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Code review for HeapTupleHeader changes. Add version number to page headers

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(overlaying low byte of page size) and add HEAP_HASOID bit to t_infomask,
per earlier discussion.  Simplify scheme for overlaying fields in tuple
header (no need for cmax to live in more than one place).  Don't try to
clear infomask status bits in tqual.c --- not safe to do it there.  Don't
try to force output table of a SELECT INTO to have OIDs, either.  Get rid
of unnecessarily complex three-state scheme for TupleDesc.tdhasoids, which
has already caused one recent failure.  Improve documentation.
This commit is contained in:
Tom Lane
2002-09-02 01:05:06 +00:00
parent fcd34f9f7f
commit c7a165adc6
49 changed files with 513 additions and 561 deletions
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12
src/backend/commands/tablecmds.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.37 2002/08/30 19:23:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.38 2002/09/02 01:05:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -150,7 +150,8 @@ DefineRelation(CreateStmt *stmt, char relkind)
* have to copy inherited constraints here.)
*/
descriptor = BuildDescForRelation(schema);
descriptor->tdhasoid = BoolToHasOid(stmt->hasoids || parentHasOids);
descriptor->tdhasoid = (stmt->hasoids || parentHasOids);
if (old_constraints != NIL)
{
@ -212,7 +213,6 @@ DefineRelation(CreateStmt *stmt, char relkind)
descriptor,
relkind,
false,
stmt->hasoids || parentHasOids,
allowSystemTableMods);
StoreCatalogInheritance(relationId, inheritOids);
@ -1733,7 +1733,6 @@ AlterTableAddColumn(Oid myrelid,
ReleaseSysCache(typeTuple);
AssertTupleDescHasNoOid(attrdesc->rd_att);
simple_heap_insert(attrdesc, attributeTuple);
/* Update indexes on pg_attribute */
@ -1747,7 +1746,7 @@ AlterTableAddColumn(Oid myrelid,
newreltup = heap_copytuple(reltup);
((Form_pg_class) GETSTRUCT(newreltup))->relnatts = maxatts;
AssertTupleDescHasOid(pgclass->rd_att);
simple_heap_update(pgclass, &newreltup->t_self, newreltup);
/* keep catalog indexes current */
@ -3430,7 +3429,7 @@ AlterTableCreateToastTable(Oid relOid, bool silent)
snprintf(toast_idxname, NAMEDATALEN, "pg_toast_%u_index", relOid);
/* this is pretty painful... need a tuple descriptor */
tupdesc = CreateTemplateTupleDesc(3, WITHOUTOID);
tupdesc = CreateTemplateTupleDesc(3, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1,
"chunk_id",
OIDOID,
@ -3464,7 +3463,6 @@ AlterTableCreateToastTable(Oid relOid, bool silent)
tupdesc,
RELKIND_TOASTVALUE,
shared_relation,
false,
true);
/* make the toast relation visible, else index creation will fail */