Here is v2,
with fixed documentation and numeric version of the implementation.
--
Petr Jelinek http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index f475458..38330d4 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -920,6 +920,51 @@
<entry><literal>width_bucket(5.35, 0.024, 10.06, 5)</literal></entry>
<entry><literal>3</literal></entry>
</row>
+
+ <row>
+ <entry>
+ <indexterm>
+ <primary>varwidth_bucket</primary>
+ </indexterm>
+ <literal><function>varwidth_bucket(<parameter>op</parameter> <type>anyelemnt</type>, <parameter>thresholds</parameter> <type>anyarray</type>)</function></literal>
+ </entry>
+ <entry><type>int</type></entry>
+ <entry>return the bucket to which <parameter>operand</> would
+ be assigned based on right-bound bucket <parameter>thresholds</>,
+ the <parameter>thresholds</> must be ordered (smallest first)</entry>
+ <entry><literal>varwidth_bucket(now(), array['yesterday', 'today', 'tomorrow'])</literal></entry>
+ <entry><literal>3</literal></entry>
+ </row>
+
+ <row>
+ <entry><literal><function>varwidth_bucket(<parameter>op</parameter> <type>numeric</type>, <parameter>thresholds</parameter> <type>numerc[]</type>)</function></literal></entry>
+ <entry><type>int</type></entry>
+ <entry>return the bucket to which <parameter>operand</> would
+ be assigned based on right-bound bucket <parameter>thresholds</>,
+ the <parameter>thresholds</> must be ordered (smallest first)</entry>
+ <entry><literal>varwidth_bucket(5.35::numeric, ARRAY[1, 3, 4, 6]::numeric[])</literal></entry>
+ <entry><literal>3</literal></entry>
+ </row>
+
+ <row>
+ <entry><literal><function>varwidth_bucket(<parameter>op</parameter> <type>dp</type>, <parameter>thresholds</parameter> <type>dp[]</type>)</function></literal></entry>
+ <entry><type>int</type></entry>
+ <entry>return the bucket to which <parameter>operand</> would
+ be assigned based on right-bound bucket <parameter>thresholds</>,
+ the <parameter>thresholds</> must be ordered (smallest first)</entry>
+ <entry><literal>varwidth_bucket(5.35, ARRAY[1, 3, 4, 6])</literal></entry>
+ <entry><literal>3</literal></entry>
+ </row>
+
+ <row>
+ <entry><literal><function>varwidth_bucket(<parameter>op</parameter> <type>bigint</type>, <parameter>thresholds</parameter> <type>bigint[]</type>)</function></literal></entry>
+ <entry><type>int</type></entry>
+ <entry>return the bucket to which <parameter>operand</> would
+ be assigned based on right-bound bucket <parameter>thresholds</>,
+ the <parameter>thresholds</> must be ordered (smallest first)</entry>
+ <entry><literal>varwidth_bucket(5, ARRAY[1, 3, 4, 6])</literal></entry>
+ <entry><literal>3</literal></entry>
+ </row>
</tbody>
</tgroup>
</table>
diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c
index f8e94ec..3a77638 100644
--- a/src/backend/utils/adt/arrayfuncs.c
+++ b/src/backend/utils/adt/arrayfuncs.c
@@ -5502,3 +5502,130 @@ array_replace(PG_FUNCTION_ARGS)
fcinfo);
PG_RETURN_ARRAYTYPE_P(array);
}
+
+/*
+ * Implements the generic version of the varwidth_bucket() function.
+ * See also varwidth_bucket_numeric().
+ *
+ * Uses the generic varwidth_bucket_internal to do the actual work.
+ */
+Datum
+varwidth_bucket_generic(PG_FUNCTION_ARGS)
+{
+ Datum operand = PG_GETARG_DATUM(0);
+ ArrayType *thresholds = PG_GETARG_ARRAYTYPE_P(1);
+ Oid collation = PG_GET_COLLATION();
+ Oid element_type = get_fn_expr_argtype(fcinfo->flinfo, 0);
+ TypeCacheEntry *typentry;
+ int32 ret;
+
+ /* Make sure val and thresholds use same types so we can be sure they can be compared. */
+ if (element_type != ARR_ELEMTYPE(thresholds))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("cannot calculate buckets for operand using thresholds of different type")));
+
+ /* Fetch information about the input type */
+ typentry = (TypeCacheEntry *) fcinfo->flinfo->fn_extra;
+ if (typentry == NULL ||
+ typentry->type_id != element_type)
+ {
+ typentry = lookup_type_cache(element_type,
+ TYPECACHE_CMP_PROC_FINFO);
+ if (!OidIsValid(typentry->cmp_proc_finfo.fn_oid))
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_FUNCTION),
+ errmsg("could not identify a comparison function for type %s",
+ format_type_be(element_type))));
+ fcinfo->flinfo->fn_extra = (void *) typentry;
+ }
+
+ ret = varwidth_bucket_internal(operand, thresholds,
+ &typentry->cmp_proc_finfo, collation,
+ typentry->typlen, typentry->typbyval,
+ typentry->typalign);
+
+ /* Avoid leaking memory when handed toasted input. */
+ PG_FREE_IF_COPY(thresholds, 1);
+
+ PG_RETURN_INT32(ret);
+}
+
+/*
+ * Implements the generic version of the varwidth_bucket() function.
+ * See also varwidth_bucket_float8() and varwidth_bucket_int8().
+ *
+ * 'thresholds' is an array (must be sorted from smallest to biggest value)
+ * containing right-bounds for each "bucket", varwidth_bucket() returns
+ * integer indicating the bucket number that 'operand' belongs to. An operand
+ * greater than the upper bound is assigned to an additional bucket.
+ */
+int32
+varwidth_bucket_internal(Datum operand,
+ ArrayType *thresholds,
+ FmgrInfo *cmpfunc,
+ Oid collation,
+ int typlen,
+ bool typbyval,
+ char typalign)
+{
+ char *thresholds_data;
+ int32 left;
+ int32 mid;
+ int32 right;
+ FunctionCallInfoData locfcinfo;
+
+ /* Verify input */
+ if (ARR_NDIM(thresholds) != 1)
+ ereport(ERROR,
+ (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
+ errmsg("thresholds must be one dimensional array ")));
+
+ if (ARR_HASNULL(thresholds))
+ ereport(ERROR,
+ (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
+ errmsg("thresholds array must not contain NULLs")));
+
+ thresholds_data = (char *) ARR_DATA_PTR(thresholds);
+
+ InitFunctionCallInfoData(locfcinfo, cmpfunc, 2,
+ collation, NULL, NULL);
+
+ /* Find the bucket */
+ left = 0;
+ right = ArrayGetNItems(ARR_NDIM(thresholds), ARR_DIMS(thresholds));
+ while (left < right) {
+ char *ptr = thresholds_data;
+ Datum elm;
+ int32 cmpresult;
+
+ mid = (left + right) / 2;
+
+ ptr = array_seek(ptr, left, NULL, mid-left, typlen, typbyval, typalign);
+
+ elm = fetch_att(ptr, typbyval, typlen);
+
+ locfcinfo.arg[0] = operand;
+ locfcinfo.arg[1] = elm;
+ locfcinfo.argnull[0] = false;
+ locfcinfo.argnull[1] = false;
+ locfcinfo.isnull = false;
+ cmpresult = DatumGetInt32(FunctionCallInvoke(&locfcinfo));
+
+ if (cmpresult < 0)
+ {
+ right = mid;
+ }
+ else
+ {
+ /* Move the thresholds pointer so we don't have to seek the
+ * beginning of array again */
+ thresholds_data = att_addlength_pointer(ptr, typlen, ptr);
+ thresholds_data = (char *) att_align_nominal(thresholds_data, typalign);
+
+ left = mid + 1;
+ }
+ }
+
+ return left;
+}
diff --git a/src/backend/utils/adt/float.c b/src/backend/utils/adt/float.c
index 41b3eaa..a1eaadf 100644
--- a/src/backend/utils/adt/float.c
+++ b/src/backend/utils/adt/float.c
@@ -2800,6 +2800,60 @@ width_bucket_float8(PG_FUNCTION_ARGS)
PG_RETURN_INT32(result);
}
+/*
+ * Implements the float8 version of the varwidth_bucket() function.
+ * See also varwidth_bucket_general() and varwidth_bucket_int8().
+ *
+ * 'thresholds' is an array (must be sorted from smallest to biggest value)
+ * containing right-bounds for each "bucket", varwidth_bucket() returns
+ * integer indicating the bucket number that 'operand' belongs to. An operand
+ * greater than the upper bound is assigned to an additional bucket.
+ */
+Datum
+varwidth_bucket_float8(PG_FUNCTION_ARGS)
+{
+ float8 operand = PG_GETARG_FLOAT8(0);
+ ArrayType *thresholds_in = PG_GETARG_ARRAYTYPE_P(1);
+ float8 *thresholds;
+ int32 left;
+ int32 mid;
+ int32 right;
+
+ /* Verify input */
+ if (ARR_NDIM(thresholds_in) != 1)
+ ereport(ERROR,
+ (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
+ errmsg("thresholds must be one dimensional array ")));
+
+ if (ARR_HASNULL(thresholds_in))
+ ereport(ERROR,
+ (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
+ errmsg("thresholds array must not contain NULLs")));
+
+ if (ARR_ELEMTYPE(thresholds_in) != FLOAT8OID)
+ ereport(ERROR,
+ (errcode(ERRCODE_ARRAY_ELEMENT_ERROR),
+ errmsg("thresholds array must be type float8[]")));
+
+ thresholds = (float8 *) ARR_DATA_PTR(thresholds_in);
+
+ /* Find the bucket */
+ left = 0;
+ right = ArrayGetNItems(ARR_NDIM(thresholds_in), ARR_DIMS(thresholds_in));
+ while (left < right) {
+ mid = (left + right) / 2;
+ if (operand < thresholds[mid])
+ right = mid;
+ else
+ left = mid + 1;
+ }
+
+ /* Avoid leaking memory when handed toasted input. */
+ PG_FREE_IF_COPY(thresholds_in, 1);
+
+ PG_RETURN_INT32(left);
+}
+
/* ========== PRIVATE ROUTINES ========== */
#ifndef HAVE_CBRT
diff --git a/src/backend/utils/adt/int8.c b/src/backend/utils/adt/int8.c
index 96146e0..c1d3c21 100644
--- a/src/backend/utils/adt/int8.c
+++ b/src/backend/utils/adt/int8.c
@@ -17,8 +17,10 @@
#include <limits.h>
#include <math.h>
+#include "catalog/pg_type.h"
#include "funcapi.h"
#include "libpq/pqformat.h"
+#include "utils/array.h"
#include "utils/int8.h"
#include "utils/builtins.h"
@@ -1508,3 +1510,58 @@ generate_series_step_int8(PG_FUNCTION_ARGS)
/* do when there is no more left */
SRF_RETURN_DONE(funcctx);
}
+
+
+/*
+ * Implements the int8 version of the varwidth_bucket() function.
+ * See also varwidth_bucket_float8() and varwidth_bucket_generic().
+ *
+ * 'thresholds' is an array (must be sorted from smallest to biggest value)
+ * containing right-bounds for each "bucket", varwidth_bucket() returns
+ * integer indicating the bucket number that 'operand' belongs to. An operand
+ * greater than the upper bound is assigned to an additional bucket.
+ */
+Datum
+varwidth_bucket_int8(PG_FUNCTION_ARGS)
+{
+ int64 operand = PG_GETARG_INT64(0);
+ ArrayType *thresholds_in = PG_GETARG_ARRAYTYPE_P(1);
+ int64 *thresholds;
+ int32 left;
+ int32 mid;
+ int32 right;
+
+ /* Verify input */
+ if (ARR_NDIM(thresholds_in) != 1)
+ ereport(ERROR,
+ (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
+ errmsg("thresholds must be one dimensional array ")));
+
+ if (ARR_HASNULL(thresholds_in))
+ ereport(ERROR,
+ (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
+ errmsg("thresholds array must not contain NULLs")));
+
+ if (ARR_ELEMTYPE(thresholds_in) != INT8OID)
+ ereport(ERROR,
+ (errcode(ERRCODE_ARRAY_ELEMENT_ERROR),
+ errmsg("thresholds array must be type int8[]")));
+
+ thresholds = (int64 *) ARR_DATA_PTR(thresholds_in);
+
+ /* Find the bucket */
+ left = 0;
+ right = ArrayGetNItems(ARR_NDIM(thresholds_in), ARR_DIMS(thresholds_in));
+ while (left < right) {
+ mid = (left + right) / 2;
+ if (operand < thresholds[mid])
+ right = mid;
+ else
+ left = mid + 1;
+ }
+
+ /* Avoid leaking memory when handed toasted input. */
+ PG_FREE_IF_COPY(thresholds_in, 1);
+
+ PG_RETURN_INT32(left);
+}
diff --git a/src/backend/utils/adt/numeric.c b/src/backend/utils/adt/numeric.c
index 19d0bdc..903b8cc 100644
--- a/src/backend/utils/adt/numeric.c
+++ b/src/backend/utils/adt/numeric.c
@@ -35,6 +35,7 @@
#include "utils/builtins.h"
#include "utils/int8.h"
#include "utils/numeric.h"
+#include "utils/typcache.h"
/* ----------
* Uncomment the following to enable compilation of dump_numeric()
@@ -1344,6 +1345,55 @@ compute_bucket(Numeric operand, Numeric bound1, Numeric bound2,
free_var(&operand_var);
}
+
+/*
+ * Implements the numeric version of the varwidth_bucket() function.
+ * See also varwidth_bucket_generic().
+ *
+ * Uses the generic varwidth_bucket_internal to do the actual work.
+ */
+Datum
+varwidth_bucket_numeric(PG_FUNCTION_ARGS)
+{
+ Numeric operand = PG_GETARG_NUMERIC(0);
+ ArrayType *thresholds = PG_GETARG_ARRAYTYPE_P(1);
+ Oid collation = PG_GET_COLLATION();
+ TypeCacheEntry *typentry;
+ int32 ret;
+
+ /* Make sure val and thresholds use same types so we can be sure they can be compared. */
+ if (ARR_ELEMTYPE(thresholds) != NUMERICOID)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("thresholds array must be of type numeric[]")));
+
+ /* Fetch information about the input type */
+ typentry = (TypeCacheEntry *) fcinfo->flinfo->fn_extra;
+ if (typentry == NULL ||
+ typentry->type_id != NUMERICOID)
+ {
+ typentry = lookup_type_cache(NUMERICOID,
+ TYPECACHE_CMP_PROC_FINFO);
+ if (!OidIsValid(typentry->cmp_proc_finfo.fn_oid))
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_FUNCTION),
+ errmsg("could not identify a comparison function for type %s",
+ format_type_be(NUMERICOID))));
+ fcinfo->flinfo->fn_extra = (void *) typentry;
+ }
+
+ ret = varwidth_bucket_internal(NumericGetDatum(operand), thresholds,
+ &typentry->cmp_proc_finfo, collation,
+ typentry->typlen, typentry->typbyval,
+ typentry->typalign);
+
+ /* Avoid leaking memory when handed toasted input. */
+ PG_FREE_IF_COPY(thresholds, 1);
+
+ PG_RETURN_INT32(ret);
+}
+
+
/* ----------------------------------------------------------------------
*
* Comparison functions
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index 762ce6c..4f402f4 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -515,6 +515,8 @@ DATA(insert OID = 309 ( float84gt PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0
DATA(insert OID = 310 ( float84ge PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16 "701 700" _null_ _null_ _null_ _null_ float84ge _null_ _null_ _null_ ));
DATA(insert OID = 320 ( width_bucket PGNSP PGUID 12 1 0 0 0 f f f f t f i 4 0 23 "701 701 701 23" _null_ _null_ _null_ _null_ width_bucket_float8 _null_ _null_ _null_ ));
DESCR("bucket number of operand in equidepth histogram");
+DATA(insert OID = 3255 ( varwidth_bucket PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 23 "701 1022" _null_ _null_ _null_ _null_ varwidth_bucket_float8 _null_ _null_ _null_ ));
+DESCR("bucket number of operand in the set of right-bound buckets");
DATA(insert OID = 311 ( float8 PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 701 "700" _null_ _null_ _null_ _null_ ftod _null_ _null_ _null_ ));
DESCR("convert float4 to float8");
@@ -731,6 +733,8 @@ DATA(insert OID = 469 ( int8lt PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16
DATA(insert OID = 470 ( int8gt PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16 "20 20" _null_ _null_ _null_ _null_ int8gt _null_ _null_ _null_ ));
DATA(insert OID = 471 ( int8le PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16 "20 20" _null_ _null_ _null_ _null_ int8le _null_ _null_ _null_ ));
DATA(insert OID = 472 ( int8ge PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16 "20 20" _null_ _null_ _null_ _null_ int8ge _null_ _null_ _null_ ));
+DATA(insert OID = 3257 ( varwidth_bucket PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 23 "20 1016" _null_ _null_ _null_ _null_ varwidth_bucket_int8 _null_ _null_ _null_ ));
+DESCR("bucket number of operand in the set of right-bound buckets");
DATA(insert OID = 474 ( int84eq PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16 "20 23" _null_ _null_ _null_ _null_ int84eq _null_ _null_ _null_ ));
DATA(insert OID = 475 ( int84ne PGNSP PGUID 12 1 0 0 0 f f f t t f i 2 0 16 "20 23" _null_ _null_ _null_ _null_ int84ne _null_ _null_ _null_ ));
@@ -889,6 +893,8 @@ DATA(insert OID = 3817 ( arraycontsel PGNSP PGUID 12 1 0 0 0 f f f f t f s 4
DESCR("restriction selectivity for array-containment operators");
DATA(insert OID = 3818 ( arraycontjoinsel PGNSP PGUID 12 1 0 0 0 f f f f t f s 5 0 701 "2281 26 2281 21 2281" _null_ _null_ _null_ _null_ arraycontjoinsel _null_ _null_ _null_ ));
DESCR("join selectivity for array-containment operators");
+DATA(insert OID = 3256 ( varwidth_bucket PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 23 "2283 2277" _null_ _null_ _null_ _null_ varwidth_bucket_generic _null_ _null_ _null_ ));
+DESCR("bucket number of operand in the set of right-bound buckets");
DATA(insert OID = 760 ( smgrin PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 210 "2275" _null_ _null_ _null_ _null_ smgrin _null_ _null_ _null_ ));
DESCR("I/O");
@@ -2296,6 +2302,8 @@ DATA(insert OID = 1980 ( numeric_div_trunc PGNSP PGUID 12 1 0 0 0 f f f f t f i
DESCR("trunc(x/y)");
DATA(insert OID = 2170 ( width_bucket PGNSP PGUID 12 1 0 0 0 f f f f t f i 4 0 23 "1700 1700 1700 23" _null_ _null_ _null_ _null_ width_bucket_numeric _null_ _null_ _null_ ));
DESCR("bucket number of operand in equidepth histogram");
+DATA(insert OID = 3258 ( varwidth_bucket PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 23 "1700 1231" _null_ _null_ _null_ _null_ varwidth_bucket_numeric _null_ _null_ _null_ ));
+DESCR("bucket number of operand in the set of right-bound buckets");
DATA(insert OID = 1747 ( time_pl_interval PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 1083 "1083 1186" _null_ _null_ _null_ _null_ time_pl_interval _null_ _null_ _null_ ));
DATA(insert OID = 1748 ( time_mi_interval PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 1083 "1083 1186" _null_ _null_ _null_ _null_ time_mi_interval _null_ _null_ _null_ ));
diff --git a/src/include/utils/array.h b/src/include/utils/array.h
index 9bbfaae..bfaadc4 100644
--- a/src/include/utils/array.h
+++ b/src/include/utils/array.h
@@ -214,6 +214,7 @@ extern Datum array_fill_with_lower_bounds(PG_FUNCTION_ARGS);
extern Datum array_unnest(PG_FUNCTION_ARGS);
extern Datum array_remove(PG_FUNCTION_ARGS);
extern Datum array_replace(PG_FUNCTION_ARGS);
+extern Datum varwidth_bucket_generic(PG_FUNCTION_ARGS);
extern Datum array_ref(ArrayType *array, int nSubscripts, int *indx,
int arraytyplen, int elmlen, bool elmbyval, char elmalign,
@@ -263,6 +264,8 @@ extern Datum makeMdArrayResult(ArrayBuildState *astate, int ndims,
extern ArrayIterator array_create_iterator(ArrayType *arr, int slice_ndim);
extern bool array_iterate(ArrayIterator iterator, Datum *value, bool *isnull);
extern void array_free_iterator(ArrayIterator iterator);
+extern int32 varwidth_bucket_internal(Datum operand, ArrayType *thresholds, FmgrInfo *cmpfunc,
+ Oid collation, int typlen, bool typbyval, char typalign);
/*
* prototypes for functions defined in arrayutils.c
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index bbb5d39..c8b9aa5 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -451,6 +451,7 @@ extern Datum float84le(PG_FUNCTION_ARGS);
extern Datum float84gt(PG_FUNCTION_ARGS);
extern Datum float84ge(PG_FUNCTION_ARGS);
extern Datum width_bucket_float8(PG_FUNCTION_ARGS);
+extern Datum varwidth_bucket_float8(PG_FUNCTION_ARGS);
/* dbsize.c */
extern Datum pg_tablespace_size_oid(PG_FUNCTION_ARGS);
@@ -1035,6 +1036,7 @@ extern Datum int4_avg_accum_inv(PG_FUNCTION_ARGS);
extern Datum int8_avg(PG_FUNCTION_ARGS);
extern Datum int2int4_sum(PG_FUNCTION_ARGS);
extern Datum width_bucket_numeric(PG_FUNCTION_ARGS);
+extern Datum varwidth_bucket_numeric(PG_FUNCTION_ARGS);
extern Datum hash_numeric(PG_FUNCTION_ARGS);
/* ri_triggers.c */
diff --git a/src/include/utils/int8.h b/src/include/utils/int8.h
index 0e4b949..b4c00a0 100644
--- a/src/include/utils/int8.h
+++ b/src/include/utils/int8.h
@@ -126,4 +126,6 @@ extern Datum oidtoi8(PG_FUNCTION_ARGS);
extern Datum generate_series_int8(PG_FUNCTION_ARGS);
extern Datum generate_series_step_int8(PG_FUNCTION_ARGS);
+extern Datum varwidth_bucket_int8(PG_FUNCTION_ARGS);
+
#endif /* INT8_H */
diff --git a/src/test/regress/expected/arrays.out b/src/test/regress/expected/arrays.out
index 4286691..11984b8 100644
--- a/src/test/regress/expected/arrays.out
+++ b/src/test/regress/expected/arrays.out
@@ -1706,3 +1706,94 @@ select length(md5((f1[1]).c2)) from dest;
drop table dest;
drop type textandtext;
+-- Testing for varwidth_bucket(). For convenience, we test both the
+-- generic, float8 and int8 versions of the function in this file.
+-- errors
+SELECT varwidth_bucket('5.0'::text, ARRAY[3, 4]::integer[]);
+ERROR: function varwidth_bucket(text, integer[]) does not exist
+LINE 1: SELECT varwidth_bucket('5.0'::text, ARRAY[3, 4]::integer[]);
+ ^
+HINT: No function matches the given name and argument types. You might need to add explicit type casts.
+SELECT varwidth_bucket(5.0, ARRAY[3, 4, NULL]);
+ERROR: thresholds array must not contain NULLs
+SELECT varwidth_bucket(5.0, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+ERROR: thresholds must be one dimensional array
+SELECT varwidth_bucket(5.0::float8, ARRAY[3, 4, NULL]);
+ERROR: thresholds array must not contain NULLs
+SELECT varwidth_bucket(5.0::float8, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+ERROR: thresholds must be one dimensional array
+SELECT varwidth_bucket(5::bigint, ARRAY[3, 4, NULL]);
+ERROR: thresholds array must not contain NULLs
+SELECT varwidth_bucket(5.0::bigint, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+ERROR: thresholds must be one dimensional array
+-- normal operation
+CREATE TABLE varwidth_bucket_test (operand_num numeric, operand_f8 float8, operand_int8 int8);
+COPY varwidth_bucket_test (operand_num) FROM stdin;
+UPDATE varwidth_bucket_test SET operand_f8 = operand_num::float8, operand_int8 = operand_num::int8;
+SELECT
+ operand_num,
+ varwidth_bucket(operand_num, ARRAY[1, 3, 5, 10]) AS wb_1,
+ varwidth_bucket(operand_f8, ARRAY[1, 3, 5, 10]) AS wb_1f,
+ varwidth_bucket(operand_num, ARRAY[0, 5.5, 9.99]) AS wb_2,
+ varwidth_bucket(operand_f8, ARRAY[0, 5.5, 9.99]) AS wb_2f,
+ varwidth_bucket(operand_num, ARRAY[-6, -5, 2]) AS wb_3,
+ varwidth_bucket(operand_f8, ARRAY[-6, -5, 2]) AS wb_3f
+ FROM varwidth_bucket_test;
+ operand_num | wb_1 | wb_1f | wb_2 | wb_2f | wb_3 | wb_3f
+------------------+------+-------+------+-------+------+-------
+ -5.2 | 0 | 0 | 0 | 0 | 1 | 1
+ -0.0000000001 | 0 | 0 | 0 | 0 | 2 | 2
+ 0.000000000001 | 0 | 0 | 1 | 1 | 2 | 2
+ 1 | 1 | 1 | 1 | 1 | 2 | 2
+ 1.99999999999999 | 1 | 1 | 1 | 1 | 2 | 2
+ 2 | 1 | 1 | 1 | 1 | 3 | 3
+ 2.00000000000001 | 1 | 1 | 1 | 1 | 3 | 3
+ 3 | 2 | 2 | 1 | 1 | 3 | 3
+ 4 | 2 | 2 | 1 | 1 | 3 | 3
+ 4.5 | 2 | 2 | 1 | 1 | 3 | 3
+ 5 | 3 | 3 | 1 | 1 | 3 | 3
+ 5.5 | 3 | 3 | 2 | 2 | 3 | 3
+ 6 | 3 | 3 | 2 | 2 | 3 | 3
+ 7 | 3 | 3 | 2 | 2 | 3 | 3
+ 8 | 3 | 3 | 2 | 2 | 3 | 3
+ 9 | 3 | 3 | 2 | 2 | 3 | 3
+ 9.99999999999999 | 3 | 3 | 3 | 3 | 3 | 3
+ 10 | 4 | 4 | 3 | 3 | 3 | 3
+ 10.0000000000001 | 4 | 4 | 3 | 3 | 3 | 3
+(19 rows)
+
+SELECT
+ operand_int8,
+ varwidth_bucket(operand_int8, ARRAY[1, 3, 5, 10]) AS wb_1,
+ varwidth_bucket(operand_int8, ARRAY[-6, -5, 2]) AS wb_2
+ FROM varwidth_bucket_test;
+ operand_int8 | wb_1 | wb_2
+--------------+------+------
+ -5 | 0 | 2
+ 0 | 0 | 2
+ 0 | 0 | 2
+ 1 | 1 | 2
+ 2 | 1 | 3
+ 2 | 1 | 3
+ 2 | 1 | 3
+ 3 | 2 | 3
+ 4 | 2 | 3
+ 5 | 3 | 3
+ 5 | 3 | 3
+ 6 | 3 | 3
+ 6 | 3 | 3
+ 7 | 3 | 3
+ 8 | 3 | 3
+ 9 | 3 | 3
+ 10 | 4 | 3
+ 10 | 4 | 3
+ 10 | 4 | 3
+(19 rows)
+
+DROP TABLE varwidth_bucket_test;
+SELECT varwidth_bucket(now(), array['yesterday', 'today', 'tomorrow']::timestamptz[]);
+ varwidth_bucket
+-----------------
+ 2
+(1 row)
+
diff --git a/src/test/regress/sql/arrays.sql b/src/test/regress/sql/arrays.sql
index d9f7cbf..701da42 100644
--- a/src/test/regress/sql/arrays.sql
+++ b/src/test/regress/sql/arrays.sql
@@ -476,3 +476,62 @@ drop table src;
select length(md5((f1[1]).c2)) from dest;
drop table dest;
drop type textandtext;
+
+-- Testing for varwidth_bucket(). For convenience, we test both the
+-- generic, float8 and int8 versions of the function in this file.
+
+-- errors
+SELECT varwidth_bucket('5.0'::text, ARRAY[3, 4]::integer[]);
+SELECT varwidth_bucket(5.0, ARRAY[3, 4, NULL]);
+SELECT varwidth_bucket(5.0, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+SELECT varwidth_bucket(5.0::float8, ARRAY[3, 4, NULL]);
+SELECT varwidth_bucket(5.0::float8, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+SELECT varwidth_bucket(5::bigint, ARRAY[3, 4, NULL]);
+SELECT varwidth_bucket(5.0::bigint, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+
+-- normal operation
+CREATE TABLE varwidth_bucket_test (operand_num numeric, operand_f8 float8, operand_int8 int8);
+
+COPY varwidth_bucket_test (operand_num) FROM stdin;
+-5.2
+-0.0000000001
+0.000000000001
+1
+1.99999999999999
+2
+2.00000000000001
+3
+4
+4.5
+5
+5.5
+6
+7
+8
+9
+9.99999999999999
+10
+10.0000000000001
+\.
+
+UPDATE varwidth_bucket_test SET operand_f8 = operand_num::float8, operand_int8 = operand_num::int8;
+
+SELECT
+ operand_num,
+ varwidth_bucket(operand_num, ARRAY[1, 3, 5, 10]) AS wb_1,
+ varwidth_bucket(operand_f8, ARRAY[1, 3, 5, 10]) AS wb_1f,
+ varwidth_bucket(operand_num, ARRAY[0, 5.5, 9.99]) AS wb_2,
+ varwidth_bucket(operand_f8, ARRAY[0, 5.5, 9.99]) AS wb_2f,
+ varwidth_bucket(operand_num, ARRAY[-6, -5, 2]) AS wb_3,
+ varwidth_bucket(operand_f8, ARRAY[-6, -5, 2]) AS wb_3f
+ FROM varwidth_bucket_test;
+
+SELECT
+ operand_int8,
+ varwidth_bucket(operand_int8, ARRAY[1, 3, 5, 10]) AS wb_1,
+ varwidth_bucket(operand_int8, ARRAY[-6, -5, 2]) AS wb_2
+ FROM varwidth_bucket_test;
+
+DROP TABLE varwidth_bucket_test;
+
+SELECT varwidth_bucket(now(), array['yesterday', 'today', 'tomorrow']::timestamptz[]);
--
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