Expand description
Query runner for PRQL
Takes a project tree of source files, compiles PRQL and executes the queries in databases.
Defines database connection parameters in .prql files using @lutra annotations.
Works in following stages:
- discover: walk over a directory in the file system to find .prql source files,
- compile: use prqlc to compile PRQL to SQL and then find @lutra annotations,
- execute: connect to databases to execute the queries and return results as Apache Arrow record batches.
For executing the queries and converting to Apache Arrow, lutra uses connector_arrow crate.
Modules§
Structs§
- Compile
Params - Discover
Params - Execute
Params - Project
Compiled - Project
Discovered - The core object containing PRQL sources, compilation results and lutra annotations.
- Pull
Schema Params