Module datafusion::execution::context

SessionContext contains methods for registering data sources and executing queries

Structs

• 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.
• SessionState
  Execution context for registering data sources and executing queries. See SessionContext for a higher level API.
• TaskContext
  Task Execution Context

Enums

• RegisterFunction
  Type of function to create

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
  A pluggable interface to handle CREATE FUNCTION statements and interact with SessionState to registers new udf, udaf or udwf.
• QueryPlanner
  A planner used to add extensions to DataFusion logical and physical plans.