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-rw-r--r--sql/sql_select.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/sql_select.h b/sql/sql_select.h
index 644828fa08c..46e7b7fe95f 100644
--- a/sql/sql_select.h
+++ b/sql/sql_select.h
@@ -1688,7 +1688,7 @@ void optimize_wo_join_buffering(JOIN *join, uint first_tab, uint last_tab,
double *outer_rec_count, double *reopt_cost);
Item_equal *find_item_equal(COND_EQUAL *cond_equal, Field *field,
bool *inherited_fl);
-bool test_if_ref(COND *root_cond,
+extern bool test_if_ref(Item *,
Item_field *left_item,Item *right_item);
inline bool optimizer_flag(THD *thd, uint flag)