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Implement the width_bucket() function, per SQL2003. This commit only adds

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a variant of the function for the 'numeric' datatype; it would be possible
to add additional variants for other datatypes, but I haven't done so yet.

This commit includes regression tests and minimal documentation; if we
want developers to actually use this function in applications, we'll
probably need to document what it does more fully.
This commit is contained in:
Neil Conway
2004-05-14 21:42:30 +00:00
parent 19a495caaa
commit 0079547bcb
10 changed files with 272 additions and 23 deletions
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4
src/include/catalog/catversion.h
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@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.229 2004/05/10 22:44:49 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.230 2004/05/14 21:42:28 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 200405101
#define CATALOG_VERSION_NO 200405141
#endif

4
src/include/catalog/pg_proc.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.328 2004/05/07 16:57:16 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.329 2004/05/14 21:42:28 neilc Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -2508,6 +2508,8 @@ DATA(insert OID = 1745 ( float4 PGNSP PGUID 12 f f t f i 1 700 "1700" _null_
DESCR("(internal)");
DATA(insert OID = 1746 ( float8 PGNSP PGUID 12 f f t f i 1 701 "1700" _null_ numeric_float8 - _null_ ));
DESCR("(internal)");
DATA(insert OID = 2170 ( width_bucket PGNSP PGUID 12 f f t f i 4 23 "1700 1700 1700 23" _null_ width_bucket_numeric - _null_ ));
DESCR("bucket number of operand in equidepth histogram");
DATA(insert OID = 1747 ( time_pl_interval PGNSP PGUID 12 f f t f i 2 1083 "1083 1186" _null_ time_pl_interval - _null_ ));
DESCR("plus");

3
src/include/utils/builtins.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.237 2004/05/05 04:48:47 tgl Exp $
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.238 2004/05/14 21:42:30 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@ -758,6 +758,7 @@ extern Datum int8_sum(PG_FUNCTION_ARGS);
extern Datum int2_avg_accum(PG_FUNCTION_ARGS);
extern Datum int4_avg_accum(PG_FUNCTION_ARGS);
extern Datum int8_avg(PG_FUNCTION_ARGS);
extern Datum width_bucket_numeric(PG_FUNCTION_ARGS);
/* ri_triggers.c */
extern Datum RI_FKey_check_ins(PG_FUNCTION_ARGS);

3
src/include/utils/errcodes.h
View File

@ -11,7 +11,7 @@
*
* Copyright (c) 2003, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/utils/errcodes.h,v 1.9 2004/05/14 18:04:02 neilc Exp $
* $PostgreSQL: pgsql/src/include/utils/errcodes.h,v 1.10 2004/05/14 21:42:30 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@ -116,6 +116,7 @@
#define ERRCODE_ESCAPE_CHARACTER_CONFLICT MAKE_SQLSTATE('2','2', '0','0','B')
#define ERRCODE_INDICATOR_OVERFLOW MAKE_SQLSTATE('2','2', '0','2','2')
#define ERRCODE_INTERVAL_FIELD_OVERFLOW MAKE_SQLSTATE('2','2', '0','1','5')
#define ERRCODE_INVALID_ARGUMENT_FOR_WIDTH_BUCKET_FUNCTION MAKE_SQLSTATE('2','2', '0', '1', 'G')
#define ERRCODE_INVALID_CHARACTER_VALUE_FOR_CAST MAKE_SQLSTATE('2','2', '0','1','8')
#define ERRCODE_INVALID_DATETIME_FORMAT MAKE_SQLSTATE('2','2', '0','0','7')
#define ERRCODE_INVALID_ESCAPE_CHARACTER MAKE_SQLSTATE('2','2', '0','1','9')