Merge 10.2 into 10.3

mysql-test/main/cte_recursive.test

@@ -2441,6 +2441,61 @@ SELECT  * FROM expired_map;
 
 DROP TABLE purchases, expired;
 
+--echo #
+--echo # MDEV-17635: Two recursive CTEs, the second using the first
+--echo #
+
+WITH RECURSIVE
+x AS (SELECT 0 as k UNION ALL SELECT k + 1 FROM x WHERE k < 1),
+z AS
+  ( SELECT  k1 AS cx, k2 AS cy, k1, k2
+      FROM (SELECT k  AS k1 FROM x) x1 JOIN (SELECT k  AS k2 FROM x) y1
+    UNION
+    SELECT 1,1,1,1 FROM z)
+SELECT * FROM z;
+
+--echo # https://wiki.postgresql.org/wiki/Mandelbrot_set:
+
+WITH RECURSIVE x(i) AS (
+    SELECT CAST(0 AS DECIMAL(13, 10))
+     UNION ALL
+    SELECT i + 1
+      FROM x
+     WHERE i < 101
+),
+Z(Ix, Iy, Cx, Cy, X, Y, I) AS (
+    SELECT Ix, Iy, X, Y, X, Y, 0
+      FROM (SELECT CAST(-2.2 + 0.031 * i AS DECIMAL(13, 10)) AS X,
+                  i AS Ix FROM x) AS xgen
+           CROSS JOIN (
+               SELECT CAST(-1.5 + 0.031 * i AS DECIMAL(13, 10)) AS Y,
+                      i AS iY FROM x
+           ) AS ygen
+    UNION ALL
+    SELECT Ix, Iy, Cx, Cy,
+           CAST(X * X - Y * Y + Cx AS DECIMAL(13, 10)) AS X,
+           CAST(Y * X * 2 + Cy AS DECIMAL(13, 10)), I + 1
+      FROM Z
+     WHERE X * X + Y * Y < 16.0
+           AND I < 27
+),
+Zt (Ix, Iy, I) AS (
+    SELECT Ix, Iy, MAX(I) AS I
+      FROM Z
+     GROUP BY Iy, Ix
+     ORDER BY Iy, Ix
+)
+SELECT GROUP_CONCAT(
+           SUBSTRING(
+               ' .,,,-----++++%%%%@@@@#### ',
+               GREATEST(I, 1),
+               1
+           ) ORDER BY Ix SEPARATOR ''
+       ) AS 'Mandelbrot Set'
+  FROM Zt
+GROUP BY Iy
+ORDER BY Iy;
+
 --echo # End of 10.2 tests
 
 --echo #

mysql-test/suite/rpl/disabled.def

@@ -17,6 +17,5 @@ rpl_row_binlog_max_cache_size : MDEV-11092
 rpl_blackhole             : MDEV-11094
 rpl_row_mysqlbinlog       : MDEV-11095
 rpl_row_index_choice      : MDEV-11666
-rpl_delayed_slave         : MDEV-14528
 rpl_parallel2             : fails after MDEV-16172
 rpl_semi_sync_after_sync  : fails after MDEV-16172

sql/slave.cc

@@ -4306,7 +4306,15 @@ static int exec_relay_log_event(THD* thd, Relay_log_info* rli,
       */
       if (!(ev->is_artificial_event() || ev->is_relay_log_event() || (ev->when == 0)))
       {
+        /*
+          Ignore FD's timestamp as it does not reflect the slave execution
+          state but likely to reflect a deep past. Consequently when the first
+          data modification event execution last long all this time
+          Seconds_Behind_Master is zero.
+        */
+        if (ev->get_type_code() != FORMAT_DESCRIPTION_EVENT)
           rli->last_master_timestamp= ev->when + (time_t) ev->exec_time;
+
         DBUG_ASSERT(rli->last_master_timestamp >= 0);
       }
     }

sql/sql_cte.cc

@@ -1278,7 +1278,7 @@ bool With_element::check_unrestricted_recursive(st_select_lex *sel,
       With_element *with_elem= unit->with_element;
       if (encountered & with_elem->get_elem_map())
         unrestricted|= with_elem->mutually_recursive;
-      else
+      else if (with_elem ==this)
         encountered|= with_elem->get_elem_map();
     }
   }