Module context 

SessionContext API for registering data sources and executing queries

Re-exports

pub use crate::execution::session_state::SessionState;

Modules

avro 🔒

csv 🔒

json 🔒

parquet 🔒

Structs

BadPlanVisitor 🔒

EmptySerializerRegistry

Default implementation of SerializerRegistry that throws unimplemented error for all requests.

ExecutionProps

Holds per-query execution properties and data (such as statement starting timestamps).

SQLOptions

Describes which SQL statements can be run.

SessionConfig

Configuration options for SessionContext.

SessionContext

Main interface for executing queries with DataFusion. Maintains the state of the connection between a user and an instance of the DataFusion engine.

TaskContext

Task Execution Context

Enums

RegisterFunction

The result of processing a CreateFunction statement with FunctionFactory.

Traits

DataFilePaths

DataFilePaths adds a method to convert strings and vector of strings to vector of ListingTableUrl URLs. This allows methods such SessionContext::read_csv and SessionContext::read_avro to take either a single file or multiple files.

FunctionFactory

Interface for handling CREATE FUNCTION statements and interacting with SessionState to create and register functions (ScalarUDF, AggregateUDF, WindowUDF, and TableFunctionImpl) dynamically.

QueryPlanner

A planner used to add extensions to DataFusion logical and physical plans.