On Wed, Mar 30, 2011 at 09:37:56PM -0400, Robert Haas wrote:
> On Wed, Mar 30, 2011 at 9:30 PM, Noah Misch <[email protected]> wrote:
> >> Perhaps it would be reasonable to extend ALTER TABLE .. [NO]
> >> INHERIT to accept a type name as the final argument. ?If used in this
> >> way, it converts a typed table into a regular table or visca versa.
> >
> > Why extend ALTER TABLE ... INHERIT? ?I would have guessed independent
> > syntax.
>
> I just didn't feel the need to invent something new, but we could if
> someone would rather.
>
> >> We could also do it with a direct catalog change, but there are some
> >> dependencies that would need to be frobbed, which makes me a bit
> >> reluctant to go that way.
> >
> > Agreed; it's also an independently-useful capability to have.
>
> Yep.
Implemented as attached. The first patch just adds the ALTER TABLE subcommands
to attach and detach a table from a composite type. A few open questions
concerning typed tables will probably yield minor changes to these subcommands.
I implemented them to be agnostic toward the outcome of those decisions.
The second patch updates pg_dump to use those new subcommands. It's based
significantly on Peter's recent patch. The new bits follow pg_dump's design for
table inheritance.
I tested pg_upgrade of these previously-mentioned test cases:
create type t as (x int, y int);
create table has_a (tcol t);
insert into has_a values ('(1,2)');
table has_a; -- (1,2)
alter type t drop attribute y cascade, add attribute z int cascade;
table has_a; -- (1,)
table has_a; -- after pg_upgrade: (1,2)
create type t as (x int, y int);
create table is_a of t;
alter type t drop attribute y cascade;
create table is_a2 of t;
select * from pg_attribute where attrelid = 'is_a'::regclass;
select * from pg_attribute where attrelid = 'is_a2'::regclass;
create type unused as (x int);
alter type unused drop attribute x;
I also tested a regular dump+reload of the regression database, and a pg_upgrade
of the same. The latter failed further along, due (indirectly) to this failure
to create a TOAST table:
create table p ();
create table ch () inherits (p);
alter table p add column a text;
select oid::regclass,reltoastrelid from pg_class where oid::regclass IN
('p','ch');
insert into ch values (repeat('x', 1000000));
If I "drop table a_star cascade" in the regression database before attempting
pg_upgrade, it completes cleanly.
nm
diff --git a/doc/src/sgml/ref/alter_table.sgml
b/doc/src/sgml/ref/alter_table.sgml
index c194862..4e02438 100644
*** a/doc/src/sgml/ref/alter_table.sgml
--- b/doc/src/sgml/ref/alter_table.sgml
***************
*** 63,68 **** ALTER TABLE <replaceable class="PARAMETER">name</replaceable>
--- 63,70 ----
RESET ( <replaceable class="PARAMETER">storage_parameter</replaceable> [,
... ] )
INHERIT <replaceable class="PARAMETER">parent_table</replaceable>
NO INHERIT <replaceable class="PARAMETER">parent_table</replaceable>
+ OF <replaceable class="PARAMETER">type_name</replaceable>
+ NOT OF
OWNER TO <replaceable class="PARAMETER">new_owner</replaceable>
SET TABLESPACE <replaceable class="PARAMETER">new_tablespace</replaceable>
***************
*** 491,496 **** ALTER TABLE <replaceable class="PARAMETER">name</replaceable>
--- 493,522 ----
</varlistentry>
<varlistentry>
+ <term><literal>OF <replaceable
class="PARAMETER">type_name</replaceable></literal></term>
+ <listitem>
+ <para>
+ This form links the table to a composite type as though <command>CREATE
+ TABLE OF</> had formed it. The table's list of column names and types
+ must precisely match that of the composite type; the presence of
+ an <literal>oid</> system column is permitted to differ. The table must
+ not inherit from any other table. These restrictions ensure
+ that <command>CREATE TABLE OF</> would permit an equivalent table
+ definition.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><literal>NOT OF</literal></term>
+ <listitem>
+ <para>
+ This form dissociates a typed table from its type.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><literal>OWNER</literal></term>
<listitem>
<para>
diff --git a/src/backend/commands/tablecindex bd18db3..0d657a3 100644
*** a/src/backend/commands/tablecmds.c
--- b/src/backend/commands/tablecmds.c
***************
*** 81,86 ****
--- 81,87 ----
#include "utils/snapmgr.h"
#include "utils/syscache.h"
#include "utils/tqual.h"
+ #include "utils/typcache.h"
/*
***************
*** 357,362 **** static void ATExecEnableDisableRule(Relation rel, char
*rulename,
--- 358,366 ----
static void ATPrepAddInherit(Relation child_rel);
static void ATExecAddInherit(Relation child_rel, RangeVar *parent, LOCKMODE
lockmode);
static void ATExecDropInherit(Relation rel, RangeVar *parent, LOCKMODE
lockmode);
+ static void drop_parent_dependency(Oid relid, Oid refclassid, Oid refobjid);
+ static void ATExecAddOf(Relation rel, const TypeName *ofTypename, LOCKMODE
lockmode);
+ static void ATExecDropOf(Relation rel, LOCKMODE lockmode);
static void ATExecGenericOptions(Relation rel, List *options);
static void copy_relation_data(SMgrRelation rel, SMgrRelation dst,
***************
*** 2679,2684 **** AlterTableGetLockLevel(List *cmds)
--- 2683,2698 ----
break;
/*
+ * These subcommands affect implicit row type
conversion. They have
+ * affects similar to CREATE/DROP CAST on queries. We
don't provide
+ * for invalidating parse trees as a result of such
changes. Do
+ * avoid concurrent pg_class updates, though.
+ */
+ case AT_AddOf:
+ case AT_DropOf:
+ cmd_lockmode = ShareUpdateExclusiveLock;
+
+ /*
* These subcommands affect general strategies for
performance and maintenance,
* though don't change the semantic results from normal
data reads and writes.
* Delaying an ALTER TABLE behind currently active
writes only delays the point
***************
*** 2935,2947 **** ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
case AT_EnableAlwaysRule:
case AT_EnableReplicaRule:
case AT_DisableRule:
- ATSimplePermissions(rel, ATT_TABLE);
- /* These commands never recurse */
- /* No command-specific prep needed */
- pass = AT_PASS_MISC;
- break;
case AT_DropInherit: /* NO INHERIT */
ATSimplePermissions(rel, ATT_TABLE);
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
--- 2949,2959 ----
case AT_EnableAlwaysRule:
case AT_EnableReplicaRule:
case AT_DisableRule:
case AT_DropInherit: /* NO INHERIT */
+ case AT_AddOf: /* OF */
+ case AT_DropOf: /* NOT OF */
ATSimplePermissions(rel, ATT_TABLE);
+ /* These commands never recurse */
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
***************
*** 3210,3215 **** ATExecCmd(List **wqueue, AlteredTableInfo *tab, Relation rel,
--- 3222,3233 ----
case AT_DropInherit:
ATExecDropInherit(rel, (RangeVar *) cmd->def, lockmode);
break;
+ case AT_AddOf:
+ ATExecAddOf(rel, (TypeName *) cmd->def, lockmode);
+ break;
+ case AT_DropOf:
+ ATExecDropOf(rel, lockmode);
+ break;
case AT_GenericOptions:
ATExecGenericOptions(rel, (List *) cmd->def);
break;
***************
*** 8333,8340 **** ATExecDropInherit(Relation rel, RangeVar *parent, LOCKMODE
lockmode)
ScanKeyData key[3];
HeapTuple inheritsTuple,
attributeTuple,
! constraintTuple,
! depTuple;
List *connames;
bool found = false;
--- 8351,8357 ----
ScanKeyData key[3];
HeapTuple inheritsTuple,
attributeTuple,
! constraintTuple;
List *connames;
bool found = false;
***************
*** 8500,8510 **** ATExecDropInherit(Relation rel, RangeVar *parent, LOCKMODE
lockmode)
systable_endscan(scan);
heap_close(catalogRelation, RowExclusiveLock);
! /*
! * Drop the dependency
! *
! * There's no convenient way to do this, so go trawling through
pg_depend
! */
catalogRelation = heap_open(DependRelationId, RowExclusiveLock);
ScanKeyInit(&key[0],
--- 8517,8545 ----
systable_endscan(scan);
heap_close(catalogRelation, RowExclusiveLock);
! drop_parent_dependency(RelationGetRelid(rel),
! RelationRelationId,
!
RelationGetRelid(parent_rel));
!
! /* keep our lock on the parent relation until commit */
! heap_close(parent_rel, NoLock);
! }
!
! /*
! * Drop the dependency created by StoreCatalogInheritance1 (CREATE TABLE
! * INHERITS/ALTER TABLE INHERIT -- refclassid will be RelationRelationId) or
! * heap_create_with_catalog (CREATE TABLE OF/ALTER TABLE OF -- refclassid will
! * be TypeRelationId). There's no convenient way to do this, so go trawling
! * through pg_depend.
! */
! static void
! drop_parent_dependency(Oid relid, Oid refclassid, Oid refobjid)
! {
! Relation catalogRelation;
! SysScanDesc scan;
! ScanKeyData key[3];
! HeapTuple depTuple;
!
catalogRelation = heap_open(DependRelationId, RowExclusiveLock);
ScanKeyInit(&key[0],
***************
*** 8514,8520 **** ATExecDropInherit(Relation rel, RangeVar *parent, LOCKMODE
lockmode)
ScanKeyInit(&key[1],
Anum_pg_depend_objid,
BTEqualStrategyNumber, F_OIDEQ,
! ObjectIdGetDatum(RelationGetRelid(rel)));
ScanKeyInit(&key[2],
Anum_pg_depend_objsubid,
BTEqualStrategyNumber, F_INT4EQ,
--- 8549,8555 ----
ScanKeyInit(&key[1],
Anum_pg_depend_objid,
BTEqualStrategyNumber, F_OIDEQ,
! ObjectIdGetDatum(relid));
ScanKeyInit(&key[2],
Anum_pg_depend_objsubid,
BTEqualStrategyNumber, F_INT4EQ,
***************
*** 8527,8534 **** ATExecDropInherit(Relation rel, RangeVar *parent, LOCKMODE
lockmode)
{
Form_pg_depend dep = (Form_pg_depend) GETSTRUCT(depTuple);
! if (dep->refclassid == RelationRelationId &&
! dep->refobjid == RelationGetRelid(parent_rel) &&
dep->refobjsubid == 0 &&
dep->deptype == DEPENDENCY_NORMAL)
simple_heap_delete(catalogRelation, &depTuple->t_self);
--- 8562,8569 ----
{
Form_pg_depend dep = (Form_pg_depend) GETSTRUCT(depTuple);
! if (dep->refclassid == refclassid &&
! dep->refobjid == refobjid &&
dep->refobjsubid == 0 &&
dep->deptype == DEPENDENCY_NORMAL)
simple_heap_delete(catalogRelation, &depTuple->t_self);
***************
*** 8536,8544 **** ATExecDropInherit(Relation rel, RangeVar *parent, LOCKMODE
lockmode)
systable_endscan(scan);
heap_close(catalogRelation, RowExclusiveLock);
! /* keep our lock on the parent relation until commit */
! heap_close(parent_rel, NoLock);
}
/*
--- 8571,8794 ----
systable_endscan(scan);
heap_close(catalogRelation, RowExclusiveLock);
+ }
! /*
! * ALTER TABLE OF
! *
! * Attach a table to a composite type, as though it had been created with
CREATE
! * TABLE OF. All attname, atttypid, atttypmod and attcollation must match.
The
! * subject table must not have inheritance parents. These restrictions ensure
! * that you cannot create a configuration impossible with CREATE TABLE OF
alone.
! */
! static void
! ATExecAddOf(Relation rel, const TypeName *ofTypename, LOCKMODE lockmode)
! {
! Oid relid = RelationGetRelid(rel),
! cycle_relid;
! Type typetuple;
! Form_pg_type typ;
! Oid typeid;
! Relation inheritsRelation,
! relationRelation;
! SysScanDesc scan;
! ScanKeyData key;
! AttrNumber table_attno,
! type_attno;
! TupleDesc typeTupleDesc,
! tableTupleDesc;
! ObjectAddress tableobj,
! typeobj;
! HeapTuple classtuple;
!
! /* Validate the type. */
! typetuple = typenameType(NULL, ofTypename, NULL);
! typ = (Form_pg_type) GETSTRUCT(typetuple);
! typeid = HeapTupleGetOid(typetuple);
!
! if (typ->typtype != TYPTYPE_COMPOSITE)
! ereport(ERROR,
! (errcode(ERRCODE_WRONG_OBJECT_TYPE),
! errmsg("type %s is not a composite type",
! format_type_be(typeid))));
!
! /* Fail if the table has any inheritance parents. */
! inheritsRelation = heap_open(InheritsRelationId, RowExclusiveLock);
! ScanKeyInit(&key,
! Anum_pg_inherits_inhrelid,
! BTEqualStrategyNumber, F_OIDEQ,
! ObjectIdGetDatum(relid));
! scan = systable_beginscan(inheritsRelation, InheritsRelidSeqnoIndexId,
! true, SnapshotNow, 1,
&key);
! if (HeapTupleIsValid(systable_getnext(scan)))
! ereport(ERROR,
! (errcode(ERRCODE_WRONG_OBJECT_TYPE),
! errmsg("typed tables cannot inherit")));
! systable_endscan(scan);
! heap_close(inheritsRelation, RowExclusiveLock);
!
! /*
! * Forbid reloftype cycles. This is subject to the same race condition
as
! * the comparable code in ATExecAddInherit(); see discussion there.
! *
! * As a side effect, open and lock the type relations all the way up the
! * chain, keeping those locks until end of transaction. This prevents a
! * concurrent column change from invalidating our later analysis. We
don't
! * normally take this sort of precaution for row types. Since we're
opening
! * them anyway, we may as well do so.
! */
! cycle_relid = typ->typrelid;
! for (;;)
! {
! Relation typeRelation;
! Oid cycle_typeid;
! HeapTuple tup;
!
! /* Get the next reloftype from the current reloftype's
relation. */
! typeRelation = relation_open(cycle_relid, AccessShareLock);
! cycle_typeid = typeRelation->rd_rel->reloftype;
! relation_close(typeRelation, NoLock);
!
! /* Might be finished. */
! if (!OidIsValid(cycle_typeid)) /* end of the chain */
! break;
! if (cycle_typeid == rel->rd_rel->reltype) /* cycle
detected */
! ereport(ERROR,
! (errcode(ERRCODE_DUPLICATE_TABLE),
! errmsg("circular typed table
relationship not allowed")));
!
! /* Continue up the chain: find the next typrelid. */
! tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(cycle_typeid));
! if (!HeapTupleIsValid(tup)) /* should not happen */
! elog(ERROR, "cache lookup failed for type %u",
cycle_typeid);
! cycle_relid = ((Form_pg_type) GETSTRUCT(tup))->typrelid;
! ReleaseSysCache(tup);
! }
!
! /*
! * Check the tuple descriptors for compatibility. Unlike inheritance,
we
! * require that the order also match. However, attnotnull need not
match.
! * Also unlike inheritance, we do not require matching relhasoids.
! */
! typeTupleDesc = lookup_rowtype_tupdesc(typeid, -1);
! tableTupleDesc = RelationGetDescr(rel);
! table_attno = 1;
! for (type_attno = 1; type_attno <= typeTupleDesc->natts; type_attno++)
! {
! Form_pg_attribute type_attr,
! table_attr;
! const char *type_attname,
! *table_attname;
!
! /* Get the next non-dropped type attribute. */
! type_attr = typeTupleDesc->attrs[type_attno - 1];
! if (type_attr->attisdropped)
! continue;
! type_attname = NameStr(type_attr->attname);
!
! /* Get the next non-dropped table attribute. */
! do
! {
! if (table_attno > tableTupleDesc->natts)
! ereport(ERROR,
!
(errcode(ERRCODE_DATATYPE_MISMATCH),
! errmsg("table is missing
column \"%s\"",
! type_attname)));
! table_attr = tableTupleDesc->attrs[table_attno++ - 1];
! } while (table_attr->attisdropped);
! table_attname = NameStr(table_attr->attname);
!
! /* Compare name. */
! if (strncmp(table_attname, type_attname, NAMEDATALEN) != 0)
! ereport(ERROR,
! (errcode(ERRCODE_DATATYPE_MISMATCH),
! errmsg("table has column \"%s\" where
type requires \"%s\"",
! table_attname,
type_attname)));
!
! /* Compare type. */
! if (table_attr->atttypid != type_attr->atttypid ||
! table_attr->atttypmod != type_attr->atttypmod ||
! table_attr->attcollation != type_attr->attcollation)
! ereport(ERROR,
! (errcode(ERRCODE_DATATYPE_MISMATCH),
! errmsg("table \"%s\" has different
type for column \"%s\"",
!
RelationGetRelationName(rel), type_attname)));
! }
! DecrTupleDescRefCount(typeTupleDesc);
!
! /* Any remaining columns at the end of the table had better be dropped.
*/
! for (; table_attno <= tableTupleDesc->natts; table_attno++)
! {
! Form_pg_attribute table_attr =
tableTupleDesc->attrs[table_attno - 1];
! if (!table_attr->attisdropped)
! ereport(ERROR,
! (errcode(ERRCODE_DATATYPE_MISMATCH),
! errmsg("table has extra column \"%s\"",
!
NameStr(table_attr->attname))));
! }
!
! /* If the table was already typed, drop the existing dependency. */
! if (rel->rd_rel->reloftype)
! drop_parent_dependency(relid, TypeRelationId,
rel->rd_rel->reloftype);
!
! /* Record a dependency on the new type. */
! tableobj.classId = RelationRelationId;
! tableobj.objectId = relid;
! tableobj.objectSubId = 0;
! typeobj.classId = TypeRelationId;
! typeobj.objectId = typeid;
! typeobj.objectSubId = 0;
! recordDependencyOn(&tableobj, &typeobj, DEPENDENCY_NORMAL);
!
! /* Update pg_class.reloftype */
! relationRelation = heap_open(RelationRelationId, RowExclusiveLock);
! classtuple = SearchSysCacheCopy1(RELOID, ObjectIdGetDatum(relid));
! if (!HeapTupleIsValid(classtuple))
! elog(ERROR, "cache lookup failed for relation %u", relid);
! ((Form_pg_class) GETSTRUCT(classtuple))->reloftype = typeid;
! simple_heap_update(relationRelation, &classtuple->t_self, classtuple);
! heap_freetuple(classtuple);
! heap_close(relationRelation, RowExclusiveLock);
!
! ReleaseSysCache(typetuple);
! }
!
! /*
! * ALTER TABLE NOT OF
! *
! * Detach a typed table from its originating type. Just clear reloftype and
! * remove the dependency.
! */
! static void
! ATExecDropOf(Relation rel, LOCKMODE lockmode)
! {
! Oid relid = RelationGetRelid(rel);
! Relation relationRelation;
! HeapTuple tuple;
!
! if (!OidIsValid(rel->rd_rel->reloftype))
! ereport(ERROR,
! (errcode(ERRCODE_WRONG_OBJECT_TYPE),
! errmsg("\"%s\" is not a typed table",
! RelationGetRelationName(rel))));
!
! /*
! * We don't bother to check ownership of the row type --- ownership of
the
! * child is presumed enough rights. No particular lock required on the
! * row type, either.
! */
!
! drop_parent_dependency(relid, TypeRelationId, rel->rd_rel->reloftype);
!
! /* Clear pg_class.reloftype */
! relationRelation = heap_open(RelationRelationId, RowExclusiveLock);
! tuple = SearchSysCacheCopy1(RELOID, ObjectIdGetDatum(relid));
! if (!HeapTupleIsValid(tuple))
! elog(ERROR, "cache lookup failed for relation %u", relid);
! ((Form_pg_class) GETSTRUCT(tuple))->reloftype = InvalidOid;
! simple_heap_update(relationRelation, &tuple->t_self, tuple);
! heap_freetuple(tuple);
! heap_close(relationRelation, RowExclusiveLock);
}
/*
diff --git a/src/backend/parser/gram.y index a22ab66..1e4f8f6 100644
*** a/src/backend/parser/gram.y
--- b/src/backend/parser/gram.y
***************
*** 1933,1938 **** alter_table_cmd:
--- 1933,1955 ----
n->def = (Node *) $3;
$$ = (Node *)n;
}
+ /* ALTER TABLE <name> OF <type_name> */
+ | OF any_name
+ {
+ AlterTableCmd *n =
makeNode(AlterTableCmd);
+ TypeName *def =
makeTypeNameFromNameList($2);
+ def->location = @2;
+ n->subtype = AT_AddOf;
+ n->def = (Node *) def;
+ $$ = (Node *)n;
+ }
+ /* ALTER TABLE <name> NOT OF */
+ | NOT OF
+ {
+ AlterTableCmd *n =
makeNode(AlterTableCmd);
+ n->subtype = AT_DropOf;
+ $$ = (Node *)n;
+ }
/* ALTER TABLE <name> OWNER TO RoleId */
| OWNER TO RoleId
{
diff --git a/src/include/nodes/pindex d9eac76..e28c189 100644
*** a/src/include/nodes/parsenodes.h
--- b/src/include/nodes/parsenodes.h
***************
*** 1218,1223 **** typedef enum AlterTableType
--- 1218,1225 ----
AT_DisableRule, /* DISABLE RULE name */
AT_AddInherit, /* INHERIT parent */
AT_DropInherit, /* NO INHERIT parent */
+ AT_AddOf, /* OF <type_name> */
+ AT_DropOf, /* NOT OF */
AT_GenericOptions, /* OPTIONS (...) */
} AlterTableType;
diff --git a/src/test/regress/expecteindex d7d1b64..b7b0b8b 100644
*** a/src/test/regress/expected/alter_table.out
--- b/src/test/regress/expected/alter_table.out
***************
*** 1929,1931 **** Typed table of type: test_type2
--- 1929,1970 ----
CREATE TYPE test_type_empty AS ();
DROP TYPE test_type_empty;
+ --
+ -- typed tables: OF / NOT OF
+ --
+ CREATE TYPE tt_t0 AS (z inet, x int, y numeric(8,2));
+ ALTER TYPE tt_t0 DROP ATTRIBUTE z;
+ CREATE TABLE tt0 (x int NOT NULL, y numeric(8,2)); -- OK
+ CREATE TABLE tt1 (x int, y bigint); --
wrong base type
+ CREATE TABLE tt2 (x int, y numeric(9,2)); -- wrong typmod
+ CREATE TABLE tt3 (y numeric(8,2), x int); -- wrong column
order
+ CREATE TABLE tt4 (x int);
-- too few columns
+ CREATE TABLE tt5 (x int, y numeric(8,2), z int); -- too few columns
+ CREATE TABLE tt6 () INHERITS (tt0); --
can't have a parent
+ CREATE TABLE tt7 (x int, q text, y numeric(8,2)) WITH OIDS;
+ ALTER TABLE tt7 DROP q;
-- OK
+ ALTER TABLE tt0 OF tt_t0;
+ ALTER TABLE tt1 OF tt_t0;
+ ERROR: table "tt1" has different type for column "y"
+ ALTER TABLE tt2 OF tt_t0;
+ ERROR: table "tt2" has different type for column "y"
+ ALTER TABLE tt3 OF tt_t0;
+ ERROR: table has column "y" where type requires "x"
+ ALTER TABLE tt4 OF tt_t0;
+ ERROR: table is missing column "y"
+ ALTER TABLE tt5 OF tt_t0;
+ ERROR: table has extra column "z"
+ ALTER TABLE tt6 OF tt_t0;
+ ERROR: typed tables cannot inherit
+ ALTER TABLE tt7 OF tt_t0;
+ ALTER TABLE tt7 OF tt0; -- reassign an already-typed
table
+ ALTER TABLE tt0 OF tt7; -- no cycles allowed, though
+ ERROR: circular typed table relationship not allowed
+ ALTER TABLE tt7 NOT OF;
+ \d tt7
+ Table "public.tt7"
+ Column | Type | Modifiers
+ --------+--------------+-----------
+ x | integer |
+ y | numeric(8,2) |
+
diff --git a/src/test/regress/sql/alter_table.sqindex 749584d..bd9dab1 100644
*** a/src/test/regress/sql/alter_table.sql
--- b/src/test/regress/sql/alter_table.sql
***************
*** 1359,1361 **** ALTER TYPE test_type2 RENAME ATTRIBUTE a TO aa CASCADE;
--- 1359,1392 ----
CREATE TYPE test_type_empty AS ();
DROP TYPE test_type_empty;
+
+ --
+ -- typed tables: OF / NOT OF
+ --
+
+ CREATE TYPE tt_t0 AS (z inet, x int, y numeric(8,2));
+ ALTER TYPE tt_t0 DROP ATTRIBUTE z;
+ CREATE TABLE tt0 (x int NOT NULL, y numeric(8,2)); -- OK
+ CREATE TABLE tt1 (x int, y bigint); --
wrong base type
+ CREATE TABLE tt2 (x int, y numeric(9,2)); -- wrong typmod
+ CREATE TABLE tt3 (y numeric(8,2), x int); -- wrong column
order
+ CREATE TABLE tt4 (x int);
-- too few columns
+ CREATE TABLE tt5 (x int, y numeric(8,2), z int); -- too few columns
+ CREATE TABLE tt6 () INHERITS (tt0); --
can't have a parent
+ CREATE TABLE tt7 (x int, q text, y numeric(8,2)) WITH OIDS;
+ ALTER TABLE tt7 DROP q;
-- OK
+
+ ALTER TABLE tt0 OF tt_t0;
+ ALTER TABLE tt1 OF tt_t0;
+ ALTER TABLE tt2 OF tt_t0;
+ ALTER TABLE tt3 OF tt_t0;
+ ALTER TABLE tt4 OF tt_t0;
+ ALTER TABLE tt5 OF tt_t0;
+ ALTER TABLE tt6 OF tt_t0;
+ ALTER TABLE tt7 OF tt_t0;
+
+ ALTER TABLE tt7 OF tt0; -- reassign an already-typed
table
+ ALTER TABLE tt0 OF tt7; -- no cycles allowed, though
+
+ ALTER TABLE tt7 NOT OF;
+ \d tt7
diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index 1ccdb4d..41ec645 100644
*** a/src/bin/pg_dump/pg_dump.c
--- b/src/bin/pg_dump/pg_dump.c
***************
*** 7957,7962 **** static void
--- 7957,7963 ----
dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
{
PQExpBuffer q = createPQExpBuffer();
+ PQExpBuffer dropped = createPQExpBuffer();
PQExpBuffer delq = createPQExpBuffer();
PQExpBuffer labelq = createPQExpBuffer();
PQExpBuffer query = createPQExpBuffer();
***************
*** 7964,7971 **** dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
--- 7965,7976 ----
int ntups;
int i_attname;
int i_atttypdefn;
+ int i_attisdropped;
+ int i_attlen;
+ int i_attalign;
int i_typrelid;
int i;
+ int actual_atts;
/* Set proper schema search path so type references list correctly */
selectSourceSchema(tyinfo->dobj.namespace->dobj.name);
***************
*** 7975,7985 **** dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
appendPQExpBuffer(query, "SELECT a.attname, "
"pg_catalog.format_type(a.atttypid, a.atttypmod) AS
atttypdefn, "
! "typrelid "
"FROM pg_catalog.pg_type t,
pg_catalog.pg_attribute a "
"WHERE t.oid = '%u'::pg_catalog.oid "
"AND a.attrelid = t.typrelid "
- "AND NOT a.attisdropped "
"ORDER BY a.attnum ",
tyinfo->dobj.catId.oid);
--- 7980,7989 ----
appendPQExpBuffer(query, "SELECT a.attname, "
"pg_catalog.format_type(a.atttypid, a.atttypmod) AS
atttypdefn, "
! "a.attisdropped, a.attlen,
a.attalign, typrelid "
"FROM pg_catalog.pg_type t,
pg_catalog.pg_attribute a "
"WHERE t.oid = '%u'::pg_catalog.oid "
"AND a.attrelid = t.typrelid "
"ORDER BY a.attnum ",
tyinfo->dobj.catId.oid);
***************
*** 7990,7995 **** dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
--- 7994,8002 ----
i_attname = PQfnumber(res, "attname");
i_atttypdefn = PQfnumber(res, "atttypdefn");
+ i_attisdropped = PQfnumber(res, "attisdropped");
+ i_attlen = PQfnumber(res, "attlen");
+ i_attalign = PQfnumber(res, "attalign");
i_typrelid = PQfnumber(res, "typrelid");
if (binary_upgrade)
***************
*** 8003,8021 **** dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
appendPQExpBuffer(q, "CREATE TYPE %s AS (",
fmtId(tyinfo->dobj.name));
for (i = 0; i < ntups; i++)
{
char *attname;
char *atttypdefn;
attname = PQgetvalue(res, i, i_attname);
atttypdefn = PQgetvalue(res, i, i_atttypdefn);
! appendPQExpBuffer(q, "\n\t%s %s", fmtId(attname), atttypdefn);
! if (i < ntups - 1)
appendPQExpBuffer(q, ",");
}
appendPQExpBuffer(q, "\n);\n");
/*
* DROP must be fully qualified in case same name appears in pg_catalog
--- 8010,8064 ----
appendPQExpBuffer(q, "CREATE TYPE %s AS (",
fmtId(tyinfo->dobj.name));
+ actual_atts = 0;
for (i = 0; i < ntups; i++)
{
char *attname;
char *atttypdefn;
+ bool attisdropped;
+ char *attlen;
+ char *attalign;
attname = PQgetvalue(res, i, i_attname);
atttypdefn = PQgetvalue(res, i, i_atttypdefn);
+ attisdropped = (PQgetvalue(res, i, i_attisdropped)[0] == 't');
+ attlen = PQgetvalue(res, i, i_attlen);
+ attalign = PQgetvalue(res, i, i_attalign);
! if (attisdropped && !binary_upgrade)
! continue;
!
! /* Format properly if not first attr */
! if (actual_atts++ > 0)
appendPQExpBuffer(q, ",");
+ appendPQExpBuffer(q, "\n\t");
+
+ if (!attisdropped)
+ appendPQExpBuffer(q, "%s %s", fmtId(attname),
atttypdefn);
+ else /* binary_upgrade - see under dumpTableSchema() */
+ {
+ appendPQExpBuffer(q, "%s INTEGER /* dummy */",
fmtId(attname));
+
+ /* stash separately for insertion after the CREATE TYPE
*/
+ appendPQExpBuffer(dropped,
+ "\n-- For binary
upgrade, recreate dropped column.\n");
+ appendPQExpBuffer(dropped, "UPDATE
pg_catalog.pg_attribute\n"
+ "SET attlen = %s, "
+ "attalign = '%s',
attbyval = false\n"
+ "WHERE attname = ",
attlen, attalign);
+ appendStringLiteralAH(dropped, attname, fout);
+ appendPQExpBuffer(dropped, "\n AND attrelid = ");
+ appendStringLiteralAH(dropped,
fmtId(tyinfo->dobj.name), fout);
+ appendPQExpBuffer(dropped, "::pg_catalog.regclass;\n");
+
+ appendPQExpBuffer(dropped, "ALTER TYPE %s ",
+
fmtId(tyinfo->dobj.name));
+ appendPQExpBuffer(dropped, "DROP ATTRIBUTE %s;\n",
+ fmtId(attname));
+ }
}
appendPQExpBuffer(q, "\n);\n");
+ appendPQExpBufferStr(q, dropped->data);
/*
* DROP must be fully qualified in case same name appears in pg_catalog
***************
*** 8051,8056 **** dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
--- 8094,8100 ----
PQclear(res);
destroyPQExpBuffer(q);
+ destroyPQExpBuffer(dropped);
destroyPQExpBuffer(delq);
destroyPQExpBuffer(labelq);
destroyPQExpBuffer(query);
***************
*** 11987,11993 **** dumpTableSchema(Archive *fout, TableInfo *tbinfo)
"UNLOGGED " :
"",
reltypename,
fmtId(tbinfo->dobj.name));
! if (tbinfo->reloftype)
appendPQExpBuffer(q, " OF %s", tbinfo->reloftype);
actual_atts = 0;
for (j = 0; j < tbinfo->numatts; j++)
--- 12031,12037 ----
"UNLOGGED " :
"",
reltypename,
fmtId(tbinfo->dobj.name));
! if (tbinfo->reloftype && !binary_upgrade)
appendPQExpBuffer(q, " OF %s", tbinfo->reloftype);
actual_atts = 0;
for (j = 0; j < tbinfo->numatts; j++)
***************
*** 12015,12021 **** dumpTableSchema(Archive *fout, TableInfo *tbinfo)
bool has_notnull =
(tbinfo->notnull[j]
&&
(!tbinfo->inhNotNull[j] || binary_upgrade));
! if (tbinfo->reloftype && !has_default &&
!has_notnull)
continue;
/* Format properly if not first attr */
--- 12059,12066 ----
bool has_notnull =
(tbinfo->notnull[j]
&&
(!tbinfo->inhNotNull[j] || binary_upgrade));
! if (tbinfo->reloftype && !binary_upgrade &&
! !has_default && !has_notnull)
continue;
/* Format properly if not first attr */
***************
*** 12043,12049 **** dumpTableSchema(Archive *fout, TableInfo *tbinfo)
}
/* Attribute type */
! if (tbinfo->reloftype)
{
appendPQExpBuffer(q, "WITH OPTIONS");
}
--- 12088,12094 ----
}
/* Attribute type */
! if (tbinfo->reloftype && !binary_upgrade)
{
appendPQExpBuffer(q, "WITH OPTIONS");
}
***************
*** 12109,12115 **** dumpTableSchema(Archive *fout, TableInfo *tbinfo)
if (actual_atts)
appendPQExpBuffer(q, "\n)");
! else if (!tbinfo->reloftype)
{
/*
* We must have a parenthesized attribute list, even
though empty,
--- 12154,12160 ----
if (actual_atts)
appendPQExpBuffer(q, "\n)");
! else if (!(tbinfo->reloftype && !binary_upgrade))
{
/*
* We must have a parenthesized attribute list, even
though empty,
***************
*** 12251,12256 **** dumpTableSchema(Archive *fout, TableInfo *tbinfo)
--- 12296,12308 ----
}
}
+ if (tbinfo->reloftype)
+ {
+ appendPQExpBuffer(q, "\n-- For binary upgrade,
set up typed tables this way.\n");
+ appendPQExpBuffer(q, "ALTER TABLE ONLY %s OF
%s;\n",
+
fmtId(tbinfo->dobj.name), tbinfo->reloftype);
+ }
+
appendPQExpBuffer(q, "\n-- For binary upgrade, set
heap's relfrozenxid\n");
appendPQExpBuffer(q, "UPDATE pg_catalog.pg_class\n"
"SET relfrozenxid =
'%u'\n"
--
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