diff options
Diffstat (limited to 'src/backend/commands/portalcmds.c')
| -rw-r--r-- | src/backend/commands/portalcmds.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/commands/portalcmds.c b/src/backend/commands/portalcmds.c index 50a54e74633..e52830f7ec2 100644 --- a/src/backend/commands/portalcmds.c +++ b/src/backend/commands/portalcmds.c @@ -317,10 +317,11 @@ PersistHoldablePortal(Portal portal) Assert(queryDesc != NULL); /* - * Caller must have created the tuplestore already. + * Caller must have created the tuplestore already ... but not a snapshot. */ Assert(portal->holdContext != NULL); Assert(portal->holdStore != NULL); + Assert(portal->holdSnapshot == NULL); /* * Before closing down the executor, we must copy the tupdesc into @@ -362,7 +363,8 @@ PersistHoldablePortal(Portal portal) /* * Change the destination to output to the tuplestore. Note we tell - * the tuplestore receiver to detoast all data passed through it. + * the tuplestore receiver to detoast all data passed through it; this + * makes it safe to not keep a snapshot associated with the data. */ queryDesc->dest = CreateDestReceiver(DestTuplestore); SetTuplestoreDestReceiverParams(queryDesc->dest, |