Apache DataSketches library functions for Google BigQuery

User-Defined Aggregate Functions (UDAFs) and non-aggregate (scalar) functions (UDFs) for BigQuery SQL engine.

Please visit the main Apache DataSketches website for more information about DataSketches library.

If you are interested in making contributions to this project please see our Community page for how to contact us.

Requirements

Requires Emscripten (emcc compiler)
Requires a link to /datasketches-cpp in this repository
Requires make utility
Requires Google Cloud CLI

Building, Installing, and Testing

Requires setting environment variables
- GCS_BUCKET: to hold compiled artifacts
- BQ_DATASET: location of stored SQL functions (routines)

make          # performs compilation
make install  # upload to $GCS_BUCKET & create functions in $BQ_DATASET
make test     # runs predefined tests in BQ

The above steps can be executed in the root directory to install everything, or can be run from an individual sketch directory to install only that particular sketch.