snowflake-semantic-tools 0.2.0

dbt extension for managing Snowflake Semantic Views and Cortex Analyst semantic models

Snowflake Semantic Tools

Build and deploy Snowflake Semantic Views from your dbt project

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What is SST?

SST helps you build Snowflake Semantic Views—a standardized semantic layer that lives in Snowflake and powers AI and BI tools—all from within your dbt projects.

Why Semantic Views matter:

• Cortex Analyst & Agents - Semantic views give Snowflake's AI the context it needs to accurately answer natural language questions about your data
• BI Tools - Sigma, Tableau, and other tools can consume semantic views for consistent metrics and definitions across your organization
• Single source of truth - Define metrics, relationships, and business logic once in Snowflake, use everywhere

What SST does:

• Define semantics as code - Metrics, relationships, filters, verified queries as YAML in your dbt project
• Deploy to Snowflake - Generate native SEMANTIC VIEW objects from your definitions
• Enrich automatically - Pull column types, samples, and metadata from Snowflake schemas
• Validate before deploy - 100+ validation rules catch errors before they reach Snowflake
• Version control everything - Your semantic layer lives in git alongside your dbt models

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Quick Start

Installation

pip install snowflake-semantic-tools

Setup

cd your-dbt-project
sst init  # Interactive setup wizard

The wizard will:

• Detect your dbt project and profile
• Create sst_config.yaml with defaults
• Set up the semantic models directory
• Generate example files

Basic Usage

# Validate your semantic models
sst validate

# Enrich specific models with metadata from Snowflake
sst enrich --models customers,orders

# Deploy to Snowflake (validate → extract → generate)
sst deploy

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Key Features

• Interactive Setup - sst init wizard configures your project in seconds
• Metadata Enrichment - Auto-populate YAML with column & data types, sample values, synonyms, and enums
• Validation - Catch errors before deployment with comprehensive validation rules
• SQL Syntax Validation - Validate metrics and filters against Snowflake
• Schema Verification - Verify YAML columns exist in Snowflake with fuzzy matching
• Semantic Views - Generate native Snowflake SEMANTIC VIEWs

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Documentation

See the docs/ directory for comprehensive documentation:

• Getting Started - Installation and first steps
• Validation Checklist - Complete list of all validation checks
• CLI Reference - All commands and options
• User Guide - Enrichment and validation deep dives
• Semantic Models Guide - Writing metrics and relationships
• Authentication - Snowflake connection setup

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Requirements

• Python 3.10-3.11
• Snowflake account
• dbt project (dbt Core or dbt Cloud CLI)

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Commands

Command	Purpose
sst init	Interactive setup wizard
sst validate	Check for errors (no Snowflake needed)
sst enrich	Add metadata to YAML from Snowflake
sst format	YAML linter for consistency
sst extract	Load metadata to Snowflake tables
sst generate	Create semantic views
sst deploy	One-step: validate → extract → generate
sst debug	Show config and test connection
sst migrate-meta	Migrate meta.sst to config.meta.sst (dbt Fusion)

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Development Setup

Only needed if you're contributing code or developing locally.

# Clone the repository
git clone https://github.com/WhoopInc/snowflake-semantic-tools.git
cd snowflake-semantic-tools

# Install with Poetry (includes dev dependencies)
poetry install --with dev

# Verify installation
sst --version

# Run tests
pytest tests/unit/

# Format code
black snowflake_semantic_tools/
isort snowflake_semantic_tools/

# Run linting
flake8 snowflake_semantic_tools/

See CONTRIBUTING.md for detailed development guidelines.

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Contributing

We welcome contributions! Please see CONTRIBUTING.md for:

• How to report issues
• Development setup instructions
• Code style guidelines
• Pull request process

All contributions must be reviewed by the maintainer before merging.

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Support

• Documentation: See the docs/ directory
• Issues: GitHub Issues

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License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.