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-rw-r--r--sql/item.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/item.cc b/sql/item.cc
index e34905a2e7f..d253e19e068 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -7159,7 +7159,7 @@ double Item_cache_decimal::val_real()
DBUG_ASSERT(fixed);
double res;
if (!value_cached && !cache_value())
- return NULL;
+ return 0.0;
my_decimal2double(E_DEC_FATAL_ERROR, &decimal_value, &res);
return res;
}