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Add int2-to-int8 and int8-to-int2 conversion routines. Needed to avoid 

breaking existing pg_dump scripts, which try to assign the result of
count(*) to an int2 variable.  catversion bumped.
This commit is contained in:
Tom Lane 2001-10-25 14:10:07 +00:00
parent 92e8282229
commit a0cd991987
4 changed files with 36 additions and 5 deletions
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25
src/backend/utils/adt/int8.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/int8.c,v 1.34 2001/10/25 05:49:44 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/int8.c,v 1.35 2001/10/25 14:10:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -697,6 +697,29 @@ int84(PG_FUNCTION_ARGS)
PG_RETURN_INT32(result);
}
Datum
int28(PG_FUNCTION_ARGS)
{
int16 val = PG_GETARG_INT16(0);
PG_RETURN_INT64((int64) val);
}
Datum
int82(PG_FUNCTION_ARGS)
{
int64 val = PG_GETARG_INT64(0);
int16 result;
result = (int16) val;
/* Test for overflow by reverse-conversion. */
if ((int64) result != val)
elog(ERROR, "int8 conversion to int2 is out of range");
PG_RETURN_INT16(result);
}
Datum
i8tod(PG_FUNCTION_ARGS)
{

4
src/include/catalog/catversion.h
View File

@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: catversion.h,v 1.100 2001/10/25 05:49:56 momjian Exp $
* $Id: catversion.h,v 1.101 2001/10/25 14:10:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -53,5 +53,5 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 200110181
#define CATALOG_VERSION_NO 200110251
#endif

7
src/include/catalog/pg_proc.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_proc.h,v 1.218 2001/10/25 05:49:57 momjian Exp $
* $Id: pg_proc.h,v 1.219 2001/10/25 14:10:06 tgl Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -885,6 +885,11 @@ DESCR("convert int8 to float8");
DATA(insert OID = 483 ( int8 PGUID 12 f t t t 1 f 20 "701" 100 0 0 100 dtoi8 - ));
DESCR("convert float8 to int8");
DATA(insert OID = 714 ( int2 PGUID 12 f t t t 1 f 21 "20" 100 0 0 100 int82 - ));
DESCR("convert int8 to int2");
DATA(insert OID = 754 ( int8 PGUID 12 f t t t 1 f 20 "21" 100 0 0 100 int28 - ));
DESCR("convert int2 to int8");
/* OIDS 500 - 599 */
/* OIDS 600 - 699 */

5
src/include/utils/int8.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: int8.h,v 1.28 2001/10/25 05:50:10 momjian Exp $
* $Id: int8.h,v 1.29 2001/10/25 14:10:07 tgl Exp $
*
* NOTES
* These data types are supported on all 64-bit architectures, and may
@ -98,6 +98,9 @@ extern Datum int48div(PG_FUNCTION_ARGS);
extern Datum int48(PG_FUNCTION_ARGS);
extern Datum int84(PG_FUNCTION_ARGS);
extern Datum int28(PG_FUNCTION_ARGS);
extern Datum int82(PG_FUNCTION_ARGS);
extern Datum i8tod(PG_FUNCTION_ARGS);
extern Datum dtoi8(PG_FUNCTION_ARGS);