RENAME TABLE table_name TO new_table_name ; Faster Alloc

Small bug fixes

configure.in

@@ -1709,10 +1709,10 @@ CHARSET_COMP_CS_INIT="$CHARSET_COMP_CS_INIT
   {
     0,          /* end-of-list marker */
     NullS,
-    \"\",
-    \"\",
-    \"\",
-    \"\",
+    NULL,
+    NULL,
+    NULL,
+    NULL,
     0,
     NULL,
     NULL,

include/global.h

@@ -113,6 +113,12 @@
 #define HAVE_ATOMIC_SUB
 #endif
 
+/* In Linux-ia64 including atomic.h will give us an error */
+#if defined(HAVE_LINUXTHREADS) && defined(__GNUC__) && defined(__ia64__)
+#undef HAVE_ATOMIC_ADD
+#undef HAVE_ATOMIC_SUB
+#endif
+
 #if defined(_lint) && !defined(lint)
 #define lint
 #endif
@@ -207,6 +213,7 @@
 #endif
 
 /* Define void to stop lint from generating "null effekt" comments */
+#ifndef DONT_DEFINE_VOID
 #ifdef _lint
 int	__void__;
 #define VOID(X)		(__void__ = (int) (X))
@@ -214,6 +221,7 @@ int	__void__;
 #undef VOID
 #define VOID(X)		(X)
 #endif
+#endif /* DONT_DEFINE_VOID */
 
 #if defined(_lint) || defined(FORCE_INIT_OF_VARS)
 #define LINT_INIT(var)	var=0			/* No uninitialize-warning */
@@ -515,6 +523,8 @@ typedef long		my_ptrdiff_t;
 #define NEAR				/* Who needs segments ? */
 #define FAR				/* On a good machine */
 #define HUGE_PTR
+#endif
+#ifndef STDCALL
 #define STDCALL
 #endif
 

include/mysqld_error.h

@@ -192,4 +192,5 @@
 #define ER_MASTER_NET_READ 1189
 #define ER_MASTER_NET_WRITE 1190
 #define ER_FT_MATCHING_KEY_NOT_FOUND 1191
-#define ER_ERROR_MESSAGES 192
+#define ER_LOCK_OR_ACTIVE_TRANSACTION 1192
+#define ER_ERROR_MESSAGES 193

myisam/myisamchk.c

@@ -190,7 +190,7 @@ static struct option long_options[] =
 
 static void print_version(void)
 {
-  printf("%s  Ver 1.29 for %s at %s\n",my_progname,SYSTEM_TYPE,
+  printf("%s  Ver 1.30 for %s at %s\n",my_progname,SYSTEM_TYPE,
 	 MACHINE_TYPE);
 }
 
@@ -295,7 +295,7 @@ static void get_options(register int *argc,register char ***argv)
   set_all_changeable_vars(changeable_vars);
   if (isatty(fileno(stdout)))
     check_param.testflag|=T_WRITE_LOOP;
-  while ((c=getopt_long(*argc,*argv,"acCdeif?lqrmosSTuUvVw#:b:D:k:O:R:A::t:",
+  while ((c=getopt_long(*argc,*argv,"acCdeifF?lqrmosSTuUvVw#:b:D:k:O:R:A::t:",
 			long_options, &option_index)) != EOF)
   {
     switch(c) {
@@ -520,10 +520,30 @@ static int myisamchk(MI_CHECK *param, my_string filename)
     We are using --fast and the table is closed properly
     We are using --check-only-changed-tables and the table hasn't changed
   */
-  if (((param->testflag & T_CHECK_ONLY_CHANGED) &&
+  if (param->testflag & (T_FAST | T_CHECK_ONLY_CHANGED))
+  {
+    my_bool need_to_check= mi_is_crashed(info) || share->state.open_count != 0;
+
+    if ((param->testflag & (T_REP_BY_SORT | T_REP | T_SORT_RECORDS)) &&
+	((share->state.changed & (STATE_CHANGED | STATE_CRASHED |
+				  STATE_CRASHED_ON_REPAIR) ||
+	  !(param->testflag & T_CHECK_ONLY_CHANGED))))
+      need_to_check=1;
+
+    if ((param->testflag & T_STATISTICS) &&
+	(share->state.changed & STATE_NOT_ANALYZED))
+      need_to_check=1;
+    if ((param->testflag & T_SORT_INDEX) &&
+	(share->state.changed & STATE_NOT_SORTED_PAGES))
+      need_to_check=1;
+    if ((param->testflag & T_REP_BY_SORT) &&
+	(share->state.changed & STATE_NOT_OPTIMIZED_KEYS))
+      need_to_check=1;
+    if ((param->testflag & T_CHECK_ONLY_CHANGED) &&
 	(share->state.changed & (STATE_CHANGED | STATE_CRASHED |
-			       STATE_CRASHED_ON_REPAIR))) ||
-      (param->testflag & T_FAST) && share->state.open_count == 0)
+				 STATE_CRASHED_ON_REPAIR)))
+      need_to_check=1;
+    if (!need_to_check)
     {
       if (!(param->testflag & T_SILENT) || param->testflag & T_INFO)
 	printf("MyISAM file: %s is already checked\n",filename);
@@ -535,7 +555,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
       }
       DBUG_RETURN(0);
     }
-
+  }
   if ((param->testflag & (T_REP_BY_SORT | T_REP | T_STATISTICS |
 			  T_SORT_RECORDS | T_SORT_INDEX)) &&
       (((param->testflag & T_UNPACK) &&

myisammrg/myrg_queue.c

@@ -48,5 +48,6 @@ int _myrg_init_queue(MYRG_INFO *info,int inx,enum ha_rkey_function search_flag)
                      info->open_tables->table->s->keyinfo[inx].seg))
       return my_errno;
   }
+  return 0;
 }
 

myisammrg/myrg_rkey.c

@@ -25,6 +25,9 @@
                                                                    SerG
 */
 
+int _mi_rkey(MI_INFO *info, byte *buf, int inx, const byte *key, uint key_len,
+	     enum ha_rkey_function search_flag, bool raw_key);
+
 int myrg_rkey(MYRG_INFO *info,byte *record,int inx, const byte *key,
             uint key_len, enum ha_rkey_function search_flag)
 {

sql-bench/test-insert.sh

@@ -224,7 +224,7 @@ if ($limits->{'unique_index'})
     $tmpvar^= ((($tmpvar + 63) + $i)*3 % $opt_loop_count);
     $tmp=$tmpvar % ($total_rows);
     $tmpquery = "$query ($tmp,1,2,'D')";
-    if ($dbh->do($tmpquery))
+    if (!$dbh->do($tmpquery))
     {
       die "Didn't get an error when inserting duplicate record $tmp\n";
     }

sql/ChangeLog

+2000-08-20  Michael Widenius  <monty@mysql.com>
+
+* Added memory as inline functions to THD to get them a bit faster
+* Don't count entries with NULL in COUNT(DISTINCT ..)
+
 2000-08-08  Michael Widenius  <monty@mysql.com>
 
 * Changed ALTER TABLE and LOAD DATA INFILE to create non unique, small keys

sql/Makefile.am

@@ -66,7 +66,7 @@ mysqld_SOURCES =	sql_lex.cc \
 		   	records.cc filesort.cc handler.cc \
 		        ha_isam.cc ha_isammrg.cc ha_heap.cc \
 			ha_myisam.cc ha_myisammrg.cc ha_berkeley.cc \
-			sql_db.cc sql_table.cc sql_crypt.cc \
+			sql_db.cc sql_table.cc sql_rename.cc sql_crypt.cc \
 			sql_load.cc mf_iocache.cc field_conv.cc sql_show.cc \
 			sql_udf.cc sql_analyse.cc sql_analyse.h sql_cache.cc \
 			slave.cc \

sql/item_sum.cc

@@ -839,6 +839,10 @@ bool Item_sum_count_distinct::add()
   copy_fields(tmp_table_param);
   copy_funcs(tmp_table_param->funcs);
 
+  for (Field **field=table->field ; *field ; field++)
+    if ((*field)->is_real_null(0))
+      return 0;					// Don't count NULL
+
   if ((error=table->file->write_row(table->record[0])))
   {
     if (error != HA_ERR_FOUND_DUPP_KEY &&

sql/lock.cc

@@ -384,3 +384,87 @@ static MYSQL_LOCK *get_lock_data(THD *thd, TABLE **table_ptr, uint count,
   }
   return sql_lock;
 }
+
+/*****************************************************************************
+**  Lock table based on the name.
+**  This is used when we need total access to a closed, not open table
+*****************************************************************************/
+
+/*
+  Put a not open table with an old refresh version in the table cache.
+  This will force any other threads that uses the table to release it
+  as soon as possible.
+  One must have a lock on LOCK_open !
+  Return values:
+   < 0 error
+   == 0 table locked
+   > 0  table locked, but someone is using it
+*/
+
+
+int lock_table_name(THD *thd, TABLE_LIST *table_list)
+{
+  TABLE *table;
+  char  key[MAX_DBKEY_LENGTH];
+  uint  key_length;
+  key_length=(uint) (strmov(strmov(key,table_list->db)+1,table_list->name)-key)+
+    1;
+
+  /* Only insert the table if we haven't insert it already */
+  for (table=(TABLE*) hash_search(&open_cache,(byte*) key,key_length) ;
+       table ;
+       table = (TABLE*) hash_next(&open_cache,(byte*) key,key_length))
+    if (table->in_use == thd)
+      return 0;
+
+  /* Create a table entry with the right key and with an old refresh version */
+  if (!(table= (TABLE*) thd->calloc(sizeof(*table)+key_length)))
+    return -1;
+  memcpy((table->table_cache_key= (char*) (table+1)), key, key_length);
+  table->key_length=key_length;
+  table->in_use=thd;
+  table_list->table=table;
+
+  if (hash_insert(&open_cache, (byte*) table))
+    return -1;
+  if (remove_table_from_cache(thd, table_list->db, table_list->name))
+    return 1;					// Table is in use
+  return 0;
+}
+
+void unlock_table_name(THD *thd, TABLE_LIST *table_list)
+{
+  if (table_list->table)
+    hash_delete(&open_cache, (gptr) table_list->table);
+}
+
+static bool locked_named_table(THD *thd, TABLE_LIST *table_list)
+{
+  for ( ; table_list ; table_list=table_list->next)
+  {
+    if (table_list->table && table_is_used(table_list->table))
+      return 1;
+  }
+  return 0;					// All tables are locked
+}
+
+
+bool wait_for_locked_table_names(THD *thd, TABLE_LIST *table_list)
+{
+  bool result=0;
+
+  while (locked_named_table(thd,table_list))
+  {
+    if (thd->killed)
+    {
+      result=1;
+      break;
+    }
+    wait_for_refresh(thd);
+  }
+  pthread_mutex_lock(&thd->mysys_var->mutex);
+  thd->mysys_var->current_mutex=0;
+  thd->mysys_var->current_cond=0;
+  pthread_mutex_unlock(&thd->mysys_var->mutex);
+  return result;
+}

sql/share/danish/errmsg.txt

@@ -196,3 +196,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/dutch/errmsg.txt

@@ -193,3 +193,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/english/errmsg.txt

@@ -193,3 +193,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/estonia/errmsg.txt

@@ -197,3 +197,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/french/errmsg.txt

@@ -193,3 +193,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/german/errmsg.txt

@@ -196,3 +196,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/greek/errmsg.txt

@@ -193,3 +193,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/hungarian/errmsg.txt

@@ -195,3 +195,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/italian/errmsg.txt

@@ -193,3 +193,4 @@
 "Errore di rete ricevendo dal master",
 "Errore di rete inviando al master",
 "Impossibile trovare un indice FULLTEXT che corrisponda all'elenco delle colonne",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/japanese/errmsg.txt

@@ -195,3 +195,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/korean/errmsg.txt

@@ -193,3 +193,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/norwegian-ny/errmsg.txt

@@ -195,3 +195,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/norwegian/errmsg.txt

@@ -195,3 +195,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/polish/errmsg.txt

@@ -197,3 +197,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/portuguese/errmsg.txt

@@ -193,3 +193,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/romania/errmsg.txt

@@ -197,3 +197,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/russian/errmsg.txt

@@ -196,3 +196,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "FULLTEXT ,    ,  ",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/slovak/errmsg.txt

@@ -201,3 +201,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/spanish/errmsg.txt

@@ -194,3 +194,4 @@
 "Net error reading from master",
 "Net error writing to master",
 "Can't find FULLTEXT index matching the column list",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/swedish/errmsg.OLD

@@ -193,3 +193,5 @@
 "Fick nätverksfel vid läsning från master",
 "Fick nätverksfel vid skrivning till master",
 "Hittar inte ett FULLTEXT index i kolumnlist",
+#ER_LOCK_OR_ACTIVE_TRANSACTION
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/share/swedish/errmsg.txt

@@ -193,3 +193,4 @@
 "Fick nätverksfel vid läsning från master",
 "Fick nätverksfel vid skrivning till master",
 "Hittar inte ett FULLTEXT index i kolumnlist",
+"Can't execute the given command because you have active locked tables or an active transaction",

sql/slave.cc

@@ -406,7 +406,7 @@ static int init_slave_thread(THD* thd)
 
   if (init_thr_lock() ||
       my_pthread_setspecific_ptr(THR_THD,  thd) ||
-      my_pthread_setspecific_ptr(THR_MALLOC, &thd->alloc) ||
+      my_pthread_setspecific_ptr(THR_MALLOC, &thd->mem_root) ||
       my_pthread_setspecific_ptr(THR_NET,  &thd->net))
   {
     close_connection(&thd->net,ER_OUT_OF_RESOURCES); // is this needed?
@@ -422,7 +422,7 @@ static int init_slave_thread(THD* thd)
   VOID(pthread_sigmask(SIG_UNBLOCK,&set,&thd->block_signals));
 #endif
 
-  thd->alloc.free=thd->alloc.used=0;
+  thd->mem_root.free=thd->mem_root.used=0;	// Probably not needed
   if (thd->max_join_size == (ulong) ~0L)
     thd->options |= OPTION_BIG_SELECTS;
 
@@ -557,7 +557,7 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 	  {
 	    Query_log_event* qev = (Query_log_event*)ev;
 	    int q_len = qev->q_len;
-	    init_sql_alloc(&thd->alloc, 8192);
+	    init_sql_alloc(&thd->mem_root, 8192);
 	    thd->db = (char*)qev->db;
 	    if(db_ok(thd->db, replicate_do_db, replicate_ignore_db))
 	      {
@@ -602,8 +602,8 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 	    thd->db = 0;// prevent db from being freed
 	    thd->query = 0; // just to be sure
 	    close_thread_tables(thd);
-	    free_root(&thd->alloc);
-	    if(thd->query_error)
+	    free_root(&thd->mem_root);
+	    if (thd->query_error)
 	    {
 	      sql_print_error("Slave:  error running query '%s' ",
 			      qev->query);
@@ -626,7 +626,7 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
   	case LOAD_EVENT:
 	  {
 	    Load_log_event* lev = (Load_log_event*)ev;
-	    init_sql_alloc(&thd->alloc, 8192);
+	    init_sql_alloc(&thd->mem_root, 8192);
 	    thd->db = (char*)lev->db;
 	    thd->query = 0;
 	    thd->query_error = 0;

sql/sql_base.cc

@@ -29,8 +29,6 @@
 #include <io.h>
 #endif
 
-#define MAX_DBKEY_LENGTH (FN_LEN*2+2)
-
 static int key_cache_used=0;
 TABLE *unused_tables;				/* Used by mysql_test */
 HASH open_cache;				/* Used by mysql_test */
@@ -120,7 +118,7 @@ static byte *cache_key(const byte *record,uint *length,
 
 void table_cache_init(void)
 {
-  VOID(hash_init(&open_cache,table_cache_size,0,0,cache_key,
+  VOID(hash_init(&open_cache,table_cache_size+16,0,0,cache_key,
 		 (void (*)(void*)) free_cache_entry,0));
   mysql_rm_tmp_tables();
 }
@@ -1234,7 +1232,7 @@ void close_old_data_files(THD *thd, TABLE *table, bool abort_locks)
   if the table is closed
 */
 
-static bool table_is_used(TABLE *table)
+bool table_is_used(TABLE *table)
 {
   do
   {
@@ -2171,4 +2169,3 @@ int setup_ftfuncs(THD *thd,TABLE_LIST *tables, List<Item_func_match> &ftfuncs)
 
   return 0;
 }
-

sql/sql_class.cc

@@ -109,7 +109,7 @@ THD::THD()
   net.vio=0;
   ull=0;
   system_thread=0;
-  bzero((char*) &alloc,sizeof(alloc));
+  bzero((char*) &mem_root,sizeof(mem_root));
 #ifdef	__WIN__
   real_id = 0 ;
 #endif
@@ -154,7 +154,7 @@ THD::~THD()
   safeFree(user);
   safeFree(db);
   safeFree(ip);
-  free_root(&alloc);
+  free_root(&mem_root);
   mysys_var=0;					// Safety (shouldn't be needed)
   DBUG_VOID_RETURN;
 }
@@ -165,11 +165,10 @@ THD::~THD()
 bool THD::store_globals()
 {
   return (my_pthread_setspecific_ptr(THR_THD,  this) ||
-	  my_pthread_setspecific_ptr(THR_MALLOC, &alloc) ||
+	  my_pthread_setspecific_ptr(THR_MALLOC, &mem_root) ||
 	  my_pthread_setspecific_ptr(THR_NET,  &net));
 }
 
-
 /*****************************************************************************
 ** Functions to provide a interface to select results
 *****************************************************************************/

sql/sql_class.h

@@ -223,7 +223,7 @@ class THD :public ilink {
 public:
   NET	  net;
   LEX	  lex;
-  MEM_ROOT alloc;
+  MEM_ROOT mem_root;
   HASH     user_vars;
   String  packet;				/* Room for 1 row */
   struct  sockaddr_in remote;
@@ -287,6 +287,19 @@ public:
     }
     return last_insert_id;
   }
+  inline bool active_transaction() { return transaction.bdb_tid != 0; }
+  inline gptr alloc(unsigned int size) { return alloc_root(&mem_root,size); }
+  inline gptr calloc(unsigned int size)
+  {
+    gptr ptr;
+    if ((ptr=alloc_root(&mem_root,size)))
+      bzero((char*) ptr,size);
+    return ptr;
+  }
+  inline char *strdup(const char *str)
+  { return strdup_root(&mem_root,str); }
+  inline char *memdup(const char *str, unsigned int size)
+  { return memdup_root(&mem_root,str,size); }
 };
 
 

sql/sql_insert.cc

@@ -1215,14 +1215,19 @@ void select_insert::send_error(uint errcode,const char *err)
   ::send_error(&thd->net,errcode,err);
   table->file->extra(HA_EXTRA_NO_CACHE);
   table->file->activate_all_index(thd);
+  ha_rollback(thd);
 }
 
 
 bool select_insert::send_eof()
 {
-  int error;
-  if ((error=table->file->extra(HA_EXTRA_NO_CACHE)) ||
-      (error=table->file->activate_all_index(thd)))
+  int error,error2;
+  if (!(error=table->file->extra(HA_EXTRA_NO_CACHE)))
+    error=table->file->activate_all_index(thd);
+  if ((error2=ha_autocommit_or_rollback(thd,error)) && ! error)
+    error=error2;
+
+  if (error)
   {
     table->file->print_error(error,MYF(0));
     ::send_error(&thd->net);

sql/sql_lex.h

@@ -46,7 +46,8 @@ enum enum_sql_command {
   SQLCOM_FLUSH, SQLCOM_KILL, SQLCOM_SHOW_GRANTS, SQLCOM_ANALYZE,
   SQLCOM_ROLLBACK, SQLCOM_COMMIT, SQLCOM_SLAVE_START, SQLCOM_SLAVE_STOP,
   SQLCOM_BEGIN, SQLCOM_LOAD_MASTER_TABLE, SQLCOM_SHOW_CREATE,
-  SQLCOM_SHOW_MASTER_STAT, SQLCOM_SHOW_SLAVE_STAT, SQLCOM_CHANGE_MASTER
+  SQLCOM_SHOW_MASTER_STAT, SQLCOM_SHOW_SLAVE_STAT, SQLCOM_CHANGE_MASTER,
+  SQLCOM_RENAME_TABLE
 };
 
 enum lex_states { STATE_START, STATE_CHAR, STATE_IDENT,

sql/sql_select.cc

@@ -773,9 +773,9 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
   DBUG_ENTER("make_join_statistics");
 
   table_count=join->tables;
-  stat=(JOIN_TAB*) sql_calloc(sizeof(JOIN_TAB)*table_count);
-  stat_ref=(JOIN_TAB**) sql_alloc(sizeof(JOIN_TAB*)*MAX_TABLES);
-  table_vector=(TABLE**) sql_alloc(sizeof(TABLE**)*(table_count*2));
+  stat=(JOIN_TAB*) join->thd->calloc(sizeof(JOIN_TAB)*table_count);
+  stat_ref=(JOIN_TAB**) join->thd->alloc(sizeof(JOIN_TAB*)*MAX_TABLES);
+  table_vector=(TABLE**) join->thd->alloc(sizeof(TABLE**)*(table_count*2));
   if (!stat || !stat_ref || !table_vector)
     DBUG_RETURN(1);				// Eom /* purecov: inspected */
   select=0;
@@ -1832,7 +1832,7 @@ get_best_combination(JOIN *join)
 
   table_count=join->tables;
   if (!(join->join_tab=join_tab=
-	(JOIN_TAB*) sql_alloc(sizeof(JOIN_TAB)*table_count)))
+	(JOIN_TAB*) join->thd->alloc(sizeof(JOIN_TAB)*table_count)))
     return TRUE;
 
   join->const_tables=0;				/* for checking */
@@ -2056,8 +2056,8 @@ make_simple_join(JOIN *join,TABLE *tmp_table)
   TABLE **tableptr;
   JOIN_TAB *join_tab;
 
-  if (!(tableptr=(TABLE**) sql_alloc(sizeof(TABLE*))) ||
-      !(join_tab=(JOIN_TAB*) sql_alloc(sizeof(JOIN_TAB))))
+  if (!(tableptr=(TABLE**) join->thd->alloc(sizeof(TABLE*))) ||
+      !(join_tab=(JOIN_TAB*) join->thd->alloc(sizeof(JOIN_TAB))))
     return TRUE;
   join->join_tab=join_tab;
   join->table=tableptr; tableptr[0]=tmp_table;

sql/sql_show.cc

@@ -55,7 +55,7 @@ mysqld_show_dbs(THD *thd,const char *wild)
   char *file_name;
   DBUG_ENTER("mysqld_show_dbs");
 
-  field->name=(char*) sql_alloc(20+ (wild ? strlen(wild)+4: 0));
+  field->name=(char*) thd->alloc(20+ (wild ? strlen(wild)+4: 0));
   field->max_length=NAME_LEN;
   end=strmov(field->name,"Database");
   if (wild && wild[0])
@@ -92,7 +92,7 @@ int mysqld_show_tables(THD *thd,const char *db,const char *wild)
   char *file_name;
   DBUG_ENTER("mysqld_show_tables");
 
-  field->name=(char*) sql_alloc(20+strlen(db)+(wild ? strlen(wild)+4:0));
+  field->name=(char*) thd->alloc(20+strlen(db)+(wild ? strlen(wild)+4:0));
   end=strxmov(field->name,"Tables_in_",db,NullS);
   if (wild && wild[0])
     strxmov(end," (",wild,")",NullS);
@@ -170,7 +170,7 @@ mysql_find_files(THD *thd,List<char> *files, const char *db,const char *path,
       if (check_grant(thd,TABLE_ACLS,&table_list,1))
 	continue;
     }
-    if (files->push_back(sql_strdup(file->name)))
+    if (files->push_back(thd->strdup(file->name)))
     {
       my_dirend(dirp);
       DBUG_RETURN(-1);
@@ -868,12 +868,12 @@ void mysqld_list_processes(THD *thd,const char *user, bool verbose)
 	thread_info *thd_info=new thread_info;
 
 	thd_info->thread_id=tmp->thread_id;
-	thd_info->user=sql_strdup(tmp->user ? tmp->user : (tmp->system_thread ?
+	thd_info->user=thd->strdup(tmp->user ? tmp->user : (tmp->system_thread ?
 				  "system user" : "unauthenticated user"));
-	thd_info->host=sql_strdup(tmp->host ? tmp->host : (tmp->ip ? tmp->ip :
+	thd_info->host=thd->strdup(tmp->host ? tmp->host : (tmp->ip ? tmp->ip :
 				   (tmp->system_thread ? "none" : "connecting host")));
 	if ((thd_info->db=tmp->db))		// Safe test
-	  thd_info->db=sql_strdup(thd_info->db);
+	  thd_info->db=thd->strdup(thd_info->db);
 	thd_info->command=(int) tmp->command;
 	if (tmp->mysys_var)
 	  pthread_mutex_lock(&tmp->mysys_var->mutex);
@@ -902,7 +902,7 @@ void mysqld_list_processes(THD *thd,const char *user, bool verbose)
 	  uint length=strlen(tmp->query);
 	  if (length > max_query_length)
 	    length=max_query_length;
-	  thd_info->query=(char*) sql_memdup(tmp->query,length+1);
+	  thd_info->query=(char*) thd->memdup(tmp->query,length+1);
 	  thd_info->query[length]=0;
 	}
 	thread_infos.append(thd_info);

sql/sql_table.cc

@@ -644,7 +644,7 @@ TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
 ** Alter a table definition
 ****************************************************************************/
 
-static bool
+bool
 mysql_rename_table(enum db_type base,
 		   const char *old_db,
 		   const char * old_name,
@@ -659,9 +659,17 @@ mysql_rename_table(enum db_type base,
   (void) sprintf(to,"%s/%s/%s",mysql_data_home,new_db,new_name);
   fn_format(from,from,"","",4);
   fn_format(to,to,    "","",4);
-  if (file->rename_table((const char*) from,(const char *) to) ||
-      rename_file_ext(from,to,reg_ext))
+  if (file->rename_table((const char*) from,(const char *) to))
     error=1;
+  else
+  {
+    if (rename_file_ext(from,to,reg_ext))
+    {
+      error=1;
+      /* Restore old file name */
+      file->rename_table((const char*) to,(const char *) from);
+    }
+  }
   delete file;
   DBUG_RETURN(error);
 }
@@ -1412,7 +1420,7 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
 
 #ifdef __WIN__
   // Win32 can't rename an open table, so we must close the org table!
-  table_name=sql_strdup(table_name);		// must be saved
+  table_name=thd->strdup(table_name);		// must be saved
   if (close_cached_table(thd,table))
   {						// Aborted
     VOID(quick_rm_table(new_db_type,new_db,tmp_name));

sql/sql_yacc.yy

@@ -488,7 +488,8 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
 	query verb_clause create change select drop insert replace insert2
 	insert_values update delete show describe load alter optimize flush
 	begin commit rollback slave master_def master_defs
-	repair analyze check field_list field_list_item field_spec kill
+	repair analyze check rename
+	field_list field_list_item field_spec kill
 	select_item_list select_item values_list no_braces
 	limit_clause delete_limit_clause fields opt_values values
 	procedure_list procedure_list2 procedure_item
@@ -504,6 +505,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
 	flush_options flush_option insert_lock_option replace_lock_option
 	equal optional_braces opt_key_definition key_usage_list2
 	opt_mi_check_type opt_to mi_check_types normal_join
+	table_to_table_list table_to_table
 	END_OF_INPUT
 
 %type <NONE>
@@ -539,6 +541,7 @@ verb_clause:
 	| lock
 	| kill
 	| optimize
+	| rename
         | repair
 	| replace
 	| revoke
@@ -1078,6 +1081,7 @@ opt_place:
 opt_to:
 	/* empty */	{}
 	| TO_SYM	{}
+	| AS		{}
 
 slave:
 	SLAVE START_SYM
@@ -1134,6 +1138,24 @@ optimize:
 	     YYABORT;
 	}
 
+rename:
+	RENAME table_or_tables
+	{
+	   Lex->sql_command=SQLCOM_RENAME_TABLE;
+	}
+	table_to_table_list
+
+table_to_table_list:
+	table_to_table
+	| table_to_table_list ',' table_to_table
+
+table_to_table:
+	table_ident TO_SYM table_ident
+	{ if (add_table_to_list($1,NULL,TL_IGNORE) ||
+	      add_table_to_list($3,NULL,TL_IGNORE))
+	     YYABORT;
+ 	}
+
 /*
 ** Select : retrieve data from table
 */

sql/thr_malloc.cc

@@ -23,6 +23,7 @@ extern "C" {
   void sql_alloc_error_handler(void)
   {
     current_thd->fatal_error=1; /* purecov: inspected */
+    sql_print_error(ER(ER_OUT_OF_RESOURCES));
   }
 }
 
@@ -37,10 +38,6 @@ gptr sql_alloc(uint Size)
 {
   MEM_ROOT *root=my_pthread_getspecific_ptr(MEM_ROOT*,THR_MALLOC);
   char *ptr= (char*) alloc_root(root,Size);
-  if (!ptr)
-  {
-    sql_print_error(ER(ER_OUT_OF_RESOURCES));
-  }
   return ptr;
 }
 

sql/unireg.h

@@ -40,6 +40,7 @@
 
 #define ERRMAPP 1				/* Errormap f|r my_error */
 #define LIBLEN FN_REFLEN-FN_LEN			/* Max l{ngd p} dev */
+#define MAX_DBKEY_LENGTH (FN_LEN*2+2)
 #define MAX_FIELD_NAME 34			/* Max colum name length +2 */
 #define MAX_KEY 32				/* Max used keys */
 #define MAX_REF_PARTS 16			/* Max parts used as ref */

strings/ctype-sjis.c

@@ -224,7 +224,8 @@ int my_strnncoll_sjis(const uchar *s1, int len1, const uchar *s2, int len2)
 
 int my_strcoll_sjis(const uchar *s1, const uchar *s2)
 {
-  return (uint) my_strnncoll_sjis(s1,(uint) strlen(s1), s2,(uint) strlen(s2));
+  return (uint) my_strnncoll_sjis(s1,(uint) strlen((char*) s1),
+				  s2,(uint) strlen((char*) s2));
 }
 
 int my_strnxfrm_sjis(uchar *dest, uchar *src, int len, int srclen)
@@ -245,7 +246,7 @@ int my_strnxfrm_sjis(uchar *dest, uchar *src, int len, int srclen)
 
 int my_strxfrm_sjis(uchar *dest, uchar *src, int len)
 {
-  return my_strnxfrm_sjis(dest, src, len, (uint) strlen(src));
+  return my_strnxfrm_sjis(dest, src, len, (uint) strlen((char*) src));
 }