cbf46a2988
Add support for CEL exists() comprehension with startsWith, endsWith, and
contains predicates to enable powerful tag filtering patterns.
Features:
- tags.exists(t, t.startsWith("prefix")) - Match tags by prefix
- tags.exists(t, t.endsWith("suffix")) - Match tags by suffix
- tags.exists(t, t.contains("substring")) - Match tags by substring
- Negation: !tags.exists(...) to exclude matching tags
- Works with all operators (AND, OR, NOT) and other filters
Implementation:
- Added ListComprehensionCondition IR type for comprehension expressions
- Parser detects exists() macro and extracts predicates
- Renderer generates optimized SQL for SQLite, MySQL, PostgreSQL
- Proper NULL/empty array handling across all database dialects
- Helper functions reduce code duplication
Design decisions:
- Only exists() supported (all() rejected at parse time with clear error)
- Only simple predicates (matches() excluded to avoid regex complexity)
- Fail-fast validation with helpful error messages
Tests:
- Comprehensive test suite covering all predicates and edge cases
- Tests for NULL/empty arrays, combined filters, negation
- Real-world use case test for Issue #5480 (archive workflow)
- All tests pass on SQLite, MySQL, PostgreSQL
Closes #5480
|
4 months ago | |
|---|---|---|
| .github | 5 months ago | |
| cmd/memos | 8 months ago | |
| internal | 5 months ago | |
| plugin | 4 months ago | |
| proto | 5 months ago | |
| scripts | 5 months ago | |
| server | 5 months ago | |
| store | 4 months ago | |
| web | 5 months ago | |
| .dockerignore | 5 months ago | |
| .gitignore | 5 months ago | |
| .golangci.yaml | 5 months ago | |
| AGENTS.md | 5 months ago | |
| CODEOWNERS | 5 months ago | |
| LICENSE | 1 year ago | |
| README.md | 5 months ago | |
| SECURITY.md | 6 months ago | |
| go.mod | 5 months ago | |
| go.sum | 5 months ago | |
README.md
Memos
An open-source, self-hosted note-taking service. Your thoughts, your data, your control — no tracking, no ads, no subscription fees.
💎 Featured Sponsors
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Overview
Memos is a privacy-first, self-hosted knowledge base that works seamlessly for personal notes, team wikis, and knowledge management. Built with Go and React, it offers lightning-fast performance without compromising on features or usability.
Why choose Memos over cloud services?
| Feature | Memos | Cloud Services |
|---|---|---|
| Privacy | ✅ Self-hosted, zero telemetry | ❌ Your data on their servers |
| Cost | ✅ Free forever, MIT license | ❌ Subscription fees |
| Performance | ✅ Instant load, no latency | ⚠️ Depends on internet |
| Ownership | ✅ Full control & export | ❌ Vendor lock-in |
| API Access | ✅ Full REST + gRPC APIs | ⚠️ Limited or paid |
| Customization | ✅ Open source, forkable | ❌ Closed ecosystem |
Features
-
🔒 Privacy-First Architecture
- Self-hosted on your infrastructure with zero telemetry
- Complete data ownership and export capabilities
- No tracking, no ads, no vendor lock-in
-
📝 Markdown Native
- Full markdown support
- Plain text storage — take your data anywhere
-
⚡ Blazing Fast
- Built with Go backend and React frontend
- Optimized for performance at any scale
-
🐳 Simple Deployment
- One-line Docker installation
- Supports SQLite, MySQL, and PostgreSQL
-
🔗 Developer-Friendly
- Full REST and gRPC APIs
- Easy integration with existing workflows
-
🎨 Beautiful Interface
- Clean, minimal design and dark mode support
- Mobile-responsive layout
Quick Start
Docker (Recommended)
docker run -d \
--name memos \
-p 5230:5230 \
-v ~/.memos:/var/opt/memos \
neosmemo/memos:stable
Open http://localhost:5230 and start writing!
Try the Live Demo
Don't want to install yet? Try our live demo first!
Other Installation Methods
- Docker Compose - Recommended for production deployments
- Pre-built Binaries - Available for Linux, macOS, and Windows
- Kubernetes - Helm charts and manifests available
- Build from Source - For development and customization
See our installation guide for detailed instructions.
Contributing
We welcome contributions of all kinds! Whether you're fixing bugs, adding features, improving documentation, or helping with translations — every contribution matters.
Ways to contribute:
- 🐛 Report bugs
- 💡 Suggest features
- 🔧 Submit pull requests
- 📖 Improve documentation
- 🌍 Help with translations
Sponsors
Love Memos? Sponsor us on GitHub to help keep the project growing!
Star History
License
Memos is open-source software licensed under the MIT License.
Privacy Policy
Memos is built with privacy as a core principle. As a self-hosted application, all your data stays on your infrastructure. There is no telemetry, no tracking, and no data collection. See our Privacy Policy for details.
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