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Cross-data-type comparisons are now indexable by btrees, pursuant to my

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pghackers proposal of 8-Nov.  All the existing cross-type comparison
operators (int2/int4/int8 and float4/float8) have appropriate support.
The original proposal of storing the right-hand-side datatype as part of
the primary key for pg_amop and pg_amproc got modified a bit in the event;
it is easier to store zero as the 'default' case and only store a nonzero
when the operator is actually cross-type.  Along the way, remove the
long-since-defunct bigbox_ops operator class.
This commit is contained in:
Tom Lane
2003-11-12 21:15:59 +00:00
parent 49f98fa833
commit fa5c8a055a
76 changed files with 2237 additions and 1492 deletions
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15
src/backend/access/nbtree/nbtinsert.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.107 2003/11/09 21:30:35 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.108 2003/11/12 21:15:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1577,26 +1577,27 @@ _bt_isequal(TupleDesc itupdesc, Page page, OffsetNumber offnum,
for (i = 1; i <= keysz; i++)
{
ScanKey entry = &scankey[i - 1];
AttrNumber attno;
Datum datum;
bool isNull;
int32 result;
attno = entry->sk_attno;
attno = scankey->sk_attno;
Assert(attno == i);
datum = index_getattr(itup, attno, itupdesc, &isNull);
/* NULLs are never equal to anything */
if ((entry->sk_flags & SK_ISNULL) || isNull)
if (isNull || (scankey->sk_flags & SK_ISNULL))
return false;
result = DatumGetInt32(FunctionCall2(&entry->sk_func,
entry->sk_argument,
datum));
result = DatumGetInt32(FunctionCall2(&scankey->sk_func,
datum,
scankey->sk_argument));
if (result != 0)
return false;
scankey++;
}
/* if we get here, the keys are equal */