- last bits of unneeded error checking in sql_parse.cc thrown away

- fix a bug introduced with last commit ALTER EVENT a RENAME TO b; failed
- misc


sql/event.cc:
  - rename evex_db_find_routine_aux() to evex_db_find_event_aux() (better name)
  - change parameter order of db_update_event()
  - last bits to handle errors as close as possible to the place they occur
  - fix a bug introduced with last commit: first check for overwriting and event and then
    check whether the original one exists
sql/event.h:
  add a new error code returned by event_timed::compile() in case of 
  error
sql/event_priv.h:
  rename
sql/event_timed.cc:
  - function rename
  - add a bit of doc
sql/share/errmsg.txt:
  - extend an error message so it's more informative
  - add a new error message
sql/sql_parse.cc:
  refactor the cases for CREATE/ALTER/DROP event so use as much common
  code as possible. last bits of error checking unneeded in sql_parse.cc
  thrwon out.

1 files changed, 10 insertions, 2 deletions

diff --git a/sql/event_timed.cc b/sql/event_timed.cc
index 8d494a921f0..ff52c99cb50 100644
--- a/sql/event_timed.cc
+++ b/sql/event_timed.cc
@@ -740,7 +740,7 @@ event_timed::update_fields(THD *thd)
   if (!(table= evex_open_event_table(thd, TL_WRITE)))
     DBUG_RETURN(SP_OPEN_TABLE_FAILED);
 
-  if ((ret= evex_db_find_routine_aux(thd, dbname, name, table)))
+  if ((ret= evex_db_find_event_aux(thd, dbname, name, table)))
     goto done;
 
   store_record(table,record[1]);
@@ -893,6 +893,14 @@ done:
 }
 
 
+/*
+  Returns
+                     0 - Success
+    EVEX_COMPILE_ERROR - Error during compilation
+
+*/
+
+
 int
 event_timed::compile(THD *thd, MEM_ROOT *mem_root)
 {
@@ -936,7 +944,7 @@ event_timed::compile(THD *thd, MEM_ROOT *mem_root)
     // QQ: anything else ?
     lex_end(&lex);
     thd->lex= old_lex;
-    DBUG_RETURN(-1);
+    DBUG_RETURN(EVEX_COMPILE_ERROR);
   }
   
   sphead= lex.sphead;