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By the end of this chapter you will be able to:

  • Create lookup pipes
  • Enrich a data set using a lookup pipe

Copy data from merge

First, you will create a new

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table to copy over all data from your merge:

  1. Hover over the

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  1. table Customer All Details, and press 

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  2. Call this

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  1. table: Customer Details with Region.
  2. Copy all attributes into your new

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  1. table:
    1. Hover over Customer All Details and in the hover menu press 

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    2. Select all attributes in the list:
      1. Select the top attribute.
      2. Keep shift pressed down and select the bottom attribute in the list.
    3. Drag the attributes on top of the

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    1. table Customer Details with Region.
  1. Run your new

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  1. table and look at the data in it to verify that you have copied data from the merge

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  1. table.
  2. Remember to save your model layout.

Here you have copied data from a merge

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table into a new

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table – but this method works for any type of input

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table. Copying data into a new

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table is a common starting point for a modelling step.

Create a lookup into reference data

Now you will add a lookup pipe from Regions by County to enrich the data in Customer Details with Region, by finding the region for each customer address:

  1. Hover over RegionsByCounty and

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  1. press 
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  2. Move the pointer over the top of Customer Details with Region and select – this will attach the end of the pipe to the selected

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  1. table.
  2. In the pipe details form that pops up, enter:

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      • Name: region
      • Type: Look-up
      • Data To Read: leave as the default – Latest

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      • Press 
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      • In the Order/Index section we will set up the fields to match across the two

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      • recordsets:
        1. Press 

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        2. Drag the attribute County from the left hand list (the input attributes from the

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        1. table RegionsByCounty) into the list of Order/Index attributes.
        2. Drag the attribute County from the right hand list (the output attributes from the

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        1. table Customer Details with Region) on top of the Order/Index attribute County.
          • In the Order/Index section, you should see that the Index Expression column has updated to _out.

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          • County 

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          • This means that the lookup will match records in the reference data (RegionsByCounty) where County

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          • equals County in the output data (Customer Details with Region).
        1. Press 

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      • Note that the pipe linking RegionsByCounty to Customer Details with Region is dashed; this indicates that this is a lookup pipe.
      • When adding lookup pipes remember that the arrow points in the direction that the data flows; here you are getting data from RegionsByCounty to add to Customer Details with Region.

    Enrich a data set using a Lookup Pipe

    Now you can add the region

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    from RegionsByCounty

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     to Customer Details with Region:

    1. Hover over RegionsByCounty and in the hover menu press 

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    2. The list of the

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    1. table attributes will pop up.
    2. Drag the attribute Region from RegionsByCounty on top of Customer Details with Region.
    3. Run analysis on Customer Details with Region.

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    1. View the data in

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    1. the table. Check that the Region attribute has been populated with the value looked up from RegionsByCounty.