 |
ProvSQL C/C++ API
Adding support for provenance and uncertainty management to PostgreSQL databases
|
|
ProvSQL C/C++ API
Adding support for provenance and uncertainty management to PostgreSQL databases
|
Context for the provenance_mutator tree walker.
More...
Public Attributes | |
| Expr * | provsql |
| Provenance expression to substitute for provenance() calls. | |
| const constants_t * | constants |
| Extension OID cache. | |
| bool | provsql_has_aggref |
true when provsql contains an Aggref (set once by replace_provenance_function_by_expression). When true, a provenance() substitution that lands inside another Aggref's argument tree would produce a nested same-level aggregate – parse_agg.c forbids that shape, the planner's preprocess_aggrefs_walker does not recurse through Aggref boundaries, and the inner Aggref's aggno stays at the -1 sentinel and crashes ExecInterpExpr on ecxt_aggvalues[-1]. | |
| bool | inside_aggref |
true while descending the argument tree of an Aggref node. | |
| const constants_t* provenance_mutator_context::constants |
| bool provenance_mutator_context::inside_aggref |
| Expr* provenance_mutator_context::provsql |
Provenance expression to substitute for provenance() calls.
| bool provenance_mutator_context::provsql_has_aggref |
true when provsql contains an Aggref (set once by replace_provenance_function_by_expression). When true, a provenance() substitution that lands inside another Aggref's argument tree would produce a nested same-level aggregate – parse_agg.c forbids that shape, the planner's preprocess_aggrefs_walker does not recurse through Aggref boundaries, and the inner Aggref's aggno stays at the -1 sentinel and crashes ExecInterpExpr on ecxt_aggvalues[-1].