diff options
| -rw-r--r-- | src/backend/commands/tablecmds.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index e7017e90d10..d2781cbf194 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -9648,6 +9648,7 @@ ATExecAlterColumnType(AlteredTableInfo *tab, Relation rel, Datum valuesAtt[Natts_pg_attribute]; bool nullsAtt[Natts_pg_attribute]; bool replacesAtt[Natts_pg_attribute]; + HeapTuple newTup; MemSet(valuesAtt, 0, sizeof(valuesAtt)); MemSet(nullsAtt, false, sizeof(nullsAtt)); @@ -9673,8 +9674,10 @@ ATExecAlterColumnType(AlteredTableInfo *tab, Relation rel, replacesAtt[Anum_pg_attribute_attmissingval - 1] = true; nullsAtt[Anum_pg_attribute_attmissingval - 1] = false; - heapTup = heap_modify_tuple(heapTup, RelationGetDescr(attrelation), - valuesAtt, nullsAtt, replacesAtt); + newTup = heap_modify_tuple(heapTup, RelationGetDescr(attrelation), + valuesAtt, nullsAtt, replacesAtt); + heap_freetuple(heapTup); + heapTup = newTup; attTup = (Form_pg_attribute) GETSTRUCT(heapTup); } } |