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-rw-r--r--heap/hp_open.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/heap/hp_open.c b/heap/hp_open.c
index 69e02945253..938ab8c4f78 100644
--- a/heap/hp_open.c
+++ b/heap/hp_open.c
@@ -46,7 +46,8 @@ HP_INFO *heap_open(const char *name, int mode, uint keys, HP_KEYDEF *keydef,
for (j=length=0 ; j < keydef[i].keysegs; j++)
{
length+=keydef[i].seg[j].length;
- if (keydef[i].seg[j].null_bit)
+ if (keydef[i].seg[j].null_bit &&
+ !(keydef[i].flag & HA_NULL_ARE_EQUAL))
keydef[i].flag |= HA_NULL_PART_KEY;
}
keydef[i].length=length;