diff options
Diffstat (limited to 'src/backend/executor/nodeRecursiveunion.c')
| -rw-r--r-- | src/backend/executor/nodeRecursiveunion.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/src/backend/executor/nodeRecursiveunion.c b/src/backend/executor/nodeRecursiveunion.c index 39be191c45b..acded079e24 100644 --- a/src/backend/executor/nodeRecursiveunion.c +++ b/src/backend/executor/nodeRecursiveunion.c @@ -3,6 +3,10 @@ * nodeRecursiveunion.c * routines to handle RecursiveUnion nodes. * + * To implement UNION (without ALL), we need a hashtable that stores tuples + * already seen. The hash key is computed from the grouping columns. + * + * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * @@ -20,17 +24,6 @@ #include "utils/memutils.h" -/* - * To implement UNION (without ALL), we need a hashtable that stores tuples - * already seen. The hash key is computed from the grouping columns. - */ -typedef struct RUHashEntryData *RUHashEntry; - -typedef struct RUHashEntryData -{ - TupleHashEntryData shared; /* common header for hash table entries */ -} RUHashEntryData; - /* * Initialize the hash table to empty. @@ -48,7 +41,7 @@ build_hash_table(RecursiveUnionState *rustate) rustate->eqfunctions, rustate->hashfunctions, node->numGroups, - sizeof(RUHashEntryData), + 0, rustate->tableContext, rustate->tempContext); } |