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DEFAULT is handled by analyze.c now.

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This commit is contained in:
Vadim B. Mikheev
1997-10-12 07:09:20 +00:00
parent c927f80fe4
commit defb10a450
2 changed files with 87 additions and 8 deletions
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6
src/backend/executor/execMain.c
View File

@@ -26,7 +26,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.26 1997/09/18 20:20:29 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.27 1997/10/12 07:09:02 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1245,6 +1245,7 @@ ExecReplace(TupleTableSlot *slot,
ExecARUpdateTriggers(resultRelationDesc, tupleid, tuple);
}
#if 0
static HeapTuple
ExecAttrDefault(Relation rel, HeapTuple tuple)
{
@@ -1309,6 +1310,7 @@ ExecAttrDefault(Relation rel, HeapTuple tuple)
return (newtuple);
}
#endif
static char *
ExecRelCheck(Relation rel, HeapTuple tuple)
@@ -1375,8 +1377,10 @@ ExecConstraints(char *caller, Relation rel, HeapTuple tuple)
Assert(rel->rd_att->constr);
#if 0
if (rel->rd_att->constr->num_defval > 0)
newtuple = tuple = ExecAttrDefault(rel, tuple);
#endif
if (rel->rd_att->constr->has_not_null)
{

89
src/backend/parser/analyze.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.44 1997/09/18 20:20:58 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.45 1997/10/12 07:09:20 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -303,6 +303,7 @@ static Query *
transformInsertStmt(ParseState *pstate, AppendStmt *stmt)
{
Query *qry = makeNode(Query); /* make a new query tree */
List *icolumns;
qry->commandType = CMD_INSERT;
pstate->p_is_insert = true;
@@ -313,10 +314,74 @@ transformInsertStmt(ParseState *pstate, AppendStmt *stmt)
qry->uniqueFlag = NULL;
/* fix the target list */
pstate->p_insert_columns = makeTargetNames(pstate, stmt->cols);
icolumns = pstate->p_insert_columns = makeTargetNames(pstate, stmt->cols);
qry->targetList = transformTargetList(pstate, stmt->targetList);
/* DEFAULT handling */
if (length(qry->targetList) < pstate->p_target_relation->rd_att->natts &&
pstate->p_target_relation->rd_att->constr &&
pstate->p_target_relation->rd_att->constr->num_defval > 0)
{
AttributeTupleForm *att = pstate->p_target_relation->rd_att->attrs;
AttrDefault *defval = pstate->p_target_relation->rd_att->constr->defval;
int ndef = pstate->p_target_relation->rd_att->constr->num_defval;
/*
* if stmt->cols == NIL then makeTargetNames returns list of all
* attrs: have to shorter icolumns list...
*/
if (stmt->cols == NIL)
{
List *extrl;
int i = length(qry->targetList);
foreach (extrl, icolumns)
{
if (--i <= 0)
break;
}
freeList (lnext(extrl));
lnext(extrl) = NIL;
}
while (ndef-- > 0)
{
List *tl;
Ident *id;
TargetEntry *te;
foreach (tl, icolumns)
{
id = (Ident *) lfirst(tl);
if (!namestrcmp(&(att[defval[ndef].adnum - 1]->attname), id->name))
break;
}
if (tl != NIL) /* something given for this attr */
continue;
/*
* Nothing given for this attr with DEFAULT expr, so
* add new TargetEntry to qry->targetList.
* Note, that we set resno to defval[ndef].adnum:
* it's what transformTargetList()->make_targetlist_expr()
* does for INSERT ... SELECT. But for INSERT ... VALUES
* pstate->p_last_resno is used. It doesn't matter for
* "normal" using (planner creates proper target list
* in preptlist.c), but may break RULEs in some way.
* It seems better to create proper target list here...
*/
te = makeNode(TargetEntry);
te->resdom = makeResdom(defval[ndef].adnum,
att[defval[ndef].adnum - 1]->atttypid,
att[defval[ndef].adnum - 1]->attlen,
pstrdup(nameout(&(att[defval[ndef].adnum - 1]->attname))),
0, 0, 0);
te->fjoin = NULL;
te->expr = (Node *) stringToNode(defval[ndef].adbin);
qry->targetList = lappend (qry->targetList, te);
}
}
/* fix where clause */
qry->qual = transformWhereClause(pstate, stmt->whereClause);
@@ -1098,10 +1163,20 @@ makeTargetNames(ParseState *pstate, List *cols)
}
}
else
{
foreach(tl, cols)
/* elog on failure */
varattno(pstate->p_target_relation, ((Ident *) lfirst(tl))->name);
{
List *nxt;
char *name = ((Ident *) lfirst(tl))->name;
/* elog on failure */
varattno(pstate->p_target_relation, name);
foreach(nxt, lnext(tl))
if (!strcmp(name, ((Ident *) lfirst(nxt))->name))
elog (WARN, "Attribute %s should be specified only once", name);
}
}
return cols;
}