WL #1034 update

- handle better non-latin1 identifiers


sql/event.cc:
  - introduce a wrapper to compare easily and correctly
  LEX_STRINGs
  - remove few unneeded variables
  - remove need_second_pass by restructuring the code. this brings
    performance boost because the code bails out from the loop once
    it hits what it looks for
  - handle ALTER EVENT name RENAME TO name  (throw an error message).
sql/event_executor.cc:
  - comment about DBUG_FAULTY_THR
  - indent fix
sql/event_timed.cc:
  - fix a problem when event name is not latin1. a cyrillic event name
    was crashing the parser so the I emulate SET NAMES utf8. The data is
    already in utf8, being loaded from the disk.
sql/share/errmsg.txt:
  add new error message

1 files changed, 10 insertions, 1 deletions

diff --git a/sql/event_executor.cc b/sql/event_executor.cc
index f3db374af54..1e45d984425 100644
--- a/sql/event_executor.cc
+++ b/sql/event_executor.cc
@@ -19,6 +19,15 @@
 #include "event_priv.h"
 #include "sp.h"
 
+
+/* 
+  Make this define DBUG_FAULTY_THR to be able to put breakpoints inside
+  code used by the scheduler's thread(s). In this case user connections
+  are not possible because the scheduler thread code is ran inside the
+  main thread (no spawning takes place. If you want to debug client 
+  connection then start with --one-thread and make the define
+  DBUG_FAULTY_THR2 !
+*/
 #define DBUG_FAULTY_THR2
 
 extern  ulong thread_created;
@@ -204,7 +213,7 @@ event_executor_main(void *arg)
   VOID(pthread_mutex_unlock(&LOCK_evex_running));
 
   if (evex_load_events_from_db(thd))
-   goto err;
+    goto err;
 
   THD_CHECK_SENTRY(thd);
   /* Read queries from the IO/THREAD until this thread is killed */