EV-16992 Assertion `table_ref->table || table_ref->view' failed in

Field_iterator_table_ref::set_field_iterator

Several functions that processed different prepare statements missed
the DT_INIT flag in last parameter of the open_normal_and_derived_tables()
calls. It made context analysis of derived tables dependent on the order in
which the derived tables were processed by mysql_handle_derived(). This
order was induced by the order of SELECTs in all_select_list.
In 10.4 the order of SELECTs in all_select_list became different and lack
of the DT_INIT flags in some open_normal_and_derived_tables() call became
critical as some derived tables were not identified as such.

mysql-test/main/ps.result

@@ -5321,5 +5321,48 @@ DROP PROCEDURE p2;
 DROP PROCEDURE p1;
 DROP ROLE testrole;
 #
+# MDEV-16992: prepare of CREATE TABLE, CREATE VIEW, DO, SET, CALL
+#             statements with CTE containing materialized derived
+# (the bug is reproducible on 10.4)        
+#
+prepare stmt from 
+"CREATE TABLE  t1  AS 
+ WITH cte(a) AS (SELECT * FROM (SELECT 1) AS t) SELECT * FROM cte;";
+execute stmt;
+select * from t1;
+a
+1
+prepare stmt from
+"CREATE VIEW  v1  AS 
+ WITH cte(a) AS (SELECT * FROM (SELECT 1) AS t) SELECT * FROM cte;";
+execute stmt;
+select * from v1;
+a
+1
+prepare stmt from 
+"DO (SELECT 1 
+     FROM (WITH cte AS (SELECT * FROM (SELECT 1) AS t)
+           SELECT * FROM cte) AS tt);";
+execute stmt;
+prepare stmt from 
+"SET @a = (SELECT 1
+           FROM (WITH cte AS (SELECT * FROM (SELECT 1) AS t)
+           SELECT * FROM cte) AS t);";
+execute stmt;
+create procedure p (i int) insert into t1 values(i);
+prepare stmt from 
+"CALL p       
+ ((SELECT 1
+   FROM (WITH cte AS (SELECT * FROM (SELECT 1) AS t)
+         SELECT * FROM cte) AS tt));";
+execute stmt;
+select * from t1;
+a
+1
+1
+drop procedure p;
+drop view v1;
+drop table t1;
+#
 # End of 10.2 tests
 #

mysql-test/main/ps.test

@@ -4784,6 +4784,52 @@ DROP PROCEDURE p2;
 DROP PROCEDURE p1;
 DROP ROLE testrole;
 
+--echo #
+--echo # MDEV-16992: prepare of CREATE TABLE, CREATE VIEW, DO, SET, CALL
+--echo #             statements with CTE containing materialized derived
+--echo # (the bug is reproducible on 10.4)        
+--echo #
+
+--enable_result_log
+
+prepare stmt from 
+"CREATE TABLE  t1  AS 
+ WITH cte(a) AS (SELECT * FROM (SELECT 1) AS t) SELECT * FROM cte;";
+execute stmt;
+select * from t1;
+
+prepare stmt from
+"CREATE VIEW  v1  AS 
+ WITH cte(a) AS (SELECT * FROM (SELECT 1) AS t) SELECT * FROM cte;";
+execute stmt;
+select * from v1;
+
+prepare stmt from 
+"DO (SELECT 1 
+     FROM (WITH cte AS (SELECT * FROM (SELECT 1) AS t)
+           SELECT * FROM cte) AS tt);";
+execute stmt;
+
+prepare stmt from 
+"SET @a = (SELECT 1
+           FROM (WITH cte AS (SELECT * FROM (SELECT 1) AS t)
+           SELECT * FROM cte) AS t);";
+execute stmt;
+
+create procedure p (i int) insert into t1 values(i);
+
+prepare stmt from 
+"CALL p       
+ ((SELECT 1
+   FROM (WITH cte AS (SELECT * FROM (SELECT 1) AS t)
+         SELECT * FROM cte) AS tt));";
+execute stmt;
+select * from t1;
+
+drop procedure p;
+drop view v1;
+drop table t1;
+
 --echo #
 --echo # End of 10.2 tests
 --echo #

sql/sql_prepare.cc

@@ -1582,7 +1582,7 @@ static bool mysql_test_do_fields(Prepared_statement *stmt,
     DBUG_RETURN(TRUE);
 
   if (open_normal_and_derived_tables(thd, tables, MYSQL_OPEN_FORCE_SHARED_MDL,
-                                     DT_PREPARE | DT_CREATE))
+                                     DT_INIT | DT_PREPARE | DT_CREATE))
     DBUG_RETURN(TRUE);
   DBUG_RETURN(setup_fields(thd, Ref_ptr_array(),
                            *values, COLUMNS_READ, 0, NULL, 0));
@@ -1614,7 +1614,7 @@ static bool mysql_test_set_fields(Prepared_statement *stmt,
   if ((tables &&
        check_table_access(thd, SELECT_ACL, tables, FALSE, UINT_MAX, FALSE)) ||
       open_normal_and_derived_tables(thd, tables, MYSQL_OPEN_FORCE_SHARED_MDL,
-                                     DT_PREPARE | DT_CREATE))
+                                     DT_INIT | DT_PREPARE | DT_CREATE))
     goto error;
 
   while ((var= it++))
@@ -1651,7 +1651,8 @@ static bool mysql_test_call_fields(Prepared_statement *stmt,
 
   if ((tables &&
        check_table_access(thd, SELECT_ACL, tables, FALSE, UINT_MAX, FALSE)) ||
-      open_normal_and_derived_tables(thd, tables, MYSQL_OPEN_FORCE_SHARED_MDL, DT_PREPARE))
+      open_normal_and_derived_tables(thd, tables, MYSQL_OPEN_FORCE_SHARED_MDL,
+                                     DT_INIT | DT_PREPARE))
     goto err;
 
   while ((item= it++))
@@ -1777,7 +1778,7 @@ static bool mysql_test_create_table(Prepared_statement *stmt)
 
     if (open_normal_and_derived_tables(stmt->thd, lex->query_tables,
                                        MYSQL_OPEN_FORCE_SHARED_MDL,
-                                       DT_PREPARE | DT_CREATE))
+                                       DT_INIT | DT_PREPARE | DT_CREATE))
       DBUG_RETURN(TRUE);
 
     select_lex->context.resolve_in_select_list= TRUE;
@@ -1798,7 +1799,7 @@ static bool mysql_test_create_table(Prepared_statement *stmt)
     */
     if (open_normal_and_derived_tables(stmt->thd, lex->query_tables,
                                        MYSQL_OPEN_FORCE_SHARED_MDL,
-                                       DT_PREPARE))
+                                       DT_INIT | DT_PREPARE))
       DBUG_RETURN(TRUE);
   }
 
@@ -2025,7 +2026,7 @@ static bool mysql_test_create_view(Prepared_statement *stmt)
 
   lex->context_analysis_only|= CONTEXT_ANALYSIS_ONLY_VIEW;
   if (open_normal_and_derived_tables(thd, tables, MYSQL_OPEN_FORCE_SHARED_MDL,
-                                     DT_PREPARE))
+                                     DT_INIT | DT_PREPARE))
     goto err;
 
   res= select_like_stmt_test(stmt, 0, 0);