Added support for DROP TEMPORARY TABLE

Removed mysql_warnings() API function.
Post merge fixes.


client/mysqltest.c:
  Don't use mysql_warnings().
include/mysql.h:
  Removed mysql_warnings() API function
libmysql/libmysql.c:
  Removed mysql_warnings() API function
mysql-test/r/rpl_log_pos.result:
  Updated results
mysql-test/t/connect.test:
  Removed empty lines
mysql-test/t/rpl_log_pos.test:
  Update to new syntax
sql/item.h:
  Fix after merge
sql/item_create.cc:
  Fix after merge
sql/mysql_priv.h:
  Added support for DROP TEMPORARY TABLE
sql/sql_db.cc:
  Added support for DROP TEMPORARY TABLE
sql/sql_parse.cc:
  SHOW WARNINGS now shows notes, warnings and errors.
  Support for DROP TEMPORARY TABLE
  Post merge fixes
sql/sql_repl.cc:
  Post merge fixes
sql/sql_table.cc:
  Added support for DROP TEMPORARY TABLE

client/mysqltest.c

@@ -2207,10 +2207,15 @@ int run_query(MYSQL* mysql, struct st_query* q, int flags)
   /* Add all warnings to the result */
   if (!disable_result_log && mysql_warning_count(mysql))
   {
-    MYSQL_RES *warn_res= mysql_warnings(mysql);
+    MYSQL_RES *warn_res=0;
+    uint count= mysql_warning_count(mysql);
+    if (!mysql_real_query(mysql, "SHOW WARNINGS", 13))
+    {
+      warn_res=mysql_store_result(mysql);
+    }
     if (!warn_res)
-      verbose_msg("Warning count is %d but didn't get any warnings\n",
-		  mysql_warning_count(mysql));
+      verbose_msg("Warning count is %u but didn't get any warnings\n",
+		  count);
     else
     {
       dynstr_append_mem(ds, "Warnings:\n", 10);

include/mysql.h

@@ -381,7 +381,6 @@ MYSQL_RES *	STDCALL mysql_list_fields(MYSQL *mysql, const char *table,
 MYSQL_RES *	STDCALL mysql_list_processes(MYSQL *mysql);
 MYSQL_RES *	STDCALL mysql_store_result(MYSQL *mysql);
 MYSQL_RES *	STDCALL mysql_use_result(MYSQL *mysql);
-MYSQL_RES *	STDCALL mysql_warnings(MYSQL *mysql);
 int		STDCALL mysql_options(MYSQL *mysql,enum mysql_option option,
 				      const char *arg);
 void		STDCALL mysql_free_result(MYSQL_RES *result);

libmysql/libmysql.c

@@ -3515,18 +3515,6 @@ uint STDCALL mysql_thread_safe(void)
 #endif
 }
 
-MYSQL_RES *STDCALL mysql_warnings(MYSQL *mysql)
-{
-  uint warning_count;
-  DBUG_ENTER("mysql_warnings");
-  /* Save warning count as mysql_real_query may change this */
-  warning_count= mysql->warning_count;
-  if (mysql_real_query(mysql, "SHOW WARNINGS", 13))
-    DBUG_RETURN(0);
-  mysql->warning_count= warning_count;
-  DBUG_RETURN(mysql_store_result(mysql));
-}
-
 /****************************************************************************
   Some support functions
 ****************************************************************************/

mysql-test/r/rpl_log_pos.result

@@ -10,9 +10,9 @@ master-bin.000001	79
 show slave status;
 Master_Host	Master_User	Master_Port	Connect_retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_do_db	Replicate_ignore_db	Last_errno	Last_error	Skip_counter	Exec_master_log_pos	Relay_log_space
 127.0.0.1	root	MASTER_PORT	1	master-bin.000001	79	slave-relay-bin.000002	123	master-bin.000001	Yes	Yes			0		0	79	127
-slave stop;
+stop slave;
 change master to master_log_pos=73;
-slave start;
+start slave;
 stop slave;
 change master to master_log_pos=73;
 show slave status;
@@ -35,7 +35,7 @@ create table if not exists t1 (n int);
 drop table if exists t1;
 create table t1 (n int);
 insert into t1 values (1),(2),(3);
-slave stop;
+stop slave;
 change master to master_log_pos=79;
 start slave;
 select * from t1;

mysql-test/t/connect.test

@@ -63,5 +63,3 @@ show tables;
 #--error 1045
 #connect (con1,localhost,test,zorro,);
 #--error 1045
-
-

mysql-test/t/rpl_log_pos.test

@@ -6,9 +6,9 @@ show master status;
 sync_slave_with_master;
 --replace_result 3306 MASTER_PORT 9306 MASTER_PORT 3334 MASTER_PORT 3336 MASTER_PORT
 show slave status;
-slave stop;
+stop slave;
 change master to master_log_pos=73;
-slave start;
+start slave;
 sleep 5;
 stop slave;
 
@@ -19,7 +19,7 @@ start slave;
 sleep 5;
 --replace_result 3306 MASTER_PORT 9306 MASTER_PORT 3334 MASTER_PORT 3336 MASTER_PORT
 show slave status;
-slave stop;
+stop slave;
 change master to master_log_pos=173;
 --replace_result 3306 MASTER_PORT 9306 MASTER_PORT 3334 MASTER_PORT 3336 MASTER_PORT
 start slave;
@@ -34,7 +34,7 @@ create table t1 (n int);
 insert into t1 values (1),(2),(3);
 save_master_pos;
 connection slave;
-slave stop;
+stop slave;
 change master to master_log_pos=79;
 start slave;
 sync_with_master;

sql/item.h

@@ -381,7 +381,8 @@ public:
     name=(char*) str_value.ptr();
     decimals=NOT_FIXED_DEC;
   }
-  Item_string(const char *name_par,const char *str,uint length,CHARSET_INFO *cs)
+  Item_string(const char *name_par,const char *str,uint length,
+	      CHARSET_INFO *cs)
   {
     str_value.set(str,length,cs);
     max_length=length;

sql/item_create.cc

@@ -311,7 +311,8 @@ Item *create_func_current_user()
 
   length= (uint) (strxmov(buff, thd->priv_user, "@", thd->host_or_ip, NullS) -
 		  buff);
-  return new Item_string("CURRENT_USER()", thd->memdup(buff, length), length);
+  return new Item_string("CURRENT_USER()", thd->memdup(buff, length), length,
+			 default_charset_info);
 }
 
 Item *create_func_quarter(Item* a)

sql/mysql_priv.h

@@ -323,11 +323,12 @@ int mysql_create_db(THD *thd, char *db, HA_CREATE_INFO *create, bool silent);
 int mysql_alter_db(THD *thd, const char *db, HA_CREATE_INFO *create);
 int mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent);
 void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos, ushort flags);
-int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists);
+int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists,
+		   my_bool drop_temporary);
 int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
-			 bool log_query);
+			 bool drop_temporary, bool log_query);
 int mysql_rm_table_part2_with_lock(THD *thd, TABLE_LIST *tables,
-				   bool if_exists,
+				   bool if_exists, bool drop_temporary,
 				   bool log_query);
 int quick_rm_table(enum db_type base,const char *db,
 		   const char *table_name);

sql/sql_db.cc

@@ -468,7 +468,7 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp, const char *db,
   my_dirend(dirp);
 
   if (thd->killed ||
-      (tot_list && mysql_rm_table_part2_with_lock(thd, tot_list, 1, 1)))
+      (tot_list && mysql_rm_table_part2_with_lock(thd, tot_list, 1, 0, 1)))
     DBUG_RETURN(-1);
 
   /*

sql/sql_parse.cc

@@ -963,7 +963,7 @@ bool do_command(THD *thd)
   }
   else if (!packet_length)
   {
-    send_error(net,net->last_errno,NullS);
+    send_error(thd,net->last_errno,NullS);
     net->error=0;
     DBUG_RETURN(FALSE);
   }
@@ -1629,7 +1629,9 @@ mysql_execute_command(THD *thd)
   {
     res= mysqld_show_warnings(thd, (ulong)
 			      ((1L << (uint) MYSQL_ERROR::WARN_LEVEL_NOTE) |
-			       (1L << (uint) MYSQL_ERROR::WARN_LEVEL_WARN)));
+			       (1L << (uint) MYSQL_ERROR::WARN_LEVEL_WARN) |
+			       (1L << (uint) MYSQL_ERROR::WARN_LEVEL_ERROR)
+			       ));
     break;
   }
   case SQLCOM_SHOW_ERRORS:
@@ -1883,7 +1885,7 @@ mysql_execute_command(THD *thd)
   */
   if (thd->locked_tables || thd->active_transaction())
   {
-    send_error(&thd->net,ER_LOCK_OR_ACTIVE_TRANSACTION);
+    send_error(thd,ER_LOCK_OR_ACTIVE_TRANSACTION);
     break;
   }
   {
@@ -2293,12 +2295,17 @@ mysql_execute_command(THD *thd)
   }
   case SQLCOM_DROP_TABLE:
   {
-    if (check_table_access(thd,DROP_ACL,tables))
-      goto error;				/* purecov: inspected */
-    if (end_active_trans(thd))
-      res= -1;
-    else
-      res = mysql_rm_table(thd,tables,lex->drop_if_exists);
+    if (!lex->drop_temporary)
+    {
+      if (check_table_access(thd,DROP_ACL,tables))
+	goto error;				/* purecov: inspected */
+      if (end_active_trans(thd))
+      {
+	res= -1;
+	break;
+      }
+    }
+    res= mysql_rm_table(thd,tables,lex->drop_if_exists, lex->drop_temporary);
   }
   break;
   case SQLCOM_DROP_INDEX:
@@ -3777,9 +3784,9 @@ bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables)
  if (thd && !error_already_sent)
  {
    if (result)
-     send_error(&thd->net,0);
+     send_error(thd,0);
    else
-     send_ok(&thd->net);
+     send_ok(thd);
  }
 
  return result;

sql/sql_repl.cc

@@ -757,7 +757,7 @@ int reset_slave(THD *thd, MASTER_INFO* mi)
 err:
   unlock_slave_threads(mi);
   if (thd && error) 
-    send_error(&thd->net, sql_errno, errmsg);
+    send_error(thd, sql_errno, errmsg);
   DBUG_RETURN(error);
 }
 
@@ -802,7 +802,7 @@ int change_master(THD* thd, MASTER_INFO* mi)
   init_thread_mask(&thread_mask,mi,0 /*not inverse*/);
   if (thread_mask) // We refuse if any slave thread is running
   {
-    net_printf(&thd,ER_SLAVE_MUST_STOP);
+    net_printf(thd,ER_SLAVE_MUST_STOP);
     unlock_slave_threads(mi);
     DBUG_RETURN(1);
   }
@@ -874,7 +874,7 @@ int change_master(THD* thd, MASTER_INFO* mi)
 			 0 /* not only reset, but also reinit */,
 			 &errmsg))
     {
-      net_printf(&thd, 0, "Failed purging old relay logs: %s",errmsg);
+      net_printf(thd, 0, "Failed purging old relay logs: %s",errmsg);
       unlock_slave_threads(mi);
       DBUG_RETURN(1);
     }
@@ -908,7 +908,7 @@ int change_master(THD* thd, MASTER_INFO* mi)
 
   unlock_slave_threads(mi);
   thd->proc_info = 0;
-  send_ok(&thd);
+  send_ok(thd);
   DBUG_RETURN(0);
 }
 

sql/sql_table.cc

@@ -46,7 +46,8 @@ static int copy_data_between_tables(TABLE *from,TABLE *to,
 ** This will wait for all users to free the table before dropping it
 *****************************************************************************/
 
-int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists)
+int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists,
+		   my_bool drop_temporary)
 {
   int error;
   DBUG_ENTER("mysql_rm_table");
@@ -57,7 +58,7 @@ int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists)
   thd->mysys_var->current_cond= &COND_refresh;
   VOID(pthread_mutex_lock(&LOCK_open));
 
-  if (global_read_lock)
+  if (!drop_temporary && global_read_lock)
   {
     if (thd->global_read_lock)
     {
@@ -72,7 +73,7 @@ int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists)
     }
 
   }
-  error=mysql_rm_table_part2(thd,tables,if_exists,0);
+  error=mysql_rm_table_part2(thd,tables, if_exists, drop_temporary, 0);
 
  err:
   pthread_mutex_unlock(&LOCK_open);
@@ -91,14 +92,15 @@ int mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists)
 
 int mysql_rm_table_part2_with_lock(THD *thd,
 				   TABLE_LIST *tables, bool if_exists,
-				   bool dont_log_query)
+				   bool drop_temporary, bool dont_log_query)
 {
   int error;
   thd->mysys_var->current_mutex= &LOCK_open;
   thd->mysys_var->current_cond= &COND_refresh;
   VOID(pthread_mutex_lock(&LOCK_open));
 
-  error=mysql_rm_table_part2(thd,tables, if_exists, dont_log_query);
+  error=mysql_rm_table_part2(thd,tables, if_exists, drop_temporary,
+			     dont_log_query);
 
   pthread_mutex_unlock(&LOCK_open);
   VOID(pthread_cond_broadcast(&COND_refresh)); // Signal to refresh
@@ -111,6 +113,17 @@ int mysql_rm_table_part2_with_lock(THD *thd,
 }
 
 /*
+  Execute the drop of a normal or temporary table
+
+  SYNOPSIS
+    mysql_rm_table_part2()
+    thd			Thread handler
+    tables		Tables to drop
+    if_exists		If set, don't give an error if table doesn't exists.
+			In this case we give an warning of level 'NOTE'
+    drop_temporary	Only drop temporary tables
+    dont_log_query	Don't log the query
+
   TODO:
     When logging to the binary log, we should log
     tmp_tables and transactional tables as separate statements if we
@@ -120,10 +133,15 @@ int mysql_rm_table_part2_with_lock(THD *thd,
    The current code only writes DROP statements that only uses temporary
    tables to the cache binary log.  This should be ok on most cases, but
    not all.
+
+ RETURN
+   0	ok
+   1	Error
+   -1	Thread was killed
 */
 
 int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
-			 bool dont_log_query)
+			 bool drop_temporary, bool dont_log_query)
 {
   TABLE_LIST *table;
   char	path[FN_REFLEN];
@@ -142,26 +160,28 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
       continue;					// removed temporary table
     }
 
-    abort_locked_tables(thd,db,table->real_name);
-    while (remove_table_from_cache(thd,db,table->real_name) && !thd->killed)
-    {
-      dropping_tables++;
-      (void) pthread_cond_wait(&COND_refresh,&LOCK_open);
-      dropping_tables--;
-    }
-    drop_locked_tables(thd,db,table->real_name);
-    if (thd->killed)
-      DBUG_RETURN(-1);
-
-    /* remove form file and isam files */
-    strxmov(path, mysql_data_home, "/", db, "/", table->real_name, reg_ext,
-	    NullS);
-    (void) unpack_filename(path,path);
     error=0;
+    if (!drop_temporary)
+    {
+      abort_locked_tables(thd,db,table->real_name);
+      while (remove_table_from_cache(thd,db,table->real_name) && !thd->killed)
+      {
+	dropping_tables++;
+	(void) pthread_cond_wait(&COND_refresh,&LOCK_open);
+	dropping_tables--;
+      }
+      drop_locked_tables(thd,db,table->real_name);
+      if (thd->killed)
+	DBUG_RETURN(-1);
 
-    table_type=get_table_type(path);
+      /* remove form file and isam files */
+      strxmov(path, mysql_data_home, "/", db, "/", table->real_name, reg_ext,
+	      NullS);
+      (void) unpack_filename(path,path);
 
-    if (access(path,F_OK))
+      table_type=get_table_type(path);
+    }
+    if (drop_temporary || access(path,F_OK))
     {
       if (if_exists)
         store_warning(thd, ER_BAD_TABLE_ERROR, table->real_name);