Limit max probes [skip ci]

Makefile

@@ -4,8 +4,8 @@ EXTVERSION = 0.7.4
 MODULE_big = vector
 DATA = $(wildcard sql/*--*--*.sql)
 DATA_built = sql/$(EXTENSION)--$(EXTVERSION).sql
-OBJS = src/bitutils.o src/bitvec.o src/halfutils.o src/halfvec.o src/hnsw.o src/hnswbuild.o src/hnswinsert.o src/hnswscan.o src/hnswutils.o src/hnswvacuum.o src/ivfbuild.o src/ivfflat.o src/ivfinsert.o src/ivfkmeans.o src/ivfscan.o src/ivfutils.o src/minivec.o src/ivfvacuum.o src/sparsevec.o src/vector.o
-HEADERS = src/halfvec.h src/minivec.h src/sparsevec.h src/vector.h
+OBJS = src/bitutils.o src/bitvec.o src/halfutils.o src/halfvec.o src/hnsw.o src/hnswbuild.o src/hnswinsert.o src/hnswscan.o src/hnswutils.o src/hnswvacuum.o src/ivfbuild.o src/ivfflat.o src/ivfinsert.o src/ivfkmeans.o src/ivfscan.o src/ivfutils.o src/ivfvacuum.o src/sparsevec.o src/vector.o
+HEADERS = src/halfvec.h src/sparsevec.h src/vector.h
 
 TESTS = $(wildcard test/sql/*.sql)
 REGRESS = $(patsubst test/sql/%.sql,%,$(TESTS))

Makefile.win

@@ -2,10 +2,10 @@ EXTENSION = vector
 EXTVERSION = 0.7.4
 
 DATA_built = sql\$(EXTENSION)--$(EXTVERSION).sql
-OBJS = src\bitutils.obj src\bitvec.obj src\halfutils.obj src\halfvec.obj src\hnsw.obj src\hnswbuild.obj src\hnswinsert.obj src\hnswscan.obj src\hnswutils.obj src\hnswvacuum.obj src\ivfbuild.obj src\ivfflat.obj src\ivfinsert.obj src\ivfkmeans.obj src\ivfscan.obj src\ivfutils.obj src\ivfvacuum.obj src\minivec.obj src\sparsevec.obj src\vector.obj
-HEADERS = src\halfvec.h src\minivec.h src\sparsevec.h src\vector.h
+OBJS = src\bitutils.obj src\bitvec.obj src\halfutils.obj src\halfvec.obj src\hnsw.obj src\hnswbuild.obj src\hnswinsert.obj src\hnswscan.obj src\hnswutils.obj src\hnswvacuum.obj src\ivfbuild.obj src\ivfflat.obj src\ivfinsert.obj src\ivfkmeans.obj src\ivfscan.obj src\ivfutils.obj src\ivfvacuum.obj src\sparsevec.obj src\vector.obj
+HEADERS = src\halfvec.h src\sparsevec.h src\vector.h
 
-REGRESS = bit btree cast copy halfvec hnsw_bit hnsw_halfvec hnsw_sparsevec hnsw_vector ivfflat_bit ivfflat_halfvec ivfflat_vector minivec sparsevec vector_type
+REGRESS = bit btree cast copy halfvec hnsw_bit hnsw_halfvec hnsw_sparsevec hnsw_vector ivfflat_bit ivfflat_halfvec ivfflat_vector sparsevec vector_type
 REGRESS_OPTS = --inputdir=test --load-extension=$(EXTENSION)
 
 # For /arch flags

README.md

@@ -934,37 +934,6 @@ Function | Description | Added
 avg(halfvec) → halfvec | average | 0.7.0
 sum(halfvec) → halfvec | sum | 0.7.0
 
-### Minivec Type
-
-Each mini vector takes `dimensions + 8` bytes of storage. Each element is a E4M3 8-bit floating-point number, and all elements must be finite (no `NaN`). Mini vectors can have up to 16,000 dimensions.
-
-### Minivec Operators
-
-Operator | Description | Added
---- | --- | ---
-\+ | element-wise addition | 0.8.0
-\- | element-wise subtraction | 0.8.0
-\* | element-wise multiplication | 0.8.0
-\|\| | concatenate | 0.8.0
-<-> | Euclidean distance | 0.8.0
-<#> | negative inner product | 0.8.0
-<=> | cosine distance | 0.8.0
-<+> | taxicab distance | 0.8.0
-
-### Minivec Functions
-
-Function | Description | Added
---- | --- | ---
-binary_quantize(minivec) → bit | binary quantize | 0.8.0
-cosine_distance(minivec, minivec) → double precision | cosine distance | 0.8.0
-inner_product(minivec, minivec) → double precision | inner product | 0.8.0
-l1_distance(minivec, minivec) → double precision | taxicab distance | 0.8.0
-l2_distance(minivec, minivec) → double precision | Euclidean distance | 0.8.0
-l2_norm(minivec) → double precision | Euclidean norm | 0.8.0
-l2_normalize(minivec) → minivec | Normalize with Euclidean norm | 0.8.0
-subvector(minivec, integer, integer) → minivec | subvector | 0.8.0
-vector_dims(minivec) → integer | number of dimensions | 0.8.0
-
 ### Bit Type
 
 Each bit vector takes `dimensions / 8 + 8` bytes of storage. See the [Postgres docs](https://www.postgresql.org/docs/current/datatype-bit.html) for more info.

sql/vector--0.7.4--0.8.0.sql

@@ -1,8 +1,6 @@
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "ALTER EXTENSION vector UPDATE TO '0.8.0'" to load this file. \quit
 
--- TODO minivec functions
-
 CREATE FUNCTION array_to_sparsevec(integer[], integer, boolean) RETURNS sparsevec
 	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 

sql/vector.sql

@@ -272,9 +272,6 @@ CREATE FUNCTION ivfflat_bit_support(internal) RETURNS internal
 CREATE FUNCTION hnsw_halfvec_support(internal) RETURNS internal
 	AS 'MODULE_PATHNAME' LANGUAGE C;
 
-CREATE FUNCTION hnsw_minivec_support(internal) RETURNS internal
-	AS 'MODULE_PATHNAME' LANGUAGE C;
-
 CREATE FUNCTION hnsw_bit_support(internal) RETURNS internal
 	AS 'MODULE_PATHNAME' LANGUAGE C;
 
@@ -650,268 +647,6 @@ CREATE OPERATOR CLASS halfvec_l1_ops
 	FUNCTION 1 l1_distance(halfvec, halfvec),
 	FUNCTION 3 hnsw_halfvec_support(internal);
 
--- minivec type
-
-CREATE TYPE minivec;
-
-CREATE FUNCTION minivec_in(cstring, oid, integer) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_out(minivec) RETURNS cstring
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_typmod_in(cstring[]) RETURNS integer
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_recv(internal, oid, integer) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_send(minivec) RETURNS bytea
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE TYPE minivec (
-	INPUT     = minivec_in,
-	OUTPUT    = minivec_out,
-	TYPMOD_IN = minivec_typmod_in,
-	RECEIVE   = minivec_recv,
-	SEND      = minivec_send,
-	STORAGE   = external
-);
-
--- minivec functions
-
-CREATE FUNCTION l2_distance(minivec, minivec) RETURNS float8
-	AS 'MODULE_PATHNAME', 'minivec_l2_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION inner_product(minivec, minivec) RETURNS float8
-	AS 'MODULE_PATHNAME', 'minivec_inner_product' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION cosine_distance(minivec, minivec) RETURNS float8
-	AS 'MODULE_PATHNAME', 'minivec_cosine_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION l1_distance(minivec, minivec) RETURNS float8
-	AS 'MODULE_PATHNAME', 'minivec_l1_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION vector_dims(minivec) RETURNS integer
-	AS 'MODULE_PATHNAME', 'minivec_vector_dims' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION l2_norm(minivec) RETURNS float8
-	AS 'MODULE_PATHNAME', 'minivec_l2_norm' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION l2_normalize(minivec) RETURNS minivec
-	AS 'MODULE_PATHNAME', 'minivec_l2_normalize' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION binary_quantize(minivec) RETURNS bit
-	AS 'MODULE_PATHNAME', 'minivec_binary_quantize' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION subvector(minivec, int, int) RETURNS minivec
-	AS 'MODULE_PATHNAME', 'minivec_subvector' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
--- minivec private functions
-
-CREATE FUNCTION minivec_add(minivec, minivec) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_sub(minivec, minivec) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_mul(minivec, minivec) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_concat(minivec, minivec) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_lt(minivec, minivec) RETURNS bool
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_le(minivec, minivec) RETURNS bool
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_eq(minivec, minivec) RETURNS bool
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_ne(minivec, minivec) RETURNS bool
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_ge(minivec, minivec) RETURNS bool
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_gt(minivec, minivec) RETURNS bool
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_cmp(minivec, minivec) RETURNS int4
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_l2_squared_distance(minivec, minivec) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_negative_inner_product(minivec, minivec) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
--- minivec cast functions
-
-CREATE FUNCTION minivec(minivec, integer, boolean) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_to_vector(minivec, integer, boolean) RETURNS vector
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION vector_to_minivec(vector, integer, boolean) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION array_to_minivec(integer[], integer, boolean) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION array_to_minivec(real[], integer, boolean) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION array_to_minivec(double precision[], integer, boolean) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION array_to_minivec(numeric[], integer, boolean) RETURNS minivec
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION minivec_to_float4(minivec, integer, boolean) RETURNS real[]
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
--- minivec casts
-
-CREATE CAST (minivec AS minivec)
-	WITH FUNCTION minivec(minivec, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (minivec AS vector)
-	WITH FUNCTION minivec_to_vector(minivec, integer, boolean) AS ASSIGNMENT;
-
-CREATE CAST (vector AS minivec)
-	WITH FUNCTION vector_to_minivec(vector, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (minivec AS real[])
-	WITH FUNCTION minivec_to_float4(minivec, integer, boolean) AS ASSIGNMENT;
-
-CREATE CAST (integer[] AS minivec)
-	WITH FUNCTION array_to_minivec(integer[], integer, boolean) AS ASSIGNMENT;
-
-CREATE CAST (real[] AS minivec)
-	WITH FUNCTION array_to_minivec(real[], integer, boolean) AS ASSIGNMENT;
-
-CREATE CAST (double precision[] AS minivec)
-	WITH FUNCTION array_to_minivec(double precision[], integer, boolean) AS ASSIGNMENT;
-
-CREATE CAST (numeric[] AS minivec)
-	WITH FUNCTION array_to_minivec(numeric[], integer, boolean) AS ASSIGNMENT;
-
--- minivec operators
-
-CREATE OPERATOR <-> (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = l2_distance,
-	COMMUTATOR = '<->'
-);
-
-CREATE OPERATOR <#> (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_negative_inner_product,
-	COMMUTATOR = '<#>'
-);
-
-CREATE OPERATOR <=> (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = cosine_distance,
-	COMMUTATOR = '<=>'
-);
-
-CREATE OPERATOR <+> (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = l1_distance,
-	COMMUTATOR = '<+>'
-);
-
-CREATE OPERATOR + (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_add,
-	COMMUTATOR = +
-);
-
-CREATE OPERATOR - (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_sub
-);
-
-CREATE OPERATOR * (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_mul,
-	COMMUTATOR = *
-);
-
-CREATE OPERATOR || (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_concat
-);
-
-CREATE OPERATOR < (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_lt,
-	COMMUTATOR = > , NEGATOR = >= ,
-	RESTRICT = scalarltsel, JOIN = scalarltjoinsel
-);
-
-CREATE OPERATOR <= (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_le,
-	COMMUTATOR = >= , NEGATOR = > ,
-	RESTRICT = scalarlesel, JOIN = scalarlejoinsel
-);
-
-CREATE OPERATOR = (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_eq,
-	COMMUTATOR = = , NEGATOR = <> ,
-	RESTRICT = eqsel, JOIN = eqjoinsel
-);
-
-CREATE OPERATOR <> (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_ne,
-	COMMUTATOR = <> , NEGATOR = = ,
-	RESTRICT = eqsel, JOIN = eqjoinsel
-);
-
-CREATE OPERATOR >= (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_ge,
-	COMMUTATOR = <= , NEGATOR = < ,
-	RESTRICT = scalargesel, JOIN = scalargejoinsel
-);
-
-CREATE OPERATOR > (
-	LEFTARG = minivec, RIGHTARG = minivec, PROCEDURE = minivec_gt,
-	COMMUTATOR = < , NEGATOR = <= ,
-	RESTRICT = scalargtsel, JOIN = scalargtjoinsel
-);
-
--- minivec op classes
-
-CREATE OPERATOR CLASS minivec_ops
-	DEFAULT FOR TYPE minivec USING btree AS
-	OPERATOR 1 < ,
-	OPERATOR 2 <= ,
-	OPERATOR 3 = ,
-	OPERATOR 4 >= ,
-	OPERATOR 5 > ,
-	FUNCTION 1 minivec_cmp(minivec, minivec);
-
-CREATE OPERATOR CLASS minivec_l2_ops
-	FOR TYPE minivec USING hnsw AS
-	OPERATOR 1 <-> (minivec, minivec) FOR ORDER BY float_ops,
-	FUNCTION 1 minivec_l2_squared_distance(minivec, minivec),
-	FUNCTION 3 hnsw_minivec_support(internal);
-
-CREATE OPERATOR CLASS minivec_ip_ops
-	FOR TYPE minivec USING hnsw AS
-	OPERATOR 1 <#> (minivec, minivec) FOR ORDER BY float_ops,
-	FUNCTION 1 minivec_negative_inner_product(minivec, minivec),
-	FUNCTION 3 hnsw_minivec_support(internal);
-
-CREATE OPERATOR CLASS minivec_cosine_ops
-	FOR TYPE minivec USING hnsw AS
-	OPERATOR 1 <=> (minivec, minivec) FOR ORDER BY float_ops,
-	FUNCTION 1 minivec_negative_inner_product(minivec, minivec),
-	FUNCTION 2 l2_norm(minivec),
-	FUNCTION 3 hnsw_minivec_support(internal);
-
-CREATE OPERATOR CLASS minivec_l1_ops
-	FOR TYPE minivec USING hnsw AS
-	OPERATOR 1 <+> (minivec, minivec) FOR ORDER BY float_ops,
-	FUNCTION 1 l1_distance(minivec, minivec),
-	FUNCTION 3 hnsw_minivec_support(internal);
-
 -- bit functions
 
 CREATE FUNCTION hamming_distance(bit, bit) RETURNS float8

src/halfvec.c

@@ -159,6 +159,24 @@ CheckStateArray(ArrayType *statearray, const char *caller)
 	return (float8 *) ARR_DATA_PTR(statearray);
 }
 
+#if PG_VERSION_NUM < 120003
+static pg_noinline void
+float_overflow_error(void)
+{
+	ereport(ERROR,
+			(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+			 errmsg("value out of range: overflow")));
+}
+
+static pg_noinline void
+float_underflow_error(void)
+{
+	ereport(ERROR,
+			(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+			 errmsg("value out of range: underflow")));
+}
+#endif
+
 /*
  * Convert textual representation to internal representation
  */

src/hnswutils.c

@@ -1327,7 +1327,6 @@ HnswFindElementNeighbors(char *base, HnswElement element, HnswElement entryPoint
 
 PGDLLEXPORT Datum l2_normalize(PG_FUNCTION_ARGS);
 PGDLLEXPORT Datum halfvec_l2_normalize(PG_FUNCTION_ARGS);
-PGDLLEXPORT Datum minivec_l2_normalize(PG_FUNCTION_ARGS);
 PGDLLEXPORT Datum sparsevec_l2_normalize(PG_FUNCTION_ARGS);
 
 static void
@@ -1376,19 +1375,6 @@ hnsw_halfvec_support(PG_FUNCTION_ARGS)
 	PG_RETURN_POINTER(&typeInfo);
 };
 
-FUNCTION_PREFIX PG_FUNCTION_INFO_V1(hnsw_minivec_support);
-Datum
-hnsw_minivec_support(PG_FUNCTION_ARGS)
-{
-	static const HnswTypeInfo typeInfo = {
-		.maxDimensions = HNSW_MAX_DIM * 4,
-		.normalize = minivec_l2_normalize,
-		.checkValue = NULL
-	};
-
-	PG_RETURN_POINTER(&typeInfo);
-};
-
 FUNCTION_PREFIX PG_FUNCTION_INFO_V1(hnsw_bit_support);
 Datum
 hnsw_bit_support(PG_FUNCTION_ARGS)

src/ivfflat.c

@@ -17,6 +17,8 @@
 #endif
 
 int			ivfflat_probes;
+int			ivfflat_max_probes;
+bool		ivfflat_streaming;
 static relopt_kind ivfflat_relopt_kind;
 
 /*
@@ -33,6 +35,14 @@ IvfflatInit(void)
 							"Valid range is 1..lists.", &ivfflat_probes,
 							IVFFLAT_DEFAULT_PROBES, IVFFLAT_MIN_LISTS, IVFFLAT_MAX_LISTS, PGC_USERSET, 0, NULL, NULL, NULL);
 
+	DefineCustomIntVariable("ivfflat.max_probes", "Sets the max number of probes for iterative scans",
+							NULL, &ivfflat_max_probes,
+							-1, IVFFLAT_MIN_LISTS, IVFFLAT_MAX_LISTS, PGC_USERSET, 0, NULL, NULL, NULL);
+
+	DefineCustomBoolVariable("ivfflat.streaming", "Use streaming mode",
+							 NULL, &ivfflat_streaming,
+							 IVFFLAT_DEFAULT_STREAMING, PGC_USERSET, 0, NULL, NULL, NULL);
+
 	MarkGUCPrefixReserved("ivfflat");
 }
 
@@ -57,6 +67,35 @@ ivfflatbuildphasename(int64 phasenum)
 	}
 }
 
+/*
+ * Estimate the number of probes for iterative scans
+ */
+static int
+EstimateProbes(PlannerInfo *root, IndexPath *path, int lists)
+{
+	double		selectivity = 1;
+	ListCell   *lc;
+	double		tuplesPerList;
+
+	/* Cannot estimate without limit */
+	/* limit_tuples includes offset */
+	if (root->limit_tuples < 0)
+		return 0;
+
+	/* Get the selectivity of non-index conditions */
+	foreach(lc, path->indexinfo->indrestrictinfo)
+	{
+		RestrictInfo *rinfo = lfirst(lc);
+
+		/* Skip DEFAULT_INEQ_SEL since it may be a distance filter */
+		if (rinfo->norm_selec >= 0 && rinfo->norm_selec <= 1 && rinfo->norm_selec != (Selectivity) DEFAULT_INEQ_SEL)
+			selectivity *= rinfo->norm_selec;
+	}
+
+	tuplesPerList = path->indexinfo->tuples / (double) lists;
+	return root->limit_tuples / (tuplesPerList * selectivity);
+}
+
 /*
  * Estimate the cost of an index scan
  */
@@ -68,6 +107,7 @@ ivfflatcostestimate(PlannerInfo *root, IndexPath *path, double loop_count,
 {
 	GenericCosts costs;
 	int			lists;
+	int			probes;
 	double		ratio;
 	double		spc_seq_page_cost;
 	Relation	index;
@@ -89,8 +129,17 @@ ivfflatcostestimate(PlannerInfo *root, IndexPath *path, double loop_count,
 	IvfflatGetMetaPageInfo(index, &lists, NULL);
 	index_close(index, NoLock);
 
+	probes = ivfflat_probes;
+	if (ivfflat_streaming)
+	{
+		probes = Max(probes, EstimateProbes(root, path, lists));
+
+		if (ivfflat_max_probes != -1)
+			probes = Min(probes, ivfflat_max_probes);
+	}
+
 	/* Get the ratio of lists that we need to visit */
-	ratio = ((double) ivfflat_probes) / lists;
+	ratio = ((double) probes) / lists;
 	if (ratio > 1.0)
 		ratio = 1.0;
 

src/ivfflat.h

@@ -43,6 +43,7 @@
 #define IVFFLAT_MIN_LISTS		1
 #define IVFFLAT_MAX_LISTS		32768
 #define IVFFLAT_DEFAULT_PROBES	1
+#define IVFFLAT_DEFAULT_STREAMING	false
 
 /* Build phases */
 /* PROGRESS_CREATEIDX_SUBPHASE_INITIALIZE is 1 */
@@ -80,6 +81,8 @@
 
 /* Variables */
 extern int	ivfflat_probes;
+extern int	ivfflat_max_probes;
+extern bool ivfflat_streaming;
 
 typedef struct VectorArrayData
 {
@@ -247,8 +250,10 @@ typedef struct IvfflatScanOpaqueData
 {
 	const		IvfflatTypeInfo *typeInfo;
 	int			probes;
+	int			maxProbes;
 	int			dimensions;
 	bool		first;
+	Datum		value;
 
 	/* Sorting */
 	Tuplesortstate *sortstate;
@@ -265,6 +270,8 @@ typedef struct IvfflatScanOpaqueData
 
 	/* Lists */
 	pairingheap *listQueue;
+	BlockNumber *startPages;
+	int			currentIndex;
 	IvfflatScanList lists[FLEXIBLE_ARRAY_MEMBER];	/* must come last */
 }			IvfflatScanOpaqueData;
 

src/ivfscan.c

@@ -65,7 +65,7 @@ GetScanLists(IndexScanDesc scan, Datum value)
 			/* Use procinfo from the index instead of scan key for performance */
 			distance = DatumGetFloat8(so->distfunc(so->procinfo, so->collation, PointerGetDatum(&list->center), value));
 
-			if (listCount < so->probes)
+			if (listCount < so->maxProbes)
 			{
 				IvfflatScanList *scanlist;
 
@@ -102,6 +102,11 @@ GetScanLists(IndexScanDesc scan, Datum value)
 
 		UnlockReleaseBuffer(cbuf);
 	}
+
+	for (int i = listCount - 1; i >= 0; i--)
+		so->startPages[i] = GetScanList(pairingheap_remove_first(so->listQueue))->startPage;
+
+	Assert(pairingheap_is_empty(so->listQueue));
 }
 
 /*
@@ -114,11 +119,14 @@ GetScanItems(IndexScanDesc scan, Datum value)
 	TupleDesc	tupdesc = RelationGetDescr(scan->indexRelation);
 	double		tuples = 0;
 	TupleTableSlot *slot = so->vslot;
+	int			batchProbes = 0;
+
+	tuplesort_reset(so->sortstate);
 
 	/* Search closest probes lists */
-	while (!pairingheap_is_empty(so->listQueue))
+	while (so->currentIndex < so->maxProbes && (++batchProbes) <= so->probes)
 	{
-		BlockNumber searchPage = GetScanList(pairingheap_remove_first(so->listQueue))->startPage;
+		BlockNumber searchPage = so->startPages[so->currentIndex++];
 
 		/* Search all entry pages for list */
 		while (BlockNumberIsValid(searchPage))
@@ -166,13 +174,17 @@ GetScanItems(IndexScanDesc scan, Datum value)
 		}
 	}
 
-	if (tuples < 100)
+	if (tuples < 100 && !ivfflat_streaming)
 		ereport(DEBUG1,
 				(errmsg("index scan found few tuples"),
 				 errdetail("Index may have been created with little data."),
 				 errhint("Recreate the index and possibly decrease lists.")));
 
 	tuplesort_performsort(so->sortstate);
+
+#if defined(IVFFLAT_MEMORY)
+	elog(INFO, "memory: %zu MB", MemoryContextMemAllocated(CurrentMemoryContext, true) / (1024 * 1024));
+#endif
 }
 
 /*
@@ -240,6 +252,7 @@ ivfflatbeginscan(Relation index, int nkeys, int norderbys)
 	int			lists;
 	int			dimensions;
 	int			probes = ivfflat_probes;
+	int			maxProbes;
 
 	scan = RelationGetIndexScan(index, nkeys, norderbys);
 
@@ -249,10 +262,21 @@ ivfflatbeginscan(Relation index, int nkeys, int norderbys)
 	if (probes > lists)
 		probes = lists;
 
-	so = (IvfflatScanOpaque) palloc(offsetof(IvfflatScanOpaqueData, lists) + probes * sizeof(IvfflatScanList));
+	if (ivfflat_streaming)
+	{
+		if (ivfflat_max_probes == -1)
+			maxProbes = lists;
+		else
+			maxProbes = Min(ivfflat_max_probes, lists);
+	}
+	else
+		maxProbes = probes;
+
+	so = (IvfflatScanOpaque) palloc(offsetof(IvfflatScanOpaqueData, lists) + maxProbes * sizeof(IvfflatScanList));
 	so->typeInfo = IvfflatGetTypeInfo(index);
 	so->first = true;
 	so->probes = probes;
+	so->maxProbes = maxProbes;
 	so->dimensions = dimensions;
 
 	/* Set support functions */
@@ -280,6 +304,8 @@ ivfflatbeginscan(Relation index, int nkeys, int norderbys)
 	so->bas = GetAccessStrategy(BAS_BULKREAD);
 
 	so->listQueue = pairingheap_allocate(CompareLists, scan);
+	so->startPages = palloc(maxProbes * sizeof(BlockNumber));
+	so->currentIndex = 0;
 
 	scan->opaque = so;
 
@@ -294,11 +320,9 @@ ivfflatrescan(IndexScanDesc scan, ScanKey keys, int nkeys, ScanKey orderbys, int
 {
 	IvfflatScanOpaque so = (IvfflatScanOpaque) scan->opaque;
 
-	if (!so->first)
-		tuplesort_reset(so->sortstate);
-
 	so->first = true;
 	pairingheap_reset(so->listQueue);
+	so->currentIndex = 0;
 
 	if (keys && scan->numberOfKeys > 0)
 		memmove(scan->keyData, keys, scan->numberOfKeys * sizeof(ScanKeyData));
@@ -314,6 +338,8 @@ bool
 ivfflatgettuple(IndexScanDesc scan, ScanDirection dir)
 {
 	IvfflatScanOpaque so = (IvfflatScanOpaque) scan->opaque;
+	ItemPointer heaptid;
+	bool		isnull;
 
 	/*
 	 * Index can be used to scan backward, but Postgres doesn't support
@@ -341,28 +367,25 @@ ivfflatgettuple(IndexScanDesc scan, ScanDirection dir)
 		IvfflatBench("GetScanLists", GetScanLists(scan, value));
 		IvfflatBench("GetScanItems", GetScanItems(scan, value));
 		so->first = false;
+		so->value = value;
 
-#if defined(IVFFLAT_MEMORY)
-		elog(INFO, "memory: %zu MB", MemoryContextMemAllocated(CurrentMemoryContext, true) / (1024 * 1024));
-#endif
-
-		/* Clean up if we allocated a new value */
-		if (value != scan->orderByData->sk_argument)
-			pfree(DatumGetPointer(value));
+		/* TODO clean up if we allocated a new value */
 	}
 
-	if (tuplesort_gettupleslot(so->sortstate, true, false, so->mslot, NULL))
+	while (!tuplesort_gettupleslot(so->sortstate, true, false, so->mslot, NULL))
 	{
-		bool		isnull;
-		ItemPointer heaptid = (ItemPointer) DatumGetPointer(slot_getattr(so->mslot, 2, &isnull));
+		if (so->currentIndex == so->maxProbes)
+			return false;
+
+		IvfflatBench("GetScanItems", GetScanItems(scan, so->value));
+	}
+
+	heaptid = (ItemPointer) DatumGetPointer(slot_getattr(so->mslot, 2, &isnull));
 
 	scan->xs_heaptid = *heaptid;
 	scan->xs_recheck = false;
 	scan->xs_recheckorderby = false;
 	return true;
-	}
-
-	return false;
 }
 
 /*
@@ -374,6 +397,7 @@ ivfflatendscan(IndexScanDesc scan)
 	IvfflatScanOpaque so = (IvfflatScanOpaque) scan->opaque;
 
 	pairingheap_free(so->listQueue);
+	pfree(so->startPages);
 	tuplesort_end(so->sortstate);
 	FreeAccessStrategy(so->bas);
 	FreeTupleDesc(so->tupdesc);

src/minivec.h

@@ -1,156 +0,0 @@
-#ifndef MINIVEC_H
-#define MINIVEC_H
-
-#include <float.h>
-
-#define MINIVEC_MAX_DIM 16000
-
-#define fp8 uint8
-
-#define MINIVEC_SIZE(_dim)		(offsetof(MiniVector, x) + sizeof(fp8)*(_dim))
-#define DatumGetMiniVector(x)		((MiniVector *) PG_DETOAST_DATUM(x))
-#define PG_GETARG_MINIVEC_P(x)	DatumGetMiniVector(PG_GETARG_DATUM(x))
-#define PG_RETURN_MINIVEC_P(x)	PG_RETURN_POINTER(x)
-
-typedef struct MiniVector
-{
-	int32		vl_len_;		/* varlena header (do not touch directly!) */
-	int16		dim;			/* number of dimensions */
-	int16		unused;			/* reserved for future use, always zero */
-	fp8			x[FLEXIBLE_ARRAY_MEMBER];
-}			MiniVector;
-
-MiniVector *InitMiniVector(int dim);
-
-/*
- * Check if fp8 is NaN
- */
-static inline bool
-Fp8IsNan(fp8 num)
-{
-	return (num & 0x7F) == 0x7F;
-}
-
-/*
- * Check if fp8 is zero
- */
-static inline bool
-Fp8IsZero(fp8 num)
-{
-	return num == 0;
-}
-
-/*
- * Convert a fp8 to a float4
- */
-static inline float
-Fp8ToFloat4(fp8 num)
-{
-	float		lookup[128] = {0, 0.00195312, 0.00390625, 0.00585938, 0.0078125, 0.00976562, 0.0117188, 0.0136719, 0.015625, 0.0175781, 0.0195312, 0.0214844, 0.0234375, 0.0253906, 0.0273438, 0.0292969, 0.03125, 0.0351562, 0.0390625, 0.0429688, 0.046875, 0.0507812, 0.0546875, 0.0585938, 0.0625, 0.0703125, 0.078125, 0.0859375, 0.09375, 0.101562, 0.109375, 0.117188, 0.125, 0.140625, 0.15625, 0.171875, 0.1875, 0.203125, 0.21875, 0.234375, 0.25, 0.28125, 0.3125, 0.34375, 0.375, 0.40625, 0.4375, 0.46875, 0.5, 0.5625, 0.625, 0.6875, 0.75, 0.8125, 0.875, 0.9375, 1, 1.125, 1.25, 1.375, 1.5, 1.625, 1.75, 1.875, 2, 2.25, 2.5, 2.75, 3, 3.25, 3.5, 3.75, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 28, 30, 32, 36, 40, 44, 48, 52, 56, 60, 64, 72, 80, 88, 96, 104, 112, 120, 128, 144, 160, 176, 192, 208, 224, 240, 256, 288, 320, 352, 384, 416, 448, NAN};
-	float		v = lookup[num & 0x7F];
-
-	return (num & 0x80) == 0x80 ? -v : v;
-}
-
-/*
- * Convert a float4 to a fp8
- */
-static inline fp8
-Float4ToFp8Unchecked(float num)
-{
-	union
-	{
-		float		f;
-		uint32		i;
-	}			swapfloat;
-
-	uint32		bin;
-	int			exponent;
-	int			mantissa;
-	uint8		result;
-
-	swapfloat.f = num;
-	bin = swapfloat.i;
-	exponent = (bin & 0x7F800000) >> 23;
-	mantissa = bin & 0x007FFFFF;
-
-	/* Sign */
-	result = (bin & 0x80000000) >> 24;
-
-	if (isinf(num) || isnan(num))
-	{
-		/* NaN */
-		result |= 0x7F;
-	}
-	else if (exponent > 116)
-	{
-		int			m;
-		int			gr;
-		int			s;
-
-		exponent -= 127;
-		s = mantissa & 0x000FFFFF;
-
-		/* Subnormal */
-		if (exponent < -6)
-		{
-			int			diff = -exponent - 6;
-
-			mantissa >>= diff;
-			mantissa += 1 << (23 - diff);
-			s |= mantissa & 0x000FFFFF;
-		}
-
-		m = mantissa >> 20;
-
-		/* Round */
-		gr = (mantissa >> 19) % 4;
-		if (gr == 3 || (gr == 1 && s != 0))
-			m += 1;
-
-		if (m == 8)
-		{
-			m = 0;
-			exponent += 1;
-		}
-
-		if (exponent > 8)
-		{
-			/* Infinite, which is NaN */
-			result |= 0x7F;
-		}
-		else
-		{
-			if (exponent >= -7)
-				result |= (exponent + 7) << 3;
-
-			result |= m;
-		}
-	}
-
-	return result;
-}
-
-/*
- * Convert a float4 to a fp8
- */
-static inline fp8
-Float4ToFp8(float num)
-{
-	fp8			result = Float4ToFp8Unchecked(num);
-
-	if (unlikely(Fp8IsNan(result)) && !isnan(num))
-	{
-		char	   *buf = palloc(FLOAT_SHORTEST_DECIMAL_LEN);
-
-		float_to_shortest_decimal_buf(num, buf);
-
-		ereport(ERROR,
-				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
-				 errmsg("\"%s\" is out of range for type minivec", buf)));
-	}
-
-	return result;
-}
-
-#endif

src/vector.c

@@ -13,7 +13,6 @@
 #include "ivfflat.h"
 #include "lib/stringinfo.h"
 #include "libpq/pqformat.h"
-#include "minivec.h"
 #include "port.h"				/* for strtof() */
 #include "sparsevec.h"
 #include "utils/array.h"
@@ -156,6 +155,24 @@ CheckStateArray(ArrayType *statearray, const char *caller)
 	return (float8 *) ARR_DATA_PTR(statearray);
 }
 
+#if PG_VERSION_NUM < 120003
+static pg_noinline void
+float_overflow_error(void)
+{
+	ereport(ERROR,
+			(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+			 errmsg("value out of range: overflow")));
+}
+
+static pg_noinline void
+float_underflow_error(void)
+{
+	ereport(ERROR,
+			(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+			 errmsg("value out of range: underflow")));
+}
+#endif
+
 /*
  * Convert textual representation to internal representation
  */
@@ -543,28 +560,6 @@ halfvec_to_vector(PG_FUNCTION_ARGS)
 	PG_RETURN_POINTER(result);
 }
 
-/*
- * Convert fp8 vector to vector
- */
-FUNCTION_PREFIX PG_FUNCTION_INFO_V1(minivec_to_vector);
-Datum
-minivec_to_vector(PG_FUNCTION_ARGS)
-{
-	MiniVector *vec = PG_GETARG_MINIVEC_P(0);
-	int32		typmod = PG_GETARG_INT32(1);
-	Vector	   *result;
-
-	CheckDim(vec->dim);
-	CheckExpectedDim(typmod, vec->dim);
-
-	result = InitVector(vec->dim);
-
-	for (int i = 0; i < vec->dim; i++)
-		result->x[i] = Fp8ToFloat4(vec->x[i]);
-
-	PG_RETURN_POINTER(result);
-}
-
 VECTOR_TARGET_CLONES static float
 VectorL2SquaredDistance(int dim, float *ax, float *bx)
 {

test/expected/btree.out

@@ -38,26 +38,6 @@ SELECT * FROM t ORDER BY val;
  
 (4 rows)
 
-DROP TABLE t;
--- minivec
-CREATE TABLE t (val minivec(3));
-INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
-CREATE INDEX ON t (val);
-SELECT * FROM t WHERE val = '[1,2,3]';
-   val   
----------
- [1,2,3]
-(1 row)
-
-SELECT * FROM t ORDER BY val;
-   val   
----------
- [0,0,0]
- [1,1,1]
- [1,2,3]
- 
-(4 rows)
-
 DROP TABLE t;
 -- sparsevec
 CREATE TABLE t (val sparsevec(3));

test/expected/cast.out

@@ -140,64 +140,6 @@ SELECT '{1e-8,-1e-8}'::real[]::halfvec;
  [0,-0]
 (1 row)
 
-SELECT '[1,2,3]'::vector::minivec;
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '[1,2,3]'::vector::minivec(3);
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '[1,2,3]'::vector::minivec(2);
-ERROR:  expected 2 dimensions, not 3
-SELECT '[465]'::vector::minivec;
-ERROR:  "465" is out of range for type minivec
-SELECT '[1e-8]'::vector::minivec;
- minivec 
----------
- [0]
-(1 row)
-
-SELECT '[1,2,3]'::minivec::vector;
- vector  
----------
- [1,2,3]
-(1 row)
-
-SELECT '[1,2,3]'::minivec::vector(3);
- vector  
----------
- [1,2,3]
-(1 row)
-
-SELECT '[1,2,3]'::minivec::vector(2);
-ERROR:  expected 2 dimensions, not 3
-SELECT '{1,2,3}'::real[]::minivec;
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '{1,2,3}'::real[]::minivec(3);
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '{1,2,3}'::real[]::minivec(2);
-ERROR:  expected 2 dimensions, not 3
-SELECT '{465,-465}'::real[]::minivec;
-ERROR:  "465" is out of range for type minivec
-SELECT '{1e-8,-1e-8}'::real[]::minivec;
- minivec 
----------
- [0,-0]
-(1 row)
-
 SELECT '[0,1.5,0,3.5,0]'::vector::sparsevec;
     sparsevec    
 -----------------

test/expected/copy.out

@@ -30,23 +30,6 @@ SELECT * FROM t2 ORDER BY val;
  
 (4 rows)
 
-DROP TABLE t;
-DROP TABLE t2;
--- minivec
-CREATE TABLE t (val minivec(3));
-INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
-CREATE TABLE t2 (val minivec(3));
-\copy t TO 'results/minivec.bin' WITH (FORMAT binary)
-\copy t2 FROM 'results/minivec.bin' WITH (FORMAT binary)
-SELECT * FROM t2 ORDER BY val;
-   val   
----------
- [0,0,0]
- [1,1,1]
- [1,2,3]
- 
-(4 rows)
-
 DROP TABLE t;
 DROP TABLE t2;
 -- sparsevec

test/expected/minivec.out

@@ -1,588 +0,0 @@
-SELECT '[1,2,3]'::minivec;
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '[-1,-2,-3]'::minivec;
-  minivec   
-------------
- [-1,-2,-3]
-(1 row)
-
-SELECT '[1.,2.,3.]'::minivec;
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT ' [ 1,  2 ,    3  ] '::minivec;
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '[1.23456]'::minivec;
- minivec 
----------
- [1.25]
-(1 row)
-
-SELECT '[hello,1]'::minivec;
-ERROR:  invalid input syntax for type minivec: "[hello,1]"
-LINE 1: SELECT '[hello,1]'::minivec;
-               ^
-SELECT '[NaN,1]'::minivec;
-ERROR:  NaN not allowed in minivec
-LINE 1: SELECT '[NaN,1]'::minivec;
-               ^
-SELECT '[Infinity,1]'::minivec;
-ERROR:  "Infinity" is out of range for type minivec
-LINE 1: SELECT '[Infinity,1]'::minivec;
-               ^
-SELECT '[-Infinity,1]'::minivec;
-ERROR:  "-Infinity" is out of range for type minivec
-LINE 1: SELECT '[-Infinity,1]'::minivec;
-               ^
-SELECT '[65519,-65519]'::minivec;
-ERROR:  "65519" is out of range for type minivec
-LINE 1: SELECT '[65519,-65519]'::minivec;
-               ^
-SELECT '[65520,-65520]'::minivec;
-ERROR:  "65520" is out of range for type minivec
-LINE 1: SELECT '[65520,-65520]'::minivec;
-               ^
-SELECT '[1e-8,-1e-8]'::minivec;
- minivec 
----------
- [0,-0]
-(1 row)
-
-SELECT '[4e38,1]'::minivec;
-ERROR:  "4e38" is out of range for type minivec
-LINE 1: SELECT '[4e38,1]'::minivec;
-               ^
-SELECT '[1e-46,1]'::minivec;
- minivec 
----------
- [0,1]
-(1 row)
-
-SELECT '[1,2,3'::minivec;
-ERROR:  invalid input syntax for type minivec: "[1,2,3"
-LINE 1: SELECT '[1,2,3'::minivec;
-               ^
-SELECT '[1,2,3]9'::minivec;
-ERROR:  invalid input syntax for type minivec: "[1,2,3]9"
-LINE 1: SELECT '[1,2,3]9'::minivec;
-               ^
-DETAIL:  Junk after closing right brace.
-SELECT '1,2,3'::minivec;
-ERROR:  invalid input syntax for type minivec: "1,2,3"
-LINE 1: SELECT '1,2,3'::minivec;
-               ^
-DETAIL:  Vector contents must start with "[".
-SELECT ''::minivec;
-ERROR:  invalid input syntax for type minivec: ""
-LINE 1: SELECT ''::minivec;
-               ^
-DETAIL:  Vector contents must start with "[".
-SELECT '['::minivec;
-ERROR:  invalid input syntax for type minivec: "["
-LINE 1: SELECT '['::minivec;
-               ^
-SELECT '[ '::minivec;
-ERROR:  invalid input syntax for type minivec: "[ "
-LINE 1: SELECT '[ '::minivec;
-               ^
-SELECT '[,'::minivec;
-ERROR:  invalid input syntax for type minivec: "[,"
-LINE 1: SELECT '[,'::minivec;
-               ^
-SELECT '[]'::minivec;
-ERROR:  minivec must have at least 1 dimension
-LINE 1: SELECT '[]'::minivec;
-               ^
-SELECT '[ ]'::minivec;
-ERROR:  minivec must have at least 1 dimension
-LINE 1: SELECT '[ ]'::minivec;
-               ^
-SELECT '[,]'::minivec;
-ERROR:  invalid input syntax for type minivec: "[,]"
-LINE 1: SELECT '[,]'::minivec;
-               ^
-SELECT '[1,]'::minivec;
-ERROR:  invalid input syntax for type minivec: "[1,]"
-LINE 1: SELECT '[1,]'::minivec;
-               ^
-SELECT '[1a]'::minivec;
-ERROR:  invalid input syntax for type minivec: "[1a]"
-LINE 1: SELECT '[1a]'::minivec;
-               ^
-SELECT '[1,,3]'::minivec;
-ERROR:  invalid input syntax for type minivec: "[1,,3]"
-LINE 1: SELECT '[1,,3]'::minivec;
-               ^
-SELECT '[1, ,3]'::minivec;
-ERROR:  invalid input syntax for type minivec: "[1, ,3]"
-LINE 1: SELECT '[1, ,3]'::minivec;
-               ^
-SELECT '[1,2,3]'::minivec(3);
- minivec 
----------
- [1,2,3]
-(1 row)
-
-SELECT '[1,2,3]'::minivec(2);
-ERROR:  expected 2 dimensions, not 3
-SELECT '[1,2,3]'::minivec(3, 2);
-ERROR:  invalid type modifier
-LINE 1: SELECT '[1,2,3]'::minivec(3, 2);
-                          ^
-SELECT '[1,2,3]'::minivec('a');
-ERROR:  invalid input syntax for type integer: "a"
-LINE 1: SELECT '[1,2,3]'::minivec('a');
-                          ^
-SELECT '[1,2,3]'::minivec(0);
-ERROR:  dimensions for type minivec must be at least 1
-LINE 1: SELECT '[1,2,3]'::minivec(0);
-                          ^
-SELECT '[1,2,3]'::minivec(16001);
-ERROR:  dimensions for type minivec cannot exceed 16000
-LINE 1: SELECT '[1,2,3]'::minivec(16001);
-                          ^
-SELECT unnest('{"[1,2,3]", "[4,5,6]"}'::minivec[]);
- unnest  
----------
- [1,2,3]
- [4,5,6]
-(2 rows)
-
-SELECT '{"[1,2,3]"}'::minivec(2)[];
-ERROR:  expected 2 dimensions, not 3
-SELECT '[1,2,3]'::minivec + '[4,5,6]';
- ?column? 
-----------
- [5,7,9]
-(1 row)
-
-SELECT '[448]'::minivec + '[448]';
-ERROR:  value out of range: overflow
-SELECT '[1,2]'::minivec + '[3]';
-ERROR:  different minivec dimensions 2 and 1
-SELECT '[1,2,3]'::minivec - '[4,5,6]';
-  ?column?  
-------------
- [-3,-3,-3]
-(1 row)
-
-SELECT '[-448]'::minivec - '[448]';
-ERROR:  value out of range: overflow
-SELECT '[1,2]'::minivec - '[3]';
-ERROR:  different minivec dimensions 2 and 1
-SELECT '[1,2,3]'::minivec * '[4,5,6]';
- ?column?  
------------
- [4,10,18]
-(1 row)
-
-SELECT '[448]'::minivec * '[448]';
-ERROR:  value out of range: overflow
-SELECT '[1e-7]'::minivec * '[1e-7]';
- ?column? 
-----------
- [0]
-(1 row)
-
-SELECT '[1,2]'::minivec * '[3]';
-ERROR:  different minivec dimensions 2 and 1
-SELECT '[1,2,3]'::minivec || '[4,5]';
-  ?column?   
--------------
- [1,2,3,4,5]
-(1 row)
-
-SELECT array_fill(0, ARRAY[16000])::minivec || '[1]';
-ERROR:  minivec cannot have more than 16000 dimensions
-SELECT '[1,2,3]'::minivec < '[1,2,3]';
- ?column? 
-----------
- f
-(1 row)
-
-SELECT '[1,2,3]'::minivec < '[1,2]';
- ?column? 
-----------
- f
-(1 row)
-
-SELECT '[1,2,3]'::minivec <= '[1,2,3]';
- ?column? 
-----------
- t
-(1 row)
-
-SELECT '[1,2,3]'::minivec <= '[1,2]';
- ?column? 
-----------
- f
-(1 row)
-
-SELECT '[1,2,3]'::minivec = '[1,2,3]';
- ?column? 
-----------
- t
-(1 row)
-
-SELECT '[1,2,3]'::minivec = '[1,2]';
- ?column? 
-----------
- f
-(1 row)
-
-SELECT '[1,2,3]'::minivec != '[1,2,3]';
- ?column? 
-----------
- f
-(1 row)
-
-SELECT '[1,2,3]'::minivec != '[1,2]';
- ?column? 
-----------
- t
-(1 row)
-
-SELECT '[1,2,3]'::minivec >= '[1,2,3]';
- ?column? 
-----------
- t
-(1 row)
-
-SELECT '[1,2,3]'::minivec >= '[1,2]';
- ?column? 
-----------
- t
-(1 row)
-
-SELECT '[1,2,3]'::minivec > '[1,2,3]';
- ?column? 
-----------
- f
-(1 row)
-
-SELECT '[1,2,3]'::minivec > '[1,2]';
- ?column? 
-----------
- t
-(1 row)
-
-SELECT minivec_cmp('[1,2,3]', '[1,2,3]');
- minivec_cmp 
--------------
-           0
-(1 row)
-
-SELECT minivec_cmp('[1,2,3]', '[0,0,0]');
- minivec_cmp 
--------------
-           1
-(1 row)
-
-SELECT minivec_cmp('[0,0,0]', '[1,2,3]');
- minivec_cmp 
--------------
-          -1
-(1 row)
-
-SELECT minivec_cmp('[1,2]', '[1,2,3]');
- minivec_cmp 
--------------
-          -1
-(1 row)
-
-SELECT minivec_cmp('[1,2,3]', '[1,2]');
- minivec_cmp 
--------------
-           1
-(1 row)
-
-SELECT minivec_cmp('[1,2]', '[2,3,4]');
- minivec_cmp 
--------------
-          -1
-(1 row)
-
-SELECT minivec_cmp('[2,3]', '[1,2,3]');
- minivec_cmp 
--------------
-           1
-(1 row)
-
-SELECT vector_dims('[1,2,3]'::minivec);
- vector_dims 
--------------
-           3
-(1 row)
-
-SELECT round(l2_norm('[1,1]'::minivec)::numeric, 5);
-  round  
----------
- 1.41421
-(1 row)
-
-SELECT l2_norm('[3,4]'::minivec);
- l2_norm 
----------
-       5
-(1 row)
-
-SELECT l2_norm('[0,1]'::minivec);
- l2_norm 
----------
-       1
-(1 row)
-
-SELECT l2_norm('[0,0]'::minivec);
- l2_norm 
----------
-       0
-(1 row)
-
-SELECT l2_norm('[2]'::minivec);
- l2_norm 
----------
-       2
-(1 row)
-
-SELECT l2_distance('[0,0]'::minivec, '[3,4]');
- l2_distance 
--------------
-           5
-(1 row)
-
-SELECT l2_distance('[0,0]'::minivec, '[0,1]');
- l2_distance 
--------------
-           1
-(1 row)
-
-SELECT l2_distance('[1,2]'::minivec, '[3]');
-ERROR:  different minivec dimensions 2 and 1
-SELECT l2_distance('[1,1,1,1,1,1,1,1,1]'::minivec, '[1,1,1,1,1,1,1,4,5]');
- l2_distance 
--------------
-           5
-(1 row)
-
-SELECT '[0,0]'::minivec <-> '[3,4]';
- ?column? 
-----------
-        5
-(1 row)
-
-SELECT inner_product('[1,2]'::minivec, '[3,4]');
- inner_product 
----------------
-            11
-(1 row)
-
-SELECT inner_product('[1,2]'::minivec, '[3]');
-ERROR:  different minivec dimensions 2 and 1
-SELECT inner_product('[448]'::minivec, '[448]');
- inner_product 
----------------
-        200704
-(1 row)
-
-SELECT inner_product('[1,1,1,1,1,1,1,1,1]'::minivec, '[1,2,3,4,5,6,7,8,9]');
- inner_product 
----------------
-            45
-(1 row)
-
-SELECT '[1,2]'::minivec <#> '[3,4]';
- ?column? 
-----------
-      -11
-(1 row)
-
-SELECT cosine_distance('[1,2]'::minivec, '[2,4]');
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('[1,2]'::minivec, '[0,0]');
- cosine_distance 
------------------
-             NaN
-(1 row)
-
-SELECT cosine_distance('[1,1]'::minivec, '[1,1]');
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('[1,0]'::minivec, '[0,2]');
- cosine_distance 
------------------
-               1
-(1 row)
-
-SELECT cosine_distance('[1,1]'::minivec, '[-1,-1]');
- cosine_distance 
------------------
-               2
-(1 row)
-
-SELECT cosine_distance('[1,2]'::minivec, '[3]');
-ERROR:  different minivec dimensions 2 and 1
-SELECT cosine_distance('[1,1]'::minivec, '[1.1,1.1]');
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('[1,1]'::minivec, '[-1.1,-1.1]');
- cosine_distance 
------------------
-               2
-(1 row)
-
-SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[1,2,3,4,5,6,7,8,9]');
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[-1,-2,-3,-4,-5,-6,-7,-8,-9]');
- cosine_distance 
------------------
-               2
-(1 row)
-
-SELECT '[1,2]'::minivec <=> '[2,4]';
- ?column? 
-----------
-        0
-(1 row)
-
-SELECT l1_distance('[0,0]'::minivec, '[3,4]');
- l1_distance 
--------------
-           7
-(1 row)
-
-SELECT l1_distance('[0,0]'::minivec, '[0,1]');
- l1_distance 
--------------
-           1
-(1 row)
-
-SELECT l1_distance('[1,2]'::minivec, '[3]');
-ERROR:  different minivec dimensions 2 and 1
-SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[1,2,3,4,5,6,7,8,9]');
- l1_distance 
--------------
-           0
-(1 row)
-
-SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[0,3,2,5,4,7,6,9,8]');
- l1_distance 
--------------
-           9
-(1 row)
-
-SELECT '[0,0]'::minivec <+> '[3,4]';
- ?column? 
-----------
-        7
-(1 row)
-
-SELECT l2_normalize('[3,4]'::minivec);
-  l2_normalize  
-----------------
- [0.625,0.8125]
-(1 row)
-
-SELECT l2_normalize('[3,0]'::minivec);
- l2_normalize 
---------------
- [1,0]
-(1 row)
-
-SELECT l2_normalize('[0,0.1]'::minivec);
- l2_normalize 
---------------
- [0,1]
-(1 row)
-
-SELECT l2_normalize('[0,0]'::minivec);
- l2_normalize 
---------------
- [0,0]
-(1 row)
-
-SELECT l2_normalize('[448]'::minivec);
- l2_normalize 
---------------
- [1]
-(1 row)
-
-SELECT binary_quantize('[1,0,-1]'::minivec);
- binary_quantize 
------------------
- 100
-(1 row)
-
-SELECT binary_quantize('[0,0.1,-0.2,-0.3,0.4,0.5,0.6,-0.7,0.8,-0.9,1]'::minivec);
- binary_quantize 
------------------
- 01001110101
-(1 row)
-
-SELECT subvector('[1,2,3,4,5]'::minivec, 1, 3);
- subvector 
------------
- [1,2,3]
-(1 row)
-
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, 2);
- subvector 
------------
- [3,4]
-(1 row)
-
-SELECT subvector('[1,2,3,4,5]'::minivec, -1, 3);
- subvector 
------------
- [1]
-(1 row)
-
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, 9);
- subvector 
------------
- [3,4,5]
-(1 row)
-
-SELECT subvector('[1,2,3,4,5]'::minivec, 1, 0);
-ERROR:  minivec must have at least 1 dimension
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, -1);
-ERROR:  minivec must have at least 1 dimension
-SELECT subvector('[1,2,3,4,5]'::minivec, -1, 2);
-ERROR:  minivec must have at least 1 dimension
-SELECT subvector('[1,2,3,4,5]'::minivec, 2147483647, 10);
-ERROR:  minivec must have at least 1 dimension
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, 2147483647);
- subvector 
------------
- [3,4,5]
-(1 row)
-
-SELECT subvector('[1,2,3,4,5]'::minivec, -2147483644, 2147483647);
- subvector 
------------
- [1,2]
-(1 row)
-

test/sql/btree.sql

@@ -22,17 +22,6 @@ SELECT * FROM t ORDER BY val;
 
 DROP TABLE t;
 
--- minivec
-
-CREATE TABLE t (val minivec(3));
-INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
-CREATE INDEX ON t (val);
-
-SELECT * FROM t WHERE val = '[1,2,3]';
-SELECT * FROM t ORDER BY val;
-
-DROP TABLE t;
-
 -- sparsevec
 
 CREATE TABLE t (val sparsevec(3));

test/sql/cast.sql

@@ -38,22 +38,6 @@ SELECT '{1,2,3}'::real[]::halfvec(2);
 SELECT '{65520,-65520}'::real[]::halfvec;
 SELECT '{1e-8,-1e-8}'::real[]::halfvec;
 
-SELECT '[1,2,3]'::vector::minivec;
-SELECT '[1,2,3]'::vector::minivec(3);
-SELECT '[1,2,3]'::vector::minivec(2);
-SELECT '[465]'::vector::minivec;
-SELECT '[1e-8]'::vector::minivec;
-
-SELECT '[1,2,3]'::minivec::vector;
-SELECT '[1,2,3]'::minivec::vector(3);
-SELECT '[1,2,3]'::minivec::vector(2);
-
-SELECT '{1,2,3}'::real[]::minivec;
-SELECT '{1,2,3}'::real[]::minivec(3);
-SELECT '{1,2,3}'::real[]::minivec(2);
-SELECT '{465,-465}'::real[]::minivec;
-SELECT '{1e-8,-1e-8}'::real[]::minivec;
-
 SELECT '[0,1.5,0,3.5,0]'::vector::sparsevec;
 SELECT '[0,1.5,0,3.5,0]'::vector::sparsevec(5);
 SELECT '[0,1.5,0,3.5,0]'::vector::sparsevec(4);

test/sql/copy.sql

@@ -28,21 +28,6 @@ SELECT * FROM t2 ORDER BY val;
 DROP TABLE t;
 DROP TABLE t2;
 
--- minivec
-
-CREATE TABLE t (val minivec(3));
-INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
-
-CREATE TABLE t2 (val minivec(3));
-
-\copy t TO 'results/minivec.bin' WITH (FORMAT binary)
-\copy t2 FROM 'results/minivec.bin' WITH (FORMAT binary)
-
-SELECT * FROM t2 ORDER BY val;
-
-DROP TABLE t;
-DROP TABLE t2;
-
 -- sparsevec
 
 CREATE TABLE t (val sparsevec(3));

test/sql/minivec.sql

@@ -1,134 +0,0 @@
-SELECT '[1,2,3]'::minivec;
-SELECT '[-1,-2,-3]'::minivec;
-SELECT '[1.,2.,3.]'::minivec;
-SELECT ' [ 1,  2 ,    3  ] '::minivec;
-SELECT '[1.23456]'::minivec;
-SELECT '[hello,1]'::minivec;
-SELECT '[NaN,1]'::minivec;
-SELECT '[Infinity,1]'::minivec;
-SELECT '[-Infinity,1]'::minivec;
-SELECT '[65519,-65519]'::minivec;
-SELECT '[65520,-65520]'::minivec;
-SELECT '[1e-8,-1e-8]'::minivec;
-SELECT '[4e38,1]'::minivec;
-SELECT '[1e-46,1]'::minivec;
-SELECT '[1,2,3'::minivec;
-SELECT '[1,2,3]9'::minivec;
-SELECT '1,2,3'::minivec;
-SELECT ''::minivec;
-SELECT '['::minivec;
-SELECT '[ '::minivec;
-SELECT '[,'::minivec;
-SELECT '[]'::minivec;
-SELECT '[ ]'::minivec;
-SELECT '[,]'::minivec;
-SELECT '[1,]'::minivec;
-SELECT '[1a]'::minivec;
-SELECT '[1,,3]'::minivec;
-SELECT '[1, ,3]'::minivec;
-
-SELECT '[1,2,3]'::minivec(3);
-SELECT '[1,2,3]'::minivec(2);
-SELECT '[1,2,3]'::minivec(3, 2);
-SELECT '[1,2,3]'::minivec('a');
-SELECT '[1,2,3]'::minivec(0);
-SELECT '[1,2,3]'::minivec(16001);
-
-SELECT unnest('{"[1,2,3]", "[4,5,6]"}'::minivec[]);
-SELECT '{"[1,2,3]"}'::minivec(2)[];
-
-SELECT '[1,2,3]'::minivec + '[4,5,6]';
-SELECT '[448]'::minivec + '[448]';
-SELECT '[1,2]'::minivec + '[3]';
-
-SELECT '[1,2,3]'::minivec - '[4,5,6]';
-SELECT '[-448]'::minivec - '[448]';
-SELECT '[1,2]'::minivec - '[3]';
-
-SELECT '[1,2,3]'::minivec * '[4,5,6]';
-SELECT '[448]'::minivec * '[448]';
-SELECT '[1e-7]'::minivec * '[1e-7]';
-SELECT '[1,2]'::minivec * '[3]';
-
-SELECT '[1,2,3]'::minivec || '[4,5]';
-SELECT array_fill(0, ARRAY[16000])::minivec || '[1]';
-
-SELECT '[1,2,3]'::minivec < '[1,2,3]';
-SELECT '[1,2,3]'::minivec < '[1,2]';
-SELECT '[1,2,3]'::minivec <= '[1,2,3]';
-SELECT '[1,2,3]'::minivec <= '[1,2]';
-SELECT '[1,2,3]'::minivec = '[1,2,3]';
-SELECT '[1,2,3]'::minivec = '[1,2]';
-SELECT '[1,2,3]'::minivec != '[1,2,3]';
-SELECT '[1,2,3]'::minivec != '[1,2]';
-SELECT '[1,2,3]'::minivec >= '[1,2,3]';
-SELECT '[1,2,3]'::minivec >= '[1,2]';
-SELECT '[1,2,3]'::minivec > '[1,2,3]';
-SELECT '[1,2,3]'::minivec > '[1,2]';
-
-SELECT minivec_cmp('[1,2,3]', '[1,2,3]');
-SELECT minivec_cmp('[1,2,3]', '[0,0,0]');
-SELECT minivec_cmp('[0,0,0]', '[1,2,3]');
-SELECT minivec_cmp('[1,2]', '[1,2,3]');
-SELECT minivec_cmp('[1,2,3]', '[1,2]');
-SELECT minivec_cmp('[1,2]', '[2,3,4]');
-SELECT minivec_cmp('[2,3]', '[1,2,3]');
-
-SELECT vector_dims('[1,2,3]'::minivec);
-
-SELECT round(l2_norm('[1,1]'::minivec)::numeric, 5);
-SELECT l2_norm('[3,4]'::minivec);
-SELECT l2_norm('[0,1]'::minivec);
-SELECT l2_norm('[0,0]'::minivec);
-SELECT l2_norm('[2]'::minivec);
-
-SELECT l2_distance('[0,0]'::minivec, '[3,4]');
-SELECT l2_distance('[0,0]'::minivec, '[0,1]');
-SELECT l2_distance('[1,2]'::minivec, '[3]');
-SELECT l2_distance('[1,1,1,1,1,1,1,1,1]'::minivec, '[1,1,1,1,1,1,1,4,5]');
-SELECT '[0,0]'::minivec <-> '[3,4]';
-
-SELECT inner_product('[1,2]'::minivec, '[3,4]');
-SELECT inner_product('[1,2]'::minivec, '[3]');
-SELECT inner_product('[448]'::minivec, '[448]');
-SELECT inner_product('[1,1,1,1,1,1,1,1,1]'::minivec, '[1,2,3,4,5,6,7,8,9]');
-SELECT '[1,2]'::minivec <#> '[3,4]';
-
-SELECT cosine_distance('[1,2]'::minivec, '[2,4]');
-SELECT cosine_distance('[1,2]'::minivec, '[0,0]');
-SELECT cosine_distance('[1,1]'::minivec, '[1,1]');
-SELECT cosine_distance('[1,0]'::minivec, '[0,2]');
-SELECT cosine_distance('[1,1]'::minivec, '[-1,-1]');
-SELECT cosine_distance('[1,2]'::minivec, '[3]');
-SELECT cosine_distance('[1,1]'::minivec, '[1.1,1.1]');
-SELECT cosine_distance('[1,1]'::minivec, '[-1.1,-1.1]');
-SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[1,2,3,4,5,6,7,8,9]');
-SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[-1,-2,-3,-4,-5,-6,-7,-8,-9]');
-SELECT '[1,2]'::minivec <=> '[2,4]';
-
-SELECT l1_distance('[0,0]'::minivec, '[3,4]');
-SELECT l1_distance('[0,0]'::minivec, '[0,1]');
-SELECT l1_distance('[1,2]'::minivec, '[3]');
-SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[1,2,3,4,5,6,7,8,9]');
-SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::minivec, '[0,3,2,5,4,7,6,9,8]');
-SELECT '[0,0]'::minivec <+> '[3,4]';
-
-SELECT l2_normalize('[3,4]'::minivec);
-SELECT l2_normalize('[3,0]'::minivec);
-SELECT l2_normalize('[0,0.1]'::minivec);
-SELECT l2_normalize('[0,0]'::minivec);
-SELECT l2_normalize('[448]'::minivec);
-
-SELECT binary_quantize('[1,0,-1]'::minivec);
-SELECT binary_quantize('[0,0.1,-0.2,-0.3,0.4,0.5,0.6,-0.7,0.8,-0.9,1]'::minivec);
-
-SELECT subvector('[1,2,3,4,5]'::minivec, 1, 3);
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, 2);
-SELECT subvector('[1,2,3,4,5]'::minivec, -1, 3);
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, 9);
-SELECT subvector('[1,2,3,4,5]'::minivec, 1, 0);
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, -1);
-SELECT subvector('[1,2,3,4,5]'::minivec, -1, 2);
-SELECT subvector('[1,2,3,4,5]'::minivec, 2147483647, 10);
-SELECT subvector('[1,2,3,4,5]'::minivec, 3, 2147483647);
-SELECT subvector('[1,2,3,4,5]'::minivec, -2147483644, 2147483647);

test/t/039_hnsw_minivec_build_recall.pl

@@ -1,136 +0,0 @@
-use strict;
-use warnings FATAL => 'all';
-use PostgreSQL::Test::Cluster;
-use PostgreSQL::Test::Utils;
-use Test::More;
-
-my $node;
-my @queries = ();
-my @expected;
-my $limit = 20;
-my $dim = 10;
-my $array_sql = join(",", ('2 * random() * random()') x $dim);
-
-sub test_recall
-{
-	my ($min, $operator) = @_;
-	my $correct = 0;
-	my $total = 0;
-
-	my $explain = $node->safe_psql("postgres", qq(
-		SET enable_seqscan = off;
-		EXPLAIN ANALYZE SELECT i FROM tst ORDER BY v $operator '$queries[0]' LIMIT $limit;
-	));
-	like($explain, qr/Index Scan/);
-
-	for my $i (0 .. $#queries)
-	{
-		my $actual = $node->safe_psql("postgres", qq(
-			SET enable_seqscan = off;
-			SELECT i FROM tst ORDER BY v $operator '$queries[$i]' LIMIT $limit;
-		));
-		my @actual_ids = split("\n", $actual);
-		my %actual_set = map { $_ => 1 } @actual_ids;
-
-		my @expected_ids = split("\n", $expected[$i]);
-
-		foreach (@expected_ids)
-		{
-			if (exists($actual_set{$_}))
-			{
-				$correct++;
-			}
-			$total++;
-		}
-	}
-
-	cmp_ok($correct / $total, ">=", $min, $operator);
-}
-
-# Initialize node
-$node = PostgreSQL::Test::Cluster->new('node');
-$node->init;
-$node->start;
-
-# Create table
-$node->safe_psql("postgres", "CREATE EXTENSION vector;");
-$node->safe_psql("postgres", "CREATE TABLE tst (i int4, v minivec($dim));");
-$node->safe_psql("postgres",
-	"INSERT INTO tst SELECT i, ARRAY[$array_sql] FROM generate_series(1, 10000) i;"
-);
-
-# Generate queries
-for (1 .. 20)
-{
-	my @r = ();
-	for (1 .. $dim)
-	{
-		push(@r, rand());
-	}
-	push(@queries, "[" . join(",", @r) . "]");
-}
-
-# Check each index type
-my @operators = ("<->", "<#>", "<=>", "<+>");
-my @opclasses = ("minivec_l2_ops", "minivec_ip_ops", "minivec_cosine_ops", "minivec_l1_ops");
-
-for my $i (0 .. $#operators)
-{
-	my $operator = $operators[$i];
-	my $opclass = $opclasses[$i];
-
-	# Get exact results
-	@expected = ();
-	foreach (@queries)
-	{
-		my $res = $node->safe_psql("postgres", "SELECT i FROM tst ORDER BY v $operator '$_' LIMIT $limit;");
-		push(@expected, $res);
-	}
-
-	# Build index serially
-	$node->safe_psql("postgres", qq(
-		SET max_parallel_maintenance_workers = 0;
-		CREATE INDEX idx ON tst USING hnsw (v $opclass);
-	));
-
-	# Test approximate results
-	my $min = 0.98;
-	if ($operator eq '<=>')
-	{
-		$min = 0.65;
-	}
-	test_recall($min, $operator);
-
-	$node->safe_psql("postgres", "DROP INDEX idx;");
-
-	# Build index in parallel in memory
-	my ($ret, $stdout, $stderr) = $node->psql("postgres", qq(
-		SET client_min_messages = DEBUG;
-		SET min_parallel_table_scan_size = 1;
-		CREATE INDEX idx ON tst USING hnsw (v $opclass);
-	));
-	is($ret, 0, $stderr);
-	like($stderr, qr/using \d+ parallel workers/);
-
-	# Test approximate results
-	test_recall($min, $operator);
-
-	$node->safe_psql("postgres", "DROP INDEX idx;");
-
-	# Build index in parallel on disk
-	# Set parallel_workers on table to use workers with low maintenance_work_mem
-	($ret, $stdout, $stderr) = $node->psql("postgres", qq(
-		ALTER TABLE tst SET (parallel_workers = 2);
-		SET client_min_messages = DEBUG;
-		SET maintenance_work_mem = '4MB';
-		CREATE INDEX idx ON tst USING hnsw (v $opclass);
-		ALTER TABLE tst RESET (parallel_workers);
-	));
-	is($ret, 0, $stderr);
-	like($stderr, qr/using \d+ parallel workers/);
-	like($stderr, qr/hnsw graph no longer fits into maintenance_work_mem/);
-
-	$node->safe_psql("postgres", "DROP INDEX idx;");
-}
-
-done_testing();

test/t/039_ivfflat_streaming.pl

@@ -0,0 +1,31 @@
+use strict;
+use warnings FATAL => 'all';
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+use Test::More;
+
+my $dim = 3;
+my $array_sql = join(",", ('random()') x $dim);
+
+# Initialize node
+my $node = PostgreSQL::Test::Cluster->new('node');
+$node->init;
+$node->start;
+
+# Create table
+$node->safe_psql("postgres", "CREATE EXTENSION vector;");
+$node->safe_psql("postgres", "CREATE TABLE tst (i int4, v vector($dim));");
+$node->safe_psql("postgres",
+	"INSERT INTO tst SELECT i, ARRAY[$array_sql] FROM generate_series(1, 100000) i;"
+);
+$node->safe_psql("postgres", "CREATE INDEX ON tst USING ivfflat (v vector_l2_ops);");
+
+my $count = $node->safe_psql("postgres", qq(
+	SET enable_seqscan = off;
+	SET ivfflat.probes = 10;
+	SET ivfflat.streaming = on;
+	SELECT COUNT(*) FROM (SELECT v FROM tst WHERE i % 10000 = 0 ORDER BY v <-> (SELECT v FROM tst LIMIT 1) LIMIT 11) t;
+));
+is($count, 10);
+
+done_testing();

test/t/040_ivfflat_streaming_recall.pl

@@ -0,0 +1,125 @@
+use strict;
+use warnings FATAL => 'all';
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+use Test::More;
+
+my $node;
+my @queries = ();
+my @expected;
+my $limit = 20;
+my @cs = (100, 1000);
+
+sub test_recall
+{
+	my ($c, $probes, $min, $operator) = @_;
+	my $correct = 0;
+	my $total = 0;
+
+	my $explain = $node->safe_psql("postgres", qq(
+		SET enable_seqscan = off;
+		SET ivfflat.probes = $probes;
+		SET ivfflat.streaming = on;
+		EXPLAIN ANALYZE SELECT i FROM tst WHERE i % $c = 0 ORDER BY v $operator '$queries[0]' LIMIT $limit;
+	));
+	like($explain, qr/Index Scan using idx on tst/);
+
+	for my $i (0 .. $#queries)
+	{
+		my $actual = $node->safe_psql("postgres", qq(
+			SET enable_seqscan = off;
+			SET ivfflat.probes = $probes;
+			SET ivfflat.streaming = on;
+			SELECT i FROM tst WHERE i % $c = 0 ORDER BY v $operator '$queries[$i]' LIMIT $limit;
+		));
+		my @actual_ids = split("\n", $actual);
+
+		my @expected_ids = split("\n", $expected[$i]);
+		my %expected_set = map { $_ => 1 } @expected_ids;
+
+		foreach (@actual_ids)
+		{
+			if (exists($expected_set{$_}))
+			{
+				$correct++;
+			}
+		}
+
+		$total += $limit;
+	}
+
+	cmp_ok($correct / $total, ">=", $min, $operator);
+}
+
+# Initialize node
+$node = PostgreSQL::Test::Cluster->new('node');
+$node->init;
+$node->start;
+
+# Create table
+$node->safe_psql("postgres", "CREATE EXTENSION vector;");
+$node->safe_psql("postgres", "CREATE TABLE tst (i int4, v vector(3));");
+$node->safe_psql("postgres",
+	"INSERT INTO tst SELECT i, ARRAY[random(), random(), random()] FROM generate_series(1, 100000) i;"
+);
+
+# Generate queries
+for (1 .. 20)
+{
+	my $r1 = rand();
+	my $r2 = rand();
+	my $r3 = rand();
+	push(@queries, "[$r1,$r2,$r3]");
+}
+
+# Check each index type
+my @operators = ("<->", "<=>");
+my @opclasses = ("vector_l2_ops", "vector_cosine_ops");
+
+for my $i (0 .. $#operators)
+{
+	my $operator = $operators[$i];
+	my $opclass = $opclasses[$i];
+
+	$node->safe_psql("postgres", "CREATE INDEX idx ON tst USING ivfflat (v $opclass);");
+
+	foreach (@cs)
+	{
+		my $c = $_;
+
+		# Get exact results
+		@expected = ();
+		foreach (@queries)
+		{
+			my $res = $node->safe_psql("postgres", qq(
+				SET enable_indexscan = off;
+				WITH top AS (
+					SELECT v $operator '$_' AS distance FROM tst WHERE i % $c = 0 ORDER BY distance LIMIT $limit
+				)
+				SELECT i FROM tst WHERE (v $operator '$_') <= (SELECT MAX(distance) FROM top)
+			));
+			push(@expected, $res);
+		}
+
+		if ($c == 100)
+		{
+			test_recall($c, 1, 0.58, $operator);
+			test_recall($c, 10, 0.98, $operator);
+		}
+		else
+		{
+			if ($operator eq "<->")
+			{
+				test_recall($c, 1, 0.80, $operator);
+			}
+			else
+			{
+				test_recall($c, 1, 0.88, $operator);
+			}
+		}
+	}
+
+	$node->safe_psql("postgres", "DROP INDEX idx;");
+}
+
+done_testing();