Merge remote-tracking branch 'shagalla/10.3-mdev12172' into 10.3

As a result of this merge the code for the following tasks appears in 10.3:
- MDEV-12172 Implement tables specified by table value constructors
- MDEV-12176 Transform [NOT] IN predicate with long list of values INTO
             [NOT] IN subquery.

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/item_subselect.h b/sql/item_subselect.h
index 6112c1c22f4..14394bf6342 100644
--- a/sql/item_subselect.h
+++ b/sql/item_subselect.h
@@ -266,6 +266,7 @@ public:
   Item* build_clone(THD *thd, MEM_ROOT *mem_root) { return 0; }
   Item* get_copy(THD *thd, MEM_ROOT *mem_root) { return 0; }
 
+  bool wrap_tvc_in_derived_table(THD *thd, st_select_lex *tvc_sl);
 
   friend class select_result_interceptor;
   friend class Item_in_optimizer;
@@ -878,6 +879,7 @@ public:
   virtual enum_engine_type engine_type() { return SINGLE_SELECT_ENGINE; }
   int get_identifier();
   void force_reexecution();
+  void change_select(st_select_lex *new_select) { select_lex= new_select; }
 
   friend class subselect_hash_sj_engine;
   friend class Item_in_subselect;