head

Return a set number of rows from the top of the data extract.

Introduction

Use the head enrichment to return a set number of rows from the top of the data extract. All other rows are removed from the data extract. This is the opposite of the tail enrichment.

Creating the enrichment

For more information on creating an enrichment, see Using custom scripts.

Configuring the enrichment

To configure the enrichment, fill in the following fields. Required fields are marked with an asterisk (*).

N*

Enter the number of rows to be returned from the top of the data extract.

Subtable

Enter the name for a subtable that you want to contain the enriched data. The enrichment is applied to the whole data extract, then the enriched data is output into the subtable you have named here.

This subtable is a temporary table, which means it 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.

Example

Enrichment configuration

N*

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
1	Aerified	377303400
2	Kanlam	634282082
3	Y-find	439889356