sql_insert.cc:

  Removed wrong fix for the bug#27006.
  The bug was added by the fix for the bug#19978 and fixed by Monty on 2007/02/21.
trigger.test, trigger.result:
  Corrected test case for the bug#27006.

mysql-test/r/trigger.result

@@ -1398,18 +1398,19 @@ id	val
 1	test1
 2	test2
 INSERT INTO t1 VALUES (2,'test2') ON DUPLICATE KEY UPDATE val=VALUES(val);
-INSERT INTO t1 VALUES (3,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
+INSERT INTO t1 VALUES (2,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
+INSERT INTO t1 VALUES (3,'test4') ON DUPLICATE KEY UPDATE val=VALUES(val);
 SELECT * FROM t1;
 id	val
 1	test1
-2	test2
-3	test3
+2	test3
+3	test4
 SELECT * FROM t2;
 id	val
 1	test1
 2	test2
-3	test2
-4	test3
+3	test3
+4	test4
 DROP TRIGGER trg27006_a_insert;
 DROP TRIGGER trg27006_a_update;
 drop table t1,t2;

mysql-test/t/trigger.test

@@ -1700,8 +1700,7 @@ DROP PROCEDURE bug22580_proc_1;
 DROP PROCEDURE bug22580_proc_2;
 
 #
-# Bug#27006: AFTER UPDATE triggers not fired with INSERT ... ON DUPLICATE KEY
-#            UPDATE if the row wasn't actually changed.
+# Bug#27006: AFTER UPDATE triggers not fired with INSERT ... ON DUPLICATE
 #
 --disable_warnings
 DROP TRIGGER IF EXISTS trg27006_a_update;
@@ -1730,7 +1729,8 @@ INSERT INTO t1(val) VALUES ('test1'),('test2');
 SELECT * FROM t1;
 SELECT * FROM t2;
 INSERT INTO t1 VALUES (2,'test2') ON DUPLICATE KEY UPDATE val=VALUES(val);
-INSERT INTO t1 VALUES (3,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
+INSERT INTO t1 VALUES (2,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
+INSERT INTO t1 VALUES (3,'test4') ON DUPLICATE KEY UPDATE val=VALUES(val);
 SELECT * FROM t1;
 SELECT * FROM t2;
 DROP TRIGGER trg27006_a_insert;

sql/sql_insert.cc

@@ -1238,19 +1238,19 @@ int write_record(THD *thd, TABLE *table,COPY_INFO *info)
         if (table->next_number_field)
           table->file->adjust_next_insert_id_after_explicit_value(
             table->next_number_field->val_int());
-
         info->touched++;
+
         if ((table->file->table_flags() & HA_PARTIAL_COLUMN_READ) ||
             compare_record(table, thd->query_id))
         {
           info->updated++;
-          info->copied++;
-        }
-
           trg_error= (table->triggers &&
                       table->triggers->process_triggers(thd, TRG_EVENT_UPDATE,
                                                         TRG_ACTION_AFTER,
                                                         TRUE));
+          info->copied++;
+        }
+
         goto ok_or_after_trg_err;
       }
       else /* DUP_REPLACE */