the current dataset into an Apache Parquet (.parquet) file with metadata.
 
\\ 
=====Action settings=====
^ Setting  ^ Description  ^
|File<sup>*</sup>|Enter fully-qualified filename to save the dataset to.|
|Columns|Select whether to export //all columns// (and auto-detect formats) or //selected columns// (and select the columns' associated data types).  Choose how EasyMorph responds //if cell data type doesn't match the selected one// (Fail, or Write null (if nulls are allowed)).|
|Metadata|Add Name/Value<sup>*</sup> metadata pairs to export along with the dataset.|
|Options|Select the //Compression method// as well as how EasyMorph handles situations //if a file already exists// (Overwrite, Rename, or Halt project execution).|
<sup>*</sup> Setting can be specified using a [[:parameters|parameter]].\\

\\ 
====Column data type settings====
^Setting ^Description ^
|Data type|Select the data type of values in this column. Options: //Text//, //64-bit integer//, //Float//, //Double//, //Boolean//, //UUID//, or //Timestamp//.|
|Can be null|Check this if the column can contain null values.|

\\ 
====File already exists options====
^Option ^Description ^
|Overwrite|The new file replaces the original file.|
|Rename|The original file will be renamed with "backup" and a serial number appended to the file name.  The new file will\\ possess the name specified in the //File// setting.|
|Halt project execution|The project will stop processing and this action will display a warning symbol.|

\\
=====See also=====
  *[[transformations:importapacheparquet|Import from Apache Parquet]]