Until now you've been filtering upon conditions on the values of the fields. You could also filter rows based on the row numbers. There are a couple of steps that allow us to do that. Here is a brief summary of them:
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Step |
Description |
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Sample rows (Statistics category) |
This step samples the rows based on a list of row numbers or row number ranges. For example, 1,5,10..20 will filter row 1, row 5, and all the rows from 10 up to 20 (10 and 20 included). |
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Reservoir Sampling (Statistics category) |
This step allows you to sample a fixed number of rows. The step uses uniform sampling, which means that all incoming rows have an equal chance of being selected. |
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