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Commitba8e20a

Browse files
committed
> Alvaro Herrera <alvherre@atentus.com> writes:
> > I'm looking at pg_dump/common.c:flagInhAttrs() and suspect that it can> > be more or less rewritten completely, and probably should to get rigth> > all the cases mentioned in the past attisinherited discussion. Is this> > desirable for 7.3? It can probably be hacked around and the rewrite> > kept for 7.4, but I think it will be much simpler after the rewrite.>> If it's a bug then it's fair game to fix in 7.3. But keep in mind that> pg_dump has to behave at least somewhat sanely when called against older> servers ... will your rewrite behave reasonably if the server does not> offer attinhcount values?Nah. I don't think it's worth it: I had forgotten that older versionsshould be supported. I just left the code as is and added aversion-specific test.This patch allows pg_dump to dump correctly local definition of columns.In particular,CREATE TABLE p1 (f1 int, f2 int);CREATE TABLE p2 (f1 int);CREATE TABLE c () INHERITS (p1, p2);ALTER TABLE ONLY p1 DROP COLUMN f1;CREATE TABLE p3 (f1 int);CREATE TABLE c2 (f1 int) INHERITS (p3);Will be dumped asCREATE TABLE p1 (f2 int);CREATE TABLE p2 (f1 int);CREATE TABLE c (f1 int) INHERITS (p1, p2);CREATE TABLE c2 (f1 int) INHERITS (p3);(Previous version will dumpCREATE TABLE c () INHERITS (p1, p2)CREATE TABLE c2 () INHERITS (p3) )Alvaro Herrera
1 parentd015dcb commitba8e20a

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3 files changed

+23
-10
lines changed

3 files changed

+23
-10
lines changed

‎src/bin/pg_dump/common.c‎

Lines changed: 13 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,7 @@
1111
*
1212
*
1313
* IDENTIFICATION
14-
* $Header: /cvsroot/pgsql/src/bin/pg_dump/common.c,v 1.70 2002/09/0420:31:34 momjian Exp $
14+
* $Header: /cvsroot/pgsql/src/bin/pg_dump/common.c,v 1.71 2002/10/09 16:20:25 momjian Exp $
1515
*
1616
*-------------------------------------------------------------------------
1717
*/
@@ -284,16 +284,18 @@ flagInhAttrs(TableInfo *tblinfo, int numTables,
284284
if (numParents==0)
285285
continue;/* nothing to see here, move along */
286286

287-
/*
287+
/*----------------------------------------------------------------
288288
* For each attr, check the parent info: if no parent has an attr
289289
* with the same name, then it's not inherited. If there *is* an
290290
* attr with the same name, then only dump it if:
291291
*
292-
* - it is NOT NULL and zero parents are NOT NULL OR - it has a
293-
* default value AND the default value does not match all parent
294-
* default values, or no parents specify a default.
292+
* - it is NOT NULL and zero parents are NOT NULL
293+
* OR
294+
* - it has a default value AND the default value does not match
295+
* all parent default values, or no parents specify a default.
295296
*
296297
* See discussion on -hackers around 2-Apr-2001.
298+
*----------------------------------------------------------------
297299
*/
298300
for (j=0;j<tblinfo[i].numatts;j++)
299301
{
@@ -359,6 +361,12 @@ flagInhAttrs(TableInfo *tblinfo, int numTables,
359361
tblinfo[i].inhAttrs[j]= false;
360362
tblinfo[i].inhNotNull[j]= false;
361363
}
364+
365+
/* Clear it if attr has local definition */
366+
if (g_fout->remoteVersion >=70300&&tblinfo[i].attislocal[j])
367+
{
368+
tblinfo[i].inhAttrs[j]= false;
369+
}
362370
}
363371
}
364372
}

‎src/bin/pg_dump/pg_dump.c‎

Lines changed: 8 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -22,7 +22,7 @@
2222
*
2323
*
2424
* IDENTIFICATION
25-
* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.301 2002/09/24 23:14:25tgl Exp $
25+
* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.302 2002/10/09 16:20:25momjian Exp $
2626
*
2727
*-------------------------------------------------------------------------
2828
*/
@@ -2356,6 +2356,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
23562356
inti_attnotnull;
23572357
inti_atthasdef;
23582358
inti_attisdropped;
2359+
inti_attislocal;
23592360
PGresult*res;
23602361
intntups;
23612362
boolhasdefaults;
@@ -2397,7 +2398,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
23972398
if (g_fout->remoteVersion >=70300)
23982399
{
23992400
appendPQExpBuffer(q,"SELECT attnum, attname, atttypmod, attstattarget, "
2400-
"attnotnull, atthasdef, attisdropped, "
2401+
"attnotnull, atthasdef, attisdropped, attislocal, "
24012402
"pg_catalog.format_type(atttypid,atttypmod) as atttypname "
24022403
"from pg_catalog.pg_attribute a "
24032404
"where attrelid = '%s'::pg_catalog.oid "
@@ -2413,7 +2414,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
24132414
* been explicitly set or was just a default.
24142415
*/
24152416
appendPQExpBuffer(q,"SELECT attnum, attname, atttypmod, -1 as attstattarget, "
2416-
"attnotnull, atthasdef, false as attisdropped, "
2417+
"attnotnull, atthasdef, false as attisdropped,null as attislocal,"
24172418
"format_type(atttypid,atttypmod) as atttypname "
24182419
"from pg_attribute a "
24192420
"where attrelid = '%s'::oid "
@@ -2425,7 +2426,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
24252426
{
24262427
/* format_type not available before 7.1 */
24272428
appendPQExpBuffer(q,"SELECT attnum, attname, atttypmod, -1 as attstattarget, "
2428-
"attnotnull, atthasdef, false as attisdropped, "
2429+
"attnotnull, atthasdef, false as attisdropped,null as attislocal,"
24292430
"(select typname from pg_type where oid = atttypid) as atttypname "
24302431
"from pg_attribute a "
24312432
"where attrelid = '%s'::oid "
@@ -2451,13 +2452,15 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
24512452
i_attnotnull=PQfnumber(res,"attnotnull");
24522453
i_atthasdef=PQfnumber(res,"atthasdef");
24532454
i_attisdropped=PQfnumber(res,"attisdropped");
2455+
i_attislocal=PQfnumber(res,"attislocal");
24542456

24552457
tbinfo->numatts=ntups;
24562458
tbinfo->attnames= (char**)malloc(ntups*sizeof(char*));
24572459
tbinfo->atttypnames= (char**)malloc(ntups*sizeof(char*));
24582460
tbinfo->atttypmod= (int*)malloc(ntups*sizeof(int));
24592461
tbinfo->attstattarget= (int*)malloc(ntups*sizeof(int));
24602462
tbinfo->attisdropped= (bool*)malloc(ntups*sizeof(bool));
2463+
tbinfo->attislocal= (bool*)malloc(ntups*sizeof(bool));
24612464
tbinfo->attisserial= (bool*)malloc(ntups*sizeof(bool));
24622465
tbinfo->notnull= (bool*)malloc(ntups*sizeof(bool));
24632466
tbinfo->adef_expr= (char**)malloc(ntups*sizeof(char*));
@@ -2473,6 +2476,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
24732476
tbinfo->atttypmod[j]=atoi(PQgetvalue(res,j,i_atttypmod));
24742477
tbinfo->attstattarget[j]=atoi(PQgetvalue(res,j,i_attstattarget));
24752478
tbinfo->attisdropped[j]= (PQgetvalue(res,j,i_attisdropped)[0]=='t');
2479+
tbinfo->attislocal[j]= (PQgetvalue(res,j,i_attislocal)[0]=='t');
24762480
tbinfo->attisserial[j]= false;/* fix below */
24772481
tbinfo->notnull[j]= (PQgetvalue(res,j,i_attnotnull)[0]=='t');
24782482
tbinfo->adef_expr[j]=NULL;/* fix below */

‎src/bin/pg_dump/pg_dump.h‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@
66
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
77
* Portions Copyright (c) 1994, Regents of the University of California
88
*
9-
* $Id: pg_dump.h,v 1.99 2002/09/0420:31:35 momjian Exp $
9+
* $Id: pg_dump.h,v 1.100 2002/10/09 16:20:25 momjian Exp $
1010
*
1111
*-------------------------------------------------------------------------
1212
*/
@@ -129,6 +129,7 @@ typedef struct _tableInfo
129129
int*atttypmod;/* type-specific type modifiers */
130130
int*attstattarget;/* attribute statistics targets */
131131
bool*attisdropped;/* true if attr is dropped; don't dump it */
132+
bool*attislocal;/* true if attr has local definition */
132133
bool*attisserial;/* true if attr is serial or bigserial */
133134

134135
/*

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