tail
Return a set number of rows from the bottom of the data extract.
This guide explains how to configure the tail instruction. To learn about another instruction, go back to the Available custom script instructions overview.
Introduction
Use the tail instruction to return a set number of rows from the bottom of the data extract. All other rows are removed from the data extract. This is the opposite of the head enrichment.
Creating a custom script enrichment using the tail instruction
To create and configure a custom script using the tail instruction, follow these steps:
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In the Instructions step, select the tail instruction.
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To configure the custom script instruction, fill in the following fields. Required fields are marked with an asterisk (*).
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N*
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Enter the number of rows to be returned.
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Subtable
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Enter the name for a subtable that you want to use within this custom script.
A subtable is a temporary table that only exists for this custom script. You can apply additional instructions within the same custom script to the subtable. However, the subtable cannot be used in any other custom scripts.
If a subtable does not exist for the current custom script, the enrichment is applied to the data extract, and the enriched data is output into the subtable. If the subtable already exists for the custom script, the subtable is used as the input for the enrichment and optionally as the output.
Example
Enrichment configuration
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N*
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3
Data table before enrichment
Row Number |
Campaign |
Account IDs |
---|---|---|
1 |
Aerified |
377303400 |
2 |
Kanlam |
634282082 |
3 |
Y-find |
439889356 |
4 |
Stringtough |
515023082 |
5 |
Rank |
796714697 |
6 |
Tampflex |
698305305 |
7 |
Holdlamis |
604447800 |
Data table after enrichment
Row Number |
Campaign |
Account IDs |
---|---|---|
5 |
Rank |
796714697 |
6 |
Tampflex |
698305305 |
7 |
Holdlamis |
604447800 |