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Commitc70e606

Browse files
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Includes:
- LIKE <subtable> [ INCLUDING DEFAULTS | EXCLUDING DEFAULTS ]- Quick cleanup of analyze.c function prototypes.- New non-reserved keywords (INCLUDING, EXCLUDING, DEFAULTS), SQL 200XOpted not to extend for check constraints at this time.As per the definition that it's user defined columns, OIDs are NOTinherited.Doc and Source patches attached.--Rod Taylor <rbt@rbt.ca>
1 parentdbca370 commitc70e606

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12 files changed

+277
-25
lines changed

12 files changed

+277
-25
lines changed

‎contrib/Makefile‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
# $Header: /cvsroot/pgsql/contrib/Makefile,v 1.41 2003/03/20 18:14:46 momjian Exp $
1+
# $Header: /cvsroot/pgsql/contrib/Makefile,v 1.42 2003/06/25 03:40:17 momjian Exp $
22

33
subdir = contrib
44
top_builddir = ..
@@ -13,7 +13,6 @@ WANTED_DIRS = \
1313
dblink\
1414
dbmirror\
1515
dbsize\
16-
earthdistance\
1716
findoidjoins\
1817
fulltextindex\
1918
fuzzystrmatch\

‎src/backend/catalog/sql_features.txt‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -308,7 +308,7 @@ T121WITH (excluding RECURSIVE) in query expressionNO
308308
T131Recursive queryNO
309309
T141SIMILAR predicateYES
310310
T151DISTINCT predicateYES
311-
T171LIKE clause in table definitionNO
311+
T171LIKE clause in table definitionYES
312312
T191Referential action RESTRICTYES
313313
T201Comparable data types for referential constraintsYES
314314
T211Basic trigger capabilityNO

‎src/backend/nodes/copyfuncs.c‎

Lines changed: 15 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@
1515
* Portions Copyright (c) 1994, Regents of the University of California
1616
*
1717
* IDENTIFICATION
18-
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.253 2003/06/24 23:14:43 momjian Exp $
18+
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.254 2003/06/25 03:40:17 momjian Exp $
1919
*
2020
*-------------------------------------------------------------------------
2121
*/
@@ -1731,6 +1731,17 @@ _copyCreateStmt(CreateStmt *from)
17311731
returnnewnode;
17321732
}
17331733

1734+
staticInhRelation*
1735+
_copyInhRelation(InhRelation*from)
1736+
{
1737+
InhRelation*newnode=makeNode(InhRelation);
1738+
1739+
COPY_NODE_FIELD(relation);
1740+
COPY_SCALAR_FIELD(including_defaults);
1741+
1742+
returnnewnode;
1743+
}
1744+
17341745
staticDefineStmt*
17351746
_copyDefineStmt(DefineStmt*from)
17361747
{
@@ -2693,6 +2704,9 @@ copyObject(void *from)
26932704
caseT_CreateStmt:
26942705
retval=_copyCreateStmt(from);
26952706
break;
2707+
caseT_InhRelation:
2708+
retval=_copyInhRelation(from);
2709+
break;
26962710
caseT_DefineStmt:
26972711
retval=_copyDefineStmt(from);
26982712
break;

‎src/backend/nodes/equalfuncs.c‎

Lines changed: 13 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@
1818
* Portions Copyright (c) 1994, Regents of the University of California
1919
*
2020
* IDENTIFICATION
21-
* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.196 2003/06/24 23:14:43 momjian Exp $
21+
* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.197 2003/06/25 03:40:17 momjian Exp $
2222
*
2323
*-------------------------------------------------------------------------
2424
*/
@@ -785,6 +785,15 @@ _equalCreateStmt(CreateStmt *a, CreateStmt *b)
785785
return true;
786786
}
787787

788+
staticbool
789+
_equalInhRelation(InhRelation*a,InhRelation*b)
790+
{
791+
COMPARE_NODE_FIELD(relation);
792+
COMPARE_SCALAR_FIELD(including_defaults);
793+
794+
return true;
795+
}
796+
788797
staticbool
789798
_equalDefineStmt(DefineStmt*a,DefineStmt*b)
790799
{
@@ -1807,6 +1816,9 @@ equal(void *a, void *b)
18071816
caseT_CreateStmt:
18081817
retval=_equalCreateStmt(a,b);
18091818
break;
1819+
caseT_InhRelation:
1820+
retval=_equalInhRelation(a,b);
1821+
break;
18101822
caseT_DefineStmt:
18111823
retval=_equalDefineStmt(a,b);
18121824
break;

‎src/backend/parser/analyze.c‎

Lines changed: 132 additions & 6 deletions
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-
*$Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.275 2003/06/16 02:03:37 tgl Exp $
9+
*$Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.276 2003/06/2503:40:17 momjian Exp $
1010
*
1111
*-------------------------------------------------------------------------
1212
*/
@@ -21,6 +21,7 @@
2121
#include"catalog/pg_index.h"
2222
#include"catalog/pg_type.h"
2323
#include"commands/prepare.h"
24+
#include"miscadmin.h"
2425
#include"nodes/makefuncs.h"
2526
#include"optimizer/clauses.h"
2627
#include"optimizer/var.h"
@@ -37,6 +38,7 @@
3738
#include"parser/parse_type.h"
3839
#include"parser/parse_expr.h"
3940
#include"rewrite/rewriteManip.h"
41+
#include"utils/acl.h"
4042
#include"utils/builtins.h"
4143
#include"utils/fmgroids.h"
4244
#include"utils/lsyscache.h"
@@ -112,13 +114,15 @@ static Query *transformCreateStmt(ParseState *pstate, CreateStmt *stmt,
112114
staticQuery*transformAlterTableStmt(ParseState*pstate,AlterTableStmt*stmt,
113115
List**extras_before,List**extras_after);
114116
staticvoidtransformColumnDefinition(ParseState*pstate,
115-
CreateStmtContext*cxt,
116-
ColumnDef*column);
117+
CreateStmtContext*cxt,
118+
ColumnDef*column);
117119
staticvoidtransformTableConstraint(ParseState*pstate,
118-
CreateStmtContext*cxt,
119-
Constraint*constraint);
120+
CreateStmtContext*cxt,
121+
Constraint*constraint);
122+
staticvoidtransformInhRelation(ParseState*pstate,CreateStmtContext*cxt,
123+
InhRelation*inhrelation);
120124
staticvoidtransformIndexConstraints(ParseState*pstate,
121-
CreateStmtContext*cxt);
125+
CreateStmtContext*cxt);
122126
staticvoidtransformFKConstraints(ParseState*pstate,
123127
CreateStmtContext*cxt,
124128
boolisAddConstraint);
@@ -880,6 +884,11 @@ transformCreateStmt(ParseState *pstate, CreateStmt *stmt,
880884
cxt.fkconstraints=lappend(cxt.fkconstraints,element);
881885
break;
882886

887+
caseT_InhRelation:
888+
transformInhRelation(pstate,&cxt,
889+
(InhRelation*)element);
890+
break;
891+
883892
default:
884893
elog(ERROR,"parser: unrecognized node (internal error)");
885894
}
@@ -1146,6 +1155,123 @@ transformTableConstraint(ParseState *pstate, CreateStmtContext *cxt,
11461155
}
11471156
}
11481157

1158+
/*
1159+
* transformInhRelation
1160+
*
1161+
* Change the LIKE <subtable> portion of a CREATE TABLE statement into the
1162+
* column definitions which recreate the user defined column portions of <subtable>.
1163+
*/
1164+
staticvoid
1165+
transformInhRelation(ParseState*pstate,CreateStmtContext*cxt,
1166+
InhRelation*inhRelation)
1167+
{
1168+
AttrNumberparent_attno;
1169+
1170+
Relationrelation;
1171+
TupleDesctupleDesc;
1172+
TupleConstr*constr;
1173+
AclResultaclresult;
1174+
1175+
relation=heap_openrv(inhRelation->relation,AccessShareLock);
1176+
1177+
if (relation->rd_rel->relkind!=RELKIND_RELATION)
1178+
elog(ERROR,"CREATE TABLE: inherited relation \"%s\" is not a table",
1179+
inhRelation->relation->relname);
1180+
1181+
/*
1182+
* Check for SELECT privilages
1183+
*/
1184+
aclresult=pg_class_aclcheck(RelationGetRelid(relation),GetUserId(),
1185+
ACL_SELECT);
1186+
if (aclresult!=ACLCHECK_OK)
1187+
aclcheck_error(aclresult,RelationGetRelationName(relation));
1188+
1189+
tupleDesc=RelationGetDescr(relation);
1190+
constr=tupleDesc->constr;
1191+
1192+
/*
1193+
* Insert the inherited attributes into the cxt for the
1194+
* new table definition.
1195+
*/
1196+
for (parent_attno=1;parent_attno <=tupleDesc->natts;
1197+
parent_attno++)
1198+
{
1199+
Form_pg_attributeattribute=tupleDesc->attrs[parent_attno-1];
1200+
char*attributeName=NameStr(attribute->attname);
1201+
ColumnDef*def;
1202+
TypeName*typename;
1203+
1204+
/*
1205+
* Ignore dropped columns in the parent.
1206+
*/
1207+
if (attribute->attisdropped)
1208+
continue;
1209+
1210+
/*
1211+
* Create a new inherited column.
1212+
*
1213+
* For constraints, ONLY the NOT NULL constraint is inherited
1214+
* by the new column definition per SQL99.
1215+
*/
1216+
def=makeNode(ColumnDef);
1217+
def->colname=pstrdup(attributeName);
1218+
typename=makeNode(TypeName);
1219+
typename->typeid=attribute->atttypid;
1220+
typename->typmod=attribute->atttypmod;
1221+
def->typename=typename;
1222+
def->inhcount=0;
1223+
def->is_local= false;
1224+
def->is_not_null=attribute->attnotnull;
1225+
def->raw_default=NULL;
1226+
def->cooked_default=NULL;
1227+
def->constraints=NIL;
1228+
def->support=NULL;
1229+
1230+
/*
1231+
* Add to column list
1232+
*/
1233+
cxt->columns=lappend(cxt->columns,def);
1234+
1235+
/*
1236+
* Copy default if any, and the default has been requested
1237+
*/
1238+
if (attribute->atthasdef&&inhRelation->including_defaults)
1239+
{
1240+
char*this_default=NULL;
1241+
AttrDefault*attrdef;
1242+
inti;
1243+
1244+
/* Find default in constraint structure */
1245+
Assert(constr!=NULL);
1246+
attrdef=constr->defval;
1247+
for (i=0;i<constr->num_defval;i++)
1248+
{
1249+
if (attrdef[i].adnum==parent_attno)
1250+
{
1251+
this_default=attrdef[i].adbin;
1252+
break;
1253+
}
1254+
}
1255+
Assert(this_default!=NULL);
1256+
1257+
/*
1258+
* If default expr could contain any vars, we'd need to
1259+
* fix 'em, but it can't; so default is ready to apply to
1260+
* child.
1261+
*/
1262+
1263+
def->cooked_default=pstrdup(this_default);
1264+
}
1265+
}
1266+
1267+
/*
1268+
* Close the parent rel, but keep our AccessShareLock on it until
1269+
* xact commit. That will prevent someone else from deleting or
1270+
* ALTERing the parent before the child is committed.
1271+
*/
1272+
heap_close(relation,NoLock);
1273+
}
1274+
11491275
staticvoid
11501276
transformIndexConstraints(ParseState*pstate,CreateStmtContext*cxt)
11511277
{

‎src/backend/parser/gram.y‎

Lines changed: 27 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,7 @@
1111
*
1212
*
1313
* IDENTIFICATION
14-
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.418 2003/06/24 23:14:43 momjian Exp $
14+
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.419 2003/06/25 03:40:18 momjian Exp $
1515
*
1616
* HISTORY
1717
* AUTHORDATEMAJOR EVENT
@@ -165,6 +165,8 @@ static void doNegateFloat(Value *v);
165165
%type<boolean>opt_forceopt_or_replacetransaction_access_mode
166166
opt_grant_grant_optionopt_revoke_grant_option
167167

168+
%type<boolean>like_including_defaults
169+
168170
%type<list>user_list
169171

170172
%type<list>OptGroupList
@@ -336,11 +338,11 @@ static void doNegateFloat(Value *v);
336338
CREATEUSER CROSS CURRENT_DATE CURRENT_TIME
337339
CURRENT_TIMESTAMP CURRENT_USER CURSOR CYCLE
338340

339-
DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT
341+
DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT DEFAULTS
340342
DEFERRABLE DEFERRED DEFINER DELETE_P DELIMITER DELIMITERS
341343
DESC DISTINCT DO DOMAIN_P DOUBLE_P DROP
342344

343-
EACH ELSE ENCODING ENCRYPTED END_P ESCAPE EXCEPT
345+
EACH ELSE ENCODING ENCRYPTED END_P ESCAPE EXCEPT EXCLUDING
344346
EXCLUSIVE EXECUTE EXISTS EXPLAIN EXTERNAL EXTRACT
345347

346348
FALSE_P FETCH FIRST_P FLOAT_P FOR FORCE FOREIGN FORWARD
@@ -350,7 +352,7 @@ static void doNegateFloat(Value *v);
350352

351353
HANDLER HAVING HOLD HOUR_P
352354

353-
ILIKE IMMEDIATE IMMUTABLE IMPLICIT_P IN_P INCREMENT
355+
ILIKE IMMEDIATE IMMUTABLE IMPLICIT_P IN_PINCLUDINGINCREMENT
354356
INDEX INHERITS INITIALLY INNER_P INOUT INPUT_P
355357
INSENSITIVE INSERT INSTEAD INT_P INTEGER INTERSECT
356358
INTERVAL INTO INVOKER IS ISNULL ISOLATION
@@ -1642,18 +1644,31 @@ ConstraintAttr:
16421644
;
16431645

16441646

1645-
/* SQL99 supports wholesale borrowing of a table definition via the LIKE clause.
1647+
/*
1648+
* SQL99 supports wholesale borrowing of a table definition via the LIKE clause.
16461649
* This seems to be a poor man's inheritance capability, with the resulting
16471650
* tables completely decoupled except for the original commonality in definitions.
1648-
* Seems to have much in common with CREATE TABLE AS. - thomas 2002-06-19
1651+
*
1652+
* This is very similar to CREATE TABLE AS except for the INCLUDING DEFAULTS extension
1653+
* which is a part of SQL 200N
16491654
*/
1650-
TableLikeClause:LIKEany_name
1655+
TableLikeClause:
1656+
LIKEqualified_namelike_including_defaults
16511657
{
1652-
elog(ERROR,"LIKE in table definitions not yet supported");
1653-
$$ =NULL;
1658+
InhRelation *n = makeNode(InhRelation);
1659+
n->relation =$2;
1660+
n->including_defaults =$3;
1661+
1662+
$$ = (Node *)n;
16541663
}
16551664
;
16561665

1666+
like_including_defaults:
1667+
INCLUDINGDEFAULTS{$$ =true; }
1668+
|EXCLUDINGDEFAULTS{$$ =false; }
1669+
|/* EMPTY*/{$$ =false; }
1670+
;
1671+
16571672

16581673
/* ConstraintElem specifies constraint syntax which is not embedded into
16591674
*a column definition. ColConstraintElem specifies the embedded form.
@@ -7230,6 +7245,7 @@ unreserved_keyword:
72307245
| DAY_P
72317246
| DEALLOCATE
72327247
| DECLARE
7248+
| DEFAULTS
72337249
| DEFERRED
72347250
| DEFINER
72357251
| DELETE_P
@@ -7242,6 +7258,7 @@ unreserved_keyword:
72427258
| ENCODING
72437259
| ENCRYPTED
72447260
| ESCAPE
7261+
| EXCLUDING
72457262
| EXCLUSIVE
72467263
| EXECUTE
72477264
| EXPLAIN
@@ -7258,6 +7275,7 @@ unreserved_keyword:
72587275
| IMMEDIATE
72597276
| IMMUTABLE
72607277
| IMPLICIT_P
7278+
| INCLUDING
72617279
| INCREMENT
72627280
| INDEX
72637281
| INHERITS

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