Fixed bug in UNION

Fixed replication bug in load_master_data

Docs/manual.texi

@@ -5680,11 +5680,10 @@ this without sacrifying the speed or compromise the code.
 @node TODO MySQL 4.0, TODO future, TODO, TODO
 @subsection Things that should be in 4.0
 
-We plan to make MySQL Version 4.0 a ``quick'' release where we only
-add some new stuff to enable others to help us with developing new features
-into Version 4.1.  The MySQL 4.0 version should only take us about
-a month to make after which we want to stabilize it and start working on
-Version 4.1.  Version 4.0 should have the following new features:
+We have now shifted development to MySQL Version 4.0.  Most of the basic
+things we want to have in 4.0 is already done.  The target is to quickly
+implement the rest of the following features and then shift development
+to MySQL 4.1.
 
 The news section for 4.0 includes a list of the features we have already
 implemented in the 4.0 tree. @xref{News-4.0.x}.
@@ -5717,13 +5716,6 @@ Replication should work with @code{RAND()} and user variables @code{@@var}.
 Online backup with very low performance penalty.  The online backup will
 make it easy to add a new replication slave without taking down the
 master.
-@item
-@code{DELETE FROM table_name} will return the number of deleted rows. For
-fast execution one should use @code{TRUNCATE table_name}.
-@item
-Multi-table @code{DELETE} (cascading @code{DELETE} and multi-table
-@code{DELETE}.
-@item
 Allow @code{DELETE} on @code{MyISAM} tables to use the record cache.
 To do this, we need to update the threads record cache when we update
 the @code{.MYD} file.
@@ -5741,9 +5733,6 @@ Help for all commands from the client.
 @item
 Secure connections (with SSL).
 @item
-Extend the optimizer to be able to optimize some @code{ORDER BY key_name DESC}
-queries.
-@item
 @code{SHOW COLUMNS FROM table_name} (used by @code{mysql} client to allow
 expansions of column names) should not open the table, but only the
 definition file. This will require less memory and be much faster.

mysql-test/r/union.result

@@ -59,3 +59,6 @@ t2	f	1
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	4	
 t2	ALL	NULL	NULL	NULL	NULL	4	
+pseudo
+dekad
+joce

mysql-test/t/union.test

@@ -19,19 +19,19 @@ select 't1',b,count(*) from t1 group by b UNION select 't2',b,count(*) from t2 g
 # Test some error conditions with UNION
 explain select a,b from t1 union all select a,b from t2;
 
---error 1215
+--error 1216
 select a,b from t1 into outfile 'skr' union select a,b from t2;
 
---error 1215
+--error 1216
 select a,b from t1 order by a union select a,b from t2;
 
---error 1216
+--error 1217
 create table t3 select a,b from t1 union select a from t2;
 
---error 1215
+--error 1216
 insert into t3 select a from t1 order by a union select a from t2;
 
---error 1216
+--error 1217
 select a,b from t1 union select a from t2;
 
 # Test CREATE, INSERT and REPLACE
@@ -40,3 +40,18 @@ insert into t3 select a,b from t1 union all select a,b from t2;
 replace into t3 select a,b as c from t1 union all select a,b from t2;
 
 drop table t1,t2,t3;
+
+#
+# Test bug reported by joc@presence-pc.com
+#
+
+CREATE TABLE t1 (
+  `pseudo` char(35) NOT NULL default '',
+  `pseudo1` char(35) NOT NULL default '',
+  `same` tinyint(1) unsigned NOT NULL default '1',
+  PRIMARY KEY  (`pseudo1`),
+  KEY `pseudo` (`pseudo`)
+) TYPE=MyISAM;
+INSERT INTO t1 (pseudo,pseudo1,same) VALUES ('joce', 'testtt', 1),('joce', 'tsestset', 1),('dekad', 'joce', 1);
+SELECT pseudo FROM t1 WHERE pseudo1='joce' UNION SELECT pseudo FROM t1 WHERE pseudo='joce';
+drop table t1;

mysys/my_lib.c

@@ -183,7 +183,7 @@ MY_DIR	*my_dir(const char *path, myf MyFlags)
   my_errno=errno;
   if (dirp)
     (void) closedir(dirp);
-  if (MyFlags & (MY_FAE+MY_WME))
+  if (MyFlags & (MY_FAE | MY_WME))
     my_error(EE_DIR,MYF(ME_BELL+ME_WAITTANG),path,my_errno);
   DBUG_RETURN((MY_DIR *) NULL);
 } /* my_dir */

sql/mysql_priv.h

@@ -237,7 +237,8 @@ inline THD *_current_thd(void)
 #include "opt_range.h"
 
 
-int mysql_create_db(THD *thd, char *db, uint create_info);
+int mysql_create_db(THD *thd, char *db, uint create_info, bool silent);
+int mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent);
 void mysql_binlog_send(THD* thd, char* log_ident, ulong pos, ushort flags);
 int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists);
 int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
@@ -262,7 +263,6 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 		      char* packet, uint packet_length);
 bool check_stack_overrun(THD *thd,char *dummy);
 bool reload_acl_and_cache(THD *thd, uint options, TABLE_LIST *tables);
-int mysql_rm_db(THD *thd,char *db,bool if_exists);
 void table_cache_init(void);
 void table_cache_free(void);
 uint cached_tables(void);

sql/sql_base.cc

@@ -1780,27 +1780,34 @@ bool setup_tables(TABLE_LIST *tables)
 {
   DBUG_ENTER("setup_tables");
   uint tablenr=0;
-  for (TABLE_LIST *table=tables ; table ; table=table->next,tablenr++)
+  for (TABLE_LIST *table_list=tables ; table_list ;
+       table_list=table_list->next,tablenr++)
   {
-    table->table->tablenr=tablenr;
-    table->table->map= (table_map) 1 << tablenr;
-    if ((table->table->outer_join=table->outer_join))
-      table->table->maybe_null=1;		// LEFT OUTER JOIN ...
-    if (table->use_index)
+    TABLE *table=table_list->table;
+
+    table->used_fields=0;
+    table->const_table=0;
+    table->outer_join=table->null_row=0;
+    table->status=STATUS_NO_RECORD;
+    table->keys_in_use_for_query=table->used_keys= table->keys_in_use;
+    table->maybe_null=test(table->outer_join=table_list->outer_join);
+    table->tablenr=tablenr;
+    table->map= (table_map) 1 << tablenr;
+    if (table_list->use_index)
     {
-      key_map map= get_key_map_from_key_list(table->table,
-					     table->use_index);
+      key_map map= get_key_map_from_key_list(table,
+					     table_list->use_index);
       if (map == ~(key_map) 0)
 	DBUG_RETURN(1);
-      table->table->keys_in_use_for_query=map;
+      table->keys_in_use_for_query=map;
     }
-    if (table->ignore_index)
+    if (table_list->ignore_index)
     {
-      key_map map= get_key_map_from_key_list(table->table,
-					     table->ignore_index);
+      key_map map= get_key_map_from_key_list(table,
+					     table_list->ignore_index);
       if (map == ~(key_map) 0)
 	DBUG_RETURN(1);
-      table->table->keys_in_use_for_query &= ~map;
+      table->keys_in_use_for_query &= ~map;
     }
   }
   if (tablenr > MAX_TABLES)

sql/sql_db.cc

@@ -31,7 +31,7 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp,
 
 /* db-name is already validated when we come here */
 
-int mysql_create_db(THD *thd, char *db, uint create_options)
+int mysql_create_db(THD *thd, char *db, uint create_options, bool silent)
 {
   char	 path[FN_REFLEN+16];
   MY_DIR *dirp;
@@ -56,9 +56,8 @@ int mysql_create_db(THD *thd, char *db, uint create_options)
     my_dirend(dirp);
     if (!(create_options & HA_LEX_CREATE_IF_NOT_EXISTS))
     {
-      if (thd)
-        net_printf(&thd->net,ER_DB_CREATE_EXISTS,db);
-      error = 1;
+      my_error(ER_DB_CREATE_EXISTS,MYF(0),db);
+      error = -1;
       goto exit;
     }
     result = 0;
@@ -68,14 +67,13 @@ int mysql_create_db(THD *thd, char *db, uint create_options)
     strend(path)[-1]=0;				// Remove last '/' from path
     if (my_mkdir(path,0777,MYF(0)) < 0)
     {
-      if (thd)
-        net_printf(&thd->net,ER_CANT_CREATE_DB,db,my_errno);
-      error = 1;
+      my_error(ER_CANT_CREATE_DB,MYF(0),db,my_errno);
+      error = -1;
       goto exit;
     }
   }
 
-  if (thd)
+  if (!silent)
   {
     if (!thd->query)
     {
@@ -124,7 +122,7 @@ static TYPELIB known_extentions=
 */
 
 
-int mysql_rm_db(THD *thd,char *db,bool if_exists)
+int mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent)
 {
   long deleted=0;
   int error = 0;
@@ -144,22 +142,23 @@ int mysql_rm_db(THD *thd,char *db,bool if_exists)
   (void) sprintf(path,"%s/%s",mysql_data_home,db);
   unpack_dirname(path,path);			// Convert if not unix
   /* See if the directory exists */
-  if (!(dirp = my_dir(path,MYF(MY_WME | MY_DONT_SORT))))
-  {
-    if (thd)
+  if (!(dirp = my_dir(path,MYF(MY_DONT_SORT))))
   {
     if (!if_exists)
-	net_printf(&thd->net,ER_DB_DROP_EXISTS,db);
-      else 
-	send_ok(&thd->net,0);
+    {
+      error= -1;
+      my_error(ER_DB_DROP_EXISTS,MYF(0),db);
     }
-    error = !if_exists;
+    else if (!silent)
+      send_ok(&thd->net,0);
     goto exit;
   }
   remove_db_from_cache(db);
 
   error = -1;
   if ((deleted=mysql_rm_known_files(thd, dirp, db, path,0)) >= 0 && thd)
+  {
+    if (!silent)
     {
       if (!thd->query)
       {
@@ -179,6 +178,7 @@ int mysql_rm_db(THD *thd,char *db,bool if_exists)
 	thd->query_length = 0;
       }
       send_ok(&thd->net,(ulong) deleted);
+    }
     error = 0;
   }
 

sql/sql_parse.cc

@@ -903,7 +903,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
       if (check_access(thd,CREATE_ACL,db,0,1))
 	break;
       mysql_log.write(thd,command,packet);
-      mysql_create_db(thd,db,0);
+      mysql_create_db(thd,db,0,0);
       break;
     }
   case COM_DROP_DB:				// QQ: To be removed
@@ -921,7 +921,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 	break;
       }
       mysql_log.write(thd,command,db);
-      mysql_rm_db(thd,db,0);
+      mysql_rm_db(thd,db,0,0);
       break;
     }
   case COM_BINLOG_DUMP:
@@ -1974,7 +1974,7 @@ mysql_execute_command(void)
     }
     if (check_access(thd,CREATE_ACL,lex->name,0,1))
       break;
-    res=mysql_create_db(thd,lex->name,lex->create_info.options);
+    res=mysql_create_db(thd,lex->name,lex->create_info.options,0);
     break;
   }
   case SQLCOM_DROP_DB:
@@ -1991,7 +1991,7 @@ mysql_execute_command(void)
       send_error(&thd->net,ER_LOCK_OR_ACTIVE_TRANSACTION);
       goto error;
     }
-    res=mysql_rm_db(thd,lex->name,lex->drop_if_exists);
+    res=mysql_rm_db(thd,lex->name,lex->drop_if_exists,0);
     break;
   }
   case SQLCOM_CREATE_FUNCTION:

sql/sql_repl.cc

@@ -1531,11 +1531,10 @@ int load_master_data(THD* thd)
 	continue;
       }
 
-      if ((drop_error = mysql_rm_db(0, db, 1)) ||
-	  mysql_create_db(0, db, 0))
+      if (mysql_rm_db(thd, db, 1,1) ||
+	  mysql_create_db(thd, db, 0, 1))
       {
-	error = (drop_error) ? ER_DB_DROP_DELETE : ER_CANT_CREATE_DB;
-	net_printf(&thd->net, error, db, my_error);
+	send_error(&thd->net, 0, 0);
 	cleanup_mysql_results(db_res, cur_table_res - 1, table_res);
 	goto err;
       }

sql/sql_union.cc

@@ -73,10 +73,11 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
 		       (ORDER*) sl->group_list.first,
 		       sl->having,
 		       (ORDER*) NULL,
-		       sl->options | thd->options | SELECT_NO_UNLOCK | SELECT_DESCRIBE,
+		       (sl->options | thd->options | SELECT_NO_UNLOCK |
+			SELECT_DESCRIBE),
 		       result);
     }
-    return 0;
+    DBUG_RETURN(0);
   } 
 
   order = (ORDER *) last_sl->order_list.first;

tools/mysqlmanager.c

@@ -22,25 +22,21 @@
 
 #include <my_global.h>
 #include <my_sys.h>
+#include <my_pthread.h>
+#include <m_ctype.h>
 #include <m_string.h>
 #include <mysql.h>
 #include <mysql_version.h>
-#include <m_ctype.h>
-#include <my_config.h>
+#include <mysqld_error.h>
 #include <my_dir.h>
 #include <hash.h>
-#include <mysqld_error.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <getopt.h>
 #include <stdarg.h>
+#include <violite.h>
+#include <signal.h>
 #include <sys/stat.h>
-#include <sys/types.h>
 #include <sys/wait.h>
-#include <unistd.h>
 #include <errno.h>
-#include <violite.h>
-#include <my_pthread.h>
 
 #define MANAGER_VERSION "1.0"
 #define MANAGER_GREETING "MySQL Server Management Daemon v." ## \
@@ -827,7 +823,7 @@ LOG_MSG_FUNC(info,INFO)
 #ifndef DBUG_OFF
 LOG_MSG_FUNC(debug,DEBUG)
 #else
-inline void log_debug(char* __attribute__((unused)) fmt,...) {}
+void log_debug(char* __attribute__((unused)) fmt,...) {}
 #endif
 
 static pthread_handler_decl(process_launcher_messages,
@@ -905,6 +901,7 @@ static pthread_handler_decl(process_connection,arg)
   }
   manager_thd_free(thd);
   pthread_exit(0);
+  return 0;					/* Don't get cc warning */
 }
 
 static void client_msg_raw(Vio* vio, int err_code, int pre, const char* fmt,
@@ -1151,13 +1148,15 @@ static int run_server_loop()
 {
   pthread_t th;
   struct manager_thd *thd;
-  int client_sock,len;
+  int client_sock;
+  uint len;
   Vio* vio;
 
   for (;!shutdown_requested;)
   {
     len=sizeof(struct sockaddr_in);
-    if ((client_sock=accept(manager_sock,(struct sockaddr*)&manager_addr,&len))<0)
+    if ((client_sock=accept(manager_sock,(struct sockaddr*)&manager_addr,
+			    &len)) <0)
     {
       if (shutdown_requested)
 	break;
@@ -1531,7 +1530,7 @@ static int daemonize()
 int main(int argc, char** argv)
 {
   char c;
-  stack_bottom=&c;
+  stack_bottom= (uchar *) &c;
   MY_INIT(argv[0]);
   errfp = stderr;
   parse_args(argc,argv);