Excel to Graphviz — Version 10.2.0

This release continues the Version 10 series focus on strengthening the SQL engine and improving workflow usability throughout the Relationship Visualizer.

🚀 Enhancements

The Relationship Visualizer received the following improvements:

Added SQL placeholder substitution

SQL extensions now support SET PLACEHOLDER name = value definitions and expand {name} tokens in statements before execution, enabling template‑style SQL for parameter‑driven queries.

Added filename sanitization

Introduced a routine that replaces invalid characters in filenames to prevent file write errors.