Merge work:/my/mysql into tik.mysql.fi:/home/my/mysql

mysql-test/r/order_by.result

@@ -111,3 +111,34 @@ DateOfAction	TransactionID
 member_id	nickname	voornaam
 1		
 2		
+gid	sid	uid
+104620	5	15
+103867	5	27
+103962	5	27
+104619	5	75
+104505	5	117
+103853	5	250
+gid	sid	uid
+104620	5	15
+103867	5	27
+103962	5	27
+104619	5	75
+104505	5	117
+103853	5	250
+table	type	possible_keys	key	key_len	ref	rows	Extra
+t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index
+t2	eq_ref	PRIMARY,uid	PRIMARY	4	t1.gid	1	
+t3	eq_ref	PRIMARY	PRIMARY	2	t2.uid	1	where used; Using index
+table	type	possible_keys	key	key_len	ref	rows	Extra
+t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index
+t3	eq_ref	PRIMARY	PRIMARY	2	t1.gid	1	where used
+table	type	possible_keys	key	key_len	ref	rows	Extra
+t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index; Using temporary; Using filesort
+t2	eq_ref	PRIMARY,uid	PRIMARY	4	t1.gid	1	
+t3	eq_ref	PRIMARY	PRIMARY	2	t2.uid	1	where used; Using index
+table	type	possible_keys	key	key_len	ref	rows	Extra
+t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index; Using temporary; Using filesort
+t3	eq_ref	PRIMARY	PRIMARY	2	t1.gid	1	where used
+table	type	possible_keys	key	key_len	ref	rows	Extra
+t1	ALL	NULL	NULL	NULL	NULL	6	Using temporary; Using filesort
+t3	eq_ref	PRIMARY	PRIMARY	2	t1.skr	1	where used

mysql-test/t/order_by.test

@@ -168,8 +168,8 @@ drop table t1,t2,t3;
 
 #bug reported by Wouter de Jong
 
-drop table if exists members;
-CREATE TABLE members (
+drop table if exists t1;
+CREATE TABLE t1 (
   member_id int(11) NOT NULL auto_increment,
   inschrijf_datum varchar(20) NOT NULL default '',
   lastchange_datum varchar(20) NOT NULL default '',
@@ -200,8 +200,50 @@ CREATE TABLE members (
   PRIMARY KEY  (member_id)
 ) TYPE=MyISAM PACK_KEYS=1;
 
-insert into members (member_id) values (1),(2),(3);
-select member_id, nickname, voornaam FROM members
+insert into t1 (member_id) values (1),(2),(3);
+select member_id, nickname, voornaam FROM t1
 ORDER by lastchange_datum DESC LIMIT 2;
-drop table members;
+drop table t1;
+
+#
+# Test optimizing bug with EQ_REF tables, where some ORDER BY parts where
+# wrongly removed.
 
+CREATE TABLE t1 (
+  gid int(10) unsigned NOT NULL auto_increment,
+  cid smallint(5) unsigned NOT NULL default '0',
+  PRIMARY KEY  (gid),
+  KEY component_id (cid)
+) TYPE=MyISAM;
+INSERT INTO t1 VALUES (103853,108),(103867,108),(103962,108),(104505,108),(104619,108),(104620,108);
+ALTER TABLE t1 add skr int(10) not null;
+
+CREATE TABLE t2 (
+  gid int(10) unsigned NOT NULL default '0',
+  uid smallint(5) unsigned NOT NULL default '1',
+  sid tinyint(3) unsigned NOT NULL default '1',
+  PRIMARY KEY  (gid),
+  KEY uid (uid),
+  KEY status_id (sid)
+) TYPE=MyISAM;
+INSERT INTO t2 VALUES (103853,250,5),(103867,27,5),(103962,27,5),(104505,117,5),(104619,75,5),(104620,15,5);
+
+CREATE TABLE t3 (
+  uid smallint(6) NOT NULL auto_increment,
+  PRIMARY KEY  (uid)
+) TYPE=MyISAM;
+INSERT INTO t3 VALUES (1),(15),(27),(75),(117),(250);
+ALTER TABLE t3 add skr int(10) not null;
+
+select t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
+select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
+
+# The following ORDER BY can be optimimized
+EXPLAIN select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and t2.uid = t3.uid order by t1.gid, t3.uid;
+EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t1.gid,t3.skr;
+
+# The following ORDER BY can't be optimimized
+EXPLAIN SELECT t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
+EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t3.skr,t1.gid;
+EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr;
+drop table t1,t2,t3;

mysys/default.c

@@ -222,7 +222,7 @@ static my_bool search_default_file(DYNAMIC_ARRAY *args, MEM_ROOT *alloc,
 				   const char *dir, const char *config_file,
 				   const char *ext, TYPELIB *group)
 {
-  char name[FN_REFLEN+10],buff[FN_REFLEN+1],*ptr,*end,*value,*tmp;
+  char name[FN_REFLEN+10],buff[4096],*ptr,*end,*value,*tmp;
   FILE *fp;
   uint line=0;
   my_bool read_values=0,found_group=0;

scripts/mysqlhotcopy.sh

@@ -223,18 +223,27 @@ foreach my $rdb ( @db_desc ) {
     my $db = $rdb->{src};
     eval { $dbh->do( "use $db" ); };
     die "Database '$db' not accessible: $@"  if ( $@ );
-    my @dbh_tables = $dbh->func( '_ListTables' );
+    my @dbh_tables = $dbh->tables();
 
     ## generate regex for tables/files
-    my $t_regex = $rdb->{t_regex};        ## assign temporary regex
-    my $negated = $t_regex =~ tr/~//d;    ## remove and count negation operator: we don't allow ~ in table names
-    $t_regex = qr/$t_regex/;              ## make regex string from user regex
+    my $t_regex;
+    my $negated;
+    if ($rdb->{t_regex}) {
+        $t_regex = $rdb->{t_regex};        ## assign temporary regex
+        $negated = $t_regex =~ tr/~//d;    ## remove and count
+                                           ## negation operator: we
+                                           ## don't allow ~ in table
+                                           ## names
+
+        $t_regex = qr/$t_regex/;           ## make regex string from
+                                           ## user regex
 
         ## filter (out) tables specified in t_regex
         print "Filtering tables with '$t_regex'\n" if $opt{debug};
         @dbh_tables = ( $negated 
                         ? grep { $_ !~ $t_regex } @dbh_tables
                         : grep { $_ =~ $t_regex } @dbh_tables );
+    }
 
     ## get list of files to copy
     my $db_dir = "$datadir/$db";
@@ -249,10 +258,18 @@ foreach my $rdb ( @db_desc ) {
     closedir( DBDIR );
 
     ## filter (out) files specified in t_regex
-    my @db_files = ( $negated 
+    my @db_files;
+    if ($rdb->{t_regex}) {
+        @db_files = ($negated
                      ? grep { $db_files{$_} !~ $t_regex } keys %db_files
                      : grep { $db_files{$_} =~ $t_regex } keys %db_files );
+    }
+    else {
+        @db_files = keys %db_files;
+    }
+
     @db_files = sort @db_files;
+
     my @index_files=();
 
     ## remove indices unless we're told to keep them
@@ -809,3 +826,7 @@ Ask Bjoern Hansen - Cleanup code to fix a few bugs and enable -w again.
 
 Emil S. Hansen - Added resetslave and resetmaster.
 
+Jeremy D. Zawodny - Removed depricated DBI calls.  Fixed bug which
+resulted in nothing being copied when a regexp was specified but no
+database name(s).
+

sql/sql_select.cc

@@ -2649,12 +2649,12 @@ static void update_depend_map(JOIN *join)
     for (i=0 ; i < ref->key_parts ; i++,item++)
       depend_map|=(*item)->used_tables();
     ref->depend_map=depend_map;
-    for (JOIN_TAB *join_tab2=join->join_tab;
+    for (JOIN_TAB **tab=join->map2table;
 	 depend_map ;
-	 join_tab2++,depend_map>>=1 )
+	 tab++,depend_map>>=1 )
     {
       if (depend_map & 1)
-	ref->depend_map|=join_tab2->ref.depend_map;
+	ref->depend_map|=(*tab)->ref.depend_map;
     }
   }
 }
@@ -2671,12 +2671,12 @@ static void update_depend_map(JOIN *join, ORDER *order)
     order->depend_map=depend_map=order->item[0]->used_tables();
     if (!(order->depend_map & RAND_TABLE_BIT))	// Not item_sum() or RAND()
     {
-      for (JOIN_TAB *join_tab=join->join_tab;
+      for (JOIN_TAB **tab=join->map2table;
 	   depend_map ;
-	   join_tab++, depend_map>>=1)
+	   tab++, depend_map>>=1)
       {
 	if (depend_map & 1)
-	  order->depend_map|=join_tab->ref.depend_map;
+	  order->depend_map|=(*tab)->ref.depend_map;
       }
     }
   }