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-rw-r--r--src/backend/access/common/heaptuple.c35
-rw-r--r--src/backend/access/heap/tuptoaster.c133
-rw-r--r--src/backend/optimizer/path/allpaths.c14
-rw-r--r--src/backend/optimizer/path/costsize.c13
-rw-r--r--src/backend/optimizer/path/pathkeys.c5
-rw-r--r--src/backend/optimizer/prep/prepunion.c168
-rw-r--r--src/backend/optimizer/util/relnode.c5
-rw-r--r--src/backend/optimizer/util/tlist.c22
-rw-r--r--src/backend/utils/cache/typcache.c26
-rw-r--r--src/include/access/tuptoaster.h14
-rw-r--r--src/include/nodes/relation.h3
-rw-r--r--src/include/utils/typcache.h5
12 files changed, 376 insertions, 67 deletions
diff --git a/src/backend/access/common/heaptuple.c b/src/backend/access/common/heaptuple.c
index 266cf3bdcc2..88a9631e8cc 100644
--- a/src/backend/access/common/heaptuple.c
+++ b/src/backend/access/common/heaptuple.c
@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/common/heaptuple.c,v 1.91 2004/06/04 20:35:21 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/common/heaptuple.c,v 1.92 2004/06/05 01:55:04 tgl Exp $
*
* NOTES
* The old interface functions have been converted to macros
@@ -21,6 +21,7 @@
#include "postgres.h"
#include "access/heapam.h"
+#include "access/tuptoaster.h"
#include "catalog/pg_type.h"
@@ -567,8 +568,9 @@ heap_formtuple(TupleDesc tupleDescriptor,
unsigned long len;
int hoff;
bool hasnull = false;
- int i;
+ Form_pg_attribute *att = tupleDescriptor->attrs;
int numberOfAttributes = tupleDescriptor->natts;
+ int i;
if (numberOfAttributes > MaxTupleAttributeNumber)
ereport(ERROR,
@@ -577,17 +579,34 @@ heap_formtuple(TupleDesc tupleDescriptor,
numberOfAttributes, MaxTupleAttributeNumber)));
/*
- * Determine total space needed
+ * Check for nulls and embedded tuples; expand any toasted attributes
+ * in embedded tuples. This preserves the invariant that toasting can
+ * only go one level deep.
+ *
+ * We can skip calling toast_flatten_tuple_attribute() if the attribute
+ * couldn't possibly be of composite type. All composite datums are
+ * varlena and have alignment 'd'; furthermore they aren't arrays.
+ * Also, if an attribute is already toasted, it must have been sent to
+ * disk already and so cannot contain toasted attributes.
*/
for (i = 0; i < numberOfAttributes; i++)
{
if (nulls[i] != ' ')
- {
hasnull = true;
- break;
+ else if (att[i]->attlen == -1 &&
+ att[i]->attalign == 'd' &&
+ att[i]->attndims == 0 &&
+ !VARATT_IS_EXTENDED(values[i]))
+ {
+ values[i] = toast_flatten_tuple_attribute(values[i],
+ att[i]->atttypid,
+ att[i]->atttypmod);
}
}
+ /*
+ * Determine total space needed
+ */
len = offsetof(HeapTupleHeaderData, t_bits);
if (hasnull)
@@ -744,7 +763,11 @@ heap_deformtuple(HeapTuple tuple,
bool slow = false; /* can we use/set attcacheoff? */
natts = tup->t_natts;
- /* This min() operation is pure paranoia */
+ /*
+ * In inheritance situations, it is possible that the given tuple actually
+ * has more fields than the caller is expecting. Don't run off the end
+ * of the caller's arrays.
+ */
natts = Min(natts, tdesc_natts);
tp = (char *) tup + tup->t_hoff;
diff --git a/src/backend/access/heap/tuptoaster.c b/src/backend/access/heap/tuptoaster.c
index f206a3f28eb..c36cc42309e 100644
--- a/src/backend/access/heap/tuptoaster.c
+++ b/src/backend/access/heap/tuptoaster.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/heap/tuptoaster.c,v 1.42 2004/06/04 20:35:21 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/heap/tuptoaster.c,v 1.43 2004/06/05 01:55:04 tgl Exp $
*
*
* INTERFACE ROUTINES
@@ -35,6 +35,7 @@
#include "utils/builtins.h"
#include "utils/fmgroids.h"
#include "utils/pg_lzcompress.h"
+#include "utils/typcache.h"
#undef TOAST_DEBUG
@@ -458,10 +459,10 @@ toast_insert_or_update(Relation rel, HeapTuple newtup, HeapTuple oldtup)
* still in the tuple must be someone else's we cannot reuse.
* Expand it to plain (and, probably, toast it again below).
*/
- if (VARATT_IS_EXTERNAL(DatumGetPointer(toast_values[i])))
+ if (VARATT_IS_EXTERNAL(new_value))
{
- toast_values[i] = PointerGetDatum(heap_tuple_untoast_attr(
- (varattrib *) DatumGetPointer(toast_values[i])));
+ new_value = heap_tuple_untoast_attr(new_value);
+ toast_values[i] = PointerGetDatum(new_value);
toast_free[i] = true;
need_change = true;
need_free = true;
@@ -470,7 +471,7 @@ toast_insert_or_update(Relation rel, HeapTuple newtup, HeapTuple oldtup)
/*
* Remember the size of this attribute
*/
- toast_sizes[i] = VARATT_SIZE(DatumGetPointer(toast_values[i]));
+ toast_sizes[i] = VARATT_SIZE(new_value);
}
else
{
@@ -786,6 +787,128 @@ toast_insert_or_update(Relation rel, HeapTuple newtup, HeapTuple oldtup)
/* ----------
+ * toast_flatten_tuple_attribute -
+ *
+ * If a Datum is of composite type, "flatten" it to contain no toasted fields.
+ * This must be invoked on any potentially-composite field that is to be
+ * inserted into a tuple. Doing this preserves the invariant that toasting
+ * goes only one level deep in a tuple.
+ * ----------
+ */
+Datum
+toast_flatten_tuple_attribute(Datum value,
+ Oid typeId, int32 typeMod)
+{
+ TupleDesc tupleDesc;
+ HeapTupleHeader olddata;
+ HeapTupleHeader new_data;
+ int32 new_len;
+ HeapTupleData tmptup;
+ Form_pg_attribute *att;
+ int numAttrs;
+ int i;
+ bool need_change = false;
+ bool has_nulls = false;
+ Datum toast_values[MaxTupleAttributeNumber];
+ char toast_nulls[MaxTupleAttributeNumber];
+ bool toast_free[MaxTupleAttributeNumber];
+
+ /*
+ * See if it's a composite type, and get the tupdesc if so.
+ */
+ tupleDesc = lookup_rowtype_tupdesc_noerror(typeId, typeMod, true);
+ if (tupleDesc == NULL)
+ return value; /* not a composite type */
+
+ att = tupleDesc->attrs;
+ numAttrs = tupleDesc->natts;
+
+ /*
+ * Break down the tuple into fields.
+ */
+ olddata = DatumGetHeapTupleHeader(value);
+ Assert(typeId == HeapTupleHeaderGetTypeId(olddata));
+ Assert(typeMod == HeapTupleHeaderGetTypMod(olddata));
+ /* Build a temporary HeapTuple control structure */
+ tmptup.t_len = HeapTupleHeaderGetDatumLength(olddata);
+ ItemPointerSetInvalid(&(tmptup.t_self));
+ tmptup.t_tableOid = InvalidOid;
+ tmptup.t_data = olddata;
+
+ Assert(numAttrs <= MaxTupleAttributeNumber);
+ heap_deformtuple(&tmptup, tupleDesc, toast_values, toast_nulls);
+
+ memset(toast_free, 0, numAttrs * sizeof(bool));
+
+ for (i = 0; i < numAttrs; i++)
+ {
+ /*
+ * Look at non-null varlena attributes
+ */
+ if (toast_nulls[i] == 'n')
+ has_nulls = true;
+ else if (att[i]->attlen == -1)
+ {
+ varattrib *new_value;
+
+ new_value = (varattrib *) DatumGetPointer(toast_values[i]);
+ if (VARATT_IS_EXTENDED(new_value))
+ {
+ new_value = heap_tuple_untoast_attr(new_value);
+ toast_values[i] = PointerGetDatum(new_value);
+ toast_free[i] = true;
+ need_change = true;
+ }
+ }
+ }
+
+ /*
+ * If nothing to untoast, just return the original tuple.
+ */
+ if (!need_change)
+ return value;
+
+ /*
+ * Calculate the new size of the tuple. Header size should not
+ * change, but data size might.
+ */
+ new_len = offsetof(HeapTupleHeaderData, t_bits);
+ if (has_nulls)
+ new_len += BITMAPLEN(numAttrs);
+ if (olddata->t_infomask & HEAP_HASOID)
+ new_len += sizeof(Oid);
+ new_len = MAXALIGN(new_len);
+ Assert(new_len == olddata->t_hoff);
+ new_len += ComputeDataSize(tupleDesc, toast_values, toast_nulls);
+
+ new_data = (HeapTupleHeader) palloc0(new_len);
+
+ /*
+ * Put the tuple header and the changed values into place
+ */
+ memcpy(new_data, olddata, olddata->t_hoff);
+
+ HeapTupleHeaderSetDatumLength(new_data, new_len);
+
+ DataFill((char *) new_data + olddata->t_hoff,
+ tupleDesc,
+ toast_values,
+ toast_nulls,
+ &(new_data->t_infomask),
+ has_nulls ? new_data->t_bits : NULL);
+
+ /*
+ * Free allocated temp values
+ */
+ for (i = 0; i < numAttrs; i++)
+ if (toast_free[i])
+ pfree(DatumGetPointer(toast_values[i]));
+
+ return PointerGetDatum(new_data);
+}
+
+
+/* ----------
* toast_compress_datum -
*
* Create a compressed version of a varlena datum
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index dc428abdab9..24a51149e45 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.117 2004/06/01 03:02:51 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.118 2004/06/05 01:55:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -302,11 +302,15 @@ set_inherited_rel_pathlist(Query *root, RelOptInfo *rel,
{
Var *parentvar = (Var *) lfirst(parentvars);
Var *childvar = (Var *) lfirst(childvars);
- int parentndx = parentvar->varattno - rel->min_attr;
- int childndx = childvar->varattno - childrel->min_attr;
- if (childrel->attr_widths[childndx] > rel->attr_widths[parentndx])
- rel->attr_widths[parentndx] = childrel->attr_widths[childndx];
+ if (IsA(parentvar, Var) && IsA(childvar, Var))
+ {
+ int pndx = parentvar->varattno - rel->min_attr;
+ int cndx = childvar->varattno - childrel->min_attr;
+
+ if (childrel->attr_widths[cndx] > rel->attr_widths[pndx])
+ rel->attr_widths[pndx] = childrel->attr_widths[cndx];
+ }
}
}
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
index 46a323fade4..53bd8bdf5c5 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -49,7 +49,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.129 2004/06/01 03:02:52 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.130 2004/06/05 01:55:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1704,11 +1704,18 @@ set_rel_width(Query *root, RelOptInfo *rel)
foreach(tllist, rel->reltargetlist)
{
Var *var = (Var *) lfirst(tllist);
- int ndx = var->varattno - rel->min_attr;
+ int ndx;
Oid relid;
int32 item_width;
- Assert(IsA(var, Var));
+ /* For now, punt on whole-row child Vars */
+ if (!IsA(var, Var))
+ {
+ tuple_width += 32; /* arbitrary */
+ continue;
+ }
+
+ ndx = var->varattno - rel->min_attr;
/*
* The width probably hasn't been cached yet, but may as well
diff --git a/src/backend/optimizer/path/pathkeys.c b/src/backend/optimizer/path/pathkeys.c
index 363fe54450d..71f96c164e5 100644
--- a/src/backend/optimizer/path/pathkeys.c
+++ b/src/backend/optimizer/path/pathkeys.c
@@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.59 2004/06/01 03:02:52 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.60 2004/06/05 01:55:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -725,7 +725,8 @@ find_indexkey_var(Query *root, RelOptInfo *rel, AttrNumber varattno)
{
Var *var = (Var *) lfirst(temp);
- if (var->varattno == varattno)
+ if (IsA(var, Var) &&
+ var->varattno == varattno)
return var;
}
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index af2bb7e40e5..abc5af7784f 100644
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -14,13 +14,14 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.112 2004/05/30 23:40:29 neilc Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.113 2004/06/05 01:55:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
+#include "access/heapam.h"
#include "catalog/pg_type.h"
#include "nodes/makefuncs.h"
#include "optimizer/clauses.h"
@@ -39,8 +40,10 @@ typedef struct
{
Index old_rt_index;
Index new_rt_index;
- Oid old_relid;
- Oid new_relid;
+ TupleDesc old_tupdesc;
+ TupleDesc new_tupdesc;
+ char *old_rel_name;
+ char *new_rel_name;
} adjust_inherited_attrs_context;
static Plan *recurse_set_operations(Node *setOp, Query *parse,
@@ -65,7 +68,8 @@ static bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK);
static Node *adjust_inherited_attrs_mutator(Node *node,
adjust_inherited_attrs_context *context);
static Relids adjust_relid_set(Relids relids, Index oldrelid, Index newrelid);
-static List *adjust_inherited_tlist(List *tlist, Oid old_relid, Oid new_relid);
+static List *adjust_inherited_tlist(List *tlist,
+ adjust_inherited_attrs_context *context);
/*
@@ -787,17 +791,17 @@ expand_inherited_rtentry(Query *parse, Index rti, bool dup_parent)
* We also adjust varattno to match the new table by column name, rather
* than column number. This hack makes it possible for child tables to have
* different column positions for the "same" attribute as a parent, which
- * helps ALTER TABLE ADD COLUMN. Unfortunately this isn't nearly enough to
- * make it work transparently; there are other places where things fall down
- * if children and parents don't have the same column numbers for inherited
- * attributes. It'd be better to rip this code out and fix ALTER TABLE...
+ * is necessary for ALTER TABLE ADD COLUMN.
*/
Node *
adjust_inherited_attrs(Node *node,
Index old_rt_index, Oid old_relid,
Index new_rt_index, Oid new_relid)
{
+ Node *result;
adjust_inherited_attrs_context context;
+ Relation oldrelation;
+ Relation newrelation;
/* Handle simple case simply... */
if (old_rt_index == new_rt_index)
@@ -806,10 +810,19 @@ adjust_inherited_attrs(Node *node,
return copyObject(node);
}
+ /*
+ * We assume that by now the planner has acquired at least AccessShareLock
+ * on both rels, and so we need no additional lock now.
+ */
+ oldrelation = heap_open(old_relid, NoLock);
+ newrelation = heap_open(new_relid, NoLock);
+
context.old_rt_index = old_rt_index;
context.new_rt_index = new_rt_index;
- context.old_relid = old_relid;
- context.new_relid = new_relid;
+ context.old_tupdesc = RelationGetDescr(oldrelation);
+ context.new_tupdesc = RelationGetDescr(newrelation);
+ context.old_rel_name = RelationGetRelationName(oldrelation);
+ context.new_rel_name = RelationGetRelationName(newrelation);
/*
* Must be prepared to start with a Query or a bare expression tree.
@@ -829,13 +842,109 @@ adjust_inherited_attrs(Node *node,
if (newnode->commandType == CMD_UPDATE)
newnode->targetList =
adjust_inherited_tlist(newnode->targetList,
- old_relid,
- new_relid);
+ &context);
}
- return (Node *) newnode;
+ result = (Node *) newnode;
}
else
- return adjust_inherited_attrs_mutator(node, &context);
+ result = adjust_inherited_attrs_mutator(node, &context);
+
+ heap_close(oldrelation, NoLock);
+ heap_close(newrelation, NoLock);
+
+ return result;
+}
+
+/*
+ * Translate parent's attribute number into child's.
+ *
+ * For paranoia's sake, we match type as well as attribute name.
+ */
+static AttrNumber
+translate_inherited_attnum(AttrNumber old_attno,
+ adjust_inherited_attrs_context *context)
+{
+ Form_pg_attribute att;
+ char *attname;
+ Oid atttypid;
+ int32 atttypmod;
+ int newnatts;
+ int i;
+
+ if (old_attno <= 0 || old_attno > context->old_tupdesc->natts)
+ elog(ERROR, "attribute %d of relation \"%s\" does not exist",
+ (int) old_attno, context->old_rel_name);
+ att = context->old_tupdesc->attrs[old_attno - 1];
+ if (att->attisdropped)
+ elog(ERROR, "attribute %d of relation \"%s\" does not exist",
+ (int) old_attno, context->old_rel_name);
+ attname = NameStr(att->attname);
+ atttypid = att->atttypid;
+ atttypmod = att->atttypmod;
+
+ newnatts = context->new_tupdesc->natts;
+ for (i = 0; i < newnatts; i++)
+ {
+ att = context->new_tupdesc->attrs[i];
+ if (att->attisdropped)
+ continue;
+ if (strcmp(attname, NameStr(att->attname)) == 0)
+ {
+ /* Found it, check type */
+ if (atttypid != att->atttypid || atttypmod != att->atttypmod)
+ elog(ERROR, "attribute \"%s\" of relation \"%s\" does not match parent's type",
+ attname, context->new_rel_name);
+ return (AttrNumber) (i + 1);
+ }
+ }
+
+ elog(ERROR, "attribute \"%s\" of relation \"%s\" does not exist",
+ attname, context->new_rel_name);
+ return 0; /* keep compiler quiet */
+}
+
+/*
+ * Translate a whole-row Var to be correct for a child table.
+ *
+ * In general the child will not have a suitable field layout to be used
+ * directly, so we translate the simple whole-row Var into a ROW() construct.
+ */
+static Node *
+generate_whole_row(Var *var,
+ adjust_inherited_attrs_context *context)
+{
+ RowExpr *rowexpr;
+ List *fields = NIL;
+ int oldnatts = context->old_tupdesc->natts;
+ int i;
+
+ for (i = 0; i < oldnatts; i++)
+ {
+ Form_pg_attribute att = context->old_tupdesc->attrs[i];
+ Var *newvar;
+
+ if (att->attisdropped)
+ {
+ /*
+ * can't use atttypid here, but it doesn't really matter
+ * what type the Const claims to be.
+ */
+ newvar = (Var *) makeNullConst(INT4OID);
+ }
+ else
+ newvar = makeVar(context->new_rt_index,
+ translate_inherited_attnum(i + 1, context),
+ att->atttypid,
+ att->atttypmod,
+ 0);
+ fields = lappend(fields, newvar);
+ }
+ rowexpr = makeNode(RowExpr);
+ rowexpr->args = fields;
+ rowexpr->row_typeid = var->vartype; /* report parent's rowtype */
+ rowexpr->row_format = COERCE_IMPLICIT_CAST;
+
+ return (Node *) rowexpr;
}
static Node *
@@ -855,17 +964,16 @@ adjust_inherited_attrs_mutator(Node *node,
var->varnoold = context->new_rt_index;
if (var->varattno > 0)
{
- char *attname;
-
- attname = get_relid_attribute_name(context->old_relid,
- var->varattno);
- var->varattno = get_attnum(context->new_relid, attname);
- if (var->varattno == InvalidAttrNumber)
- elog(ERROR, "attribute \"%s\" of relation \"%s\" does not exist",
- attname, get_rel_name(context->new_relid));
+ var->varattno = translate_inherited_attnum(var->varattno,
+ context);
var->varoattno = var->varattno;
- pfree(attname);
}
+ else if (var->varattno == 0)
+ {
+ /* expand whole-row reference into a ROW() construct */
+ return generate_whole_row(var, context);
+ }
+ /* system attributes don't need any translation */
}
return (Node *) var;
}
@@ -1022,7 +1130,8 @@ adjust_relid_set(Relids relids, Index oldrelid, Index newrelid)
* Note that this is not needed for INSERT because INSERT isn't inheritable.
*/
static List *
-adjust_inherited_tlist(List *tlist, Oid old_relid, Oid new_relid)
+adjust_inherited_tlist(List *tlist,
+ adjust_inherited_attrs_context *context)
{
bool changed_it = false;
ListCell *tl;
@@ -1035,26 +1144,19 @@ adjust_inherited_tlist(List *tlist, Oid old_relid, Oid new_relid)
{
TargetEntry *tle = (TargetEntry *) lfirst(tl);
Resdom *resdom = tle->resdom;
- char *attname;
if (resdom->resjunk)
continue; /* ignore junk items */
- attname = get_relid_attribute_name(old_relid, resdom->resno);
- attrno = get_attnum(new_relid, attname);
- if (attrno == InvalidAttrNumber)
- elog(ERROR, "attribute \"%s\" of relation \"%s\" does not exist",
- attname, get_rel_name(new_relid));
+ attrno = translate_inherited_attnum(resdom->resno, context);
+
if (resdom->resno != attrno)
{
resdom = (Resdom *) copyObject((Node *) resdom);
resdom->resno = attrno;
- resdom->resname = attname;
tle->resdom = resdom;
changed_it = true;
}
- else
- pfree(attname);
}
/*
diff --git a/src/backend/optimizer/util/relnode.c b/src/backend/optimizer/util/relnode.c
index 36e688135a8..58d4f588809 100644
--- a/src/backend/optimizer/util/relnode.c
+++ b/src/backend/optimizer/util/relnode.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.59 2004/06/01 03:03:02 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.60 2004/06/05 01:55:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -381,6 +381,9 @@ build_joinrel_tlist(Query *root, RelOptInfo *joinrel)
Var *var = (Var *) lfirst(vars);
int ndx = var->varattno - baserel->min_attr;
+ /* We can't run into any child RowExprs here */
+ Assert(IsA(var, Var));
+
if (bms_nonempty_difference(baserel->attr_needed[ndx], relids))
{
joinrel->reltargetlist = lappend(joinrel->reltargetlist, var);
diff --git a/src/backend/optimizer/util/tlist.c b/src/backend/optimizer/util/tlist.c
index dcee4f8c31a..4878ebb0275 100644
--- a/src/backend/optimizer/util/tlist.c
+++ b/src/backend/optimizer/util/tlist.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/util/tlist.c,v 1.64 2004/05/30 23:40:31 neilc Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/util/tlist.c,v 1.65 2004/06/05 01:55:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -17,6 +17,7 @@
#include "nodes/makefuncs.h"
#include "optimizer/tlist.h"
#include "optimizer/var.h"
+#include "parser/parse_expr.h"
/*****************************************************************************
@@ -83,13 +84,28 @@ tlist_member(Node *node, List *targetlist)
* create_tl_element
* Creates a target list entry node and its associated (resdom var) pair
* with its resdom number equal to 'resdomno'.
+ *
+ * Note: the argument is almost always a Var, but occasionally not.
*/
TargetEntry *
create_tl_element(Var *var, int resdomno)
{
+ Oid vartype;
+ int32 vartypmod;
+
+ if (IsA(var, Var))
+ {
+ vartype = var->vartype;
+ vartypmod = var->vartypmod;
+ }
+ else
+ {
+ vartype = exprType((Node *) var);
+ vartypmod = exprTypmod((Node *) var);
+ }
return makeTargetEntry(makeResdom(resdomno,
- var->vartype,
- var->vartypmod,
+ vartype,
+ vartypmod,
NULL,
false),
(Expr *) var);
diff --git a/src/backend/utils/cache/typcache.c b/src/backend/utils/cache/typcache.c
index b3ef61c2d72..8ad60423c78 100644
--- a/src/backend/utils/cache/typcache.c
+++ b/src/backend/utils/cache/typcache.c
@@ -36,7 +36,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/cache/typcache.c,v 1.6 2004/05/26 04:41:40 neilc Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/cache/typcache.c,v 1.7 2004/06/05 01:55:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -385,6 +385,19 @@ lookup_default_opclass(Oid type_id, Oid am_id)
TupleDesc
lookup_rowtype_tupdesc(Oid type_id, int32 typmod)
{
+ return lookup_rowtype_tupdesc_noerror(type_id, typmod, false);
+}
+
+/*
+ * lookup_rowtype_tupdesc_noerror
+ *
+ * As above, but if the type is not a known composite type and noError
+ * is true, returns NULL instead of ereport'ing. (Note that if a bogus
+ * type_id is passed, you'll get an ereport anyway.)
+ */
+TupleDesc
+lookup_rowtype_tupdesc_noerror(Oid type_id, int32 typmod, bool noError)
+{
if (type_id != RECORDOID)
{
/*
@@ -393,8 +406,7 @@ lookup_rowtype_tupdesc(Oid type_id, int32 typmod)
TypeCacheEntry *typentry;
typentry = lookup_type_cache(type_id, TYPECACHE_TUPDESC);
- /* this should not happen unless caller messed up: */
- if (typentry->tupDesc == NULL)
+ if (typentry->tupDesc == NULL && !noError)
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("type %u is not composite",
@@ -408,9 +420,11 @@ lookup_rowtype_tupdesc(Oid type_id, int32 typmod)
*/
if (typmod < 0 || typmod >= NextRecordTypmod)
{
- ereport(ERROR,
- (errcode(ERRCODE_WRONG_OBJECT_TYPE),
- errmsg("record type has not been registered")));
+ if (!noError)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("record type has not been registered")));
+ return NULL;
}
return RecordCacheArray[typmod];
}
diff --git a/src/include/access/tuptoaster.h b/src/include/access/tuptoaster.h
index 2e2fcc91543..3332e9ab62b 100644
--- a/src/include/access/tuptoaster.h
+++ b/src/include/access/tuptoaster.h
@@ -6,7 +6,7 @@
*
* Copyright (c) 2000-2003, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/include/access/tuptoaster.h,v 1.17 2003/11/29 22:40:55 pgsql Exp $
+ * $PostgreSQL: pgsql/src/include/access/tuptoaster.h,v 1.18 2004/06/05 01:55:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -111,6 +111,18 @@ extern varattrib *heap_tuple_untoast_attr_slice(varattrib *attr,
int32 slicelength);
/* ----------
+ * toast_flatten_tuple_attribute -
+ *
+ * If a Datum is of composite type, "flatten" it to contain no toasted fields.
+ * This must be invoked on any potentially-composite field that is to be
+ * inserted into a tuple. Doing this preserves the invariant that toasting
+ * goes only one level deep in a tuple.
+ * ----------
+ */
+extern Datum toast_flatten_tuple_attribute(Datum value,
+ Oid typeId, int32 typeMod);
+
+/* ----------
* toast_compress_datum -
*
* Create a compressed version of a varlena datum, if possible
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h
index 91114fb03b7..a75ddb8262d 100644
--- a/src/include/nodes/relation.h
+++ b/src/include/nodes/relation.h
@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.95 2004/06/01 03:03:05 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.96 2004/06/05 01:55:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -91,6 +91,7 @@ typedef struct QualCost
* appropriate projections have been done (ie, output width)
* reltargetlist - List of Var nodes for the attributes we need to
* output from this relation (in no particular order)
+ * NOTE: in a child relation, may contain RowExprs
* pathlist - List of Path nodes, one for each potentially useful
* method of generating the relation
* cheapest_startup_path - the pathlist member with lowest startup cost
diff --git a/src/include/utils/typcache.h b/src/include/utils/typcache.h
index 8b85f517000..0856fddea14 100644
--- a/src/include/utils/typcache.h
+++ b/src/include/utils/typcache.h
@@ -9,7 +9,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/utils/typcache.h,v 1.3 2004/04/01 21:28:46 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/utils/typcache.h,v 1.4 2004/06/05 01:55:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -76,6 +76,9 @@ extern TypeCacheEntry *lookup_type_cache(Oid type_id, int flags);
extern TupleDesc lookup_rowtype_tupdesc(Oid type_id, int32 typmod);
+extern TupleDesc lookup_rowtype_tupdesc_noerror(Oid type_id, int32 typmod,
+ bool noError);
+
extern void assign_record_type_typmod(TupleDesc tupDesc);
extern void flush_rowtype_cache(Oid type_id);
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-24 19:19:38 +0000