// Package pgsql provides PostgreSQL-specific utilities and helpers.
//
// # Overview
//
// The pgsql package contains PostgreSQL-specific functionality including:
//   - SQL reserved keyword validation
//   - Data type mappings and conversions
//   - PostgreSQL-specific schema introspection helpers
//
// # Components
//
// keywords.go - SQL reserved keywords validation
//
//	Provides functions to check if identifiers conflict with SQL reserved words
//	and need quoting for safe usage in PostgreSQL queries.
//
// datatypes.go - PostgreSQL data type utilities
//
//	Contains mappings between PostgreSQL data types and their equivalents in other
//	systems, as well as type conversion and normalization functions.
//
// # Usage
//
//	// Check if identifier needs quoting
//	if pgsql.IsReservedKeyword("user") {
//	    // Quote the identifier
//	}
//
//	// Normalize data type
//	normalizedType := pgsql.NormalizeDataType("varchar(255)")
//
// # Purpose
//
// This package supports the PostgreSQL reader and writer implementations by providing
// shared utilities for handling PostgreSQL-specific schema elements and constraints.
package pgsql