Input - Aster Analytics

Teradata Aster® Analytics Foundation User GuideUpdate 2

Product
Aster Analytics
Release Number
7.00.02
Published
September 2017
Language
English (United States)
Last Update
2018-04-17
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dita:id
B700-1022
Product Category
Software

The Sample function always requires a data table. Some syntax options also require a summary table.

Sample Data Table Schema
Column Name Data Type Description
data_column Any Contains data to be sampled.
condition_column Any [Optional] Contains the data conditions. For some syntax options, the data conditions are in the summary table.
Sample Summary Table Schema
Column Name Data Type Description
data_column Any Contains data to be sampled. (Optional for Unconditional Sampling, Approximate Sample Size, in the Sample Syntax section.)
condition_column Any Contains the data conditions.
The summary input must summarize the population statistics faithfully. That is, sum / stratum_count with a non-null stratum value must equal the total population size. Otherwise, the final sample output might not approximate the target sample fractions well.