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New pg_attribute.atttypmod for type-specific information like

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varchar length.

Cleans up code so attlen is always length.

Removed varchar() hack added earlier.

Will fix bug in selecting varchar() fields, and varchar() can be
variable length.
This commit is contained in:
Bruce Momjian
1998-01-16 23:21:07 +00:00
parent d7427e4802
commit c65ea0e040
27 changed files with 335 additions and 463 deletions
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75
src/backend/executor/execUtils.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execUtils.c,v 1.23 1998/01/07 21:02:50 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execUtils.c,v 1.24 1998/01/16 23:19:52 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -1177,76 +1177,3 @@ ExecInsertIndexTuples(TupleTableSlot *slot,
if (econtext != NULL)
pfree(econtext);
}
/* ----------------------------------------------------------------
* setVarAttrLenForCreateTable -
* called when we do a SELECT * INTO TABLE tab
* needed for attributes that have a defined length, like bpchar and
* varchar
* ----------------------------------------------------------------
*/
void
setVarAttrLenForCreateTable(TupleDesc tupType, List *targetList,
List *rangeTable)
{
List *tl;
TargetEntry *tle;
Node *expr;
int varno;
tl = targetList;
for (varno = 0; varno < tupType->natts; varno++)
{
tle = lfirst(tl);
if (tupType->attrs[varno]->atttypid == BPCHAROID ||
tupType->attrs[varno]->atttypid == VARCHAROID)
{
expr = tle->expr;
if (expr && IsA(expr, Var))
{
Var *var;
RangeTblEntry *rtentry;
Relation rd;
var = (Var *) expr;
rtentry = rt_fetch(var->varnoold, rangeTable);
rd = heap_open(rtentry->relid);
/* set length to that defined in relation */
tupType->attrs[varno]->attlen =
(*rd->rd_att->attrs[var->varoattno - 1]).attlen;
heap_close(rd);
}
else
elog(ERROR, "setVarAttrLenForCreateTable: can't get length for variable-length field");
}
tl = lnext(tl);
}
}
#ifdef NOT_USED /* look at execMain.c */
/* ----------------------------------------------------------------
* resetVarAttrLenForCreateTable -
* called when we do a SELECT * INTO TABLE tab
* needed for attributes that have a defined length, like bpchar and
* varchar
* resets length to -1 for those types
* ----------------------------------------------------------------
*/
void
resetVarAttrLenForCreateTable(TupleDesc tupType)
{
int varno;
for (varno = 0; varno < tupType->natts; varno++)
{
if (tupType->attrs[varno]->atttypid == BPCHAROID ||
tupType->attrs[varno]->atttypid == VARCHAROID)
/* set length to original -1 */
tupType->attrs[varno]->attlen = -1;
}
}
#endif