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Add index-only scan support to range type GiST opclass.
Andreas Karlsson
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1c41e2a998
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@ -216,7 +216,7 @@ range_gist_union(PG_FUNCTION_ARGS)
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PG_RETURN_RANGE(result_range);
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}
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/* compress, decompress are no-ops */
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/* compress, decompress, fetch are no-ops */
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Datum
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range_gist_compress(PG_FUNCTION_ARGS)
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{
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@ -233,6 +233,14 @@ range_gist_decompress(PG_FUNCTION_ARGS)
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PG_RETURN_POINTER(entry);
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}
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Datum
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range_gist_fetch(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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PG_RETURN_POINTER(entry);
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}
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/*
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* GiST page split penalty function.
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*
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@ -53,6 +53,6 @@
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*/
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/* yyyymmddN */
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#define CATALOG_VERSION_NO 201503281
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#define CATALOG_VERSION_NO 201503301
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#endif
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@ -235,6 +235,7 @@ DATA(insert ( 3919 3831 3831 4 3878 ));
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DATA(insert ( 3919 3831 3831 5 3879 ));
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DATA(insert ( 3919 3831 3831 6 3880 ));
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DATA(insert ( 3919 3831 3831 7 3881 ));
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DATA(insert ( 3919 3831 3831 9 3996 ));
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/* gin */
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@ -4951,6 +4951,8 @@ DATA(insert OID = 3877 ( range_gist_compress PGNSP PGUID 12 1 0 0 0 f f f f t f
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DESCR("GiST support");
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DATA(insert OID = 3878 ( range_gist_decompress PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 2281 "2281" _null_ _null_ _null_ _null_ range_gist_decompress _null_ _null_ _null_ ));
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DESCR("GiST support");
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DATA(insert OID = 3996 ( range_gist_fetch PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 2281 "2281" _null_ _null_ _null_ _null_ range_gist_fetch _null_ _null_ _null_ ));
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DESCR("GiST support");
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DATA(insert OID = 3879 ( range_gist_penalty PGNSP PGUID 12 1 0 0 0 f f f f t f i 3 0 2281 "2281 2281 2281" _null_ _null_ _null_ _null_ range_gist_penalty _null_ _null_ _null_ ));
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DESCR("GiST support");
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DATA(insert OID = 3880 ( range_gist_picksplit PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 2281 "2281 2281" _null_ _null_ _null_ _null_ range_gist_picksplit _null_ _null_ _null_ ));
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@ -209,6 +209,7 @@ extern RangeType *make_empty_range(TypeCacheEntry *typcache);
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extern Datum range_gist_consistent(PG_FUNCTION_ARGS);
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extern Datum range_gist_compress(PG_FUNCTION_ARGS);
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extern Datum range_gist_decompress(PG_FUNCTION_ARGS);
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extern Datum range_gist_fetch(PG_FUNCTION_ARGS);
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extern Datum range_gist_union(PG_FUNCTION_ARGS);
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extern Datum range_gist_penalty(PG_FUNCTION_ARGS);
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extern Datum range_gist_picksplit(PG_FUNCTION_ARGS);
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@ -1072,6 +1072,25 @@ select count(*) from test_range_spgist where ir -|- int4range(100,500);
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5
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(1 row)
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-- test index-only scans
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explain (costs off)
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select ir from test_range_spgist where ir -|- int4range(10,20) order by ir;
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QUERY PLAN
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------------------------------------------------------------------------
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Sort
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Sort Key: ir
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-> Index Only Scan using test_range_spgist_idx on test_range_spgist
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Index Cond: (ir -|- '[10,20)'::int4range)
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(4 rows)
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select ir from test_range_spgist where ir -|- int4range(10,20) order by ir;
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ir
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------------
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[20,30)
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[20,30)
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[20,10020)
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(3 rows)
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RESET enable_seqscan;
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RESET enable_indexscan;
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RESET enable_bitmapscan;
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@ -286,6 +286,11 @@ select count(*) from test_range_spgist where ir &< int4range(100,500);
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select count(*) from test_range_spgist where ir &> int4range(100,500);
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select count(*) from test_range_spgist where ir -|- int4range(100,500);
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-- test index-only scans
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explain (costs off)
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select ir from test_range_spgist where ir -|- int4range(10,20) order by ir;
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select ir from test_range_spgist where ir -|- int4range(10,20) order by ir;
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RESET enable_seqscan;
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RESET enable_indexscan;
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RESET enable_bitmapscan;
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