EXAMPLE - Delete and Keep Transforms
This examples illustrates how you can keep and delete rows from your dataset.
Source:
Your dataset includes the following order information. You want to edit your dataset so that:
All orders for products that are no longer available are removed. These include the following product IDs:
P100
,P101
,P102
,P103
.All orders that were placed within the last 90 days are retained.
OrderId | OrderDate | ProdId | ProductName | ProductColor | Qty | OrderValue |
---|---|---|---|---|---|---|
1001 | 6/14/2015 | P100 | Hat | Brown | 1 | 90 |
1002 | 1/15/2016 | P101 | Hat | Black | 2 | 180 |
1003 | 11/11/2015 | P103 | Sweater | Black | 3 | 255 |
1004 | 8/6/2015 | P105 | Cardigan | Red | 4 | 320 |
1005 | 7/29/2015 | P103 | Sweeter | Black | 5 | 375 |
1006 | 12/1/2015 | P102 | Pants | White | 6 | 420 |
1007 | 12/28/2015 | P107 | T-shirt | White | 7 | 390 |
1008 | 1/15/2016 | P105 | Cardigan | Red | 8 | 420 |
1009 | 1/31/2016 | P108 | Coat | Navy | 9 | 495 |
Transformation:
First, you remove the orders for old products. Since the set of products is relatively small, you can start first by adding the following:
注記
Just preview this transformation. Do not add it to your recipe yet.
Transformation Name | |
---|---|
Parameter: Condition | Custom formula |
Parameter: Type of formula | Custom single |
Parameter: Condition | (ProdId == 'P100') |
Parameter: Action | Delete matching rows |
When this step is previewed, you should notice that the top row in the above table is highlighted for removal. Notice how the transformation relies on the ProdId
value. If you look at the ProductName
value, you might notice that there is a misspelling in one of the affected rows, so that column is not a good one for comparison purposes.
You can add the other product IDs to the transformation in the following expansion of the transformation, in which any row that has a matching ProdId
value is removed:
Transformation Name | |
---|---|
Parameter: Condition | Custom formula |
Parameter: Type of formula | Custom single |
Parameter: Condition | (ProdId == 'P100' || ProdId == 'P101' || ProdId == 'P102' || ProdId == 'P103') |
Parameter: Action | Delete matching rows |
When the above step is added to your recipe, you should see data that looks like the following:
OrderId | OrderDate | ProdId | ProductName | ProductColor | Qty | OrderValue |
---|---|---|---|---|---|---|
1004 | 8/6/2015 | P105 | Cardigan | Red | 4 | 320 |
1007 | 12/28/2015 | P107 | T-shirt | White | 7 | 390 |
1008 | 1/15/2016 | P105 | Cardigan | Red | 8 | 420 |
1009 | 1/31/2016 | P108 | Coat | Navy | 9 | 495 |
Now, you can filter out of the dataset orders that are older than 90 days. First, add a column with today's date:
Transformation Name | |
---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | '2/25/16' |
Parameter: New column name | 'today' |
Keep the rows that are within 90 days of this date using the following:
Transformation Name | |
---|---|
Parameter: Condition | Custom formula |
Parameter: Type of formula | Custom single |
Parameter: Condition | datedif(OrderDate,today,day) <= 90 |
Parameter: Action | Keep matching rows |
Don't forget to delete the today
column, which is no longer needed:
Transformation Name | |
---|---|
Parameter: Columns | today |
Parameter: Action | Delete selected columns |
Results:
OrderId | OrderDate | ProdId | ProductName | ProductColor | Qty | OrderValue |
---|---|---|---|---|---|---|
1007 | 12/28/2015 | P107 | T-shirt | White | 7 | 390 |
1008 | 1/15/2016 | P105 | Cardigan | Red | 8 | 420 |
1009 | 1/31/2016 | P108 | Coat | Navy | 9 | 495 |