diff options
Diffstat (limited to 'src/backend/access/common/tupconvert.c')
| -rw-r--r-- | src/backend/access/common/tupconvert.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/backend/access/common/tupconvert.c b/src/backend/access/common/tupconvert.c index b17ceafa6ef..a4012525d80 100644 --- a/src/backend/access/common/tupconvert.c +++ b/src/backend/access/common/tupconvert.c @@ -138,12 +138,13 @@ convert_tuples_by_position(TupleDesc indesc, nincols, noutcols))); /* - * Check to see if the map is one-to-one and the tuple types are the same. - * (We check the latter because if they're not, we want to do conversion - * to inject the right OID into the tuple datum.) + * Check to see if the map is one-to-one, in which case we need not do + * the tuple conversion. That's not enough though if either source or + * destination (tuples) contains OIDs; we'd need conversion in that case + * to inject the right OID into the tuple datum. */ if (indesc->natts == outdesc->natts && - indesc->tdtypeid == outdesc->tdtypeid) + !indesc->tdhasoid && !outdesc->tdhasoid) { for (i = 0; i < n; i++) { @@ -214,12 +215,13 @@ convert_tuples_by_name(TupleDesc indesc, attrMap = convert_tuples_by_name_map(indesc, outdesc, msg); /* - * Check to see if the map is one-to-one and the tuple types are the same. - * (We check the latter because if they're not, we want to do conversion - * to inject the right OID into the tuple datum.) + * Check to see if the map is one-to-one, in which case we need not do + * the tuple conversion. That's not enough though if either source or + * destination (tuples) contains OIDs; we'd need conversion in that case + * to inject the right OID into the tuple datum. */ if (indesc->natts == outdesc->natts && - indesc->tdtypeid == outdesc->tdtypeid) + !indesc->tdhasoid && !outdesc->tdhasoid) { same = true; for (i = 0; i < n; i++) |