Crate oxigdal_query 

SQL-like query language and cost-based optimizer for geospatial data.

This crate provides a complete query engine with:

• SQL-like query language parsing
• Cost-based query optimization
• Parallel query execution
• Result caching
• Index selection

Example

use oxigdal_query::*;

// Parse SQL query
let sql = "SELECT id, name FROM users WHERE age > 18";
let statement = parser::sql::parse_sql(sql)?;

// Optimize query
let optimizer = optimizer::Optimizer::new();
let optimized = optimizer.optimize(statement)?;

// Execute query
let mut executor = executor::Executor::new();
// Register data sources...
let results = executor.execute(&optimized.statement).await?;

Re-exports

pub use cache::CacheConfig;

pub use cache::QueryCache;

pub use error::QueryError;

pub use error::Result;

pub use executor::Executor;

pub use explain::ExplainPlan;

pub use optimizer::OptimizedQuery;

pub use optimizer::Optimizer;

pub use optimizer::OptimizerConfig;

pub use parser::Statement;

pub use parser::parse_sql;

Modules

cache

Query result caching.

error

Error types for query processing.

executor

Query execution engine.

explain

Query plan explanation and visualization.

index

Index metadata and selection.

optimizer

Query optimizer.

parallel

Parallel query execution.

parser

Query language parser.

Structs

QueryEngine

Query engine that combines all components.