Module fallback 

Fallback evaluation with spareval for queries the SQL compiler cannot express.

Only available on synchronous backends: spareval pulls quads through an iterator interface. Hash ids make internalize_term free; externalize_term is a cached lookup.

Structs

SqlDataset

A spareval dataset over a SQL backend.

Functions

apply_dataset_options

Applies the dataset options (union default graph, explicit default / named graphs) to a spareval dataset specification.

delete_insert

Evaluates a DELETE/INSERT … WHERE operation with spareval, returning the quads to delete and to insert (both computed before any modification).

evaluate

Evaluates a query with spareval over a sync backend.