aggregation_evaluate.c File Reference

SQL function provsql.aggregation_evaluate() – aggregate provenance evaluation. More...

#include "postgres.h"
#include "fmgr.h"
#include "catalog/pg_type.h"
#include "utils/uuid.h"
#include "executor/spi.h"
#include "access/htup_details.h"
#include "provsql_utils.h"
#include "provsql_shmem.h"

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Functions
Datum	aggregation_evaluate (PG_FUNCTION_ARGS)
	PostgreSQL-callable wrapper for aggregation_evaluate().

Detailed Description

SQL function provsql.aggregation_evaluate() – aggregate provenance evaluation.

Implements the SQL-callable function that evaluates an aggregate provenance circuit over a user-supplied semiring. The function is invoked when the query engine encounters a gate_agg / gate_semimod sub-circuit and dispatches to the appropriate SPI-based evaluation helper in Aggregation.cpp.

All semiring operations (plus, times, monus, delta, agg, semimod) are passed as PostgreSQL function OIDs so that the semiring is fully user-defined and extensible from SQL.

Definition in file aggregation_evaluate.c.

Function Documentation

aggregation_evaluate()

Datum aggregation_evaluate

(

PG_FUNCTION_ARGS

)

PostgreSQL-callable wrapper for aggregation_evaluate().

Definition at line 28 of file aggregation_evaluate.c.

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