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Support range data types.

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Selectivity estimation functions are missing for some range type operators,
which is a TODO.

Jeff Davis
This commit is contained in:
Heikki Linnakangas
2011-11-03 13:16:28 +02:00
parent 4334289186
commit 4429f6a9e3
58 changed files with 6718 additions and 103 deletions
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30
src/backend/utils/cache/lsyscache.c vendored
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@ -26,6 +26,7 @@
#include "catalog/pg_opclass.h"
#include "catalog/pg_operator.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_range.h"
#include "catalog/pg_statistic.h"
#include "catalog/pg_type.h"
#include "miscadmin.h"
@ -2250,6 +2251,16 @@ type_is_enum(Oid typid)
return (get_typtype(typid) == TYPTYPE_ENUM);
}
/*
* type_is_range
* Returns true if the given type is an range type.
*/
bool
type_is_range(Oid typid)
{
return (get_typtype(typid) == TYPTYPE_RANGE);
}
/*
* get_type_category_preferred
*
@ -2855,3 +2866,22 @@ get_namespace_name(Oid nspid)
else
return NULL;
}
Oid
get_range_subtype(Oid rangeOid)
{
HeapTuple tp;
tp = SearchSysCache1(RANGETYPE, ObjectIdGetDatum(rangeOid));
if (HeapTupleIsValid(tp))
{
Form_pg_range rngtup = (Form_pg_range) GETSTRUCT(tp);
Oid result;
result = rngtup->rngsubtype;
ReleaseSysCache(tp);
return result;
}
else
return InvalidOid;
}