Difference between revisions of "Dataset Splitter"
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To join the sub tables back together into a single table use the [[Merge Data]] Node. | To join the sub tables back together into a single table use the [[Merge Data]] Node. | ||
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Revision as of 10:33, 23 June 2010
Dataset Splitter
The Dataset Splitter divides the current Data Table into sub-tables based on the values which appear in a specified column. For example, consider the following Data Table:
http://www.international-presence.com/wikidocs/images/split_table_example.png
If we split the data over the "Group" column, this will divide the Table into four sub-tables, illustrated below:
http://www.international-presence.com/wikidocs/images/split_example_group_a.png
http://www.international-presence.com/wikidocs/images/split_example_group_b.png
http://www.international-presence.com/wikidocs/images/split_example_group_c.png
http://www.international-presence.com/wikidocs/images/split_example_group_d.png
What happens to these sub tables? Each one is passed to the next Task Element in a separate Execution Path so that it can be handled individually. For example it can be turned into an HTML Table, or used as the basis of subsequent queries, etc - see Iterative Execution Paths.
To join the sub tables back together into a single table use the Merge Data Node.
Data Filter | Require Columns | Append Data Column | Multiple Column Appender
Drop Column | Drop Row(s) | Calculate Column Aggregate | Dataset Splitter | Merge Data
Create Data Table | Clear Data Table | Sort Data Table | Drop Duplicate Rows | Store Data Table | Retrieve Data Table
Task Elements > Data Table Nodes > Dataset Splitter
