diff --git a/configure.in b/configure.in
index 94bc85557df..cf1b4b0cd32 100644
--- a/configure.in
+++ b/configure.in
@@ -2516,9 +2516,9 @@ linked_client_targets="linked_libmysql_sources"
 
 if test "$THREAD_SAFE_CLIENT" = "no"
 then
-  sql_client_dirs="strings regex mysys extra libmysql client"
+  sql_client_dirs="strings regex mysys dbug extra libmysql client"
 else
-  sql_client_dirs="strings regex mysys extra libmysql libmysql_r client"
+  sql_client_dirs="strings regex mysys dbug extra libmysql libmysql_r client"
   linked_client_targets="$linked_client_targets linked_libmysql_r_sources"
   AC_CONFIG_FILES(libmysql_r/Makefile)
   AC_DEFINE([THREAD_SAFE_CLIENT], [1], [Should be client be thread safe])
diff --git a/myisam/mi_packrec.c b/myisam/mi_packrec.c
index 37614cc1e1f..d45d6f8b16f 100644
--- a/myisam/mi_packrec.c
+++ b/myisam/mi_packrec.c
@@ -592,8 +592,8 @@ static uint copy_decode_table(uint16 *to_pos, uint offset,
 			      uint16 *decode_table)
 {
   uint prev_offset;
-  prev_offset= offset;
   DBUG_ENTER("copy_decode_table");
+  prev_offset= offset;
 
   /* Descent on the left side. */
   if (!(*decode_table & IS_CHAR))
diff --git a/mysql-test/r/ndb_lock.result b/mysql-test/r/ndb_lock.result
index 2c212b9cfef..d5875cb4d47 100644
--- a/mysql-test/r/ndb_lock.result
+++ b/mysql-test/r/ndb_lock.result
@@ -87,11 +87,27 @@ x	y	z
 rollback;
 commit;
 begin;
+select * from t1 where y = 'one' or y = 'three' for update;
+x	y	z
+#	#	#
+#	#	#
+begin;
+select * from t1 where x = 2 for update;
+x	y	z
+2	two	2
+select * from t1 where x = 1 for update;
+ERROR HY000: Lock wait timeout exceeded; try restarting transaction
+rollback;
+commit;
+begin;
 select * from t1 where y = 'one' or y = 'three' order by x for update;
 x	y	z
 1	one	1
 3	three	3
 begin;
+select * from t1 where x = 2 for update;
+x	y	z
+2	two	2
 select * from t1 where x = 1 for update;
 ERROR HY000: Lock wait timeout exceeded; try restarting transaction
 rollback;
@@ -124,6 +140,22 @@ ERROR HY000: Lock wait timeout exceeded; try restarting transaction
 rollback;
 commit;
 begin;
+select * from t1 where y = 'one' or y = 'three' lock in share mode;
+x	y	z
+#	#	#
+#	#	#
+begin;
+select * from t1 where y = 'one' lock in share mode;
+x	y	z
+1	one	1
+select * from t1 where x = 2 for update;
+x	y	z
+2	two	2
+select * from t1 where x = 1 for update;
+ERROR HY000: Lock wait timeout exceeded; try restarting transaction
+rollback;
+commit;
+begin;
 select * from t1 where y = 'one' or y = 'three' order by x lock in share mode;
 x	y	z
 1	one	1
@@ -132,6 +164,9 @@ begin;
 select * from t1 where y = 'one' lock in share mode;
 x	y	z
 1	one	1
+select * from t1 where x = 2 for update;
+x	y	z
+2	two	2
 select * from t1 where x = 1 for update;
 ERROR HY000: Lock wait timeout exceeded; try restarting transaction
 rollback;
diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result
index 000a9317b8d..21d8ba05acc 100644
--- a/mysql-test/r/ps.result
+++ b/mysql-test/r/ps.result
@@ -1055,6 +1055,65 @@ EXECUTE stmt USING @a;
 0	0
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
+DROP TABLE IF EXISTS t1, t2;
+CREATE TABLE t1 (i INT);
+PREPARE st_19182
+FROM "CREATE TABLE t2 (i INT, j INT, KEY (i), KEY(j)) SELECT i FROM t1";
+EXECUTE st_19182;
+DESC t2;
+Field	Type	Null	Key	Default	Extra
+j	int(11)	YES	MUL	NULL	
+i	int(11)	YES	MUL	NULL	
+DROP TABLE t2;
+EXECUTE st_19182;
+DESC t2;
+Field	Type	Null	Key	Default	Extra
+j	int(11)	YES	MUL	NULL	
+i	int(11)	YES	MUL	NULL	
+DEALLOCATE PREPARE st_19182;
+DROP TABLE t2, t1;
+drop database if exists mysqltest;
+drop table if exists t1, t2;
+create database mysqltest character set utf8;
+prepare stmt1 from "create table mysqltest.t1 (c char(10))";
+prepare stmt2 from "create table mysqltest.t2 select 'test'";
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c` char(10) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=utf8
+show create table mysqltest.t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `test` varchar(4) character set latin1 NOT NULL default ''
+) ENGINE=MyISAM DEFAULT CHARSET=utf8
+drop table mysqltest.t1;
+drop table mysqltest.t2;
+alter database mysqltest character set latin1;
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c` char(10) character set utf8 default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+show create table mysqltest.t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `test` varchar(4) NOT NULL default ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop database mysqltest;
+deallocate prepare stmt1;
+deallocate prepare stmt2;
+execute stmt;
+show create table t1;
+drop table t1;
+execute stmt;
+show create table t1;
+drop table t1;
+deallocate prepare stmt;
 End of 4.1 tests.
 create table t1 (a varchar(20));
 insert into t1 values ('foo');
@@ -1536,4 +1595,54 @@ a
 2
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1,t2;
+drop table if exists t1;
+create table t1 (s1 char(20));
+prepare stmt from "alter table t1 modify s1 int";
+execute stmt;
+execute stmt;
+drop table t1;
+deallocate prepare stmt;
+drop table if exists t1;
+create table t1 (a int, b int);
+prepare s_6895 from "alter table t1 drop column b";
+execute s_6895;
+show columns from t1;
+Field	Type	Null	Key	Default	Extra
+a	int(11)	YES		NULL	
+drop table t1;
+create table t1 (a int, b int);
+execute s_6895;
+show columns from t1;
+Field	Type	Null	Key	Default	Extra
+a	int(11)	YES		NULL	
+drop table t1;
+create table t1 (a int, b int);
+execute s_6895;
+show columns from t1;
+Field	Type	Null	Key	Default	Extra
+a	int(11)	YES		NULL	
+deallocate prepare s_6895;
+drop table t1;
+create table t1 (i int primary key auto_increment) comment='comment for table t1';
+create table t2 (i int, j int, k int);
+prepare stmt from "alter table t1 auto_increment=100";
+execute stmt;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `i` int(11) NOT NULL auto_increment,
+  PRIMARY KEY  (`i`)
+) ENGINE=MyISAM AUTO_INCREMENT=100 DEFAULT CHARSET=latin1 COMMENT='comment for table t1'
+flush tables;
+select * from t2;
+i	j	k
+execute stmt;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `i` int(11) NOT NULL auto_increment,
+  PRIMARY KEY  (`i`)
+) ENGINE=MyISAM AUTO_INCREMENT=100 DEFAULT CHARSET=latin1 COMMENT='comment for table t1'
+deallocate prepare stmt;
+drop table t1, t2;
 End of 5.0 tests.
diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index 44063c1e890..a7f6f638966 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -3611,3 +3611,9 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	range	si,ai	si	5	NULL	2	Using where
 1	SIMPLE	t3	eq_ref	PRIMARY,ci	PRIMARY	4	test.t2.a	1	Using where
 DROP TABLE t1,t2,t3;
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1(a int);
+INSERT into t1 values (1), (2), (3);
+SELECT * FROM t1 LIMIT 2, -1;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-1' at line 1
+DROP TABLE t1;
diff --git a/mysql-test/r/sp.result b/mysql-test/r/sp.result
index 9db4325aea2..69a4ddacf74 100644
--- a/mysql-test/r/sp.result
+++ b/mysql-test/r/sp.result
@@ -5626,6 +5626,23 @@ Called B
 Called B
 drop procedure proc_21462_a|
 drop procedure proc_21462_b|
+drop table if exists t3|
+drop procedure if exists proc_bug19733|
+create table t3 (s1 int)|
+create procedure proc_bug19733()
+begin
+declare v int default 0;
+while v < 100 do
+create index i on t3 (s1);
+drop index i on t3;
+set v = v + 1;
+end while;
+end|
+call proc_bug19733()|
+call proc_bug19733()|
+call proc_bug19733()|
+drop procedure proc_bug19733|
+drop table t3|
 End of 5.0 tests
 DROP TABLE IF EXISTS bug23760|
 DROP TABLE IF EXISTS bug23760_log|
diff --git a/mysql-test/t/ndb_lock.test b/mysql-test/t/ndb_lock.test
index 48a8b77dcd7..8dc02dc20cb 100644
--- a/mysql-test/t/ndb_lock.test
+++ b/mysql-test/t/ndb_lock.test
@@ -102,16 +102,36 @@ connection con1;
 commit;
 
 # table scan
+#
+# Note that there are two distinct execution paths in which we unlock
+# non-matching rows inspected during table scan - one that is used in
+# case of filesort and one that used in rest of cases. Below we cover
+# the latter (Bug #20390 "SELECT FOR UPDATE does not release locks of
+# untouched rows in full table scans").
 connection con1;
 begin;
-select * from t1 where y = 'one' or y = 'three' order by x for update;
+# We can't use "order by x" here as it will cause filesort
+--replace_column 1 # 2 # 3 #
+select * from t1 where y = 'one' or y = 'three' for update;
 
 connection con2;
 begin;
 # Have to check with pk access here since scans take locks on
 # all rows and then release them in chunks
-# Bug #20390 SELECT FOR UPDATE does not release locks of untouched rows in full table scans
-#select * from t1 where x = 2 for update;
+select * from t1 where x = 2 for update;
+--error 1205
+select * from t1 where x = 1 for update;
+rollback;
+
+connection con1;
+commit;
+
+# And now the test for case with filesort
+begin;
+select * from t1 where y = 'one' or y = 'three' order by x for update;
+connection con2;
+begin;
+select * from t1 where x = 2 for update;
 --error 1205
 select * from t1 where x = 1 for update;
 rollback;
@@ -157,15 +177,32 @@ commit;
 # table scan
 connection con1;
 begin;
-select * from t1 where y = 'one' or y = 'three' order by x lock in share mode;
+# We can't use "order by x" here as it will cause filesort
+--replace_column 1 # 2 # 3 #
+select * from t1 where y = 'one' or y = 'three' lock in share mode;
 
 connection con2;
 begin;
 select * from t1 where y = 'one' lock in share mode;
 # Have to check with pk access here since scans take locks on
 # all rows and then release them in chunks
-# Bug #20390 SELECT FOR UPDATE does not release locks of untouched rows in full table scans
-#select * from t1 where x = 2 for update;
+select * from t1 where x = 2 for update;
+--error 1205
+select * from t1 where x = 1 for update;
+rollback;
+
+connection con1;
+commit;
+
+# And the same test for case with filesort
+connection con1;
+begin;
+select * from t1 where y = 'one' or y = 'three' order by x lock in share mode;
+
+connection con2;
+begin;
+select * from t1 where y = 'one' lock in share mode;
+select * from t1 where x = 2 for update;
 --error 1205
 select * from t1 where x = 1 for update;
 rollback;
diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test
index f6de2a40efa..5f00aa60b11 100644
--- a/mysql-test/t/ps.test
+++ b/mysql-test/t/ps.test
@@ -1106,11 +1106,95 @@ EXECUTE stmt USING @a;
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
 
+#
+# Bug#19182: CREATE TABLE bar (m INT) SELECT n FROM foo; doesn't work
+# from stored procedure.
+#
+# The cause of a bug was that cached LEX::create_list was modified,
+# and then together with LEX::key_list was reset.
+#
+--disable_warnings
+DROP TABLE IF EXISTS t1, t2;
+--enable_warnings
+
+CREATE TABLE t1 (i INT);
+
+PREPARE st_19182
+FROM "CREATE TABLE t2 (i INT, j INT, KEY (i), KEY(j)) SELECT i FROM t1";
+
+EXECUTE st_19182;
+DESC t2;
+
+DROP TABLE t2;
+
+# Check that on second execution we don't loose 'j' column and the keys
+# on 'i' and 'j' columns.
+EXECUTE st_19182;
+DESC t2;
+
+DEALLOCATE PREPARE st_19182;
+DROP TABLE t2, t1;
+
+#
+# Bug #22060 "ALTER TABLE x AUTO_INCREMENT=y in SP crashes server"
+#
+# Code which implemented CREATE/ALTER TABLE and CREATE DATABASE
+# statement modified HA_CREATE_INFO structure in LEX, making these
+# statements PS/SP-unsafe (their re-execution might have resulted
+# in incorrect results).
+#
+--disable_warnings
+drop database if exists mysqltest;
+drop table if exists t1, t2;
+--enable_warnings
+# CREATE TABLE and CREATE TABLE ... SELECT
+create database mysqltest character set utf8;
+prepare stmt1 from "create table mysqltest.t1 (c char(10))";
+prepare stmt2 from "create table mysqltest.t2 select 'test'";
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+show create table mysqltest.t2;
+drop table mysqltest.t1;
+drop table mysqltest.t2;
+alter database mysqltest character set latin1;
+execute stmt1;
+execute stmt2;
+show create table mysqltest.t1;
+show create table mysqltest.t2;
+drop database mysqltest;
+deallocate prepare stmt1;
+deallocate prepare stmt2;
+#
+# CREATE TABLE with DATA DIRECTORY option
+#
+# Protect ourselves from data left in tmp/ by a previos possibly failed
+# test
+--system rm -f $MYSQLTEST_VARDIR/tmp/t1.*
+--disable_query_log
+eval prepare stmt from "create table t1 (c char(10)) data directory='$MYSQLTEST_VARDIR/tmp'";
+--enable_query_log
+execute stmt;
+#
+# DATA DIRECTORY option does not always work: if the operating
+# system does not support symlinks, have_symlinks option is automatically
+# disabled.
+# In this case DATA DIRECTORY is silently ignored when
+# creating a table, and is not output by SHOW CREATE TABLE.
+#
+--disable_result_log
+show create table t1;
+--enable_result_log
+drop table t1;
+execute stmt;
+--disable_result_log
+show create table t1;
+--enable_result_log
+drop table t1;
+deallocate prepare stmt;
 
 --echo End of 4.1 tests.
 
-
-
 ############################# 5.0 tests start ################################
 #
 #
@@ -1585,5 +1669,76 @@ EXECUTE stmt USING @arg;
 DEALLOCATE PREPARE stmt;
 
 DROP TABLE t1,t2;
+#
+# Bug#4968 "Stored procedure crash if cursor opened on altered table"
+# The bug is not repeatable any more after the fix for
+# Bug#15217 "Bug #15217   Using a SP cursor on a table created with PREPARE
+# fails with weird error", however ALTER TABLE is not re-execution friendly
+# and that caused a valgrind warning. Check that the warning is gone.
+#
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+create table t1 (s1 char(20));
+prepare stmt from "alter table t1 modify s1 int";
+execute stmt;
+execute stmt;
+drop table t1;
+deallocate prepare stmt;
+
+#
+# Bug#6895 "Prepared Statements: ALTER TABLE DROP COLUMN does nothing"
+#
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+create table t1 (a int, b int);
+prepare s_6895 from "alter table t1 drop column b";
+execute s_6895;
+show columns from t1;
+drop table t1;
+create table t1 (a int, b int);
+execute s_6895;
+show columns from t1;
+drop table t1;
+create table t1 (a int, b int);
+execute s_6895;
+show columns from t1;
+deallocate prepare s_6895;
+drop table t1;
+
+#
+# Bug #22060 "ALTER TABLE x AUTO_INCREMENT=y in SP crashes server"
+#
+# 5.0 part of the test.
+#
+
+# ALTER TABLE
+create table t1 (i int primary key auto_increment) comment='comment for table t1';
+create table t2 (i int, j int, k int);
+prepare stmt from "alter table t1 auto_increment=100";
+execute stmt;
+show create table t1;
+# Let us trash table-cache's memory
+flush tables;
+select * from t2;
+execute stmt;
+show create table t1;
+deallocate prepare stmt;
+drop table t1, t2;
+# 5.1 part of the test.
+# CREATE DATABASE
+#set @old_character_set_server= @@character_set_server;
+#set @@character_set_server= latin1; 
+#prepare stmt from "create database mysqltest";
+#execute stmt;
+#show create database mysqltest;
+#drop database mysqltest;
+#set @@character_set_server= utf8; 
+#execute stmt;
+#show create database mysqltest;
+#drop database mysqltest;
+#deallocate prepare stmt;
+#set @@character_set_server= @old_character_set_server;
 
 --echo End of 5.0 tests.
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index 0c82cef867f..332389220f6 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -3092,3 +3092,23 @@ SELECT t3.a FROM t1,t2,t3
         t3.c IN ('bb','ee');
 
 DROP TABLE t1,t2,t3;
+
+#
+# Bug#6298: LIMIT #, -1 no longer works to set start with no end limit
+#
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+CREATE TABLE t1(a int);
+INSERT into t1 values (1), (2), (3);
+
+# LIMIT N, -1 was accepted by accident in 4.0, but was not intended.
+# This test verifies that this illegal construct is now properly detected.
+
+--error ER_PARSE_ERROR
+SELECT * FROM t1 LIMIT 2, -1;
+
+DROP TABLE t1;
+
diff --git a/mysql-test/t/sp.test b/mysql-test/t/sp.test
index 524ee9cf66c..e5d019a215f 100644
--- a/mysql-test/t/sp.test
+++ b/mysql-test/t/sp.test
@@ -6587,6 +6587,34 @@ call proc_21462_b(1)|
 drop procedure proc_21462_a|
 drop procedure proc_21462_b|
 
+
+#
+# Bug#19733 "Repeated alter, or repeated create/drop, fails"
+# Check that CREATE/DROP INDEX is re-execution friendly.
+# 
+--disable_warnings
+drop table if exists t3|
+drop procedure if exists proc_bug19733|
+--enable_warnings
+create table t3 (s1 int)|
+
+create procedure proc_bug19733()
+begin
+  declare v int default 0;
+  while v < 100 do
+    create index i on t3 (s1);
+    drop index i on t3;
+    set v = v + 1;
+  end while;
+end|
+
+call proc_bug19733()|
+call proc_bug19733()|
+call proc_bug19733()|
+
+drop procedure proc_bug19733|
+drop table t3|
+
 --echo End of 5.0 tests
 
 
diff --git a/sql/ha_ndbcluster.cc b/sql/ha_ndbcluster.cc
index 0f580c833a9..f0ae4bae3a2 100644
--- a/sql/ha_ndbcluster.cc
+++ b/sql/ha_ndbcluster.cc
@@ -6111,7 +6111,7 @@ ndb_get_table_statistics(ha_ndbcluster* file, bool report_error, Ndb* ndb,
 retry:
     if(report_error)
     {
-      if (file)
+      if (file && pTrans)
       {
         reterr= file->ndb_err(pTrans);
       }
diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h
index 534d42e1c17..8d0f2a4d6bf 100644
--- a/sql/mysql_priv.h
+++ b/sql/mysql_priv.h
@@ -773,17 +773,15 @@ int prepare_create_field(create_field *sql_field,
 			 uint table_flags);
 bool mysql_create_table(THD *thd,const char *db, const char *table_name,
                         HA_CREATE_INFO *create_info,
-                        List<create_field> &fields, List<Key> &keys,
+                        Alter_info *alter_info,
                         bool tmp_table, uint select_field_count);
 
 bool mysql_alter_table(THD *thd, char *new_db, char *new_name,
                        HA_CREATE_INFO *create_info,
                        TABLE_LIST *table_list,
-                       List<create_field> &fields,
-                       List<Key> &keys,
-                       uint order_num, ORDER *order, bool ignore,
-                       ALTER_INFO *alter_info, bool do_send_ok);
-bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list, bool do_send_ok);
+                       Alter_info *alter_info,
+                       uint order_num, ORDER *order, bool ignore);
+bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list);
 bool mysql_create_like_table(THD *thd, TABLE_LIST *table,
                              HA_CREATE_INFO *create_info,
                              Table_ident *src_table);
@@ -792,9 +790,6 @@ bool mysql_rename_table(enum db_type base,
 			const char * old_name,
 			const char *new_db,
 			const char * new_name);
-bool mysql_create_index(THD *thd, TABLE_LIST *table_list, List<Key> &keys);
-bool mysql_drop_index(THD *thd, TABLE_LIST *table_list,
-                      ALTER_INFO *alter_info);
 bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
                           Item **conds, uint order_num, ORDER *order);
 int mysql_update(THD *thd,TABLE_LIST *tables,List<Item> &fields,
@@ -896,7 +891,8 @@ int get_quote_char_for_identifier(THD *thd, const char *name, uint length);
 void mysqld_list_fields(THD *thd,TABLE_LIST *table, const char *wild);
 int mysqld_dump_create_info(THD *thd, TABLE_LIST *table_list, int fd);
 bool mysqld_show_create(THD *thd, TABLE_LIST *table_list);
-bool mysqld_show_create_db(THD *thd, char *dbname, HA_CREATE_INFO *create);
+bool mysqld_show_create_db(THD *thd, char *dbname,
+                           const HA_CREATE_INFO *create);
 
 void mysqld_list_processes(THD *thd,const char *user,bool verbose);
 int mysqld_show_status(THD *thd);
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index b59962a5005..f107569c3cb 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -5466,6 +5466,11 @@ log and this option does nothing anymore.",
    0, 0, 0, 0, 0},
   {"use-symbolic-links", 's', "Enable symbolic link support. Deprecated option; use --symbolic-links instead.",
    (gptr*) &my_use_symdir, (gptr*) &my_use_symdir, 0, GET_BOOL, NO_ARG,
+   /*
+     The system call realpath() produces warnings under valgrind and
+     purify. These are not suppressed: instead we disable symlinks
+     option if compiled with valgrind support. 
+   */
    IF_PURIFY(0,1), 0, 0, 0, 0, 0},
   {"user", 'u', "Run mysqld daemon as user.", 0, 0, 0, GET_STR, REQUIRED_ARG,
    0, 0, 0, 0, 0, 0},
diff --git a/sql/sql_class.h b/sql/sql_class.h
index d74158ec07c..05034ebd573 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -1839,21 +1839,22 @@ class select_insert :public select_result_interceptor {
 class select_create: public select_insert {
   ORDER *group;
   TABLE_LIST *create_table;
-  List<create_field> *extra_fields;
-  List<Key> *keys;
   HA_CREATE_INFO *create_info;
+  Alter_info *alter_info;
   MYSQL_LOCK *lock;
   Field **field;
 public:
-  select_create (TABLE_LIST *table,
-		 HA_CREATE_INFO *create_info_par,
-		 List<create_field> &fields_par,
-		 List<Key> &keys_par,
-		 List<Item> &select_fields,enum_duplicates duplic, bool ignore)
-    :select_insert (NULL, NULL, &select_fields, 0, 0, duplic, ignore), create_table(table),
-    extra_fields(&fields_par),keys(&keys_par), create_info(create_info_par),
+  select_create(TABLE_LIST *table,
+                HA_CREATE_INFO *create_info_arg,
+                Alter_info *alter_info_arg,
+                List<Item> &select_fields,
+                enum_duplicates duplic, bool ignore)
+    :select_insert(NULL, NULL, &select_fields, 0, 0, duplic, ignore),
+    create_table(table),
+    create_info(create_info_arg),
+    alter_info(alter_info_arg),
     lock(0)
-    {}
+  {}
   int prepare(List<Item> &list, SELECT_LEX_UNIT *u);
   void store_values(List<Item> &values);
   void send_error(uint errcode,const char *err);
diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc
index be6707c80a9..c60d3c307d0 100644
--- a/sql/sql_insert.cc
+++ b/sql/sql_insert.cc
@@ -2616,11 +2616,11 @@ bool select_insert::send_eof()
                           temporary table flag)
       create_table in     Pointer to TABLE_LIST object providing database
                           and name for table to be created or to be open
-      extra_fields in/out Initial list of fields for table to be created
-      keys         in     List of keys for table to be created
+      alter_info   in/out Initial list of columns and indexes for the table
+                          to be created
       items        in     List of items which should be used to produce rest
                           of fields for the table (corresponding fields will
-                          be added to the end of 'extra_fields' list)
+                          be added to the end of alter_info->create_list)
       lock         out    Pointer to the MYSQL_LOCK object for table created
                           (open) will be returned in this parameter. Since
                           this table is not included in THD::lock caller is
@@ -2642,8 +2642,8 @@ bool select_insert::send_eof()
 
 static TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
                                       TABLE_LIST *create_table,
-                                      List<create_field> *extra_fields,
-                                      List<Key> *keys, List<Item> *items,
+                                      Alter_info *alter_info,
+                                      List<Item> *items,
                                       MYSQL_LOCK **lock)
 {
   TABLE tmp_table;		// Used during 'create_field()'
@@ -2682,7 +2682,7 @@ static TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
       DBUG_RETURN(0);
     if (item->maybe_null)
       cr_field->flags &= ~NOT_NULL_FLAG;
-    extra_fields->push_back(cr_field);
+    alter_info->create_list.push_back(cr_field);
   }
   /*
     create and lock table
@@ -2703,8 +2703,7 @@ static TABLE *create_table_from_items(THD *thd, HA_CREATE_INFO *create_info,
   {
     tmp_disable_binlog(thd);
     if (!mysql_create_table(thd, create_table->db, create_table->table_name,
-                            create_info, *extra_fields, *keys, 0,
-                            select_field_count))
+                            create_info, alter_info, 0, select_field_count))
     {
       /*
         If we are here in prelocked mode we either create temporary table
@@ -2760,7 +2759,7 @@ select_create::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
 
   unit= u;
   table= create_table_from_items(thd, create_info, create_table,
-				 extra_fields, keys, &values, &lock);
+                                 alter_info, &values, &lock);
   if (!table)
     DBUG_RETURN(-1);				// abort() deletes table
 
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index 986cb4760de..f14856e23fa 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -1054,6 +1054,17 @@ int MYSQLlex(void *arg, void *yythd)
 }
 
 
+Alter_info::Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root)
+  :drop_list(rhs.drop_list, mem_root),
+  alter_list(rhs.alter_list, mem_root),
+  key_list(rhs.key_list, mem_root),
+  create_list(rhs.create_list, mem_root),
+  flags(rhs.flags),
+  keys_onoff(rhs.keys_onoff),
+  tablespace_op(rhs.tablespace_op)
+{}
+
+
 /*
   Skip comment in the end of statement.
 
diff --git a/sql/sql_lex.h b/sql/sql_lex.h
index a7b162c6062..5731e009cb4 100644
--- a/sql/sql_lex.h
+++ b/sql/sql_lex.h
@@ -686,18 +686,58 @@ typedef class st_select_lex SELECT_LEX;
 #define ALTER_CONVERT          1024
 #define ALTER_FORCE		2048
 
-typedef struct st_alter_info
+/**
+  @brief Parsing data for CREATE or ALTER TABLE.
+
+  This structure contains a list of columns or indexes to be created,
+  altered or dropped.
+*/
+
+class Alter_info
 {
+public:
   List<Alter_drop>            drop_list;
   List<Alter_column>          alter_list;
+  List<Key>	              key_list;
+  List<create_field>          create_list;
   uint                        flags;
   enum enum_enable_or_disable keys_onoff;
   enum tablespace_op_type     tablespace_op;
 
-  st_alter_info(){clear();}
-  void clear(){keys_onoff= LEAVE_AS_IS;tablespace_op= NO_TABLESPACE_OP;}
-  void reset(){drop_list.empty();alter_list.empty();clear();}
-} ALTER_INFO;
+  Alter_info() :
+    flags(0),
+    keys_onoff(LEAVE_AS_IS),
+    tablespace_op(NO_TABLESPACE_OP)
+  {}
+
+  void reset()
+  {
+    drop_list.empty();
+    alter_list.empty();
+    key_list.empty();
+    create_list.empty();
+    flags= 0;
+    keys_onoff= LEAVE_AS_IS;
+    tablespace_op= NO_TABLESPACE_OP;
+  }
+  /**
+    Construct a copy of this object to be used for mysql_alter_table
+    and mysql_create_table. Historically, these two functions modify
+    their Alter_info arguments. This behaviour breaks re-execution of
+    prepared statements and stored procedures and is compensated by
+    always supplying a copy of Alter_info to these functions.
+    The constructed copy still shares key Key, Alter_drop, create_field
+    and Alter_column elements of the lists - these structures are not
+    modified and thus are not copied.
+
+    @note You need to use check thd->is_fatal_error for out
+    of memory condition after calling this function.
+  */
+  Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root);
+private:
+  Alter_info &operator=(const Alter_info &rhs); // not implemented
+  Alter_info(const Alter_info &rhs);            // not implemented
+};
 
 struct st_sp_chistics
 {
@@ -883,8 +923,6 @@ typedef struct st_lex : public Query_tables_list
   List<String>	      interval_list;
   List<LEX_USER>      users_list;
   List<LEX_COLUMN>    columns;
-  List<Key>	      key_list;
-  List<create_field>  create_list;
   List<Item>	      *insert_list,field_list,value_list,update_list;
   List<List_item>     many_values;
   List<set_var_base>  var_list;
@@ -977,7 +1015,7 @@ typedef struct st_lex : public Query_tables_list
   bool safe_to_cache_query;
   bool subqueries, ignore;
   st_parsing_options parsing_options;
-  ALTER_INFO alter_info;
+  Alter_info alter_info;
   /* Prepared statements SQL syntax:*/
   LEX_STRING prepared_stmt_name; /* Statement name (in all queries) */
   /*
diff --git a/sql/sql_list.h b/sql/sql_list.h
index 1f2d7841f8a..d00a4598af5 100644
--- a/sql/sql_list.h
+++ b/sql/sql_list.h
@@ -61,21 +61,24 @@ public:
   pointer.
 */
 
-class list_node :public Sql_alloc
+
+/**
+  list_node - a node of a single-linked list.
+  @note We never call a destructor for instances of this class.
+*/
+
+struct list_node :public Sql_alloc
 {
-public:
   list_node *next;
   void *info;
   list_node(void *info_par,list_node *next_par)
     :next(next_par),info(info_par)
-    {}
+  {}
   list_node()					/* For end_of_list */
-    {
-      info=0;
-      next= this;
-    }
-  friend class base_list;
-  friend class base_list_iterator;
+  {
+    info= 0;
+    next= this;
+  }
 };
 
 
@@ -91,12 +94,57 @@ public:
 
   inline void empty() { elements=0; first= &end_of_list; last=&first;}
   inline base_list() { empty(); }
+  /**
+    This is a shallow copy constructor that implicitly passes the ownership
+    from the source list to the new instance. The old instance is not
+    updated, so both objects end up sharing the same nodes. If one of
+    the instances then adds or removes a node, the other becomes out of
+    sync ('last' pointer), while still operational. Some old code uses and
+    relies on this behaviour. This logic is quite tricky: please do not use
+    it in any new code.
+  */
   inline base_list(const base_list &tmp) :Sql_alloc()
   {
     elements= tmp.elements;
     first= tmp.first;
     last= elements ? tmp.last : &first;
   }
+  /**
+    Construct a deep copy of the argument in memory root mem_root.
+    The elements themselves are copied by pointer.
+  */
+  inline base_list(const base_list &rhs, MEM_ROOT *mem_root)
+  {
+    if (rhs.elements)
+    {
+      /*
+        It's okay to allocate an array of nodes at once: we never
+        call a destructor for list_node objects anyway.
+      */
+      first= (list_node*) alloc_root(mem_root,
+                                     sizeof(list_node) * rhs.elements);
+      if (first)
+      {
+        elements= rhs.elements;
+        list_node *dst= first;
+        list_node *src= rhs.first;
+        for (; dst < first + elements - 1; dst++, src= src->next)
+        {
+          dst->info= src->info;
+          dst->next= dst + 1;
+        }
+        /* Copy the last node */
+        dst->info= src->info;
+        dst->next= &end_of_list;
+        /* Setup 'last' member */
+        last= &dst->next;
+        return;
+      }
+    }
+    elements= 0;
+    first= &end_of_list;
+    last= &first;
+  }
   inline base_list(bool error) { }
   inline bool push_back(void *info)
   {
@@ -347,6 +395,8 @@ template <class T> class List :public base_list
 public:
   inline List() :base_list() {}
   inline List(const List<T> &tmp) :base_list(tmp) {}
+  inline List(const List<T> &tmp, MEM_ROOT *mem_root) :
+    base_list(tmp, mem_root) {}
   inline bool push_back(T *a) { return base_list::push_back(a); }
   inline bool push_back(T *a, MEM_ROOT *mem_root)
   { return base_list::push_back(a, mem_root); }
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 007c5edd673..b24148c2f59 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -2894,17 +2894,35 @@ mysql_execute_command(THD *thd)
     // Skip first table, which is the table we are creating
     TABLE_LIST *create_table= lex->unlink_first_table(&link_to_local);
     TABLE_LIST *select_tables= lex->query_tables;
+    /*
+      Code below (especially in mysql_create_table() and select_create
+      methods) may modify HA_CREATE_INFO structure in LEX, so we have to
+      use a copy of this structure to make execution prepared statement-
+      safe. A shallow copy is enough as this code won't modify any memory
+      referenced from this structure.
+    */
+    HA_CREATE_INFO create_info(lex->create_info);
+    Alter_info alter_info(lex->alter_info, thd->mem_root);
+
+    if (thd->is_fatal_error)
+    {
+      /* out of memory when creating a copy of alter_info */
+      res= 1;
+      goto end_with_restore_list;
+    }
 
     if ((res= create_table_precheck(thd, select_tables, create_table)))
       goto end_with_restore_list;
 
+    create_info.alias= create_table->alias;
+
 #ifndef HAVE_READLINK
-    lex->create_info.data_file_name=lex->create_info.index_file_name=0;
+    create_info.data_file_name= create_info.index_file_name= NULL;
 #else
     /* Fix names if symlinked tables */
-    if (append_file_to_dir(thd, &lex->create_info.data_file_name,
+    if (append_file_to_dir(thd, &create_info.data_file_name,
 			   create_table->table_name) ||
-	append_file_to_dir(thd, &lex->create_info.index_file_name,
+	append_file_to_dir(thd, &create_info.index_file_name,
 			   create_table->table_name))
       goto end_with_restore_list;
 #endif
@@ -2912,14 +2930,14 @@ mysql_execute_command(THD *thd)
       If we are using SET CHARSET without DEFAULT, add an implicit
       DEFAULT to not confuse old users. (This may change).
     */
-    if ((lex->create_info.used_fields & 
+    if ((create_info.used_fields &
 	 (HA_CREATE_USED_DEFAULT_CHARSET | HA_CREATE_USED_CHARSET)) ==
 	HA_CREATE_USED_CHARSET)
     {
-      lex->create_info.used_fields&= ~HA_CREATE_USED_CHARSET;
-      lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
-      lex->create_info.default_table_charset= lex->create_info.table_charset;
-      lex->create_info.table_charset= 0;
+      create_info.used_fields&= ~HA_CREATE_USED_CHARSET;
+      create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
+      create_info.default_table_charset= create_info.table_charset;
+      create_info.table_charset= 0;
     }
     /*
       The create-select command will open and read-lock the select table
@@ -2953,7 +2971,7 @@ mysql_execute_command(THD *thd)
           Is table which we are changing used somewhere in other parts
           of query
         */
-        if (!(lex->create_info.options & HA_LEX_CREATE_TMP_TABLE))
+        if (!(create_info.options & HA_LEX_CREATE_TMP_TABLE))
         {
           TABLE_LIST *duplicate;
           if ((duplicate= unique_table(thd, create_table, select_tables)))
@@ -2964,10 +2982,10 @@ mysql_execute_command(THD *thd)
           }
         }
         /* If we create merge table, we have to test tables in merge, too */
-        if (lex->create_info.used_fields & HA_CREATE_USED_UNION)
+        if (create_info.used_fields & HA_CREATE_USED_UNION)
         {
           TABLE_LIST *tab;
-          for (tab= (TABLE_LIST*) lex->create_info.merge_list.first;
+          for (tab= (TABLE_LIST*) create_info.merge_list.first;
                tab;
                tab= tab->next_local)
           {
@@ -2980,14 +2998,16 @@ mysql_execute_command(THD *thd)
             }
           }
         }
-
+        /*
+          select_create is currently not re-execution friendly and
+          needs to be created for every execution of a PS/SP.
+        */
         if ((result= new select_create(create_table,
-				       &lex->create_info,
-				       lex->create_list,
-				       lex->key_list,
-				       select_lex->item_list,
-				       lex->duplicates,
-				       lex->ignore)))
+                                       &create_info,
+                                       &alter_info,
+                                       select_lex->item_list,
+                                       lex->duplicates,
+                                       lex->ignore)))
         {
           /*
             CREATE from SELECT give its SELECT_LEX for SELECT,
@@ -2996,23 +3016,19 @@ mysql_execute_command(THD *thd)
           res= handle_select(thd, lex, result, 0);
           delete result;
         }
-	/* reset for PS */
-	lex->create_list.empty();
-	lex->key_list.empty();
       }
     }
     else
     {
       /* regular create */
       if (lex->name)
-        res= mysql_create_like_table(thd, create_table, &lex->create_info, 
-                                     (Table_ident *)lex->name); 
+        res= mysql_create_like_table(thd, create_table, &create_info,
+                                     (Table_ident *)lex->name);
       else
       {
         res= mysql_create_table(thd, create_table->db,
-				create_table->table_name, &lex->create_info,
-				lex->create_list,
-				lex->key_list, 0, 0);
+                                create_table->table_name, &create_info,
+                                &alter_info, 0, 0);
       }
       if (!res)
 	send_ok(thd);
@@ -3024,16 +3040,49 @@ end_with_restore_list:
     break;
   }
   case SQLCOM_CREATE_INDEX:
+    /* Fall through */
+  case SQLCOM_DROP_INDEX:
+  /*
+    CREATE INDEX and DROP INDEX are implemented by calling ALTER
+    TABLE with proper arguments. This isn't very fast but it
+    should work for most cases.
+
+    In the future ALTER TABLE will notice that only added
+    indexes and create these one by one for the existing table
+    without having to do a full rebuild.
+
+    One should normally create all indexes with CREATE TABLE or
+    ALTER TABLE.
+  */
+  {
+    Alter_info alter_info(lex->alter_info, thd->mem_root);
+    HA_CREATE_INFO create_info;
+
+    if (thd->is_fatal_error) /* out of memory creating a copy of alter_info*/
+      goto error;
+
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_one_table_access(thd, INDEX_ACL, all_tables))
+    if (check_one_table_access(thd, INDEX_ACL, first_table))
       goto error; /* purecov: inspected */
-    thd->enable_slow_log= opt_log_slow_admin_statements;
     if (end_active_trans(thd))
       goto error;
-    else
-      res = mysql_create_index(thd, first_table, lex->key_list);
-    break;
+    /*
+      Currently CREATE INDEX or DROP INDEX cause a full table rebuild
+      and thus classify as slow administrative statements just like
+      ALTER TABLE.
+    */
+    thd->enable_slow_log= opt_log_slow_admin_statements;
 
+    bzero((char*) &create_info, sizeof(create_info));
+    create_info.db_type= DB_TYPE_DEFAULT;
+    create_info.row_type= ROW_TYPE_NOT_USED;
+    create_info.default_table_charset= thd->variables.collation_database;
+
+    res= mysql_alter_table(thd, first_table->db, first_table->table_name,
+                           &create_info, first_table, &alter_info,
+                           0, (ORDER*) 0, 0);
+    break;
+  }
 #ifdef HAVE_REPLICATION
   case SQLCOM_SLAVE_START:
   {
@@ -3074,6 +3123,17 @@ end_with_restore_list:
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
     {
       ulong priv=0;
+      /*
+        Code in mysql_alter_table() may modify its HA_CREATE_INFO argument,
+        so we have to use a copy of this structure to make execution
+        prepared statement- safe. A shallow copy is enough as no memory
+        referenced from this structure will be modified.
+      */
+      HA_CREATE_INFO create_info(lex->create_info);
+      Alter_info alter_info(lex->alter_info, thd->mem_root);
+
+      if (thd->is_fatal_error) /* out of memory creating a copy of alter_info */
+        goto error;
       if (lex->name && (!lex->name[0] || strlen(lex->name) > NAME_LEN))
       {
 	my_error(ER_WRONG_TABLE_NAME, MYF(0), lex->name);
@@ -3088,7 +3148,7 @@ end_with_restore_list:
                        is_schema_db(select_lex->db))||
 	  check_merge_table_access(thd, first_table->db,
 				   (TABLE_LIST *)
-				   lex->create_info.merge_list.first))
+				   create_info.merge_list.first))
 	goto error;				/* purecov: inspected */
       if (grant_option)
       {
@@ -3107,13 +3167,13 @@ end_with_restore_list:
 	}
       }
       /* Don't yet allow changing of symlinks with ALTER TABLE */
-      if (lex->create_info.data_file_name)
+      if (create_info.data_file_name)
         push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, 0,
                      "DATA DIRECTORY option ignored");
-      if (lex->create_info.index_file_name)
+      if (create_info.index_file_name)
         push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, 0,
                      "INDEX DIRECTORY option ignored");
-      lex->create_info.data_file_name=lex->create_info.index_file_name=0;
+      create_info.data_file_name= create_info.index_file_name= NULL;
       /* ALTER TABLE ends previous transaction */
       if (end_active_trans(thd))
 	goto error;
@@ -3127,13 +3187,13 @@ end_with_restore_list:
         }
 
         thd->enable_slow_log= opt_log_slow_admin_statements;
-	res= mysql_alter_table(thd, select_lex->db, lex->name,
-			       &lex->create_info,
-			       first_table, lex->create_list,
-			       lex->key_list,
-			       select_lex->order_list.elements,
+        res= mysql_alter_table(thd, select_lex->db, lex->name,
+                               &create_info,
+                               first_table,
+                               &alter_info,
+                               select_lex->order_list.elements,
                                (ORDER *) select_lex->order_list.first,
-			       lex->ignore, &lex->alter_info, 1);
+                               lex->ignore);
       }
       break;
     }
@@ -3286,7 +3346,7 @@ end_with_restore_list:
       goto error; /* purecov: inspected */
     thd->enable_slow_log= opt_log_slow_admin_statements;
     res= (specialflag & (SPECIAL_SAFE_MODE | SPECIAL_NO_NEW_FUNC)) ?
-      mysql_recreate_table(thd, first_table, 1) :
+      mysql_recreate_table(thd, first_table) :
       mysql_optimize_table(thd, first_table, &lex->check_opt);
     /* ! we write after unlocking the table */
     if (!res && !lex->no_write_to_binlog)
@@ -3602,15 +3662,6 @@ end_with_restore_list:
 			lex->drop_temporary);
   }
   break;
-  case SQLCOM_DROP_INDEX:
-    DBUG_ASSERT(first_table == all_tables && first_table != 0);
-    if (check_one_table_access(thd, INDEX_ACL, all_tables))
-      goto error;				/* purecov: inspected */
-    if (end_active_trans(thd))
-      goto error;
-    else
-      res = mysql_drop_index(thd, first_table, &lex->alter_info);
-    break;
   case SQLCOM_SHOW_PROCESSLIST:
     if (!thd->security_ctx->priv_user[0] &&
         check_global_access(thd,PROCESS_ACL))
@@ -3739,6 +3790,12 @@ end_with_restore_list:
     break;
   case SQLCOM_CREATE_DB:
   {
+    /*
+      As mysql_create_db() may modify HA_CREATE_INFO structure passed to
+      it, we need to use a copy of LEX::create_info to make execution
+      prepared statement- safe.
+    */
+    HA_CREATE_INFO create_info(lex->create_info);
     if (end_active_trans(thd))
     {
       res= -1;
@@ -3766,10 +3823,11 @@ end_with_restore_list:
       break;
     }
 #endif
+
     if (check_access(thd,CREATE_ACL,lex->name,0,1,0,is_schema_db(lex->name)))
       break;
     res= mysql_create_db(thd,(lower_case_table_names == 2 ? alias : lex->name),
-			 &lex->create_info, 0);
+			 &create_info, 0);
     break;
   }
   case SQLCOM_DROP_DB:
@@ -4456,7 +4514,7 @@ create_sp_error:
             goto error;
         }
 
-	my_bool nsok= thd->net.no_send_ok;
+	my_bool save_no_send_ok= thd->net.no_send_ok;
 	thd->net.no_send_ok= TRUE;
 	if (sp->m_flags & sp_head::MULTI_RESULTS)
 	{
@@ -4467,7 +4525,7 @@ create_sp_error:
               back
             */
 	    my_error(ER_SP_BADSELECT, MYF(0), sp->m_qname.str);
-	    thd->net.no_send_ok= nsok;
+	    thd->net.no_send_ok= save_no_send_ok;
 	    goto error;
 	  }
           /*
@@ -4483,7 +4541,7 @@ create_sp_error:
 	if (check_routine_access(thd, EXECUTE_ACL,
 				 sp->m_db.str, sp->m_name.str, TRUE, FALSE))
 	{
-	  thd->net.no_send_ok= nsok;
+	  thd->net.no_send_ok= save_no_send_ok;
 	  goto error;
 	}
 #endif
@@ -4508,7 +4566,7 @@ create_sp_error:
 
 	thd->variables.select_limit= select_limit;
 
-	thd->net.no_send_ok= nsok;
+	thd->net.no_send_ok= save_no_send_ok;
         thd->server_status&= ~bits_to_be_cleared;
 
 	if (!res)
@@ -5917,15 +5975,17 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
   if (type_modifier & PRI_KEY_FLAG)
   {
     lex->col_list.push_back(new key_part_spec(field_name,0));
-    lex->key_list.push_back(new Key(Key::PRIMARY, NullS, HA_KEY_ALG_UNDEF,
-				    0, lex->col_list));
+    lex->alter_info.key_list.push_back(new Key(Key::PRIMARY, NullS,
+                                               HA_KEY_ALG_UNDEF, 0,
+                                               lex->col_list));
     lex->col_list.empty();
   }
   if (type_modifier & (UNIQUE_FLAG | UNIQUE_KEY_FLAG))
   {
     lex->col_list.push_back(new key_part_spec(field_name,0));
-    lex->key_list.push_back(new Key(Key::UNIQUE, NullS, HA_KEY_ALG_UNDEF, 0,
-				    lex->col_list));
+    lex->alter_info.key_list.push_back(new Key(Key::UNIQUE, NullS,
+                                               HA_KEY_ALG_UNDEF, 0,
+                                               lex->col_list));
     lex->col_list.empty();
   }
 
@@ -5988,7 +6048,7 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
                       interval_list, cs, uint_geom_type))
     DBUG_RETURN(1);
 
-  lex->create_list.push_back(new_field);
+  lex->alter_info.create_list.push_back(new_field);
   lex->last_field=new_field;
   DBUG_RETURN(0);
 }
@@ -7016,55 +7076,6 @@ Item * all_any_subquery_creator(Item *left_expr,
 }
 
 
-/*
-  CREATE INDEX and DROP INDEX are implemented by calling ALTER TABLE with
-  the proper arguments.  This isn't very fast but it should work for most
-  cases.
-
-  In the future ALTER TABLE will notice that only added indexes
-  and create these one by one for the existing table without having to do
-  a full rebuild.
-
-  One should normally create all indexes with CREATE TABLE or ALTER TABLE.
-*/
-
-bool mysql_create_index(THD *thd, TABLE_LIST *table_list, List<Key> &keys)
-{
-  List<create_field> fields;
-  ALTER_INFO alter_info;
-  alter_info.flags= ALTER_ADD_INDEX;
-  HA_CREATE_INFO create_info;
-  DBUG_ENTER("mysql_create_index");
-  bzero((char*) &create_info,sizeof(create_info));
-  create_info.db_type=DB_TYPE_DEFAULT;
-  create_info.default_table_charset= thd->variables.collation_database;
-  create_info.row_type= ROW_TYPE_NOT_USED;
-  DBUG_RETURN(mysql_alter_table(thd,table_list->db,table_list->table_name,
-				&create_info, table_list,
-				fields, keys, 0, (ORDER*)0,
-                                0, &alter_info, 1));
-}
-
-
-bool mysql_drop_index(THD *thd, TABLE_LIST *table_list, ALTER_INFO *alter_info)
-{
-  List<create_field> fields;
-  List<Key> keys;
-  HA_CREATE_INFO create_info;
-  DBUG_ENTER("mysql_drop_index");
-  bzero((char*) &create_info,sizeof(create_info));
-  create_info.db_type=DB_TYPE_DEFAULT;
-  create_info.default_table_charset= thd->variables.collation_database;
-  create_info.row_type= ROW_TYPE_NOT_USED;
-  alter_info->clear();
-  alter_info->flags= ALTER_DROP_INDEX;
-  DBUG_RETURN(mysql_alter_table(thd,table_list->db,table_list->table_name,
-				&create_info, table_list,
-				fields, keys, 0, (ORDER*)0,
-                                0, alter_info, 1));
-}
-
-
 /*
   Multi update query pre-check
 
@@ -7363,7 +7374,6 @@ bool create_table_precheck(THD *thd, TABLE_LIST *tables,
 
   want_priv= ((lex->create_info.options & HA_LEX_CREATE_TMP_TABLE) ?
               CREATE_TMP_ACL : CREATE_ACL);
-  lex->create_info.alias= create_table->alias;
   if (check_access(thd, want_priv, create_table->db,
 		   &create_table->grant.privilege, 0, 0,
                    test(create_table->schema_table)) ||
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index abb949ae473..d62032c2b44 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -10434,6 +10434,7 @@ evaluate_join_record(JOIN *join, JOIN_TAB *join_tab,
     */
     join->examined_rows++;
     join->thd->row_count++;
+    join_tab->read_record.file->unlock_row();
   }
   return NESTED_LOOP_OK;
 }
diff --git a/sql/sql_show.cc b/sql/sql_show.cc
index af9e3d44186..21a5ead90af 100644
--- a/sql/sql_show.cc
+++ b/sql/sql_show.cc
@@ -460,7 +460,7 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
 }
 
 bool mysqld_show_create_db(THD *thd, char *dbname,
-                           HA_CREATE_INFO *create_info)
+                           const HA_CREATE_INFO *create_info)
 {
   Security_context *sctx= thd->security_ctx;
   char buff[2048];
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index b3bd3182a59..4f5f4c29854 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -645,8 +645,7 @@ int prepare_create_field(create_field *sql_field,
     mysql_prepare_table()
     thd			Thread object
     create_info		Create information (like MAX_ROWS)
-    fields		List of fields to create
-    keys		List of keys to create
+    alter_info          List of columns and indexes to create
 
   DESCRIPTION
     Prepares the table and key structures for table creation.
@@ -660,8 +659,8 @@ int prepare_create_field(create_field *sql_field,
 */
 
 static int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
-                               List<create_field> *fields,
-                               List<Key> *keys, bool tmp_table,
+                               Alter_info *alter_info,
+                               bool tmp_table,
                                uint *db_options,
                                handler *file, KEY **key_info_buffer,
                                uint *key_count, int select_field_count)
@@ -675,11 +674,12 @@ static int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
   int		timestamps= 0, timestamps_with_niladic= 0;
   int		field_no,dup_no;
   int		select_field_pos,auto_increment=0;
-  List_iterator<create_field> it(*fields),it2(*fields);
+  List_iterator<create_field> it(alter_info->create_list);
+  List_iterator<create_field> it2(alter_info->create_list);
   uint total_uneven_bit_length= 0;
   DBUG_ENTER("mysql_prepare_table");
 
-  select_field_pos= fields->elements - select_field_count;
+  select_field_pos= alter_info->create_list.elements - select_field_count;
   null_fields=blob_columns=0;
   create_info->varchar= 0;
   max_key_length= file->max_key_length();
@@ -1004,7 +1004,8 @@ static int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
 
   /* Create keys */
 
-  List_iterator<Key> key_iterator(*keys), key_iterator2(*keys);
+  List_iterator<Key> key_iterator(alter_info->key_list);
+  List_iterator<Key> key_iterator2(alter_info->key_list);
   uint key_parts=0, fk_key_count=0;
   bool primary_key=0,unique_key=0;
   Key *key, *key2;
@@ -1563,14 +1564,13 @@ void sp_prepare_create_field(THD *thd, create_field *sql_field)
 
   SYNOPSIS
     mysql_create_table()
-    thd			Thread object
-    db			Database
-    table_name		Table name
-    create_info		Create information (like MAX_ROWS)
-    fields		List of fields to create
-    keys		List of keys to create
-    internal_tmp_table  Set to 1 if this is an internal temporary table
-			(From ALTER TABLE)
+    thd                  Thread object
+    db                   Database
+    table_name           Table name
+    create_info [in/out] Create information (like MAX_ROWS)
+    alter_info  [in/out] List of columns and indexes to create
+    internal_tmp_table   Set to 1 if this is an internal temporary table
+                         (From ALTER TABLE)
 
   DESCRIPTION
     If one creates a temporary table, this is automatically opened
@@ -1580,6 +1580,11 @@ void sp_prepare_create_field(THD *thd, create_field *sql_field)
     select_field_count is also used for CREATE ... SELECT,
     and must be zero for standard create of table.
 
+    Note that structures passed as 'create_info' and 'alter_info' parameters
+    may be modified by this function. It is responsibility of the caller to
+    make a copy of create_info in order to provide correct execution in
+    prepared statements/stored routines.
+
   RETURN VALUES
     FALSE OK
     TRUE  error
@@ -1587,8 +1592,8 @@ void sp_prepare_create_field(THD *thd, create_field *sql_field)
 
 bool mysql_create_table(THD *thd,const char *db, const char *table_name,
                         HA_CREATE_INFO *create_info,
-                        List<create_field> &fields,
-                        List<Key> &keys,bool internal_tmp_table,
+                        Alter_info *alter_info,
+                        bool internal_tmp_table,
                         uint select_field_count)
 {
   char		path[FN_REFLEN];
@@ -1600,7 +1605,7 @@ bool mysql_create_table(THD *thd,const char *db, const char *table_name,
   DBUG_ENTER("mysql_create_table");
 
   /* Check for duplicate fields and check type of table to create */
-  if (!fields.elements)
+  if (!alter_info->create_list.elements)
   {
     my_message(ER_TABLE_MUST_HAVE_COLUMNS, ER(ER_TABLE_MUST_HAVE_COLUMNS),
                MYF(0));
@@ -1644,10 +1649,10 @@ bool mysql_create_table(THD *thd,const char *db, const char *table_name,
     create_info->default_table_charset= db_info.default_table_charset;
   }
 
-  if (mysql_prepare_table(thd, create_info, &fields,
-			  &keys, internal_tmp_table, &db_options, file,
-			  &key_info_buffer, &key_count,
-			  select_field_count))
+  if (mysql_prepare_table(thd, create_info, alter_info, internal_tmp_table,
+                          &db_options, file,
+                          &key_info_buffer, &key_count,
+                          select_field_count))
     DBUG_RETURN(TRUE);
 
       /* Check if table exists */
@@ -1737,8 +1742,8 @@ bool mysql_create_table(THD *thd,const char *db, const char *table_name,
   create_info->table_options=db_options;
 
   if (rea_create_table(thd, path, db, table_name,
-                       create_info, fields, key_count,
-		       key_info_buffer))
+                       create_info, alter_info->create_list,
+                       key_count, key_info_buffer))
     goto end;
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
@@ -2323,9 +2328,12 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
           (table->table->file->ha_check_for_upgrade(check_opt) ==
            HA_ADMIN_NEEDS_ALTER))
       {
+        my_bool save_no_send_ok= thd->net.no_send_ok;
         close_thread_tables(thd);
         tmp_disable_binlog(thd); // binlogging is done by caller if wanted
-        result_code= mysql_recreate_table(thd, table, 0);
+        thd->net.no_send_ok= TRUE;
+        result_code= mysql_recreate_table(thd, table);
+        thd->net.no_send_ok= save_no_send_ok;
         reenable_binlog(thd);
         goto send_result;
       }
@@ -2404,6 +2412,7 @@ send_result_message:
 
     case HA_ADMIN_TRY_ALTER:
     {
+      my_bool save_no_send_ok= thd->net.no_send_ok;
       /*
         This is currently used only by InnoDB. ha_innobase::optimize() answers
         "try with alter", so here we close the table, do an ALTER TABLE,
@@ -2414,7 +2423,9 @@ send_result_message:
                  *save_next_global= table->next_global;
       table->next_local= table->next_global= 0;
       tmp_disable_binlog(thd); // binlogging is done by caller if wanted
-      result_code= mysql_recreate_table(thd, table, 0);
+      thd->net.no_send_ok= TRUE;
+      result_code= mysql_recreate_table(thd, table);
+      thd->net.no_send_ok= save_no_send_ok;
       reenable_binlog(thd);
       close_thread_tables(thd);
       if (!result_code) // recreation went ok
@@ -2984,14 +2995,20 @@ bool alter_table_manage_keys(TABLE *table, int indexes_were_disabled,
 
 /*
   Alter table
+
+
+  NOTE
+    The structures passed as 'create_info' and 'alter_info' parameters may
+    be modified by this function. It is responsibility of the caller to make
+    a copy of create_info in order to provide correct execution in prepared
+    statements/stored routines.
 */
 
 bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
                        HA_CREATE_INFO *create_info,
                        TABLE_LIST *table_list,
-                       List<create_field> &fields, List<Key> &keys,
-                       uint order_num, ORDER *order, bool ignore,
-                       ALTER_INFO *alter_info, bool do_send_ok)
+                       Alter_info *alter_info,
+                       uint order_num, ORDER *order, bool ignore)
 {
   TABLE *table,*new_table=0;
   int error;
@@ -3212,8 +3229,7 @@ view_err:
 	Query_log_event qinfo(thd, thd->query, thd->query_length, FALSE, FALSE);
 	mysql_bin_log.write(&qinfo);
       }
-      if (do_send_ok)
-        send_ok(thd);
+      send_ok(thd);
     }
     else if (error > 0)
     {
@@ -3240,10 +3256,9 @@ view_err:
 
   restore_record(table, s->default_values);     // Empty record for DEFAULT
   List_iterator<Alter_drop> drop_it(alter_info->drop_list);
-  List_iterator<create_field> def_it(fields);
+  List_iterator<create_field> def_it(alter_info->create_list);
   List_iterator<Alter_column> alter_it(alter_info->alter_list);
-  List<create_field> create_list;		// Add new fields here
-  List<Key> key_list;				// Add new keys here
+  Alter_info new_info;                   // Add new columns and indexes here
   create_field *def;
 
   /*
@@ -3291,13 +3306,13 @@ view_err:
       def->field=field;
       if (!def->after)
       {
-	create_list.push_back(def);
+	new_info.create_list.push_back(def);
 	def_it.remove();
       }
     }
     else
     {						// Use old field value
-      create_list.push_back(def=new create_field(field,field));
+      new_info.create_list.push_back(def= new create_field(field, field));
       alter_it.rewind();			// Change default if ALTER
       Alter_column *alter;
       while ((alter=alter_it++))
@@ -3321,7 +3336,7 @@ view_err:
     }
   }
   def_it.rewind();
-  List_iterator<create_field> find_it(create_list);
+  List_iterator<create_field> find_it(new_info.create_list);
   while ((def=def_it++))			// Add new columns
   {
     if (def->change && ! def->field)
@@ -3330,9 +3345,9 @@ view_err:
       DBUG_RETURN(TRUE);
     }
     if (!def->after)
-      create_list.push_back(def);
+      new_info.create_list.push_back(def);
     else if (def->after == first_keyword)
-      create_list.push_front(def);
+      new_info.create_list.push_front(def);
     else
     {
       create_field *find;
@@ -3356,7 +3371,7 @@ view_err:
              alter_info->alter_list.head()->name, table_name);
     DBUG_RETURN(TRUE);
   }
-  if (!create_list.elements)
+  if (!new_info.create_list.elements)
   {
     my_message(ER_CANT_REMOVE_ALL_FIELDS, ER(ER_CANT_REMOVE_ALL_FIELDS),
                MYF(0));
@@ -3368,8 +3383,8 @@ view_err:
     for which some fields exists.
   */
 
-  List_iterator<Key> key_it(keys);
-  List_iterator<create_field> field_it(create_list);
+  List_iterator<Key> key_it(alter_info->key_list);
+  List_iterator<create_field> field_it(new_info.create_list);
   List<key_part_spec> key_parts;
 
   KEY *key_info=table->key_info;
@@ -3441,24 +3456,37 @@ view_err:
 					    key_part_length));
     }
     if (key_parts.elements)
-      key_list.push_back(new Key(key_info->flags & HA_SPATIAL ? Key::SPATIAL :
-				 (key_info->flags & HA_NOSAME ?
-				 (!my_strcasecmp(system_charset_info,
-						 key_name, primary_key_name) ?
-				  Key::PRIMARY	: Key::UNIQUE) :
-				  (key_info->flags & HA_FULLTEXT ?
-				   Key::FULLTEXT : Key::MULTIPLE)),
-				 key_name,
-				 key_info->algorithm,
-                                 test(key_info->flags & HA_GENERATED_KEY),
-				 key_parts));
+    {
+      Key *key;
+      enum Key::Keytype key_type;
+
+      if (key_info->flags & HA_SPATIAL)
+        key_type= Key::SPATIAL;
+      else if (key_info->flags & HA_NOSAME)
+      {
+        if (! my_strcasecmp(system_charset_info, key_name, primary_key_name))
+          key_type= Key::PRIMARY;
+        else
+          key_type= Key::UNIQUE;
+      }
+      else if (key_info->flags & HA_FULLTEXT)
+        key_type= Key::FULLTEXT;
+      else
+        key_type= Key::MULTIPLE;
+
+      key= new Key(key_type, key_name,
+                   key_info->algorithm,
+                   test(key_info->flags & HA_GENERATED_KEY),
+                   key_parts);
+      new_info.key_list.push_back(key);
+    }
   }
   {
     Key *key;
     while ((key=key_it++))			// Add new keys
     {
       if (key->type != Key::FOREIGN_KEY)
-	key_list.push_back(key);
+        new_info.key_list.push_back(key);
       if (key->name &&
 	  !my_strcasecmp(system_charset_info,key->name,primary_key_name))
       {
@@ -3593,7 +3621,7 @@ view_err:
   {
     tmp_disable_binlog(thd);
     error= mysql_create_table(thd, new_db, tmp_name,
-                              create_info,create_list,key_list,1,0);
+                              create_info, &new_info, 1, 0);
     reenable_binlog(thd);
     if (error)
       DBUG_RETURN(error);
@@ -3634,9 +3662,9 @@ view_err:
   {
     new_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
     new_table->next_number_field=new_table->found_next_number_field;
-    error=copy_data_between_tables(table, new_table, create_list, ignore,
-				   order_num, order, &copied, &deleted,
-                                   alter_info->keys_onoff);
+    error= copy_data_between_tables(table, new_table, new_info.create_list,
+                                    ignore, order_num, order,
+                                    &copied, &deleted, alter_info->keys_onoff);
   }
   else if (!new_table)
   {
@@ -3860,8 +3888,7 @@ end_temporary:
   my_snprintf(tmp_name, sizeof(tmp_name), ER(ER_INSERT_INFO),
 	      (ulong) (copied + deleted), (ulong) deleted,
 	      (ulong) thd->cuted_fields);
-  if (do_send_ok)
-    send_ok(thd,copied+deleted,0L,tmp_name);
+  send_ok(thd, copied + deleted, 0L, tmp_name);
   thd->some_tables_deleted=0;
   DBUG_RETURN(FALSE);
 
@@ -4060,31 +4087,26 @@ copy_data_between_tables(TABLE *from,TABLE *to,
     mysql_recreate_table()
     thd			Thread handler
     tables		Tables to recreate
-    do_send_ok          If we should send_ok() or leave it to caller
 
  RETURN
     Like mysql_alter_table().
 */
-bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list,
-                          bool do_send_ok)
+bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list)
 {
-  DBUG_ENTER("mysql_recreate_table");
-  LEX *lex= thd->lex;
   HA_CREATE_INFO create_info;
-  lex->create_list.empty();
-  lex->key_list.empty();
-  lex->col_list.empty();
-  lex->alter_info.reset();
-  bzero((char*) &create_info,sizeof(create_info));
+  Alter_info alter_info;
+
+  DBUG_ENTER("mysql_recreate_table");
+
+  bzero((char*) &create_info, sizeof(create_info));
   create_info.db_type=DB_TYPE_DEFAULT;
   create_info.row_type=ROW_TYPE_NOT_USED;
   create_info.default_table_charset=default_charset_info;
   /* Force alter table to recreate table */
-  lex->alter_info.flags= ALTER_CHANGE_COLUMN;
+  alter_info.flags= ALTER_CHANGE_COLUMN;
   DBUG_RETURN(mysql_alter_table(thd, NullS, NullS, &create_info,
-                                table_list, lex->create_list,
-                                lex->key_list, 0, (ORDER *) 0,
-                                0, &lex->alter_info, do_send_ok));
+                                table_list, &alter_info,
+                                0, (ORDER *) 0, 0));
 }
 
 
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 1fa23beb2f7..92640ea58d6 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -1352,8 +1352,7 @@ create:
 						  TL_READ_NO_INSERT:
 						  TL_READ)))
 	    YYABORT;
-	  lex->create_list.empty();
-	  lex->key_list.empty();
+          lex->alter_info.reset();
 	  lex->col_list.empty();
 	  lex->change=NullS;
 	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
@@ -1371,16 +1370,17 @@ create:
 	    if (!lex->current_select->add_table_to_list(lex->thd, $7, NULL,
 							TL_OPTION_UPDATING))
 	      YYABORT;
-	    lex->create_list.empty();
-	    lex->key_list.empty();
+            lex->alter_info.reset();
+            lex->alter_info.flags= ALTER_ADD_INDEX;
 	    lex->col_list.empty();
 	    lex->change=NullS;
 	  }
 	   '(' key_list ')'
 	  {
 	    LEX *lex=Lex;
+            Key *key= new Key($2, $4.str, $5, 0, lex->col_list);
 
-	    lex->key_list.push_back(new Key($2,$4.str, $5, 0, lex->col_list));
+            lex->alter_info.key_list.push_back(key);
 	    lex->col_list.empty();
 	  }
 	| CREATE DATABASE opt_if_not_exists ident
@@ -2920,29 +2920,34 @@ key_def:
 	key_type opt_ident key_alg '(' key_list ')'
 	  {
 	    LEX *lex=Lex;
-	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list));
+            Key *key= new Key($1, $2, $3, 0, lex->col_list);
+            lex->alter_info.key_list.push_back(key);
+
 	    lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
 	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
 	  {
 	    LEX *lex=Lex;
 	    const char *key_name= $3 ? $3:$1;
-	    lex->key_list.push_back(new Key($2, key_name, $4, 0,
-				    lex->col_list));
+            Key *key= new Key($2, key_name, $4, 0, lex->col_list);
+            lex->alter_info.key_list.push_back(key);
 	    lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
 	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
 	  {
 	    LEX *lex=Lex;
-	    lex->key_list.push_back(new foreign_key($4 ? $4:$1, lex->col_list,
-				    $8,
-				    lex->ref_list,
-				    lex->fk_delete_opt,
-				    lex->fk_update_opt,
-				    lex->fk_match_option));
-	    lex->key_list.push_back(new Key(Key::MULTIPLE, $4 ? $4 : $1,
-					    HA_KEY_ALG_UNDEF, 1,
-					    lex->col_list));
+            const char *key_name= $4 ? $4 : $1;
+            Key *key= new foreign_key(key_name, lex->col_list,
+                                      $8,
+                                      lex->ref_list,
+                                      lex->fk_delete_opt,
+                                      lex->fk_update_opt,
+                                      lex->fk_match_option);
+            lex->alter_info.key_list.push_back(key);
+            key= new Key(Key::MULTIPLE, key_name,
+                         HA_KEY_ALG_UNDEF, 1,
+                         lex->col_list);
+            lex->alter_info.key_list.push_back(key);
 	    lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
 	| constraint opt_check_constraint
@@ -3484,8 +3489,6 @@ alter:
 	  if (!lex->select_lex.add_table_to_list(thd, $4, NULL,
 						 TL_OPTION_UPDATING))
 	    YYABORT;
-	  lex->create_list.empty();
-	  lex->key_list.empty();
 	  lex->col_list.empty();
           lex->select_lex.init_order();
 	  lex->select_lex.db=
@@ -3495,8 +3498,7 @@ alter:
 	  lex->create_info.db_type= DB_TYPE_DEFAULT;
 	  lex->create_info.default_table_charset= NULL;
 	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
-	  lex->alter_info.reset();
-	  lex->alter_info.flags= 0;
+          lex->alter_info.reset();
 	}
 	alter_list
 	{}
@@ -6254,7 +6256,8 @@ drop:
 	  {
 	     LEX *lex=Lex;
 	     lex->sql_command= SQLCOM_DROP_INDEX;
-	     lex->alter_info.drop_list.empty();
+             lex->alter_info.reset();
+             lex->alter_info.flags= ALTER_DROP_INDEX;
 	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                 $3.str));
 	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,