ProvenanceRelationKey Struct Reference

One PRIMARY-KEY or NOT-NULL-UNIQUE key on a relation. More...

#include "provsql_utils.h"

Public Attributes
uint16	col_n
AttrNumber	cols [PROVSQL_KEY_CACHE_MAX_KEY_COLS]

Detailed Description

One PRIMARY-KEY or NOT-NULL-UNIQUE key on a relation.

col_n is the number of valid entries in cols (in pg_index.indkey order, i.e. column position in the key, not pg_attribute.attnum order). All columns are NOT NULL by construction: PRIMARY KEY enforces this implicitly, and UNIQUE constraints are admitted only when pg_attribute.attnotnull is true for every constituent column (the §2 soundness trap on nullable UNIQUE).

Definition at line 416 of file provsql_utils.h.

Member Data Documentation

col_n

uint16 ProvenanceRelationKey::col_n

Definition at line 417 of file provsql_utils.h.

cols

AttrNumber ProvenanceRelationKey::cols[PROVSQL_KEY_CACHE_MAX_KEY_COLS]

Definition at line 418 of file provsql_utils.h.

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The documentation for this struct was generated from the following file:

• /home/pierre/git/software/provsql/src/provsql_utils.h