Bug #26261:

 INSERT uses query_id to verify what fields are
 mentioned in the fields list of the INSERT command.
 However the check for that is made after the 
 ON DUPLICATE KEY is processed. This causes all
 the fields mentioned in ON DUPLICATE KEY to be 
 considered as mentioned in the fields list of 
 INSERT.
 Moved the check up, right after processing the
 fields list.


mysql-test/r/insert_update.result:
  Bug #26261: test case
mysql-test/t/insert_update.test:
  Bug #26261: test case
sql/mysql_priv.h:
  Bug #26261: moved the check inside mysql_prepare_insert
sql/sql_insert.cc:
  Bug #26261: move the check inside mysql_prepare_insert
  before setting up the ON DUPLICATE KEY part
sql/sql_prepare.cc:
  Bug #26261: moved the check inside mysql_prepare_insert

mysql-test/r/insert_update.result

@@ -236,3 +236,14 @@ INSERT INTO t2 VALUES (1), (3);
 INSERT INTO t1 SELECT 1, COUNT(*) FROM t2 ON DUPLICATE KEY UPDATE j= a;
 ERROR 42S22: Unknown column 'a' in 'field list'
 DROP TABLE t1,t2;
+SET SQL_MODE = 'TRADITIONAL';
+CREATE TABLE t1 (a INT PRIMARY KEY, b INT NOT NULL);
+INSERT INTO t1 (a) VALUES (1);
+ERROR HY000: Field 'b' doesn't have a default value
+INSERT INTO t1 (a) VALUES (1) ON DUPLICATE KEY UPDATE a = b;
+ERROR HY000: Field 'b' doesn't have a default value
+INSERT INTO t1 (a) VALUES (1) ON DUPLICATE KEY UPDATE b = b;
+ERROR HY000: Field 'b' doesn't have a default value
+SELECT * FROM t1;
+a	b
+DROP TABLE t1;

mysql-test/t/insert_update.test

@@ -162,3 +162,24 @@ INSERT INTO t2 VALUES (1), (3);
 --error ER_BAD_FIELD_ERROR
 INSERT INTO t1 SELECT 1, COUNT(*) FROM t2 ON DUPLICATE KEY UPDATE j= a;
 DROP TABLE t1,t2;
+
+#
+# Bug #26261: Missing default value isn't noticed in 
+#   insert ... on duplicate key update
+#
+SET SQL_MODE = 'TRADITIONAL';
+
+CREATE TABLE t1 (a INT PRIMARY KEY, b INT NOT NULL);
+
+--error 1364
+INSERT INTO t1 (a) VALUES (1);
+
+--error 1364
+INSERT INTO t1 (a) VALUES (1) ON DUPLICATE KEY UPDATE a = b;
+
+--error 1364
+INSERT INTO t1 (a) VALUES (1) ON DUPLICATE KEY UPDATE b = b;
+
+SELECT * FROM t1;
+
+DROP TABLE t1;

sql/mysql_priv.h

@@ -823,7 +823,8 @@ bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list, TABLE *table,
                           List<Item> &fields, List_item *values,
                           List<Item> &update_fields,
                           List<Item> &update_values, enum_duplicates duplic,
-                          COND **where, bool select_insert);
+                          COND **where, bool select_insert,
+                          bool check_fields, bool abort_on_warning);
 bool mysql_insert(THD *thd,TABLE_LIST *table,List<Item> &fields,
                   List<List_item> &values, List<Item> &update_fields,
                   List<Item> &update_values, enum_duplicates flag,

sql/sql_insert.cc

@@ -451,10 +451,15 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
   thd->proc_info="init";
   thd->used_tables=0;
   values= its++;
+  value_count= values->elements;
 
   if (mysql_prepare_insert(thd, table_list, table, fields, values,
 			   update_fields, update_values, duplic, &unused_conds,
-                           FALSE))
+                           FALSE,
+                           (fields.elements || !value_count),
+                           !ignore && (thd->variables.sql_mode &
+                                       (MODE_STRICT_TRANS_TABLES |
+                                        MODE_STRICT_ALL_TABLES))))
     goto abort;
 
   /* mysql_prepare_insert set table_list->table if it was not set */
@@ -480,7 +485,6 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
   table_list->next_local= 0;
   context->resolve_in_table_list_only(table_list);
 
-  value_count= values->elements;
   while ((values= its++))
   {
     counter++;
@@ -551,17 +555,9 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
     table->file->start_bulk_insert(values_list.elements);
 
   thd->no_trans_update= 0;
-  thd->abort_on_warning= (!ignore &&
-                          (thd->variables.sql_mode &
-                           (MODE_STRICT_TRANS_TABLES |
-                            MODE_STRICT_ALL_TABLES)));
-
-  if ((fields.elements || !value_count) &&
-      check_that_all_fields_are_given_values(thd, table, table_list))
-  {
-    /* thd->net.report_error is now set, which will abort the next loop */
-    error= 1;
-  }
+  thd->abort_on_warning= (!ignore && (thd->variables.sql_mode &
+                                       (MODE_STRICT_TRANS_TABLES |
+                                        MODE_STRICT_ALL_TABLES)));
 
   mark_fields_used_by_triggers_for_insert_stmt(thd, table, duplic);
 
@@ -934,6 +930,10 @@ static bool mysql_prepare_insert_check_table(THD *thd, TABLE_LIST *table_list,
 			be taken from table_list->table)    
     where		Where clause (for insert ... select)
     select_insert	TRUE if INSERT ... SELECT statement
+    check_fields        TRUE if need to check that all INSERT fields are 
+                        given values.
+    abort_on_warning    whether to report if some INSERT field is not 
+                        assigned as an error (TRUE) or as a warning (FALSE).
 
   TODO (in far future)
     In cases of:
@@ -954,7 +954,8 @@ bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
                           TABLE *table, List<Item> &fields, List_item *values,
                           List<Item> &update_fields, List<Item> &update_values,
                           enum_duplicates duplic,
-                          COND **where, bool select_insert)
+                          COND **where, bool select_insert,
+                          bool check_fields, bool abort_on_warning)
 {
   SELECT_LEX *select_lex= &thd->lex->select_lex;
   Name_resolution_context *context= &select_lex->context;
@@ -1017,10 +1018,22 @@ bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list,
     table_list->next_local= 0;
     context->resolve_in_table_list_only(table_list);
 
-    if (!(res= check_insert_fields(thd, context->table_list, fields, *values,
-                                 !insert_into_view, &map) ||
-          setup_fields(thd, 0, *values, 0, 0, 0)) 
-        && duplic == DUP_UPDATE)
+    res= check_insert_fields(thd, context->table_list, fields, *values,
+                             !insert_into_view, &map) ||
+      setup_fields(thd, 0, *values, 0, 0, 0);
+
+    if (!res && check_fields)
+    {
+      bool saved_abort_on_warning= thd->abort_on_warning;
+      thd->abort_on_warning= abort_on_warning;
+      res= check_that_all_fields_are_given_values(thd, 
+                                                  table ? table : 
+                                                  context->table_list->table,
+                                                  context->table_list);
+      thd->abort_on_warning= saved_abort_on_warning;
+    }
+
+    if (!res && duplic == DUP_UPDATE)
     {
       select_lex->no_wrap_view_item= TRUE;
       res= check_update_fields(thd, context->table_list, update_fields, &map);
@@ -2295,7 +2308,7 @@ bool mysql_insert_select_prepare(THD *thd)
                            lex->query_tables->table, lex->field_list, 0,
                            lex->update_list, lex->value_list,
                            lex->duplicates,
-                           &select_lex->where, TRUE))
+                           &select_lex->where, TRUE, FALSE, FALSE))
     DBUG_RETURN(TRUE);
 
   /*
@@ -2357,7 +2370,18 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
                            !insert_into_view, &map) ||
        setup_fields(thd, 0, values, 0, 0, 0);
 
-  if (info.handle_duplicates == DUP_UPDATE)
+  if (!res && fields->elements)
+  {
+    bool saved_abort_on_warning= thd->abort_on_warning;
+    thd->abort_on_warning= !info.ignore && (thd->variables.sql_mode &
+                                            (MODE_STRICT_TRANS_TABLES |
+                                             MODE_STRICT_ALL_TABLES));
+    res= check_that_all_fields_are_given_values(thd, table_list->table, 
+                                                table_list);
+    thd->abort_on_warning= saved_abort_on_warning;
+  }
+
+  if (info.handle_duplicates == DUP_UPDATE && !res)
   {
     Name_resolution_context *context= &lex->select_lex.context;
     Name_resolution_context_state ctx_state;
@@ -2459,9 +2483,7 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
                           (thd->variables.sql_mode &
                            (MODE_STRICT_TRANS_TABLES |
                             MODE_STRICT_ALL_TABLES)));
-  res= ((fields->elements &&
-         check_that_all_fields_are_given_values(thd, table, table_list)) ||
-        table_list->prepare_where(thd, 0, TRUE) ||
+  res= (table_list->prepare_where(thd, 0, TRUE) ||
         table_list->prepare_check_option(thd));
 
   if (!res)

sql/sql_prepare.cc

@@ -1058,7 +1058,7 @@ static bool mysql_test_insert(Prepared_statement *stmt,
 
     if (mysql_prepare_insert(thd, table_list, table_list->table,
                              fields, values, update_fields, update_values,
-                             duplic, &unused_conds, FALSE))
+                             duplic, &unused_conds, FALSE, FALSE, FALSE))
       goto error;
 
     value_count= values->elements;