BUG#6883: Added implicit commit for CREATE TABLE, TRUNCATE TABLE and DROP/CREATE DATABASE

mysql-test/r/innodb.result:
  Truncate table now work even if there is open trx
mysql-test/r/innodb_cache.result:
  One query in cache
mysql-test/t/innodb.test:
  Truncate table now succeed even if there is an open transaction
sql/sql_parse.cc:
  Added implicit commit for temp table CREATE TABLE, TRUNCATE TABLE, CREATE/DROP DATABASE.

mysql-test/include/rpl_stmt_seq.inc

+# include/rpl_stmt_seq.inc
+#
+# Please be very careful when editing this routine, because the handling of 
+# the $variables is extreme sensitive. 
+#
+
+######## The typical test sequence
+# 1. INSERT without commit
+#    check table content of master and slave
+# 2. EXECUTE the statement
+#    check table content of master and slave
+# 3. ROLLBACK
+#    check table content of master and slave
+# 4. flush the logs
+
+let $VERSION=`select version()`;
+
+--disable_query_log
+# SELECT '######## new test sequence ########' as "";
+eval SELECT CONCAT('######## ','$my_stmt','  ########') as "";
+--enable_query_log
+
+
+### Predict the number of the current log
+# Disable the logging of the log number computation. 
+--disable_query_log
+# $_log_num_n should contain the number of the current binlog in numeric style.
+# If this routine is called for the first time, $_log_num will not initialized
+# and contain the value '' instead of '1'. So we will correct it here.
+#
+eval set @aux= IF('$_log_num_n' = '', '1', '$_log_num_n');
+let $_log_num_n= `SELECT @aux`;
+eval set @aux= LPAD('$_log_num_n',6,'0');
+#              SELECT @aux AS "@aux is";
+#
+# $_log_num_s should contain the number of the current binlog in string style.
+let $_log_num_s= `select @aux`;
+# eval SELECT '$log_num' ;
+--enable_query_log
+
+# INSERT + command to be tested + ROLLBACK
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+# Maybe it would be smarter to use a table with autoincrement column.
+let $MAX= `SELECT MAX(f1) FROM t1` ;
+eval INSERT INTO t1 SET f1= $MAX + 1;
+# results before DDL(to be tested)
+SELECT MAX(f1) FROM t1;
+--replace_result $VERSION VERSION
+eval SHOW BINLOG EVENTS IN 'master-bin.$_log_num_s';
+sync_slave_with_master;
+
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+# results before DDL(to be tested)
+SELECT MAX(f1) FROM t1;
+--replace_result $VERSION VERSION
+eval SHOW BINLOG EVENTS IN 'slave-bin.$_log_num_s';
+
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+eval $my_stmt;
+# Devaluate $my_stmt, to detect script bugs
+let $my_stmt= ERROR: YOU FORGOT TO FILL IN THE STATEMENT;
+# results after DDL(to be tested)
+SELECT MAX(f1) FROM t1;
+--replace_result $VERSION VERSION
+eval SHOW BINLOG EVENTS IN 'master-bin.$_log_num_s';
+sync_slave_with_master;
+
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+# results after DDL(to be tested)
+SELECT MAX(f1) FROM t1;
+--replace_result $VERSION VERSION
+eval SHOW BINLOG EVENTS IN 'slave-bin.$_log_num_s';
+
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+ROLLBACK;
+# results after final ROLLBACK
+SELECT MAX(f1) FROM t1;
+# Try to detect if the DDL command caused that the INSERT is committed
+# $MAX holds the highest/last value just before the insert of MAX + 1
+--disable_query_log
+eval SELECT CONCAT('TEST-INFO: MASTER: The INSERT is      ',
+               IF(MAX(f1) = $MAX + 1, 'committed', 'not committed')) AS ""
+FROM d1.t1;
+--enable_query_log
+--replace_result $VERSION VERSION
+eval SHOW BINLOG EVENTS IN 'master-bin.$_log_num_s';
+sync_slave_with_master;
+
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+# results after final ROLLBACK
+SELECT MAX(f1) FROM t1;
+--disable_query_log
+eval SELECT CONCAT('TEST-INFO: SLAVE:  The INSERT is      ',
+               IF(MAX(f1) = $MAX + 1, 'committed', 'not committed')) AS ""
+FROM d1.t1;
+--enable_query_log
+--replace_result $VERSION VERSION
+eval SHOW BINLOG EVENTS IN 'slave-bin.$_log_num_s';
+
+#let $manipulate= 0;
+let $manipulate= 1;
+while ($manipulate)
+{
+#### Manipulate the binary logs,
+# so that the output of SHOW BINLOG EVENTS IN <current log>
+# contains only commands of the current test sequence.
+# - flush the master and the slave log
+#   ---> both start to write into new logs with incremented number
+# - increment $_log_num_n
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+flush logs;
+# sleep 1;
+# eval SHOW BINLOG EVENTS IN 'master-bin.$_log_num_s';
+sync_slave_with_master;
+
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+# the final content of the binary log
+flush logs;
+# The next sleep is urgent needed.
+# Without this sleep the slaves crashes often, when the SHOW BINLOG
+# is executed.   :-(
+# sleep 1;
+# eval SHOW BINLOG EVENTS IN 'slave-bin.$_log_num_s';
+inc $_log_num_n;
+let $manipulate= 0;
+}
+
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log

mysql-test/r/innodb.result

@@ -875,7 +875,6 @@ set autocommit=0;
 create table t1 (a int not null) engine= innodb;
 insert into t1 values(1),(2);
 truncate table t1;
-ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
 commit;
 truncate table t1;
 truncate table t1;
@@ -1598,14 +1597,14 @@ t2	CREATE TABLE `t2` (
 drop table t2, t1;
 show status like "binlog_cache_use";
 Variable_name	Value
-Binlog_cache_use	24
+Binlog_cache_use	25
 show status like "binlog_cache_disk_use";
 Variable_name	Value
 Binlog_cache_disk_use	0
 create table t1 (a int) engine=innodb;
 show status like "binlog_cache_use";
 Variable_name	Value
-Binlog_cache_use	25
+Binlog_cache_use	26
 show status like "binlog_cache_disk_use";
 Variable_name	Value
 Binlog_cache_disk_use	1
@@ -1614,7 +1613,7 @@ delete from t1;
 commit;
 show status like "binlog_cache_use";
 Variable_name	Value
-Binlog_cache_use	26
+Binlog_cache_use	27
 show status like "binlog_cache_disk_use";
 Variable_name	Value
 Binlog_cache_disk_use	1

mysql-test/r/innodb_cache.result

@@ -24,7 +24,7 @@ a
 3
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
-Qcache_queries_in_cache	0
+Qcache_queries_in_cache	1
 drop table t1;
 commit;
 create table t1 (a int not null) engine=innodb;

mysql-test/t/innodb.test

@@ -570,7 +570,6 @@ show tables from mysqltest;
 set autocommit=0;
 create table t1 (a int not null) engine= innodb;
 insert into t1 values(1),(2);
---error 1192
 truncate table t1;
 commit;
 truncate table t1;

mysql-test/t/rpl_ddl.test

+######################## rpl-ddl.test ########################
+#                                                            #
+# DDL statements (sometimes with implicit COMMIT) executed   #
+# by the master and it's propagation into the slave          #
+#                                                            #
+##############################################################
+
+#
+# NOTE, PLEASE BE CAREFUL, WHEN MODIFYING THE TESTS !!
+#
+#      1. !All! objects to be dropped, renamed, altered ... must be created
+#         in AUTOCOMMIT= 1 mode before AUTOCOMMIT is set to 0 and the test
+#         sequences start.
+#
+#      2. Never use a test object, which was direct or indirect affected by a
+#         preceeding test sequence again.
+#         Except table d1.t1 where ONLY DML is allowed.
+#
+#         If one preceeding test sequence hits a (sometimes not good visible,
+#         because the sql error code of the statement might be 0) bug
+#         and these rules are ignored, a following test sequence might earn ugly
+#         effects like failing 'sync_slave_with_master', crashes of the slave or
+#         abort of the test case etc..
+#
+#      3. The assignment of the DDL command to be tested to $my_stmt can
+#         be a bit difficult. "'" must be avoided, because the test
+#         routine "include/rpl_stmt_seq.inc" performs a
+#         eval SELECT CONCAT('######## ','$my_stmt','  ########') as "";
+#
+
+######## tested DDL commands
+#
+# let $my_stmt= COMMIT;
+# let $my_stmt= ROLLBACK;
+# let $my_stmt= SET AUTOCOMMIT=1;
+# let $my_stmt= START TRANSACTION;
+# let $my_stmt= BEGIN;
+# let $my_stmt= DROP TABLE d1.t2;
+# let $my_stmt= RENAME TABLE d1.t3 to d1.t20; <- wrong syntax !!
+# let $my_stmt= ALTER TABLE d1.t4 ADD column f2 BIGINT;
+# let $my_stmt= CREATE TABLE d1.t21 (f1 BIGINT) ENGINE= "InnoDB";
+# let $my_stmt= TRUNCATE TABLE d1.t7;
+# let $my_stmt= LOCK TABLES d1.t1 WRITE, d1.t8 READ;
+# let $my_stmt= UNLOCK TABLES;
+# let $my_stmt= DROP INDEX my_idx6 ON d1.t6;
+# let $my_stmt= CREATE INDEX my_idx5 ON d1.t5(f1);
+# let $my_stmt= DROP DATABASE d2;
+# let $my_stmt= CREATE DATABASE d3;
+#
+# FIXME: @code{LOAD MASTER DATA} is not tested
+#
+#############################################
+
+--source include/have_innodb.inc
+source include/master-slave.inc;
+
+
+######## some preparations
+#
+SET AUTOCOMMIT = 1;
+#
+# 1. DROP all objects, which probably already exist, but must be created here
+#
+--disable_warnings
+DROP DATABASE IF EXISTS d1;
+DROP DATABASE IF EXISTS d2;
+DROP DATABASE IF EXISTS d3;
+--enable_warnings
+#
+# 2. CREATE all objects needed
+#    working database is d1
+#    working (transactional!) is d1.t1 
+#
+CREATE DATABASE d1;
+CREATE DATABASE d2;
+CREATE TABLE d1.t1 (f1 BIGINT) ENGINE= "InnoDB";
+INSERT INTO d1.t1 SET f1= 0;
+CREATE TABLE d1.t2 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t3 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t4 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t5 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t6 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE INDEX my_idx6 ON d1.t6(f1);
+CREATE TABLE d1.t7 (f1 BIGINT) ENGINE= "InnoDB";
+INSERT INTO d1.t7 SET f1= 0;
+CREATE TABLE d1.t8 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t9 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t10 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t11 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t12 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t13 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t14 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t15 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t16 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t17 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t18 (f1 BIGINT) ENGINE= "InnoDB";
+CREATE TABLE d1.t19 (f1 BIGINT) ENGINE= "InnoDB";
+#
+COMMIT; # Just to be sure
+#
+# 3. master sessions: never do AUTOCOMMIT
+#    slave  sessions: do AUTOCOMMIT, because we want to see fresh values 
+#                      every time
+#              default database is d1
+SET AUTOCOMMIT = 0;
+use d1;
+sync_slave_with_master;
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SET AUTOCOMMIT = 1;
+use d1;
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+
+
+# We don't want to abort the whole test if one statement sent
+# to the server gets an error, because the following test
+# sequences are nearly independend of the previous statements. 
+--disable_abort_on_error
+
+###### banal case: (explicit) COMMIT and ROLLBACK
+# just for checking if the test sequence is usable
+let $my_stmt= COMMIT;
+--source include/rpl_stmt_seq.inc
+let $my_stmt= ROLLBACK;
+--source include/rpl_stmt_seq.inc
+
+###### cases with commands very similar to COMMIT
+let $my_stmt= SET AUTOCOMMIT=1;
+--source include/rpl_stmt_seq.inc
+SET AUTOCOMMIT=0;
+#
+let $my_stmt= START TRANSACTION;
+--source include/rpl_stmt_seq.inc
+#
+let $my_stmt= BEGIN;
+--source include/rpl_stmt_seq.inc
+
+###### cases with commands, which create or drop objects
+#### (BASE) TABLES and (UPDATABLE) VIEWs
+let $my_stmt= DROP TABLE d1.t2;
+--source include/rpl_stmt_seq.inc
+SHOW TABLES LIKE 't2';
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SHOW TABLES LIKE 't2';
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+#
+let $my_stmt= RENAME TABLE d1.t3 to d1.t20;
+--source include/rpl_stmt_seq.inc
+SHOW TABLES LIKE 't20';
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SHOW TABLES LIKE 't20';
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+#
+let $my_stmt= ALTER TABLE d1.t4 ADD column f2 BIGINT;
+--source include/rpl_stmt_seq.inc
+describe d1.t4;
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+describe d1.t4;
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+#
+let $my_stmt= CREATE TABLE d1.t21 (f1 BIGINT) ENGINE= "InnoDB";
+--source include/rpl_stmt_seq.inc
+#
+let $my_stmt= TRUNCATE TABLE d1.t7;
+--source include/rpl_stmt_seq.inc
+SELECT * FROM d1.t7;
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SELECT * FROM d1.t7;
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+#
+# MySQL insists in locking d1.t1, because rpl_stmt_seq performs an INSERT into
+# this table.
+let $my_stmt= LOCK TABLES d1.t1 WRITE, d1.t8 READ;
+--source include/rpl_stmt_seq.inc
+UNLOCK TABLES;
+#
+LOCK TABLES d1.t1 WRITE, d1.t8 READ;
+let $my_stmt= UNLOCK TABLES;
+--source include/rpl_stmt_seq.inc
+#
+#### INDEXES
+let $my_stmt= DROP INDEX my_idx6 ON d1.t6;
+--source include/rpl_stmt_seq.inc
+SHOW INDEX FROM d1.t6;
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SHOW INDEX FROM d1.t6;
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+#
+let $my_stmt= CREATE INDEX my_idx5 ON d1.t5(f1);
+--source include/rpl_stmt_seq.inc
+SHOW INDEX FROM d1.t5;
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SHOW INDEX FROM d1.t5;
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+
+#### DATABASES
+let $my_stmt= DROP DATABASE d2;
+--source include/rpl_stmt_seq.inc
+SHOW DATABASES LIKE "d2";
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SHOW DATABASES LIKE "d2";
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+#
+let $my_stmt= CREATE DATABASE d3;
+--source include/rpl_stmt_seq.inc
+SHOW DATABASES LIKE "d3";
+connection slave;
+--disable_query_log
+SELECT '-------- switch to slave --------' as "";
+--enable_query_log
+SHOW DATABASES LIKE "d3";
+connection master;
+--disable_query_log
+SELECT '-------- switch to master -------' as "";
+--enable_query_log
+
+--disable_warnings
+DROP DATABASE IF EXISTS d1;
+DROP DATABASE IF EXISTS d2;
+DROP DATABASE IF EXISTS d3;
+--enable_warnings

sql/sql_parse.cc

@@ -2409,6 +2409,11 @@ mysql_execute_command(THD *thd)
 
   case SQLCOM_CREATE_TABLE:
   {
+    /* If CREATE TABLE of non-temporary table, do implicit commit */
+    if (!(lex->create_info.options & HA_LEX_CREATE_TMP_TABLE) && 
+	end_active_trans(thd))
+      res= -1;
+
     /* Skip first table, which is the table we are creating */
     TABLE_LIST *create_table, *create_table_local;
     tables= lex->unlink_first_table(tables, &create_table,
@@ -2855,6 +2860,11 @@ unsent_create_error:
     break;
   }
   case SQLCOM_TRUNCATE:
+    if (end_active_trans(thd))
+    {
+      res= -1;
+      break;
+    }
     if (check_one_table_access(thd, DELETE_ACL, tables))
       goto error;
     /*
@@ -3213,6 +3223,11 @@ purposes internal to the MySQL server", MYF(0));
     break;
   case SQLCOM_CREATE_DB:
   {
+    if (end_active_trans(thd))
+    {
+      res= -1;
+      break;
+    }
     char *alias;
     if (!(alias=thd->strdup(lex->name)) || check_db_name(lex->name))
     {
@@ -3243,6 +3258,11 @@ purposes internal to the MySQL server", MYF(0));
   }
   case SQLCOM_DROP_DB:
   {
+    if (end_active_trans(thd))
+    {
+      res= -1;
+      break;
+    }
     char *alias;
     if (!(alias=thd->strdup(lex->name)) || check_db_name(lex->name))
     {