diff options
Diffstat (limited to 'src/include/statistics/extended_stats_internal.h')
| -rw-r--r-- | src/include/statistics/extended_stats_internal.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/include/statistics/extended_stats_internal.h b/src/include/statistics/extended_stats_internal.h index 8b73cc688f0..9fc591261eb 100644 --- a/src/include/statistics/extended_stats_internal.h +++ b/src/include/statistics/extended_stats_internal.h @@ -31,6 +31,15 @@ typedef struct int tupno; /* position index for tuple it came from */ } ScalarItem; +/* (de)serialization info */ +typedef struct DimensionInfo +{ + int nvalues; /* number of deduplicated values */ + int nbytes; /* number of bytes (serialized) */ + int typlen; /* pg_type.typlen */ + bool typbyval; /* pg_type.typbyval */ +} DimensionInfo; + /* multi-sort */ typedef struct MultiSortSupportData { @@ -44,6 +53,7 @@ typedef struct SortItem { Datum *values; bool *isnull; + int count; } SortItem; extern MVNDistinct *statext_ndistinct_build(double totalrows, @@ -57,6 +67,12 @@ extern MVDependencies *statext_dependencies_build(int numrows, HeapTuple *rows, extern bytea *statext_dependencies_serialize(MVDependencies *dependencies); extern MVDependencies *statext_dependencies_deserialize(bytea *data); +extern MCVList *statext_mcv_build(int numrows, HeapTuple *rows, + Bitmapset *attrs, VacAttrStats **stats, + double totalrows); +extern bytea *statext_mcv_serialize(MCVList * mcv, VacAttrStats **stats); +extern MCVList * statext_mcv_deserialize(bytea *data); + extern MultiSortSupport multi_sort_init(int ndims); extern void multi_sort_add_dimension(MultiSortSupport mss, int sortdim, Oid oper, Oid collation); @@ -65,5 +81,29 @@ extern int multi_sort_compare_dim(int dim, const SortItem *a, const SortItem *b, MultiSortSupport mss); extern int multi_sort_compare_dims(int start, int end, const SortItem *a, const SortItem *b, MultiSortSupport mss); +extern int compare_scalars_simple(const void *a, const void *b, void *arg); +extern int compare_datums_simple(Datum a, Datum b, SortSupport ssup); + +extern void *bsearch_arg(const void *key, const void *base, + size_t nmemb, size_t size, + int (*compar) (const void *, const void *, void *), + void *arg); + +extern AttrNumber *build_attnums_array(Bitmapset *attrs, int *numattrs); + +extern SortItem *build_sorted_items(int numrows, int *nitems, HeapTuple *rows, + TupleDesc tdesc, MultiSortSupport mss, + int numattrs, AttrNumber *attnums); + + +extern Selectivity mcv_clauselist_selectivity(PlannerInfo *root, + StatisticExtInfo *stat, + List *clauses, + int varRelid, + JoinType jointype, + SpecialJoinInfo *sjinfo, + RelOptInfo *rel, + Selectivity *basesel, + Selectivity *totalsel); #endif /* EXTENDED_STATS_INTERNAL_H */ |