Teradata ANOVA

Teradata ANOVA

Core Capabilities

• Automated table structure analysis via DBC.ColumnsV
• Dynamic SQL generation for TD_ANOVA
• Complete workflow from data preparation to results interpretation
• Data quality validation and preprocessing guidance
• Parameter optimization and tuning

Key Parameters

• ColumnNames: Numeric column(s) to test
• GroupColumns: Categorical grouping column(s)
• StatMethod: 'ONEWAY' (one factor) or 'TWOWAY' (two factors)

Use Cases

1. Comparing means across multiple groups
2. A/B/C testing significance
3. Treatment effect analysis
4. Quality control group comparisons

Example Usage

-- TD_ANOVA execution
SELECT * FROM TD_ANOVA (
    ON {USER_DATABASE}.{USER_TABLE} AS InputTable
    USING
    ColumnNames ('{NUMERIC_COLUMN}')
    GroupColumns ('{GROUP_COLUMN}')
    StatMethod ('ONEWAY')              -- 'ONEWAY' or 'TWOWAY'
) AS dt;

Scripts Included

Core Analytics Scripts

• table_analysis.sql: Automatic table structure discovery
• preprocessing.sql: Data preparation and feature engineering
• model_training.sql: TD_ANOVA execution
• evaluation.sql: Results analysis and metrics
• complete_workflow_template.sql: End-to-end workflow

Utility Scripts

• data_quality_checks.sql: Comprehensive data validation
• parameter_tuning.sql: Parameter optimization
• diagnostic_queries.sql: Results diagnostics and interpretation

Best Practices

• Always run table_analysis.sql first to understand your data structure
• Validate data quality before executing the analytical function
• Use parameter_tuning.sql to find optimal configuration
• Review diagnostic_queries.sql output for model/results validation

Limitations

• Requires Teradata Vantage 17.20+ with ClearScape Analytics
• Input data must meet function-specific requirements
• Results depend on data quality and parameter configuration

Teradata ANOVA - ClearScape Analytics skill for Teradata Vantage