Implementation:Sdv dev SDV Range Init

Knowledge Sources	SDV SDV Documentation
Domains	Data_Quality, Constraint_Satisfaction
Last Updated	2026-02-14 00:00 GMT

Overview

Concrete tool for enforcing three-column range constraints in synthetic data, provided by the SDV library.

Description

The Range constraint ensures that middle_column_name values fall between low_column_name and high_column_name. Supports numerical and datetime columns.

Usage

Create a Range instance and add it to a synthesizer.

Code Reference

Source Location

• Repository: SDV
• File: sdv/cag/range.py
• Lines: L28-108

Signature

class Range(BaseConstraint):
    def __init__(
        self,
        low_column_name,
        middle_column_name,
        high_column_name,
        strict_boundaries=True,
        table_name=None,
    ):
        """
        Args:
            low_column_name (str): Lower bound column.
            middle_column_name (str): Column that must be between bounds.
            high_column_name (str): Upper bound column.
            strict_boundaries (bool): Use strict < comparison. Defaults to True.
            table_name (str or None): Target table (multi-table). Defaults to None.
        """

Import

from sdv.cag import Range

I/O Contract

Inputs

Name	Type	Required	Description
low_column_name	str	Yes	Lower bound column
middle_column_name	str	Yes	Column that must be between bounds
high_column_name	str	Yes	Upper bound column
strict_boundaries	bool	No	Use strict < comparison (default: True)
table_name	str or None	No	Target table for multi-table

Outputs

Name	Type	Description
instance	Range	Constraint object ready to add to a synthesizer

Usage Examples

from sdv.cag import Range

constraint = Range(
    low_column_name='min_price',
    middle_column_name='actual_price',
    high_column_name='max_price',
    strict_boundaries=True,
)

synthesizer.add_constraints([constraint])

Related Pages

Implements Principle

• Principle:Sdv_dev_SDV_Range_Constraint

Requires Environment

• Environment:Sdv_dev_SDV_Python_Runtime