Using Keep Value function in Advanced Data Transformations

The keep value stores previous not null value the field. This sounds very simple but it can help with very complex data transformation

Example:

Source			Result of transformation

More complex transformation example:

Keep Value Data Transformation Function Result

Invoice number and Invoice date can be easily extracted by combining Sequence, Is Equal To and Keep value functions.

Record number 1 holds the Order number and
Record 2 holds Order Date
Fist "Is Equal To" checks if the Sequence value is 1 and if it is it passes the name to the next step
The second "Is Equal To" checks if the Sequence value is 2 and if it is it passes the name to the next step

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