Skip to main content
Version: devel

dlt.destinations.impl.lancedb.pyflightsql

A PEP 249 interface over Arrow Flight SQL, implemented with pyarrow alone.

Flight SQL is a protobuf protocol layered on Arrow Flight. pyarrow ships the Flight transport but none of the Flight SQL messages, and running queries needs exactly one of them: CommandStatementQuery wrapped in google.protobuf.Any. Both are single length-delimited fields, encoded here directly so that neither a protobuf runtime nor a native driver becomes a dependency.

Servers that implement only the query surface of Flight SQL are supported: prepared statements are not used (parameters are escaped into the query) and transactions are no-ops.

statement_query_command​

def statement_query_command(query: str) -> bytes

View source on GitHub

Encodes query as a Flight SQL CommandStatementQuery inside a google.protobuf.Any.

interpolate_parameters​

def interpolate_parameters(query: str,
                           parameters: Optional[Sequence[Any]]) -> str

View source on GitHub

Escapes parameters into query.

This demo works on codespaces. Codespaces is a development environment available for free to anyone with a Github account. You'll be asked to fork the demo repository and from there the README guides you with further steps.
The demo uses the Continue VSCode extension.

Off to codespaces!

DHelp

Ask a question

Welcome to "Codex Central", your next-gen help center, driven by OpenAI's GPT-4 model. It's more than just a forum or a FAQ hub – it's a dynamic knowledge base where coders can find AI-assisted solutions to their pressing problems. With GPT-4's powerful comprehension and predictive abilities, Codex Central provides instantaneous issue resolution, insightful debugging, and personalized guidance. Get your code running smoothly with the unparalleled support at Codex Central - coding help reimagined with AI prowess.