Merge

include/mysqld_error.h

@@ -319,4 +319,5 @@
 #define ER_INVALID_CHARACTER_STRING 1300
 #define ER_WARN_ALLOWED_PACKET_OVERFLOWED 1301
 #define ER_CONFLICTING_DECLARATIONS 1302
-#define ER_ERROR_MESSAGES 303
+#define ER_NO_CONS_READ_ENGINE 1303
+#define ER_ERROR_MESSAGES 304

mysql-test/r/consistent_snapshot.result

+drop table if exists t1;
+create table t1 (a int) engine=innodb;
+start transaction with consistent snapshot;
+insert into t1 values(1);
+select * from t1;
+a
+commit;
+delete from t1;
+start transaction;
+insert into t1 values(1);
+select * from t1;
+a
+1
+commit;
+drop table t1;

mysql-test/r/rpl_rewrite_db.result

+stop slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+reset master;
+reset slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+start slave;
+drop database if exists mysqltest1;
+create database mysqltest1;
+use mysqltest1;
+create table t1 (a int);
+insert into t1 values(9);
+select * from mysqltest1.t1;
+a
+9
+show databases like 'mysqltest1';
+Database (mysqltest1)
+mysqltest1
+select * from test.t1;
+a
+9
+drop table t1;
+drop database mysqltest1;

mysql-test/t/consistent_snapshot.test

+-- source include/have_innodb.inc
+
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+connect (con1,localhost,root,,);
+connect (con2,localhost,root,,);
+
+### Test 1:
+### - While a consistent snapshot transaction is executed,
+###   no external inserts should be visible to the transaction.
+
+connection con1;
+create table t1 (a int) engine=innodb;
+start transaction with consistent snapshot;
+
+connection con2;
+insert into t1 values(1);
+
+connection con1;
+select * from t1; # if consistent snapshot was set as expected, we
+# should see nothing.
+commit;
+
+### Test 2:
+### - For any non-consistent snapshot transaction, external
+###   committed inserts should be visible to the transaction.
+
+delete from t1;
+start transaction; # Now we omit WITH CONSISTENT SNAPSHOT
+
+connection con2;
+insert into t1 values(1);
+
+connection con1;
+select * from t1; # if consistent snapshot was not set, as expected, we
+# should see 1.
+commit;
+
+drop table t1;

mysql-test/t/rpl_rewrite_db-slave.opt

+"--replicate-rewrite-db=mysqltest1->test"

mysql-test/t/rpl_rewrite_db.test

+source include/master-slave.inc;
+--disable_warnings
+drop database if exists mysqltest1;
+--enable_warnings
+create database mysqltest1;
+
+use mysqltest1;
+create table t1 (a int);
+insert into t1 values(9);
+select * from mysqltest1.t1;
+sync_slave_with_master;
+show databases like 'mysqltest1'; # should be empty
+select * from test.t1;
+# cleanup
+connection master;
+drop table t1;
+drop database mysqltest1;
+sync_slave_with_master;
+

sql/handler.cc

@@ -583,6 +583,12 @@ int ha_rollback_trans(THD *thd, THD_TRANS *trans)
   if (opt_using_transactions)
   {
     bool operation_done=0;
+    /*
+      As rollback can be 30 times slower than insert in InnoDB, and user may
+      not know there's rollback (if it's because of a dupl row), better warn.
+    */
+    const char *save_proc_info= thd->proc_info;
+    thd->proc_info= "Rolling back";
 #ifdef HAVE_NDBCLUSTER_DB
     if (trans->ndb_tid)
     {
@@ -654,6 +660,7 @@ int ha_rollback_trans(THD *thd, THD_TRANS *trans)
     thd->variables.tx_isolation=thd->session_tx_isolation;
     if (operation_done)
       statistic_increment(ha_rollback_count,&LOCK_status);
+    thd->proc_info= save_proc_info;
   }
 #endif /* USING_TRANSACTIONS */
   DBUG_RETURN(error);
@@ -766,6 +773,24 @@ int ha_savepoint(THD *thd, char *savepoint_name)
   DBUG_RETURN(error);
 }
 
+
+int ha_start_consistent_snapshot(THD *thd)
+{
+#ifdef HAVE_INNOBASE_DB
+  if ((have_innodb == SHOW_OPTION_YES) &&
+      !innobase_start_trx_and_assign_read_view(thd))
+    return 0;
+#endif
+  /*
+    Same idea as when one wants to CREATE TABLE in one engine which does not
+    exist:
+  */
+  push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+               ER_NO_CONS_READ_ENGINE, ER(ER_NO_CONS_READ_ENGINE));
+  return 0;
+}
+
+
 bool ha_flush_logs()
 {
   bool result=0;

sql/handler.h

@@ -138,6 +138,8 @@
 #define HA_CACHE_TBL_ASKTRANSACT 2
 #define HA_CACHE_TBL_TRANSACT    4
 
+/* Options of START TRANSACTION statement (and later of SET TRANSACTION stmt) */
+#define MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT 1
 
 enum db_type 
 { 
@@ -568,4 +570,4 @@ int ha_find_files(THD *thd,const char *db,const char *path,
 		  const char *wild, bool dir,List<char>* files);
 int ha_table_exists(THD* thd, const char* db, const char* name);
 TYPELIB *ha_known_exts(void);
-
+int ha_start_consistent_snapshot(THD *thd);

sql/lex.h

@@ -114,6 +114,7 @@ static SYMBOL symbols[] = {
   { "COMMITTED",	SYM(COMMITTED_SYM)},
   { "COMPRESSED",	SYM(COMPRESSED_SYM)},
   { "CONCURRENT",	SYM(CONCURRENT)},
+  { "CONSISTENT",	SYM(CONSISTENT_SYM)},
   { "CONSTRAINT",	SYM(CONSTRAINT)},
   { "CONVERT",		SYM(CONVERT_SYM)},
   { "CREATE",		SYM(CREATE)},
@@ -382,6 +383,7 @@ static SYMBOL symbols[] = {
   { "SIGNED",		SYM(SIGNED_SYM)},
   { "SIMPLE",		SYM(SIMPLE_SYM)},
   { "SLAVE",            SYM(SLAVE)},
+  { "SNAPSHOT",         SYM(SNAPSHOT_SYM)},
   { "SMALLINT",		SYM(SMALLINT)},
   { "SOME",             SYM(ANY_SYM)},
   { "SONAME",		SYM(UDF_SONAME_SYM)},

sql/log_event.cc

@@ -977,7 +977,8 @@ void Query_log_event::print(FILE* file, bool short_form, char* last_db)
 int Query_log_event::exec_event(struct st_relay_log_info* rli)
 {
   int expected_error,actual_error= 0;
-  thd->db= (char*) rewrite_db(db); // thd->db_length is set later if needed
+  thd->db_length= db_len;
+  thd->db= (char*) rewrite_db(db, &thd->db_length);
 
   /*
     InnoDB internally stores the master log position it has processed so far;
@@ -995,11 +996,6 @@ int Query_log_event::exec_event(struct st_relay_log_info* rli)
   if (db_ok(thd->db, replicate_do_db, replicate_ignore_db))
   {
     thd->set_time((time_t)when);
-    /*
-      We cannot use db_len from event to fill thd->db_length, because
-      rewrite_db() may have changed db.
-    */ 
-    thd->db_length= thd->db ? strlen(thd->db) : 0;
     thd->query_length= q_len;
     thd->query = (char*)query;
     VOID(pthread_mutex_lock(&LOCK_thread_count));
@@ -1057,7 +1053,7 @@ Default database: '%s'. Query: '%s'",
 			expected_error,
 			actual_error ? thd->net.last_error: "no error",
 			actual_error,
-			print_slave_db_safe(db), query);
+			print_slave_db_safe(thd->db), query);
       thd->query_error= 1;
     }
     /*
@@ -1078,7 +1074,7 @@ Default database: '%s'. Query: '%s'",
 			"Error '%s' on query. Default database: '%s'. Query: '%s'",
 			(actual_error ? thd->net.last_error :
 			 "unexpected success or fatal error"),
-			print_slave_db_safe(db), query);
+			print_slave_db_safe(thd->db), query);
       thd->query_error= 1;
     }
   } /* End of if (db_ok(... */
@@ -1706,7 +1702,8 @@ int Load_log_event::exec_event(NET* net, struct st_relay_log_info* rli,
 			       bool use_rli_only_for_errors)
 {
   char *load_data_query= 0;
-  thd->db= (char*) rewrite_db(db); // thd->db_length is set later if needed
+  thd->db_length= db_len;
+  thd->db= (char*) rewrite_db(db, &thd->db_length);
   DBUG_ASSERT(thd->query == 0);
   thd->query_length= 0;                         // Should not be needed
   thd->query_error= 0;
@@ -1741,7 +1738,6 @@ int Load_log_event::exec_event(NET* net, struct st_relay_log_info* rli,
   if (db_ok(thd->db, replicate_do_db, replicate_ignore_db))
   {
     thd->set_time((time_t)when);
-    thd->db_length= thd->db ? strlen(thd->db) : 0;
     VOID(pthread_mutex_lock(&LOCK_thread_count));
     thd->query_id = query_id++;
     VOID(pthread_mutex_unlock(&LOCK_thread_count));
@@ -1847,7 +1843,7 @@ Slave: load data infile on table '%s' at log position %s in log \
                         (char*) table_name,
                         llstr(log_pos,llbuff), RPL_LOG_NAME, 
 			(ulong) thd->cuted_fields,
-                        print_slave_db_safe(db));
+                        print_slave_db_safe(thd->db));
       }
       if (net)
         net->pkt_nr= thd->net.pkt_nr;
@@ -1865,6 +1861,7 @@ Slave: load data infile on table '%s' at log position %s in log \
   }
 	    
   thd->net.vio = 0; 
+  char *save_db= thd->db;
   VOID(pthread_mutex_lock(&LOCK_thread_count));
   thd->db= 0;
   thd->query= 0;
@@ -1887,7 +1884,7 @@ Slave: load data infile on table '%s' at log position %s in log \
     }
     slave_print_error(rli,sql_errno,"\
 Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'",
-		      err, (char*)table_name, print_slave_db_safe(db));
+		      err, (char*)table_name, print_slave_db_safe(save_db));
     free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
     return 1;
   }
@@ -1897,7 +1894,7 @@ Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'",
   {
     slave_print_error(rli,ER_UNKNOWN_ERROR, "\
 Fatal error running LOAD DATA INFILE on table '%s'. Default database: '%s'",
-		      (char*)table_name, print_slave_db_safe(db));
+		      (char*)table_name, print_slave_db_safe(save_db));
     return 1;
   }
 

sql/share/czech/errmsg.txt

@@ -331,3 +331,4 @@ character-set=latin2
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/danish/errmsg.txt

@@ -322,3 +322,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/dutch/errmsg.txt

@@ -331,3 +331,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/english/errmsg.txt

@@ -319,3 +319,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/estonian/errmsg.txt

@@ -324,3 +324,4 @@ character-set=latin7
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/french/errmsg.txt

@@ -319,3 +319,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/german/errmsg.txt

@@ -332,3 +332,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/greek/errmsg.txt

@@ -319,3 +319,4 @@ character-set=greek
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/hungarian/errmsg.txt

@@ -324,3 +324,4 @@ character-set=latin2
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/italian/errmsg.txt

@@ -319,3 +319,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/japanese/errmsg.txt

@@ -323,3 +323,4 @@ character-set=ujis
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/korean/errmsg.txt

@@ -319,3 +319,4 @@ character-set=euckr
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/norwegian-ny/errmsg.txt

@@ -321,3 +321,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/norwegian/errmsg.txt

@@ -321,3 +321,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/polish/errmsg.txt

@@ -324,3 +324,4 @@ character-set=latin2
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/portuguese/errmsg.txt

@@ -321,3 +321,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/romanian/errmsg.txt

@@ -324,3 +324,4 @@ character-set=latin2
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/russian/errmsg.txt

@@ -324,3 +324,4 @@ character-set=koi8r
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/serbian/errmsg.txt

@@ -312,3 +312,4 @@ character-set=cp1250
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/slovak/errmsg.txt

@@ -327,3 +327,4 @@ character-set=latin2
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/spanish/errmsg.txt

@@ -323,3 +323,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/swedish/errmsg.txt

@@ -319,3 +319,4 @@ character-set=latin1
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/share/ukrainian/errmsg.txt

@@ -325,3 +325,4 @@ character-set=koi8u
 "Invalid %s character string: '%.64s'",
 "Result of %s() was larger than max_allowed_packet (%ld) - truncated"
 "Conflicting declarations: '%s%s' and '%s%s'"
+"This MySQL server does not support any consistent-read capable storage engine"

sql/slave.cc

@@ -1032,7 +1032,7 @@ bool net_request_file(NET* net, const char* fname)
 }
 
 
-const char *rewrite_db(const char* db)
+const char *rewrite_db(const char* db, uint *new_len)
 {
   if (replicate_rewrite_db.is_empty() || !db)
     return db;
@@ -1042,7 +1042,10 @@ const char *rewrite_db(const char* db)
   while ((tmp=it++))
   {
     if (!strcmp(tmp->key, db))
+    {
+      *new_len= strlen(tmp->val);
       return tmp->val;
+    }
   }
   return db;
 }
@@ -1056,7 +1059,7 @@ const char *rewrite_db(const char* db)
 
 const char *print_slave_db_safe(const char* db)
 {
-  return (db ? rewrite_db(db) : "");
+  return (db ? db : "");
 }
 
 /*

sql/slave.h

@@ -510,8 +510,8 @@ int add_table_rule(HASH* h, const char* table_spec);
 int add_wild_table_rule(DYNAMIC_ARRAY* a, const char* table_spec);
 void init_table_rule_hash(HASH* h, bool* h_inited);
 void init_table_rule_array(DYNAMIC_ARRAY* a, bool* a_inited);
-const char *rewrite_db(const char* db);
-const char *print_slave_db_safe(const char* db);
+const char *rewrite_db(const char* db, uint *new_db_len);
+const char *print_slave_db_safe(const char *db);
 int check_expected_error(THD* thd, RELAY_LOG_INFO* rli, int error_code);
 void skip_load_data_infile(NET* net);
 void slave_print_error(RELAY_LOG_INFO* rli, int err_code, const char* msg, ...);

sql/sql_lex.h

@@ -613,7 +613,7 @@ typedef struct st_lex
   uint uint_geom_type;
   uint grant, grant_tot_col, which_columns;
   uint fk_delete_opt, fk_update_opt, fk_match_option;
-  uint slave_thd_opt;
+  uint slave_thd_opt, start_transaction_opt;
   uint8 describe;
   bool drop_if_exists, drop_temporary, local_file, one_shot_set;
   bool in_comment, ignore_space, verbose, no_write_to_binlog;

sql/sql_parse.cc

@@ -3076,6 +3076,12 @@ purposes internal to the MySQL server", MYF(0));
   }
 
   case SQLCOM_UNLOCK_TABLES:
+    /*
+      It is critical for mysqldump --single-transaction --master-data that
+      UNLOCK TABLES does not implicitely commit a connection which has only
+      done FLUSH TABLES WITH READ LOCK + BEGIN. If this assumption becomes
+      false, mysqldump will not work.
+    */
     unlock_locked_tables(thd);
     if (thd->options & OPTION_TABLE_LOCK)
     {
@@ -3462,7 +3468,9 @@ purposes internal to the MySQL server", MYF(0));
       thd->options= ((thd->options & (ulong) ~(OPTION_STATUS_NO_TRANS_UPDATE)) |
 		     OPTION_BEGIN);
       thd->server_status|= SERVER_STATUS_IN_TRANS;
-      send_ok(thd);
+      if (!(lex->start_transaction_opt & MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT) ||
+          !(res= ha_start_consistent_snapshot(thd)))
+        send_ok(thd);
     }
     break;
   case SQLCOM_COMMIT:

sql/sql_yacc.yy

@@ -131,6 +131,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
 %token	CLIENT_SYM
 %token	COMMENT_SYM
 %token	COMMIT_SYM
+%token  CONSISTENT_SYM
 %token	COUNT_SYM
 %token	CREATE
 %token	CROSS
@@ -165,6 +166,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
 %token	SELECT_SYM
 %token	SHOW
 %token	SLAVE
+%token  SNAPSHOT_SYM
 %token	SQL_THREAD
 %token	START_SYM
 %token	STD_SYM
@@ -618,6 +620,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
         table_option opt_if_not_exists opt_no_write_to_binlog opt_var_type
         opt_var_ident_type delete_option opt_temporary all_or_any opt_distinct
         opt_ignore_leaves fulltext_options spatial_type union_option
+        start_transaction_opts
 
 %type <ulong_num>
 	ULONG_NUM raid_types merge_insert_types
@@ -2095,10 +2098,20 @@ slave:
 
 
 start:
-	START_SYM TRANSACTION_SYM { Lex->sql_command = SQLCOM_BEGIN;}
-	{}
+	START_SYM TRANSACTION_SYM start_transaction_opts
+        {
+           Lex->sql_command = SQLCOM_BEGIN;
+           Lex->start_transaction_opt= $3;
+        }
 	;
 
+start_transaction_opts:
+        /*empty*/ { $$ = 0; }
+        | WITH CONSISTENT_SYM SNAPSHOT_SYM
+        {
+           $$= MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT;
+        }
+
 slave_thread_opts:
 	{ Lex->slave_thd_opt= 0; }
 	slave_thread_opt_list
@@ -5122,6 +5135,7 @@ keyword:
 	| COMMIT_SYM		{}
 	| COMPRESSED_SYM	{}
 	| CONCURRENT		{}
+	| CONSISTENT_SYM	{}
 	| CUBE_SYM		{}
 	| DATA_SYM		{}
 	| DATETIME		{}
@@ -5262,6 +5276,7 @@ keyword:
 	| SHARE_SYM		{}
 	| SHUTDOWN		{}
 	| SLAVE			{}
+	| SNAPSHOT_SYM		{}
 	| SOUNDS_SYM		{}
 	| SQL_CACHE_SYM		{}
 	| SQL_BUFFER_RESULT	{}
@@ -5888,7 +5903,7 @@ grant_option:
         ;
 
 begin:
-	BEGIN_SYM   { Lex->sql_command = SQLCOM_BEGIN;} opt_work {}
+	BEGIN_SYM   { Lex->sql_command = SQLCOM_BEGIN; Lex->start_transaction_opt= 0;} opt_work {}
 	;
 
 opt_work: