diff options
Diffstat (limited to 'src/include/nodes/pathnodes.h')
| -rw-r--r-- | src/include/nodes/pathnodes.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h index e4e1c15986f..a65bda7e3c6 100644 --- a/src/include/nodes/pathnodes.h +++ b/src/include/nodes/pathnodes.h @@ -1495,6 +1495,25 @@ typedef struct MaterialPath } MaterialPath; /* + * ResultCachePath represents a ResultCache plan node, i.e., a cache that + * caches tuples from parameterized paths to save the underlying node from + * having to be rescanned for parameter values which are already cached. + */ +typedef struct ResultCachePath +{ + Path path; + Path *subpath; /* outerpath to cache tuples from */ + List *hash_operators; /* hash operators for each key */ + List *param_exprs; /* cache keys */ + bool singlerow; /* true if the cache entry is to be marked as + * complete after caching the first record. */ + double calls; /* expected number of rescans */ + uint32 est_entries; /* The maximum number of entries that the + * planner expects will fit in the cache, or 0 + * if unknown */ +} ResultCachePath; + +/* * UniquePath represents elimination of distinct rows from the output of * its subpath. * @@ -2091,6 +2110,9 @@ typedef struct RestrictInfo Selectivity right_bucketsize; /* avg bucketsize of right side */ Selectivity left_mcvfreq; /* left side's most common val's freq */ Selectivity right_mcvfreq; /* right side's most common val's freq */ + + /* hash equality operator used for result cache, else InvalidOid */ + Oid hasheqoperator; } RestrictInfo; /* |