Teradata Ordinal Encoding Suite

Core Capabilities

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

Key Parameters

• TargetColumn: Categorical column to encode
• Approach: 'LIST' (manual order) or 'AUTO' (alphabetical)
• Categories: Ordered list of category values (for LIST approach)
• OrdinalValues: Corresponding integer values
• Accumulate: Columns to keep in output (Transform)

Use Cases

1. Encoding ordered categories (low/medium/high)
2. Feature engineering for ML models
3. Survey response encoding
4. Education level or rating encoding

Example Usage

-- TD_OrdinalEncodingFit execution
SELECT * FROM TD_OrdinalEncodingFit (
    ON {USER_DATABASE}.{USER_TABLE} AS InputTable
    USING
    TargetColumn ('{CATEGORICAL_COLUMN}')
    Approach ('LIST')                  -- 'LIST' (manual) or 'AUTO' (alphabetical)
    Categories ('{CAT_1}','{CAT_2}','{CAT_3}')
    OrdinalValues (1, 2, 3)
) 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_OrdinalEncodingFit 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 Ordinal Encoding Suite - ClearScape Analytics skill for Teradata Vantage