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docs: update documentation to reflect v1.6.0 features as available
This commit updates all documentation to reflect that v1.6.0 features are now available (not planned): Migration Guides: - FROM_SQLFLUFF.md: Updated linting rules (10 rules L001-L010), auto-fix, VSCode extension, and .gosqlx.yml config as available in v1.6.0 - FROM_PG_QUERY.md: Updated JSON/JSONB operators as supported in v1.6.0 Documentation Updates: - Updated version references from v1.5.x to v1.6.0 across all docs - Added v1.6.0 upgrade section to UPGRADE_GUIDE.md - Updated COMPARISON.md with v1.6.0 features and performance data - Updated CLAUDE.md production status to v1.6.0+ - Updated performance_baselines.json to v1.6.0 Key v1.6.0 Features Now Documented: - PostgreSQL Extensions (LATERAL JOIN, JSON/JSONB operators, DISTINCT ON) - Language Server Protocol (LSP) server - VSCode Extension - 10 Linting Rules (L001-L010) with auto-fix - .gosqlx.yml configuration file support - go-task Taskfile.yml - Structured error codes (E1001-E3004) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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‎CLAUDE.md‎

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GoSQLX is a **production-ready**, **race-free**, high-performance SQL parsing SDK for Go that provides lexing, parsing, and AST generation with zero-copy optimizations. The library is designed for enterprise use with comprehensive object pooling for memory efficiency.
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### **Production Status**: ✅ **VALIDATED FOR PRODUCTION DEPLOYMENT** (v1.5.1+)
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### **Production Status**: ✅ **VALIDATED FOR PRODUCTION DEPLOYMENT** (v1.6.0+)
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- **Thread Safety**: Confirmed race-free through comprehensive concurrent testing
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- **Performance**: 1.38M+ operations/second sustained, up to 1.5M peak with memory-efficient object pooling
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- **International**: Full Unicode support for global SQL processing
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- ✅ Allows for comprehensive testing and validation before tagging
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- ✅ Enables rollback if critical issues are found before release
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## Current SQL Feature Support (v1.5.1+)
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## Current SQL Feature Support (v1.6.0)
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### GROUPING SETS, ROLLUP, CUBE (SQL-99 T431) - Complete ✅
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```sql

‎README.md‎

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# Parse SQL to AST representation
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gosqlx parse -f json complex_query.sql
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# Unix Pipeline Support (NEW in v1.5.0)
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# Unix Pipeline Support
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cat query.sql | gosqlx format # Format from stdin
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echo "SELECT * FROM users" | gosqlx validate # Validate from pipe
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gosqlx format query.sql | gosqlx validate # Chain commands

‎docs/COMPARISON.md‎

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# GoSQLX vs Alternatives: Comprehensive Comparison
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**Last Updated:** 2025-11-28
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**GoSQLX Version:** v1.5.1
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**Last Updated:** 2025-12-11
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**GoSQLX Version:** v1.6.0
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This guide helps you choose the right SQL parsing tool for your needs. We provide an honest assessment of GoSQLX's strengths and limitations compared to popular alternatives.
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**Last Updated:** 2025-11-28
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**Version:** v1.5.1
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**Version:** v1.6.0
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*Benchmark numbers are reproducible. See `/benchmarks` directory.*

‎docs/PERFORMANCE_TUNING.md‎

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# GoSQLX Performance Tuning Guide
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**Last Updated:** 2025-11-17
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**GoSQLX Version:** v1.5.1+
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**Last Updated:** 2025-12-11
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**GoSQLX Version:** v1.6.0
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**Target Audience:** Production engineers, performance engineers, developers optimizing high-throughput systems
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This comprehensive guide helps you achieve optimal performance with GoSQLX in production environments. We cover profiling techniques, object pool optimization, concurrent processing patterns, memory management, and benchmark-driven optimization.
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## Performance Overview
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### Baseline Performance (v1.5.1)
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### Baseline Performance (v1.6.0)
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GoSQLX delivers production-validated performance across multiple workloads:
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‎docs/PRODUCTION_GUIDE.md‎

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# GoSQLX Production Deployment Guide
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**Version**: v1.5.1+ | **Last Updated**: November 2025
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**Version**: v1.6.0 | **Last Updated**: December 2025
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Comprehensive guide for deploying GoSQLX in production environments.
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‎docs/README.md‎

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Comprehensive documentation for the GoSQLX SQL parsing SDK.
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**Current Version**: v1.5.1+ | **Last Updated**: November 2025
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**Current Version**: v1.6.0 | **Last Updated**: December 2025
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## Documentation Index
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‎docs/SECURITY.md‎

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## 🛡️ Comprehensive Security Assessment
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**Analysis Date**: November 2025
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**Version**: v1.5.1+
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**Analysis Date**: December 2025
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**Version**: v1.6.0
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**Security Score**: 9.0/10 ⭐⭐⭐⭐⭐
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‎docs/SQL_COMPATIBILITY.md‎

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# GoSQLX SQL Feature Compatibility Matrix
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**Version**: v1.5.1+ | **Last Updated**: November 2025
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**Version**: v1.6.0 | **Last Updated**: December 2025
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## Overview
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‎docs/UPGRADE_GUIDE.md‎

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## Upgrading to v1.6.0 from v1.5.x
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**Release Date**: December 11, 2025
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**Type**: Major Feature Release (Non-Breaking)
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**Focus**: PostgreSQL Extensions, LSP Server, Developer Tools
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### 🎯 Quick Summary
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v1.6.0 is a **100% backward compatible** major feature release. It adds comprehensive PostgreSQL support, a full Language Server Protocol implementation, VSCode extension, and significant performance optimizations.
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### ✅ What's New
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**PostgreSQL Extensions:**
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- LATERAL JOIN support with LEFT/INNER/CROSS variants
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- JSON/JSONB operators: `->`, `->>`, `#>`, `#>>`, `@>`, `<@`, `?`, `?|`, `?&`, `#-`
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- DISTINCT ON (column1, column2) syntax
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- FILTER (WHERE condition) clause for aggregates
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- ORDER BY inside aggregates (STRING_AGG, ARRAY_AGG, JSON_AGG)
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- RETURNING clause for INSERT, UPDATE, DELETE
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**Language Server Protocol:**
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- Full LSP server for IDE integration (`gosqlx lsp`)
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- Real-time diagnostics, completion (100+ keywords), hover (60+ keywords)
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- Document symbols, signature help, code actions
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**VSCode Extension:**
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- Official GoSQLX extension with syntax highlighting
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- SQL formatting and intelligent autocomplete
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**Performance Improvements:**
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- 14x faster token type comparison with O(1) int-based lookups
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- 575x faster keyword suggestions with caching
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- 22.5x faster config file loading
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**Developer Tools:**
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- go-task Taskfile.yml replacing Makefile
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- 10 linter rules (L001-L010) with auto-fix
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- Structured error codes (E1001-E3004)
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### 📦 Upgrade Steps
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```bash
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# Update your go.mod
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go get github.com/ajitpratap0/GoSQLX@v1.6.0
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# Or update CLI
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go install github.com/ajitpratap0/GoSQLX/cmd/gosqlx@v1.6.0
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```
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### ⚠️ Breaking Changes
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**None** - v1.6.0 is fully backward compatible with v1.5.x.
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## Upgrading to v1.5.0 from v1.4.0
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**Release Date**: November 15, 2025

‎docs/USAGE_GUIDE.md‎

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# GoSQLX Usage Guide
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**Version**: v1.5.1+ | **Last Updated**: November 2025
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**Version**: v1.6.0 | **Last Updated**: December 2025
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## Table of Contents
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- [Getting Started](#getting-started)

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