diff --git a/mysql-test/main/cte_recursive.result b/mysql-test/main/cte_recursive.result
index 0c98530c9bf..7bf85016f11 100644
--- a/mysql-test/main/cte_recursive.result
+++ b/mysql-test/main/cte_recursive.result
@@ -4873,4 +4873,149 @@ a
 0
 NULL
 DROP TABLE t1;
+#
+# MDEV-12325 Unexpected data type and truncation when using CTE
+#
+CREATE TABLE t1
+(
+id INT, mid INT, name TEXT
+);
+INSERT INTO t1 VALUES (0,NULL,'Name'),(1,0,'Name1'),(2,0,'Name2'),(11,1,'Name11'),(12,1,'Name12');
+WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;
+ERROR 22003: Out of range value for column 'mid' at row 2
+create table t2 as WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;;
+ERROR 22003: Out of range value for column 'mid' at row 2
+create table t2 ignore as WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;;
+Warnings:
+Warning	1264	Out of range value for column 'mid' at row 2
+Warning	1264	Out of range value for column 'mid' at row 3
+Warning	1264	Out of range value for column 'mid' at row 4
+Warning	1264	Out of range value for column 'mid' at row 5
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `level` int(1) DEFAULT NULL,
+  `id` int(11) DEFAULT NULL,
+  `mid` int(11) DEFAULT NULL,
+  `name` text DEFAULT NULL,
+  `mname` text DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+insert into t2 WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;;
+ERROR 22003: Out of range value for column 'mid' at row 2
+insert ignore into t2 WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;;
+Warnings:
+Warning	1264	Out of range value for column 'mid' at row 2
+Warning	1264	Out of range value for column 'mid' at row 3
+Warning	1264	Out of range value for column 'mid' at row 4
+Warning	1264	Out of range value for column 'mid' at row 5
+drop table t2;
+set @@sql_mode="";
+WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;
+level	id	mid	name	mname
+1	0	NULL	Name	NULL
+2	1	2147483647	Name1	NULL
+2	2	2147483647	Name2	NULL
+3	11	2147483647	Name11	NULL
+3	12	2147483647	Name12	NULL
+Warnings:
+Warning	1264	Out of range value for column 'mid' at row 2
+Warning	1264	Out of range value for column 'mid' at row 3
+Warning	1264	Out of range value for column 'mid' at row 4
+Warning	1264	Out of range value for column 'mid' at row 5
+create table t2 as WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+UNION ALL
+SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+level, id, mid, name,
+(SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;;
+Warnings:
+Warning	1264	Out of range value for column 'mid' at row 2
+Warning	1264	Out of range value for column 'mid' at row 3
+Warning	1264	Out of range value for column 'mid' at row 4
+Warning	1264	Out of range value for column 'mid' at row 5
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `level` int(1) DEFAULT NULL,
+  `id` int(11) DEFAULT NULL,
+  `mid` int(11) DEFAULT NULL,
+  `name` text DEFAULT NULL,
+  `mname` text DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+set @@sql_mode=default;
+drop table t1,t2;
+#
 # End of 10.3 tests
+#
diff --git a/mysql-test/main/cte_recursive.test b/mysql-test/main/cte_recursive.test
index 4c4bd99c24c..ca97c2d2900 100644
--- a/mysql-test/main/cte_recursive.test
+++ b/mysql-test/main/cte_recursive.test
@@ -3165,4 +3165,47 @@ SELECT * FROM cte;
 
 DROP TABLE t1;
 
+--echo #
+--echo # MDEV-12325 Unexpected data type and truncation when using CTE
+--echo #
+
+CREATE TABLE t1
+(
+  id INT, mid INT, name TEXT
+);
+INSERT INTO t1 VALUES (0,NULL,'Name'),(1,0,'Name1'),(2,0,'Name2'),(11,1,'Name11'),(12,1,'Name12');
+
+let $query=
+WITH RECURSIVE
+cteReports (level, id, mid, name) AS
+(
+  SELECT 1, id, mid, name FROM t1 WHERE mid IS NULL
+  UNION ALL
+  SELECT r.level + 1, e.id, e.mid + 1000000000000, e.name FROM t1 e
+  INNER JOIN cteReports r ON e.mid = r.id
+)
+SELECT
+  level, id, mid, name,
+  (SELECT name FROM t1 WHERE id= cteReports.mid) AS mname
+FROM cteReports ORDER BY level, mid;
+
+--error ER_WARN_DATA_OUT_OF_RANGE
+--eval $query
+--error ER_WARN_DATA_OUT_OF_RANGE
+--eval create table t2 as $query;
+--eval create table t2 ignore as $query;
+show create table t2;
+--error ER_WARN_DATA_OUT_OF_RANGE
+--eval insert into t2 $query;
+--eval insert ignore into t2 $query;
+drop table t2;
+set @@sql_mode="";
+--eval $query
+--eval create table t2 as $query;
+show create table t2;
+set @@sql_mode=default;
+drop table t1,t2;
+
+--echo #
 --echo # End of 10.3 tests
+--echo #
diff --git a/sql/sql_class.h b/sql/sql_class.h
index 850a8364adc..05b8f7eb443 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -5691,10 +5691,12 @@ class select_union_recursive :public select_unit
     or for the unit specifying a CTE that mutually recursive with this CTE.
   */
   uint cleanup_count;
+  long row_counter;
 
   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),
+      row_counter(0)
   { incr_table_param.init(); };
 
   int send_data(List<Item> &items);
diff --git a/sql/sql_error.h b/sql/sql_error.h
index 3b29f7aba06..ec52724b6da 100644
--- a/sql/sql_error.h
+++ b/sql/sql_error.h
@@ -722,6 +722,13 @@ private:
   /** Reset the current row counter. Start counting from the first row. */
   void reset_current_row_for_warning() { m_current_row_for_warning= 1; }
 
+  ulong set_current_row_for_warning(ulong row)
+  {
+    ulong old_row= m_current_row_for_warning;
+    m_current_row_for_warning= row;
+    return old_row;
+  }
+
   /** Return the current counter value. */
   ulong current_row_for_warning() const { return m_current_row_for_warning; }
 
@@ -1099,6 +1106,9 @@ public:
   void opt_clear_warning_info(ulonglong query_id)
   { get_warning_info()->opt_clear(query_id); }
 
+  long set_current_row_for_warning(long row)
+  { return get_warning_info()->set_current_row_for_warning(row); }
+
   ulong current_row_for_warning() const
   { return get_warning_info()->current_row_for_warning(); }
 
diff --git a/sql/sql_union.cc b/sql/sql_union.cc
index 48d8c16db68..32d307de5e8 100644
--- a/sql/sql_union.cc
+++ b/sql/sql_union.cc
@@ -297,7 +297,27 @@ bool select_unit::send_eof()
 
 int select_union_recursive::send_data(List<Item> &values)
 {
-  int rc= select_unit::send_data(values);
+
+  int rc;
+  bool save_abort_on_warning= thd->abort_on_warning;
+  enum_check_fields save_count_cuted_fields= thd->count_cuted_fields;
+  long save_counter;
+
+  /*
+    For recursive CTE's give warnings for wrong field info
+    However, we don't do that for CREATE TABLE ... SELECT or INSERT ... SELECT
+    as the upper level code for these handles setting of abort_on_warning
+    depending on if 'IGNORE' is used.
+  */
+  if (thd->lex->sql_command != SQLCOM_CREATE_TABLE &&
+      thd->lex->sql_command != SQLCOM_INSERT_SELECT)
+    thd->abort_on_warning= thd->is_strict_mode();
+  thd->count_cuted_fields= CHECK_FIELD_WARN;
+  save_counter= thd->get_stmt_da()->set_current_row_for_warning(++row_counter);
+  rc= select_unit::send_data(values);
+  thd->get_stmt_da()->set_current_row_for_warning(save_counter);
+  thd->count_cuted_fields= save_count_cuted_fields;
+  thd->abort_on_warning= save_abort_on_warning;
 
   if (rc == 0 &&
       write_err != HA_ERR_FOUND_DUPP_KEY &&
@@ -476,6 +496,7 @@ void select_union_recursive::cleanup()
     thd->rec_tables= tab;
     tbl->derived_result= 0;
   }
+  row_counter= 0;
 }
 
 
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 770e5e1c3e7..577405725ca 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -15373,7 +15373,6 @@ with_clause:
                MYSQL_YYABORT;
              Lex->derived_tables|= DERIVED_WITH;
              Lex->with_cte_resolution= true;
-             Lex->with_cte_resolution= true;
              Lex->curr_with_clause= with_clause;
              with_clause->add_to_list(Lex->with_clauses_list_last_next);
           }