diff options
Diffstat (limited to 'src/backend/commands/tablecmds.c')
| -rw-r--r-- | src/backend/commands/tablecmds.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index 60b66ec5c5f..6279f2bf9a5 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -70,6 +70,7 @@ #include "storage/bufmgr.h" #include "storage/lmgr.h" #include "storage/lock.h" +#include "storage/predicate.h" #include "storage/smgr.h" #include "utils/acl.h" #include "utils/builtins.h" @@ -1040,6 +1041,14 @@ ExecuteTruncate(TruncateStmt *stmt) Oid toast_relid; /* + * This effectively deletes all rows in the table, and may be done + * in a serializable transaction. In that case we must record a + * rw-conflict in to this transaction from each transaction + * holding a predicate lock on the table. + */ + CheckTableForSerializableConflictIn(rel); + + /* * Need the full transaction-safe pushups. * * Create a new empty storage file for the relation, and assign it @@ -3529,6 +3538,16 @@ ATRewriteTable(AlteredTableInfo *tab, Oid OIDNewHeap, LOCKMODE lockmode) (errmsg("verifying table \"%s\"", RelationGetRelationName(oldrel)))); + if (newrel) + { + /* + * All predicate locks on the tuples or pages are about to be made + * invalid, because we move tuples around. Promote them to + * relation locks. + */ + TransferPredicateLocksToHeapRelation(oldrel); + } + econtext = GetPerTupleExprContext(estate); /* |