Merge commit '10.4' into 10.5

1 files changed, 11 insertions, 4 deletions

diff --git a/sql/sql_class.h b/sql/sql_class.h
index 1da82edc061..3c28d089e20 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -641,7 +641,6 @@ typedef struct system_variables
   ulonglong bulk_insert_buff_size;
   ulonglong join_buff_size;
   ulonglong sortbuff_size;
-  ulonglong group_concat_max_len;
   ulonglong default_regex_flags;
   ulonglong max_mem_used;
 
@@ -734,6 +733,8 @@ typedef struct system_variables
   uint32     gtid_domain_id;
   uint64     gtid_seq_no;
 
+  uint group_concat_max_len;
+
   /**
     Default transaction access mode. READ ONLY (true) or READ WRITE (false).
   */
@@ -6140,10 +6141,15 @@ class select_union_recursive :public select_unit
  public:
   /* The temporary table with the new records generated by one iterative step */
   TABLE *incr_table;
+  /* The TMP_TABLE_PARAM structure used to create incr_table */
+  TMP_TABLE_PARAM incr_table_param;
   /* One of tables from the list rec_tables (determined dynamically) */
   TABLE *first_rec_table_to_update;
-  /* The temporary tables used for recursive table references */
-  List<TABLE> rec_tables;
+  /*
+    The list of all recursive table references to the CTE for whose
+    specification this select_union_recursive was created
+ */
+  List<TABLE_LIST> rec_table_refs;
   /*
     The count of how many times cleanup() was called with cleaned==false
     for the unit specifying the recursive CTE for which this object was created
@@ -6153,7 +6159,8 @@ class select_union_recursive :public select_unit
 
   select_union_recursive(THD *thd_arg):
     select_unit(thd_arg),
-    incr_table(0), first_rec_table_to_update(0), cleanup_count(0) {};
+    incr_table(0), first_rec_table_to_update(0), cleanup_count(0)
+  { incr_table_param.init(); };
 
   int send_data(List<Item> &items);
   bool create_result_table(THD *thd, List<Item> *column_types,