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-rw-r--r--sql/sql_base.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sql/sql_base.h b/sql/sql_base.h
index 5bbccc87cdc..78ab8c7df24 100644
--- a/sql/sql_base.h
+++ b/sql/sql_base.h
@@ -272,6 +272,7 @@ bool rename_temporary_table(THD* thd, TABLE *table, const char *new_db,
const char *table_name);
bool is_equal(const LEX_STRING *a, const LEX_STRING *b);
+class Open_tables_backup;
/* Functions to work with system tables. */
bool open_system_tables_for_read(THD *thd, TABLE_LIST *table_list,
Open_tables_backup *backup);