Struct QueryEngine 

pub struct QueryEngine { /* private fields */ }

The main query engine that wraps DuckDB

Implementations

impl QueryEngine

pub fn new(config: &QueryConfig) -> Result<Self>

Create a new query engine with the given configuration

pub fn from_cache(cache_path: &Path, config: &QueryConfig) -> Result<Self>

Create a query engine from a cached database file

pub fn import_dump(&mut self, dump_path: &Path) -> Result<&ImportStats>

Import a SQL dump file into the DuckDB database

pub fn query(&self, sql: &str) -> Result<QueryResult>

Execute a query and return the results

pub fn execute(&self, sql: &str) -> Result<usize>

Execute a statement that doesn’t return results (e.g., CREATE, INSERT)

pub fn list_tables(&self) -> Result<Vec<String>>

Get list of tables in the database

pub fn describe_table(&self, table: &str) -> Result<QueryResult>

Get schema for a specific table

pub fn import_stats(&self) -> Option<&ImportStats>

Get import statistics (if a dump was imported)

pub fn connection(&self) -> &Connection

Get the underlying DuckDB connection (for advanced use)

pub fn save_to_file(&self, path: &Path) -> Result<()>

Save the current database to a file (for caching)

Trait Implementations

impl Drop for QueryEngine

fn drop(&mut self)

Executes the destructor for this type.