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Commitf897c47

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Fix "element <@ range" cost estimation.
The statistics-based cost estimation patch for range types broke that, byincorrectly assuming that the left operand of all range oeprators is arange. That lead to a "type x is not a range type" error. Because it took solong for anyone to notice, add a regression test for that case.We still don't do proper statistics-based cost estimation for that, so youjust get a default constant estimate. We should look into implementing that,but this patch at least fixes the regression.Spotted by Tom Lane, when testing query from Josh Berkus.
1 parentf8348ea commitf897c47

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3 files changed

+24
-2
lines changed

3 files changed

+24
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lines changed

‎src/backend/utils/adt/rangetypes_selfuncs.c‎

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -154,8 +154,6 @@ rangesel(PG_FUNCTION_ARGS)
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}
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}
156156

157-
typcache=range_get_typcache(fcinfo,vardata.vartype);
158-
159157
/*
160158
* OK, there's a Var and a Const we're dealing with here. We need the
161159
* Const to be of same range type as the column, else we can't do anything
@@ -169,6 +167,8 @@ rangesel(PG_FUNCTION_ARGS)
169167
*/
170168
if (operator==OID_RANGE_CONTAINS_ELEM_OP)
171169
{
170+
typcache=range_get_typcache(fcinfo,vardata.vartype);
171+
172172
if (((Const*)other)->consttype==typcache->rngelemtype->type_id)
173173
{
174174
RangeBoundlower,upper;
@@ -185,6 +185,8 @@ rangesel(PG_FUNCTION_ARGS)
185185
}
186186
else
187187
{
188+
typcache=range_get_typcache(fcinfo, ((Const*)other)->consttype);
189+
188190
if (((Const*)other)->consttype==vardata.vartype)
189191
constrange=DatumGetRangeType(((Const*)other)->constvalue);
190192
}

‎src/test/regress/expected/rangetypes.out‎

Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1043,6 +1043,17 @@ select count(*) from test_range_spgist where ir -|- int4range(100,500);
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RESET enable_seqscan;
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RESET enable_indexscan;
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RESET enable_bitmapscan;
1046+
-- test elem <@ range operator
1047+
create table test_range_elem(i int4);
1048+
create index test_range_elem_idx on test_range_elem (i);
1049+
insert into test_range_elem select i from generate_series(1,100) i;
1050+
select count(*) from test_range_elem where i <@ int4range(10,50);
1051+
count
1052+
-------
1053+
40
1054+
(1 row)
1055+
1056+
drop table test_range_elem;
10461057
--
10471058
-- Btree_gist is not included by default, so to test exclusion
10481059
-- constraints with range types, use singleton int ranges for the "="

‎src/test/regress/sql/rangetypes.sql‎

Lines changed: 9 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -286,6 +286,15 @@ RESET enable_seqscan;
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RESET enable_indexscan;
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RESET enable_bitmapscan;
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289+
-- test elem <@ range operator
290+
createtabletest_range_elem(i int4);
291+
createindextest_range_elem_idxon test_range_elem (i);
292+
insert into test_range_elemselect ifrom generate_series(1,100) i;
293+
294+
selectcount(*)from test_range_elemwhere i<@ int4range(10,50);
295+
296+
droptable test_range_elem;
297+
289298
--
290299
-- Btree_gist is not included by default, so to test exclusion
291300
-- constraints with range types, use singleton int ranges for the "="

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