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-rw-r--r--sql/records.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/records.cc b/sql/records.cc
index e534c04935a..1b230c41156 100644
--- a/sql/records.cc
+++ b/sql/records.cc
@@ -189,7 +189,8 @@ bool init_read_record(READ_RECORD *info,THD *thd, TABLE *table,
info->table=table;
info->forms= &info->table; /* Only one table */
- if (table->s->tmp_table == NON_TRANSACTIONAL_TMP_TABLE &&
+ if ((table->s->tmp_table == INTERNAL_TMP_TABLE ||
+ table->s->tmp_table == NON_TRANSACTIONAL_TMP_TABLE) &&
!table->sort.addon_field)
(void) table->file->extra(HA_EXTRA_MMAP);