Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1

into  moonbone.local:/work/mysql-4.1-bug-10886


sql/sql_insert.cc:
  Auto merged

mysql-test/r/insert_select.result

@@ -625,3 +625,12 @@ select SQL_BUFFER_RESULT * from t1 WHERE (SEQ = 1);
 ID	NO	SEQ
 1	1	1
 drop table t1;
+create table t1 (f1 int);
+create table t2 (ff1 int unique, ff2 int default 1);
+insert into t1 values (1),(1),(2);
+insert into t2(ff1) select f1 from t1 on duplicate key update ff2=ff2+1;
+select * from t2;
+ff1	ff2
+1	2
+2	1
+drop table t1, t2;

mysql-test/t/insert_select.test

@@ -166,3 +166,12 @@ INSERT INTO t1 (SEQ, NO) SELECT "1" AS SEQ, IF(MAX(NO) IS NULL, 0, MAX(NO)) + 1
 select SQL_BUFFER_RESULT * from t1 WHERE (SEQ = 1);
 drop table t1;
 
+#
+# Bug#10886 - Have to restore default values after update ON DUPLICATE KEY
+#
+create table t1 (f1 int);
+create table t2 (ff1 int unique, ff2 int default 1);
+insert into t1 values (1),(1),(2);
+insert into t2(ff1) select f1 from t1 on duplicate key update ff2=ff2+1;
+select * from t2;
+drop table t1, t2;

sql/sql_insert.cc

@@ -1636,12 +1636,23 @@ bool select_insert::send_data(List<Item> &values)
   store_values(values);
   error=thd->net.report_error || write_record(table,&info);
   thd->count_cuted_fields= CHECK_FIELD_IGNORE;
-  if (!error && table->next_number_field)       // Clear for next record
+
+  if (!error)
+  {
+    /*
+    Restore fields of the record since it is possible that they were
+    changed by ON DUPLICATE KEY UPDATE clause.
+    */
+    if (info.handle_duplicates == DUP_UPDATE)
+      restore_record(table, default_values);
+
+    if (table->next_number_field)       // Clear for next record
     {
       table->next_number_field->reset();
       if (! last_insert_id && thd->insert_id_used)
         last_insert_id=thd->insert_id();
     }
+  }
   DBUG_RETURN(error);
 }