Extended WEEK() to be able to handle ISO weeks.

unlink socket file if mysqld dies on startup
Some optimization of AND expressions


mysql-test/r/func_time.result:
  Update for new week() handling
mysql-test/t/func_time.test:
  Update for new week() handling
sql/item_cmpfunc.cc:
  Optimization of IF( and-expression,,)
sql/item_cmpfunc.h:
  Optimization of AND expressions
sql/item_timefunc.cc:
  Extended WEEK() to be able to handle ISO weeks.
sql/mysqld.cc:
  unlink socket file if mysqld dies on startup
sql/sql_base.cc:
  Fixed problem with SIGHUP and INSERT DELAYED
tests/Makefile.am:
  Added missing myisam-big-rows.tst file to source distribution

mysql-test/r/func_time.result

@@ -84,6 +84,12 @@ select yearweek("2000-01-01",1) as '2000', yearweek("2001-01-01",1) as '2001', y
 select yearweek("2000-01-06",1) as '2000', yearweek("2001-01-06",1) as '2001', yearweek("2002-01-06",1) as '2002',yearweek("2003-01-06",1) as '2003', yearweek("2004-01-06",1) as '2004', yearweek("2005-01-06",1) as '2005', yearweek("2006-01-06",1) as '2006';
 2000	2001	2002	2003	2004	2005	2006
 200001	200101	200201	200302	200402	200501	200601
+select week(19981231,2), week(19981231,3), week(20000101,2), week(20000101,3);
+week(19981231,2)	week(19981231,3)	week(20000101,2)	week(20000101,3)
+52	53	52	52
+select week(20001231,2),week(20001231,3);
+week(20001231,2)	week(20001231,3)
+1	52
 select date_format('1998-12-31','%x-%v'),date_format('1999-01-01','%x-%v');
 date_format('1998-12-31','%x-%v')	date_format('1999-01-01','%x-%v')
 1998-53	1998-53

mysql-test/t/func_time.test

@@ -34,6 +34,9 @@ select yearweek("2000-01-01",0) as '2000', yearweek("2001-01-01",0) as '2001', y
 select yearweek("2000-01-06",0) as '2000', yearweek("2001-01-06",0) as '2001', yearweek("2002-01-06",0) as '2002',yearweek("2003-01-06",0) as '2003', yearweek("2004-01-06",0) as '2004', yearweek("2005-01-06",0) as '2005', yearweek("2006-01-06",0) as '2006';
 select yearweek("2000-01-01",1) as '2000', yearweek("2001-01-01",1) as '2001', yearweek("2002-01-01",1) as '2002',yearweek("2003-01-01",1) as '2003', yearweek("2004-01-01",1) as '2004', yearweek("2005-01-01",1) as '2005', yearweek("2006-01-01",1) as '2006';
 select yearweek("2000-01-06",1) as '2000', yearweek("2001-01-06",1) as '2001', yearweek("2002-01-06",1) as '2002',yearweek("2003-01-06",1) as '2003', yearweek("2004-01-06",1) as '2004', yearweek("2005-01-06",1) as '2005', yearweek("2006-01-06",1) as '2006';
+select week(19981231,2), week(19981231,3), week(20000101,2), week(20000101,3);
+select week(20001231,2),week(20001231,3);
+
 select date_format('1998-12-31','%x-%v'),date_format('1999-01-01','%x-%v');
 select date_format('1999-12-31','%x-%v'),date_format('2000-01-01','%x-%v');
 

sql/item_cmpfunc.cc

@@ -533,7 +533,6 @@ Item_func_if::fix_length_and_dec()
     else
       cached_result_type=arg1_type;		// Should be INT_RESULT
   }
-  args[0]->top_level_item();
 }
 
 
@@ -1122,6 +1121,8 @@ Item_cond::fix_fields(THD *thd,TABLE_LIST *tables)
 #endif
       item= *li.ref();				// new current item
     }
+    if (abort_on_null)
+      item->top_level_item();
     if (item->fix_fields(thd,tables))
       return 1; /* purecov: inspected */
     used_tables_cache|=item->used_tables();
@@ -1129,8 +1130,6 @@ Item_cond::fix_fields(THD *thd,TABLE_LIST *tables)
     const_item_cache&=item->const_item();
     if (item->maybe_null)
       maybe_null=1;
-    if (abort_on_null)
-      item->top_level_item();
   }
   if (thd)
     thd->cond_count+=list.elements;

sql/item_cmpfunc.h

@@ -216,6 +216,11 @@ public:
   longlong val_int();
   String *val_str(String *str);
   enum Item_result result_type () const { return cached_result_type; }
+  bool fix_fields(THD *thd,struct st_table_list *tlist)
+  {
+    args[0]->top_level_item();
+    return Item_func::fix_fields(thd,tlist);
+  }
   void fix_length_and_dec();
   const char *func_name() const { return "if"; }
   unsigned int size_of() { return sizeof(*this);}  

sql/item_timefunc.cc

@@ -175,15 +175,28 @@ longlong Item_func_second::val_int()
 }
 
 
-// Returns the week of year in the range of 0 - 53
+/*
+  Returns the week of year.
+
+  The bits in week_format has the following meaning:
+    0	If not set:	USA format: Sunday is first day of week
+        If set:		ISO format: Monday is first day of week
+    1   If not set:	Week is in range 0-53
+    	If set		Week is in range 1-53.
+*/
 
 longlong Item_func_week::val_int()
 {
   uint year;
+  uint week_format;
   TIME ltime;
   if (get_arg0_date(&ltime,0))
     return 0;
-  return (longlong) calc_week(&ltime, 0, args[1]->val_int() == 0, &year);
+  week_format= args[1]->val_int();
+  return (longlong) calc_week(&ltime, 
+			      (week_format & 2) != 0,
+			      (week_format & 1) == 0,
+			      &year);
 }
 
 
@@ -193,7 +206,7 @@ longlong Item_func_yearweek::val_int()
   TIME ltime;
   if (get_arg0_date(&ltime,0))
     return 0;
-  week=calc_week(&ltime, 1, args[1]->val_int() == 0, &year);
+  week=calc_week(&ltime, 1, (args[1]->val_int() & 1) == 0, &year);
   return week+year*100;
 }
 

sql/mysqld.cc

@@ -2003,6 +2003,8 @@ int main(int argc, char **argv)
   if (ha_init())
   {
     sql_print_error("Can't init databases");
+    if (unix_sock != INVALID_SOCKET)
+      unlink(mysql_unix_port);
     exit(1);
   }
   ha_key_cache();
@@ -2038,6 +2040,8 @@ int main(int argc, char **argv)
       pthread_key_create(&THR_MALLOC,NULL))
   {
     sql_print_error("Can't create thread-keys");
+    if (unix_sock != INVALID_SOCKET)
+      unlink(mysql_unix_port);
     exit(1);
   }
   start_signal_handler();				// Creates pidfile
@@ -2050,6 +2054,8 @@ int main(int argc, char **argv)
     if (!opt_bootstrap)
       (void) my_delete(pidfile_name,MYF(MY_WME));	// Not needed anymore
 #endif
+    if (unix_sock != INVALID_SOCKET)
+      unlink(mysql_unix_port);
     exit(1);
   }
   if (!opt_noacl)
@@ -4467,8 +4473,8 @@ fn_format_relative_to_data_home(my_string to, const char *name,
 static void fix_paths(void)
 {
   char buff[FN_REFLEN];
-  (void) fn_format(mysql_home,mysql_home,"","",16); // Remove symlinks
   convert_dirname(mysql_home,mysql_home,NullS);
+  my_realpath(mysql_home,mysql_home,MYF(0));
   convert_dirname(mysql_real_data_home,mysql_real_data_home,NullS);
   convert_dirname(language,language,NullS);
   (void) my_load_path(mysql_home,mysql_home,""); // Resolve current dir

sql/sql_base.cc

@@ -376,14 +376,14 @@ bool close_cached_tables(THD *thd, bool if_wait_for_refresh,
     if (!found)
       if_wait_for_refresh=0;			// Nothing to wait for
   }
+  if (!tables)
+    kill_delayed_threads();
   if (if_wait_for_refresh)
   {
     /*
       If there is any table that has a lower refresh_version, wait until
       this is closed (or this thread is killed) before returning
     */
-    if (!tables)
-      kill_delayed_threads();
     thd->mysys_var->current_mutex= &LOCK_open;
     thd->mysys_var->current_cond= &COND_refresh;
     thd->proc_info="Flushing tables";

tests/Makefile.am

@@ -24,7 +24,7 @@ EXTRA_DIST =		auto_increment.res auto_increment.tst \
 			insert_and_repair.pl \
 			grant.pl grant.res test_delayed_insert.pl \
 			pmail.pl mail_to_db.pl table_types.pl \
-			udf_test udf_test.res
+			udf_test udf_test.res myisam-big-rows.tst
 
 # Don't update the files from bitkeeper
 %::SCCS/s.%