Merged some functions and removed some unused client functions.

Remember UNION for ALTER TABLE
Added test for if we are supporting transactions.
Don't allow REPLACE to replace a row when we have generated an auto_increment key
Fixed bug when using BLOB keys
Fixed bug in SET @variable=user.


Docs/manual.texi:
  Added some examples and moved the Error access denied section to the
  error section.
client/mysqltest.c:
  Changed to use the new mysql_send_query()
include/mysql.h:
  Changed mysql_reap_query() to mysql_send_query().
libmysql/libmysql.c:
  Changed mysql_reap_query() to mysql_send_query()
  Merged some functions and removed some unused functions.
mysql-test/r/bdb.result:
  New test case
mysql-test/r/distinct.result:
  New test case
mysql-test/r/key.result:
  New test case
mysql-test/r/merge.result:
  New test case
mysql-test/r/replace.result:
  New test case
mysql-test/t/bdb.test:
  New test case
mysql-test/t/key.test:
  New test case
mysql-test/t/merge.test:
  New test case
mysql-test/t/replace.test:
  New test case
mysys/my_lock.c:
  Moved global lock variable to static
sql-bench/test-insert.sh:
  Added test case for index-read only
sql/field.h:
  Fixed that one can optimize ORDER BY with ISAM and GEMINI
sql/ha_berkeley.cc:
  Added type casts needed for Windows
sql/ha_innobase.cc:
  Removed reference to manual from comment.
sql/ha_myisammrg.cc:
  Remember UNION for ALTER TABLE
sql/ha_myisammrg.h:
  Remember UNION for ALTER TABLE
sql/handler.cc:
  Added test for if we are supporting transactions.
  Don't allow REPLACE to replace a row when we have generated an auto_increment key.
sql/handler.h:
  Remember UNION for ALTER TABLE
sql/key.cc:
  Fixed bug when using BLOB keys
sql/mysql_priv.h:
  Added new variables
sql/mysqld.cc:
  Added new variables
sql/opt_range.cc:
  Fixed problem with BLOB keys
sql/opt_sum.cc:
  Fix for BLOB keys
sql/sql_class.cc:
  Added test if we need to init/clean transaction variables
sql/sql_insert.cc:
  Fix for REPLACE and auto_increment keys
sql/sql_parse.cc:
  Fixed bug in max_user_connections
sql/sql_select.cc:
  Fixed problem with key on BLOB
sql/sql_yacc.yy:
  Fixed bug in SET @variable=user.
sql/table.cc:
  Fixed problem with keys on BLOB

client/mysqltest.c

@@ -1412,13 +1412,13 @@ int run_query(MYSQL* mysql, struct st_query* q, int flags)
   else
     ds= &ds_res;
   
-  if((flags & QUERY_SEND) &&
-    (q_error = mysql_send_query(mysql, q->query)))
+  if ((flags & QUERY_SEND) &&
+      (q_error = mysql_send_query(mysql, q->query, strlen(q->query))))
     die("At line %u: unable to send query '%s'", start_lineno, q->query);
   if(!(flags & QUERY_REAP))
     return 0;
   
-  if (mysql_reap_query(mysql))
+  if (mysql_read_query_result(mysql))
   {
     if (q->require_file)
       abort_not_supported_test();

include/mysql.h

@@ -229,12 +229,11 @@ MYSQL *		STDCALL mysql_real_connect(MYSQL *mysql, const char *host,
 void		STDCALL mysql_close(MYSQL *sock);
 int		STDCALL mysql_select_db(MYSQL *mysql, const char *db);
 int		STDCALL mysql_query(MYSQL *mysql, const char *q);
-int		STDCALL mysql_send_query(MYSQL *mysql, const char *q);
-int		STDCALL mysql_reap_query(MYSQL *mysql);
+int		STDCALL mysql_send_query(MYSQL *mysql, const char *q,
+					 unsigned int length);
+int		STDCALL mysql_read_query_result(MYSQL *mysql);
 int		STDCALL mysql_real_query(MYSQL *mysql, const char *q,
 					unsigned int length);
-int		STDCALL mysql_real_send_query(MYSQL *mysql, const char *q,
-					unsigned int len);
 int		STDCALL mysql_create_db(MYSQL *mysql, const char *DB);
 int		STDCALL mysql_drop_db(MYSQL *mysql, const char *DB);
 int		STDCALL mysql_shutdown(MYSQL *mysql);

libmysql/libmysql.c

@@ -1700,35 +1700,30 @@ mysql_query(MYSQL *mysql, const char *query)
   return mysql_real_query(mysql,query, (uint) strlen(query));
 }
 
-int STDCALL
-mysql_send_query(MYSQL* mysql, const char* query)
-{
-  return mysql_real_send_query(mysql, query, strlen(query));
-}
-
-/* send the query and return so we can do something else */
-/* needs to be followed by mysql_reap_query() when we want to
-   finish processing it
+/*
+  Send the query and return so we can do something else.
+  Needs to be followed by mysql_read_query_result() when we want to
+  finish processing it.
 */  
+
 int STDCALL
-mysql_real_send_query(MYSQL* mysql, const char* query, uint len)
+mysql_send_query(MYSQL* mysql, const char* query, uint length)
 {
-  return simple_command(mysql, COM_QUERY, query, len, 1);
+  return simple_command(mysql, COM_QUERY, query, length, 1);
 }
 
-int STDCALL
-mysql_reap_query(MYSQL* mysql)
+int STDCALL mysql_read_query_result(MYSQL *mysql)
 {
   uchar *pos;
   ulong field_count;
   MYSQL_DATA *fields;
-  uint len;
-  DBUG_ENTER("mysql_reap_query");
-  DBUG_PRINT("enter",("handle: %lx",mysql));
-  if((len = net_safe_read(mysql)) == packet_error)
+  uint length;
+  DBUG_ENTER("mysql_read_query_result");
+
+  if ((length = net_safe_read(mysql)) == packet_error)
     DBUG_RETURN(-1);
   free_old_query(mysql);			/* Free old result */
- get_info:
+get_info:
   pos=(uchar*) mysql->net.read_pos;
   if ((field_count= net_field_length(&pos)) == 0)
   {
@@ -1738,14 +1733,14 @@ mysql_reap_query(MYSQL* mysql)
     {
       mysql->server_status=uint2korr(pos); pos+=2;
     }
-      if (pos < mysql->net.read_pos+len && net_field_length(&pos))
+    if (pos < mysql->net.read_pos+length && net_field_length(&pos))
       mysql->info=(char*) pos;
     DBUG_RETURN(0);
   }
   if (field_count == NULL_LENGTH)		/* LOAD DATA LOCAL INFILE */
   {
     int error=send_file_to_server(mysql,(char*) pos);
-      if ((len=net_safe_read(mysql)) == packet_error || error)
+    if ((length=net_safe_read(mysql)) == packet_error || error)
       DBUG_RETURN(-1);
     goto get_info;				/* Get info packet */
   }
@@ -1763,61 +1758,19 @@ mysql_reap_query(MYSQL* mysql)
   mysql->status=MYSQL_STATUS_GET_RESULT;
   mysql->field_count=field_count;
   DBUG_RETURN(0);
-
 }
 
 int STDCALL
 mysql_real_query(MYSQL *mysql, const char *query, uint length)
 {
-  uchar *pos;
-  ulong field_count;
-  MYSQL_DATA *fields;
   DBUG_ENTER("mysql_real_query");
   DBUG_PRINT("enter",("handle: %lx",mysql));
   DBUG_PRINT("query",("Query = \"%s\"",query));
-
-  if (simple_command(mysql,COM_QUERY,query,length,1) ||
-      (length=net_safe_read(mysql)) == packet_error)
-    DBUG_RETURN(-1);
-  free_old_query(mysql);			/* Free old result */
- get_info:
-  pos=(uchar*) mysql->net.read_pos;
-  if ((field_count= net_field_length(&pos)) == 0)
-  {
-    mysql->affected_rows= net_field_length_ll(&pos);
-    mysql->insert_id=	  net_field_length_ll(&pos);
-    if (mysql->server_capabilities & CLIENT_TRANSACTIONS)
-    {
-      mysql->server_status=uint2korr(pos); pos+=2;
-    }
-    if (pos < mysql->net.read_pos+length && net_field_length(&pos))
-      mysql->info=(char*) pos;
-    DBUG_RETURN(0);
-  }
-  if (field_count == NULL_LENGTH)		/* LOAD DATA LOCAL INFILE */
-  {
-    int error=send_file_to_server(mysql,(char*) pos);
-    if ((length=net_safe_read(mysql)) == packet_error || error)
-      DBUG_RETURN(-1);
-    goto get_info;				/* Get info packet */
-  }
-  if (!(mysql->server_status & SERVER_STATUS_AUTOCOMMIT))
-    mysql->server_status|= SERVER_STATUS_IN_TRANS;
-
-  mysql->extra_info= net_field_length_ll(&pos); /* Maybe number of rec */
-  if (!(fields=read_rows(mysql,(MYSQL_FIELD*) 0,5)))
+  if (simple_command(mysql,COM_QUERY,query,length,1))
     DBUG_RETURN(-1);
-  if (!(mysql->fields=unpack_fields(fields,&mysql->field_alloc,
-				    (uint) field_count,0,
-				    (my_bool) test(mysql->server_capabilities &
-						   CLIENT_LONG_FLAG))))
-    DBUG_RETURN(-1);
-  mysql->status=MYSQL_STATUS_GET_RESULT;
-  mysql->field_count=field_count;
-  DBUG_RETURN(0);
+  DBUG_RETURN(mysql_read_query_result(mysql));
 }
 
-
 static int
 send_file_to_server(MYSQL *mysql, const char *filename)
 {

mysql-test/r/bdb.result

@@ -483,3 +483,10 @@ i	j
 1	2
 build_path
 current
+a	b
+a	2
+a	b
+a	2
+a	b
+a	1
+a	2

mysql-test/r/distinct.result

@@ -120,14 +120,14 @@ UserId
 b
 1
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t3	index	a	a	4	NULL	6	Using index; Using temporary
+t3	index	a	a	5	NULL	6	Using index; Using temporary
 t2	index	a	a	4	NULL	5	Using index; Distinct
 t1	eq_ref	PRIMARY	PRIMARY	4	t2.a	1	where used; Distinct
 a
 1
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	PRIMARY	PRIMARY	4	NULL	2	Using index; Using temporary
-t3	ref	a	a	5	t1.a	12	Using index; Distinct
+t3	ref	a	a	5	t1.a	10	Using index; Distinct
 a
 1
 2

mysql-test/r/key.result

@@ -10,3 +10,10 @@ name_id	name
 name_id	name
 name_id	name
 2	[T,U]_axpby
+a	b
+a	2
+a	b
+a	2
+a	b
+a	1
+a	2

mysql-test/r/merge.result

@@ -103,9 +103,6 @@ test2
 test2
 c
 c
-test1
-test1
-test1
 incr	othr
 incr	othr
 1	10
@@ -118,4 +115,15 @@ count(*)
 20
 count(*)
 20
+Table	Create Table
+t3	CREATE TABLE `t3` (
+  `incr` int(11) NOT NULL default '0',
+  `othr` int(11) NOT NULL default '0',
+  PRIMARY KEY  (`incr`)
+) TYPE=MRG_MyISAM UNION=(t1,t2)
+Table	Create Table
+t3	CREATE TABLE `t3` (
+  `incr` int(11) NOT NULL default '0',
+  `othr` int(11) NOT NULL default '0'
+) TYPE=MRG_MyISAM UNION=(t1,t2)
 a

mysql-test/r/replace.result

+a	b
+126	first updated
+127	last

mysql-test/t/bdb.test

@@ -728,3 +728,18 @@ where
     t3.platform_id = 2;
 
 drop table t1, t2, t3, t4, t5, t6,t7;
+
+#
+# Test with blob + tinyint key
+#
+
+CREATE TABLE t1 (
+  a tinytext NOT NULL,
+  b tinyint(3) unsigned NOT NULL default '0',
+  PRIMARY KEY (a(32),b)
+) TYPE=BDB;
+INSERT INTO t1 VALUES ('a',1),('a',2);
+SELECT * FROM t1 WHERE a='a' AND b=2;
+SELECT * FROM t1 WHERE a='a' AND b in (2);
+SELECT * FROM t1 WHERE a='a' AND b in (1,2);
+drop table t1;

mysql-test/t/key.test

@@ -144,3 +144,19 @@ INSERT INTO t1 VALUES (1, 1, 1, 1, 'a');
 INSERT INTO t1 VALUES (1, 1, 1, 1, 'b'); 
 !$1062 INSERT INTO t1 VALUES (1, 1, 1, 1, 'a');
 drop table t1;
+
+#
+# Test with blob + tinyint key
+# (Failed for Greg Valure)
+#
+
+CREATE TABLE t1 (
+  a tinytext NOT NULL,
+  b tinyint(3) unsigned NOT NULL default '0',
+  PRIMARY KEY (a(32),b)
+) TYPE=MyISAM;
+INSERT INTO t1 VALUES ('a',1),('a',2);
+SELECT * FROM t1 WHERE a='a' AND b=2;
+SELECT * FROM t1 WHERE a='a' AND b in (2);
+SELECT * FROM t1 WHERE a='a' AND b in (1,2);
+drop table t1;

mysql-test/t/merge.test

@@ -50,7 +50,7 @@ insert into t2 (c) values ('test2');
 insert into t2 (c) values ('test2');
 select * from t3;
 select * from t3;
-delete from t3;
+delete from t3 where 1=1;
 select * from t3;
 select * from t1;
 drop table t3,t2,t1;
@@ -78,6 +78,16 @@ alter table t3 UNION=(t1,t2);
 select count(*) from t3;
 alter table t3 TYPE=MYISAM;
 select count(*) from t3;
+
+# Test that ALTER TABLE rembers the old UNION
+
+drop table t3;
+CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
+TYPE=MERGE UNION=(t1,t2);
+show create table t3;
+alter table t3 drop primary key;
+show create table t3;
+
 drop table t3,t2,t1;
 
 #

mysql-test/t/replace.test

@@ -20,3 +20,17 @@ replace into t1 (gesuchnr,benutzer_id) values (1,1);
 alter table t1 type=heap;
 replace into t1 (gesuchnr,benutzer_id) values (1,1);
 drop table t1;
+
+#
+# Test when using replace on a key that has used up it's whole range
+#
+
+create table t1 (a tinyint not null auto_increment primary key, b char(20));
+insert into t1 values (126,"first"),(0,"last");
+--error 1062
+insert into t1 values (0,"error");
+--error 1062
+replace into t1 values (0,"error");
+replace into t1 values (126,"first updated");
+select * from t1;
+drop table t1;

mysys/my_lock.c

@@ -31,12 +31,6 @@
 #define INCL_BASE
 #define INCL_NOPMAPI
 #include <os2emx.h>
-#endif
-
-#ifndef __EMX__
-#ifdef HAVE_FCNTL
-static struct flock lock;		/* Must be static for sun-sparc */
-#endif
 #endif
 
 	/* Lock a part of a file */
@@ -124,6 +118,8 @@ int my_lock(File fd, int locktype, my_off_t start, my_off_t length,
   }
 #else
 #if defined(HAVE_FCNTL)
+  {
+    struct flock lock;
     lock.l_type= (short) locktype;
     lock.l_whence=0L;
     lock.l_start=(long) start;
@@ -147,6 +143,7 @@ int my_lock(File fd, int locktype, my_off_t start, my_off_t length,
     }
     else if (fcntl(fd,F_SETLKW,&lock) != -1) /* Wait until a lock */
       DBUG_RETURN(0);
+  }
 #else
   if (MyFlags & MY_SEEK_NOT_DONE)
     VOID(my_seek(fd,start,MY_SEEK_SET,MYF(MyFlags & ~MY_SEEK_NOT_DONE)));

sql-bench/test-insert.sh

@@ -482,9 +482,12 @@ check_or_range("id3","select_range_key2");
 
 # Check reading on direct key on id and id3
 
-check_select_key("id","select_key_prefix");
-check_select_key2("id","id2","select_key");
-check_select_key("id3","select_key2");
+check_select_key("*","id","select_key_prefix");
+check_select_key2("*","id","id2","select_key");
+check_select_key2("id,id2","id","id2","select_key_return_key");
+check_select_key("*","id3","select_key2");
+check_select_key("id3","id3","select_key2_return_key");
+check_select_key("id1,id2","id3","select_key2_return_prim");
 
 ####
 #### A lot of simple selects on ranges

sql/field.h

@@ -45,7 +45,7 @@ class Field {
   uint8		null_bit;		// And position to it
   struct st_table *table;		// Pointer for table
   ulong query_id;			// For quick test of used fields
-  key_map key_start,part_of_key;	// Key is part of these keys.
+  key_map key_start,part_of_key,part_of_sortkey;// Field is part of these keys.
   const char *table_name,*field_name;
   utype unireg_check;
   uint32 field_length;			// Length of field

sql/ha_innobase.cc

@@ -736,7 +736,7 @@ ha_innobase::open(
 	stored the string length as the first byte. */
 
 	buff_len = table->reclength + table->max_key_length
-							+ MAX_REF_PARTS * 2;
+							+ MAX_REF_PARTS * 3;
 	if (!(mysql_byte*) my_multi_malloc(MYF(MY_WME),
 				     &upd_buff, buff_len,
 				     &key_val_buff, buff_len,
@@ -2594,10 +2594,10 @@ ha_innobase::update_table_comment(
     return (char*)comment;
 
   sprintf(str,
-    "%s; (See manual about Innobase stats); Innobase free: %lu kB",
+    "%s; Innobase free: %lu kB",
 	  comment, (ulong) innobase_get_free_space());
 
-  return((char*) str);
+  return(str);
 }
 
 

sql/ha_myisammrg.cc

@@ -221,6 +221,37 @@ THR_LOCK_DATA **ha_myisammrg::store_lock(THD *thd,
   return to;
 }
 
+void ha_myisammrg::update_create_info(HA_CREATE_INFO *create_info)
+{
+  DBUG_ENTER("ha_myisammrg::update_create_info");
+  if (!(create_info->used_fields & HA_CREATE_USED_UNION))
+  {
+    MYRG_TABLE *table;
+    THD *thd=current_thd;
+    create_info->merge_list.next= &create_info->merge_list.first;
+
+    for (table=file->open_tables ; table != file->end_table ; table++)
+    {
+      char *name=table->table->s->filename;
+      char buff[FN_REFLEN];
+      TABLE_LIST *ptr;
+      if (!(ptr = (TABLE_LIST *) thd->calloc(sizeof(TABLE_LIST))))
+	goto err;
+      fn_format(buff,name,"","",3);
+      if (!(ptr->real_name=thd->strdup(buff)))
+	goto err;
+      (*create_info->merge_list.next) = (byte*) ptr;
+      create_info->merge_list.next= (byte**) &ptr->next;
+    }
+    *create_info->merge_list.next=0;
+  }
+  DBUG_VOID_RETURN;
+
+err:
+  create_info->merge_list.elements=0;
+  create_info->merge_list.first=0;
+  DBUG_VOID_RETURN;
+}
 
 int ha_myisammrg::create(const char *name, register TABLE *form,
 			 HA_CREATE_INFO *create_info)

sql/ha_myisammrg.h

@@ -72,5 +72,6 @@ class ha_myisammrg: public handler
   int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info);
   THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
 			     enum thr_lock_type lock_type);
+  void update_create_info(HA_CREATE_INFO *create_info);
   void append_create_info(String *packet);
 };

sql/handler.cc

@@ -133,6 +133,8 @@ int ha_init()
     int error;
     if ((error=berkeley_init()))
       return error;
+    if (!berkeley_skip)				// If we couldn't use handler
+      opt_using_transactions=1;
   }
 #endif
 #ifdef HAVE_INNOBASE_DB
@@ -140,6 +142,8 @@ int ha_init()
   {
     if (innobase_init())
       return -1;
+    if (!innobase_skip)				// If we couldn't use handler
+      opt_using_transactions=1;
   }
 #endif
   return 0;
@@ -190,6 +194,8 @@ int ha_autocommit_or_rollback(THD *thd, int error)
 {
   DBUG_ENTER("ha_autocommit_or_rollback");
 #ifdef USING_TRANSACTIONS
+  if (opt_using_transactions)
+  {
     if (!error)
     {
       if (ha_commit_stmt(thd))
@@ -197,6 +203,7 @@ int ha_autocommit_or_rollback(THD *thd, int error)
     }
     else
       (void) ha_rollback_stmt(thd);
+  }
 #endif
   DBUG_RETURN(error);
 }
@@ -207,6 +214,8 @@ int ha_commit_trans(THD *thd, THD_TRANS* trans)
   int error=0;
   DBUG_ENTER("ha_commit");
 #ifdef USING_TRANSACTIONS
+  if (opt_using_transactions)
+  {
     /* Update the binary log if we have cached some queries */
     if (trans == &thd->transaction.all && mysql_bin_log.is_open() &&
 	my_b_tell(&thd->transaction.trans_log))
@@ -239,14 +248,19 @@ int ha_commit_trans(THD *thd, THD_TRANS* trans)
 #endif
     if (error && trans == &thd->transaction.all && mysql_bin_log.is_open())
       sql_print_error("Error: Got error during commit;  Binlog is not up to date!");
+  }
 #endif // using transactions
   DBUG_RETURN(error);
 }
 
+
 int ha_rollback_trans(THD *thd, THD_TRANS *trans)
 {
   int error=0;
   DBUG_ENTER("ha_rollback");
+#ifdef USING_TRANSACTIONS
+  if (opt_using_transactions)
+  {
 #ifdef HAVE_BERKELEY_DB
     if (trans->bdb_tid)
     {
@@ -268,12 +282,12 @@ int ha_rollback_trans(THD *thd, THD_TRANS *trans)
       }
     }
 #endif
-#ifdef USING_TRANSACTIONS
     if (trans == &thd->transaction.all)
       reinit_io_cache(&thd->transaction.trans_log,
 		      WRITE_CACHE, (my_off_t) 0, 0, 1);
     thd->transaction.trans_log.end_of_file= max_binlog_cache_size;
-#endif
+  }
+#endif /* USING_TRANSACTIONS */
   DBUG_RETURN(error);
 }
 
@@ -493,7 +507,10 @@ void handler::update_auto_increment()
   THD *thd;
   DBUG_ENTER("update_auto_increment");
   if (table->next_number_field->val_int() != 0)
+  {
+    auto_increment_column_changed=0;
     DBUG_VOID_RETURN;
+  }
   thd=current_thd;
   if ((nr=thd->next_insert_id))
     thd->next_insert_id=0;			// Clear after use
@@ -501,6 +518,7 @@ void handler::update_auto_increment()
     nr=get_auto_increment();
   thd->insert_id((ulonglong) nr);
   table->next_number_field->store(nr);
+  auto_increment_column_changed=1;
   DBUG_VOID_RETURN;
 }
 

sql/handler.h

@@ -117,6 +117,7 @@ enum row_type { ROW_TYPE_DEFAULT, ROW_TYPE_FIXED, ROW_TYPE_DYNAMIC,
 /* Bits in used_fields */
 #define HA_CREATE_USED_AUTO	1
 #define HA_CREATE_USED_RAID	2
+#define HA_CREATE_USED_UNION	4
 
 typedef struct st_thd_trans {
   void *bdb_tid;
@@ -191,6 +192,7 @@ class handler :public Sql_alloc
   time_t update_time;
   ulong mean_rec_length;		/* physical reclength */
   void  *ft_handler;
+  bool  auto_increment_column_changed;
 
   handler(TABLE *table_arg) : table(table_arg),active_index(MAX_REF_PARTS),
     ref(0),ref_length(sizeof(my_off_t)), block_size(0),records(0),deleted(0),

sql/key.cc

@@ -76,7 +76,7 @@ void key_copy(byte *key,TABLE *table,uint idx,uint key_length)
   KEY_PART_INFO *key_part;
 
   if (key_length == 0)
-    key_length=key_info->key_length+key_info->extra_length;
+    key_length=key_info->key_length;
   for (key_part=key_info->key_part;
        (int) key_length > 0 ;
        key_part++)
@@ -122,7 +122,7 @@ void key_restore(TABLE *table,byte *key,uint idx,uint key_length)
   {
     if (idx == (uint) -1)
       return;
-    key_length=key_info->key_length+key_info->extra_length;
+    key_length=key_info->key_length;
   }
   for (key_part=key_info->key_part;
        (int) key_length > 0 ;

sql/mysql_priv.h

@@ -506,14 +506,14 @@ extern pthread_mutex_t LOCK_mysql_create_db,LOCK_Acl,LOCK_open,
 extern pthread_cond_t COND_refresh,COND_thread_count, COND_binlog_update,
                       COND_slave_stopped, COND_slave_start;
 extern pthread_attr_t connection_attrib;
-extern bool opt_endinfo,using_udf_functions, locked_in_memory;
+extern bool opt_endinfo, using_udf_functions, locked_in_memory,
+            opt_using_transactions, use_temp_pool;
+extern char f_fyllchar;
 extern ulong ha_read_count, ha_write_count, ha_delete_count, ha_update_count,
 	     ha_read_key_count, ha_read_next_count, ha_read_prev_count,
 	     ha_read_first_count, ha_read_last_count,
   	     ha_read_rnd_count, ha_read_rnd_next_count;
 extern MY_BITMAP temp_pool;
-extern bool use_temp_pool;
-extern char f_fyllchar;
 extern uchar *days_in_month;
 extern DATE_FORMAT dayord;
 extern double log_10[32];

sql/mysqld.cc

@@ -249,6 +249,7 @@ ulong max_tmp_tables,max_heap_table_size;
 ulong bytes_sent = 0L, bytes_received = 0L;
 
 bool opt_endinfo,using_udf_functions,low_priority_updates, locked_in_memory;
+bool opt_using_transactions;
 bool volatile abort_loop,select_thread_in_use,grant_option;
 bool volatile ready_to_exit,shutdown_in_progress;
 ulong refresh_version=1L,flush_version=1L;	/* Increments on each reload */

sql/opt_range.cc

@@ -2500,14 +2500,16 @@ print_key(KEY_PART *key_part,const char *key,uint used_length)
       fputc('/',DBUG_FILE);
     if (field->real_maybe_null())
     {
-      length++;
+      length++;				// null byte is not in part_length 
       if (*key++)
       {
 	fwrite("NULL",sizeof(char),4,DBUG_FILE);
 	continue;
       }
     }
-    field->set_key_image((char*) key,key_part->part_length);
+    field->set_key_image((char*) key,key_part->part_length -
+			 ((field->type() == FIELD_TYPE_BLOB) ?
+			  HA_KEY_BLOB_LENGTH : 0));
     field->val_str(&tmp,&tmp);
     fwrite(tmp.ptr(),sizeof(char),tmp.length(),DBUG_FILE);
   }

sql/opt_sum.cc

@@ -331,16 +331,15 @@ static bool find_range_key(TABLE_REF *ref, Field* field, COND *cond)
 	   part != part_end ;
 	   part++)
       {
-	if (!part_of_cond(cond,part->field))
+	if (!part_of_cond(cond,part->field) ||
+	    left_length < part->store_length)
 	  break;
 	// Save found constant
 	if (part->null_bit)
 	  *key_ptr++= (byte) test(part->field->is_null());
-	if (left_length - part->length < 0)
-	  break;				// Can't use this key
-	part->field->get_image((char*) key_ptr,part->length);
-	key_ptr+=part->length;
-	left_length-=part->length;
+	part->field->get_key_image((char*) key_ptr,part->length);
+	key_ptr+=part->store_length - test(part->null_bit);
+	left_length-=part->store_length;
       }
       if (part == part_end && part->field == field)
       {

sql/sql_class.cc

@@ -91,7 +91,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
   tmp_table=0;
   lock=locked_tables=0;
   used_tables=0;
-  cuted_fields=0L;
+  cuted_fields=sent_row_count=0L;
   options=thd_startup_options;
   update_lock_default= low_priority_updates ? TL_WRITE_LOW_PRIORITY : TL_WRITE;
   start_time=(time_t) 0;
@@ -118,12 +118,15 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
   system_thread=0;
   bzero((char*) &mem_root,sizeof(mem_root));
 #ifdef USING_TRANSACTIONS
+  if (opt_using_transactions)
+  {
     bzero((char*) &transaction,sizeof(transaction));
     if (open_cached_file(&transaction.trans_log,
 			 mysql_tmpdir, LOG_PREFIX, binlog_cache_size,
 			 MYF(MY_WME)))
       killed=1;
     transaction.trans_log.end_of_file= max_binlog_cache_size;
+  }
 #endif
 
 #ifdef	__WIN__
@@ -148,8 +151,11 @@ THD::~THD()
   }
   close_temporary_tables(this);
 #ifdef USING_TRANSACTIONS
+  if (opt_using_transactions)
+  {
     close_cached_file(&transaction.trans_log);
     ha_close_connection(this);
+  }
 #endif
   if (global_read_lock)
   {

sql/sql_insert.cc

@@ -346,6 +346,14 @@ int write_record(TABLE *table,COPY_INFO *info)
 	error=HA_WRITE_SKIPP;			/* Database can't find key */
 	goto err;
       }
+      /*
+	Don't allow REPLACE to replace a row when a auto_increment column
+	was used.  This ensures that we don't get a problem when the
+	whole range of the key has been used.
+      */
+      if (table->next_number_field && key_nr == table->next_number_index &&
+	  table->file->auto_increment_column_changed)
+	goto err;
       if (table->file->option_flag() & HA_DUPP_POS)
       {
 	if (table->file->rnd_pos(table->record[1],table->file->dupp_ref))

sql/sql_parse.cc

@@ -156,7 +156,7 @@ static bool check_user(THD *thd,enum_server_command command, const char *user,
   {
     bool error=test(mysql_change_db(thd,db));
     if (error)
-      decrease_user_connections(user,thd->host);
+      decrease_user_connections(thd->user,thd->host);
     return error;
   }
   else
@@ -175,8 +175,8 @@ static DYNAMIC_ARRAY  user_conn_array;
 extern  pthread_mutex_t LOCK_user_conn;
 
 struct  user_conn {
-  char user[USERNAME_LENGTH+HOSTNAME_LENGTH+2];
-  int connections, len;
+  char *user;
+  uint len, connections;
 };
 
 static byte* get_key_conn(user_conn *buff, uint *length,
@@ -188,18 +188,23 @@ static byte* get_key_conn(user_conn *buff, uint *length,
 
 #define DEF_USER_COUNT 50
 
+static void free_user(struct user_conn *uc)
+{
+  my_free((char*) uc,MYF(0));
+}
+
 void init_max_user_conn(void) 
 {
   (void) hash_init(&hash_user_connections,DEF_USER_COUNT,0,0,
-		   (hash_get_key) get_key_conn,0, 0);
-  (void) init_dynamic_array(&user_conn_array,sizeof(user_conn),
-			    DEF_USER_COUNT, DEF_USER_COUNT);
+		   (hash_get_key) get_key_conn, (void (*)(void*)) free_user,
+		   0);
 }
 
 
 static int check_for_max_user_connections(const char *user, int u_length,
 					  const char *host) 
 {
+  int error=1;
   uint temp_len;
   char temp_user[USERNAME_LENGTH+HOSTNAME_LENGTH+2];
   struct  user_conn *uc;
@@ -207,6 +212,9 @@ static int check_for_max_user_connections(const char *user, int u_length,
     user="";
   if (!host)
     host="";
+  DBUG_ENTER("check_for_max_user_connections");
+  DBUG_PRINT("enter",("user: '%s'  host: '%s'", user, host));
+
   temp_len= (uint) (strxnmov(temp_user, sizeof(temp_user), user, "@", host,
 			     NullS) - temp_user);
   (void) pthread_mutex_lock(&LOCK_user_conn);
@@ -214,30 +222,40 @@ static int check_for_max_user_connections(const char *user, int u_length,
 					 (byte*) temp_user, temp_len);
   if (uc) /* user found ; check for no. of connections */
   {
-    if ((uint) max_user_connections ==  uc->connections) 
+    if (max_user_connections ==  (uint) uc->connections) 
     {
       net_printf(&(current_thd->net),ER_TOO_MANY_USER_CONNECTIONS, temp_user);
-      pthread_mutex_unlock(&LOCK_user_conn);
-      return 1;
+      goto end;
     }
     uc->connections++; 
   }
   else
   {
     /* the user is not found in the cache; Insert it */
-    struct user_conn uc;
-    memcpy(uc.user,temp_user,temp_len+1);
-    uc.len = temp_len;
-    uc.connections = 1;
-    if (!insert_dynamic(&user_conn_array, (char *) &uc))
+    struct user_conn *uc= ((struct user_conn*)
+			   my_malloc(sizeof(struct user_conn) + temp_len+1,
+				     MYF(MY_WME)));
+    if (!uc)
+    {
+      send_error(&current_thd->net, 0, NullS);	// Out of memory
+      goto end;
+    }      
+    uc->user=(char*) (uc+1);
+    memcpy(uc->user,temp_user,temp_len+1);
+    uc->len = temp_len;
+    uc->connections = 1;
+    if (hash_insert(&hash_user_connections, (byte*) uc))
     {
-      hash_insert(&hash_user_connections,
-		  (byte *) dynamic_array_ptr(&user_conn_array,
-					     user_conn_array.elements - 1));
+      my_free((char*) uc,0);
+      send_error(&current_thd->net, 0, NullS);	// Out of memory
+      goto end;
     }
   }
+  error=0;
+
+end:
   (void) pthread_mutex_unlock(&LOCK_user_conn);
-  return 0;
+  DBUG_RETURN(error);
 }
 
 
@@ -246,10 +264,15 @@ static void decrease_user_connections(const char *user, const char *host)
   char temp_user[USERNAME_LENGTH+HOSTNAME_LENGTH+2];
   int temp_len;
   struct user_conn uucc, *uc;
+  if (!max_user_connections)
+    return;
   if (!user)
     user="";
   if (!host)
     host="";
+  DBUG_ENTER("decrease_user_connections");
+  DBUG_PRINT("enter",("user: '%s'  host: '%s'", user, host));
+
   temp_len= (uint) (strxnmov(temp_user, sizeof(temp_user), user, "@", host,
 			     NullS) - temp_user);
   (void) pthread_mutex_lock(&LOCK_user_conn);
@@ -263,17 +286,15 @@ static void decrease_user_connections(const char *user, const char *host)
   {
     /* Last connection for user; Delete it */
     (void) hash_delete(&hash_user_connections,(char *) uc);
-    uint element= ((uint) ((byte*) uc - (byte*) user_conn_array.buffer) /
-		   user_conn_array.size_of_element);
-    delete_dynamic_element(&user_conn_array,element);
   }
 end:
   (void) pthread_mutex_unlock(&LOCK_user_conn);
+  DBUG_VOID_RETURN;
 }
 
+
 void free_max_user_conn(void)
 {
-  delete_dynamic(&user_conn_array);
   hash_free(&hash_user_connections);
 }
 
@@ -336,20 +357,20 @@ check_connections(THD *thd)
   {
     /* buff[] needs to big enough to hold the server_version variable */
     char buff[SERVER_VERSION_LENGTH + SCRAMBLE_LENGTH+32],*end;
-    int client_flags = CLIENT_LONG_FLAG | CLIENT_CONNECT_WITH_DB |
-	               CLIENT_TRANSACTIONS;
-    LINT_INIT(pkt_len);
+    int client_flags = CLIENT_LONG_FLAG | CLIENT_CONNECT_WITH_DB;
+    if (opt_using_transactions)
+      client_flags|=CLIENT_TRANSACTIONS;
+#ifdef HAVE_COMPRESS
+    client_flags |= CLIENT_COMPRESS;
+#endif /* HAVE_COMPRESS */
 
     end=strmov(buff,server_version)+1;
     int4store((uchar*) end,thd->thread_id);
     end+=4;
     memcpy(end,thd->scramble,SCRAMBLE_LENGTH+1);
     end+=SCRAMBLE_LENGTH +1;
-#ifdef HAVE_COMPRESS
-    client_flags |= CLIENT_COMPRESS;
-#endif /* HAVE_COMPRESS */
 #ifdef HAVE_OPENSSL
-    if (ssl_acceptor_fd!=0)
+    if (ssl_acceptor_fd)
       client_flags |= CLIENT_SSL;       /* Wow, SSL is avalaible! */
     /*
      * Without SSL the handshake consists of one packet. This packet
@@ -542,7 +563,6 @@ pthread_handler_decl(handle_one_connection,arg)
       thread_safe_increment(aborted_threads,&LOCK_thread_count);
     }
 
-    if (max_user_connections)
     decrease_user_connections(thd->user,thd->host);
 end_thread:
     close_connection(net);
@@ -567,17 +587,18 @@ pthread_handler_decl(handle_bootstrap,arg)
   THD *thd=(THD*) arg;
   FILE *file=bootstrap_file;
   char *buff;
-  DBUG_ENTER("handle_bootstrap");
-
-  pthread_detach_this_thread();
-  thd->thread_stack= (char*) &thd;
 
+  /* The following must be called before DBUG_ENTER */
   if (my_thread_init() || thd->store_globals())
   {
     close_connection(&thd->net,ER_OUT_OF_RESOURCES);
     thd->fatal_error=1;
     goto end;
   }
+  DBUG_ENTER("handle_bootstrap");
+
+  pthread_detach_this_thread();
+  thd->thread_stack= (char*) &thd;
   thd->mysys_var=my_thread_var;
   thd->dbug_thread_id=my_thread_id();
 #ifndef __WIN__
@@ -2800,4 +2821,3 @@ static void refresh_status(void)
   pthread_mutex_unlock(&LOCK_status);
   pthread_mutex_unlock(&THR_LOCK_keycache);
 }
-

sql/sql_select.cc

@@ -2037,8 +2037,7 @@ get_best_combination(JOIN *join)
             if (keyparts == keyuse->keypart)
             {
               keyparts++;
-              length+=keyinfo->key_part[keyuse->keypart].length +
-                test(keyinfo->key_part[keyuse->keypart].null_bit);
+              length+=keyinfo->key_part[keyuse->keypart].store_length;
             }
           }
           keyuse++;
@@ -2238,8 +2237,11 @@ make_join_select(JOIN *join,SQL_SELECT *select,COND *cond)
 	make_cond_for_table(cond,join->const_table_map,(table_map) 0);
       DBUG_EXECUTE("where",print_where(const_cond,"constants"););
       if (const_cond && !const_cond->val_int())
+      {
+	DBUG_PRINT("info",("Found impossible WHERE condition"));
 	DBUG_RETURN(1);				// Impossible const condition
       }
+    }
     used_tables=(select->const_tables=join->const_table_map) | RAND_TABLE_BIT;
     for (uint i=join->const_tables ; i < join->tables ; i++)
     {
@@ -5131,7 +5133,7 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit)
       usable_keys=0;
       break;
     }
-    usable_keys&=((Item_field*) (*tmp_order->item))->field->part_of_key;
+    usable_keys&=((Item_field*) (*tmp_order->item))->field->part_of_sortkey;
   }
 
   ref_key= -1;

sql/sql_yacc.yy

@@ -740,6 +740,7 @@ create_table_option:
 	    lex->table_list.elements=1;
 	    lex->table_list.next= (byte**) &(table_list->next);
 	    table_list->next=0;
+	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
 	  }
 
 table_types:
@@ -2666,7 +2667,10 @@ option_value:
 	  {
 	     Item_func_set_user_var *item = new Item_func_set_user_var($2,$4);
 	     if (item->fix_fields(current_thd,0) || item->update())
+	     { 
 		send_error(&current_thd->net, ER_SET_CONSTANTS_ONLY);
+	        YYABORT;
+	     }
 	   }
          | SQL_SLAVE_SKIP_COUNTER equal ULONG_NUM
           {

sql/table.cc

@@ -153,7 +153,6 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
 
   for (i=0 ; i < keys ; i++, keyinfo++)
   {
-    uint null_parts=0;
     keyinfo->flags=	 ((uint) strpos[0]) ^ HA_NOSAME;
     keyinfo->key_length= (uint) uint2korr(strpos+1);
     keyinfo->key_parts=  (uint) strpos[3];  strpos+=4;
@@ -185,7 +184,6 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
       }
       key_part->store_length=key_part->length;
     }
-    keyinfo->key_length+=null_parts;
     set_if_bigger(outparam->max_key_length,keyinfo->key_length+
 		  keyinfo->key_parts);
     if (keyinfo->flags & HA_NOSAME)
@@ -420,6 +418,7 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
 	    key_part->store_length+=HA_KEY_NULL_LENGTH;
 	    keyinfo->flags|=HA_NULL_PART_KEY;
 	    keyinfo->extra_length+= HA_KEY_NULL_LENGTH;
+	    keyinfo->key_length+= HA_KEY_NULL_LENGTH;
 	  }
 	  if (field->type() == FIELD_TYPE_BLOB ||
 	      field->real_type() == FIELD_TYPE_VAR_STRING)
@@ -428,6 +427,7 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
 	      key_part->key_part_flag|= HA_BLOB_PART;
 	    keyinfo->extra_length+=HA_KEY_BLOB_LENGTH;
 	    key_part->store_length+=HA_KEY_BLOB_LENGTH;
+	    keyinfo->key_length+= HA_KEY_BLOB_LENGTH;
 	  }
 	  if (i == 0 && key != primary_key)
 	    field->flags |=
@@ -438,11 +438,16 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
 	    field->key_start|= ((key_map) 1 << key);
 	  if ((ha_option & HA_HAVE_KEY_READ_ONLY) &&
 	      field->key_length() == key_part->length &&
-	      field->type() != FIELD_TYPE_BLOB &&
-	      (field->key_type() != HA_KEYTYPE_TEXT ||
+	      field->type() != FIELD_TYPE_BLOB)
+	  {
+	    if (field->key_type() != HA_KEYTYPE_TEXT ||
 		(!(ha_option & HA_KEY_READ_WRONG_STR) &&
-		!(keyinfo->flags & HA_FULLTEXT))))
+		 !(keyinfo->flags & HA_FULLTEXT)))
 	      field->part_of_key|= ((key_map) 1 << key);
+	    if (field->key_type() != HA_KEYTYPE_TEXT ||
+		!(keyinfo->flags & HA_FULLTEXT))
+	      field->part_of_sortkey|= ((key_map) 1 << key);
+	  }
 	  if (!(key_part->key_part_flag & HA_REVERSE_SORT) &&
 	      usable_parts == i)
 	    usable_parts++;			// For FILESORT