Merge bk-internal.mysql.com:/home/bk/mysql-5.1-runtime

into  mockturtle.local:/home/dlenev/src/mysql-5.1-like-2


sql/sql_parse.cc:
  Auto merged

mysql-test/r/create_select-big.result → mysql-test/r/create-big.result

@@ -162,3 +162,86 @@ t1	CREATE TABLE `t1` (
   `j` int(11) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1, t2, t3;
+drop table if exists t1,t2;
+create table t1 (i int);
+set session debug="+d,sleep_create_like_before_check_if_exists";
+reset master;
+create table t2 like t1;;
+insert into t1 values (1);
+drop table t1;
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `i` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t2;
+show binlog events in 'master-bin.000001' from 106;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	#	Query	1	#	use `test`; insert into t1 values (1)
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+create table t1 (i int);
+set session debug="-d,sleep_create_like_before_check_if_exists:+d,sleep_create_like_before_copy";
+create table t2 like t1;;
+create table if not exists t2 (j int);
+Warnings:
+Note	1050	Table 't2' already exists
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `i` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t2;
+reset master;
+create table t2 like t1;;
+drop table t1;
+drop table t2;
+show binlog events in 'master-bin.000001' from 106;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+create table t1 (i int);
+set session debug="-d,sleep_create_like_before_copy:+d,sleep_create_like_before_ha_create";
+reset master;
+create table t2 like t1;;
+insert into t2 values (1);
+drop table t2;
+create table t2 like t1;;
+drop table t2;
+create table t2 like t1;;
+drop table t1;
+drop table t2;
+show binlog events in 'master-bin.000001' from 106;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; insert into t2 values (1)
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+create table t1 (i int);
+set session debug="-d,sleep_create_like_before_ha_create:+d,sleep_create_like_before_binlogging";
+reset master;
+create table t2 like t1;;
+insert into t2 values (1);
+drop table t2;
+create table t2 like t1;;
+drop table t2;
+create table t2 like t1;;
+drop table t1;
+drop table t2;
+show binlog events in 'master-bin.000001' from 106;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; insert into t2 values (1)
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+master-bin.000001	#	Query	1	#	use `test`; create table t2 like t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t1
+master-bin.000001	#	Query	1	#	use `test`; drop table t2
+set session debug="-d,sleep_create_like_before_binlogging";

mysql-test/r/create.result

@@ -371,7 +371,7 @@ ERROR 42S01: Table 't3' already exists
 create table non_existing_database.t1 like t1;
 ERROR 42000: Unknown database 'non_existing_database'
 create table t3 like non_existing_table;
-ERROR 42S02: Unknown table 'non_existing_table'
+ERROR 42S02: Table 'test.non_existing_table' doesn't exist
 create temporary table t3 like t1;
 ERROR 42S01: Table 't3' already exists
 drop table t1, t2, t3;

mysql-test/r/grant2.result

@@ -381,3 +381,26 @@ drop table t2;
 REVOKE ALL PRIVILEGES, GRANT OPTION FROM `a@`@localhost;
 drop user `a@`@localhost;
 SET GLOBAL log_bin_trust_function_creators = 0;
+drop database if exists mysqltest_1;
+drop database if exists mysqltest_2;
+drop user mysqltest_u1@localhost;
+create database mysqltest_1;
+create database mysqltest_2;
+grant all on mysqltest_1.* to mysqltest_u1@localhost;
+use mysqltest_2;
+create table t1 (i int);
+show create table mysqltest_2.t1;
+ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 't1'
+create table t1 like mysqltest_2.t1;
+ERROR 42000: SELECT command denied to user 'mysqltest_u1'@'localhost' for table 't1'
+grant select on mysqltest_2.t1 to mysqltest_u1@localhost;
+show create table mysqltest_2.t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `i` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+create table t1 like mysqltest_2.t1;
+use test;
+drop database mysqltest_1;
+drop database mysqltest_2;
+drop user mysqltest_u1@localhost;

mysql-test/t/create_select-big.test → mysql-test/t/create-big.test

-# Tests for various aspects of CREATE TABLE ... SELECT implementation
+# Tests for various concurrency-related aspects of CREATE TABLE ... SELECT
+# and CREATE TABLE like implementation.
 #
-# Note that we don't test general CREATE TABLE ... SELECT functionality here as
-# it is already covered by create.test. We are more interested in extreme cases.
+# Note that we don't test general CREATE TABLE ... SELECT/LIKE functionality
+# here as it is already covered by create.test. We are more interested in
+# extreme cases.
 #
 # This test takes rather long time so let us run it only in --big-test mode
 --source include/big_test.inc
 # We are using some debug-only features in this test
 --source include/have_debug.inc
+# Some of tests below also use binlog to check that statements are
+# executed and logged in correct order
+--source include/have_binlog_format_mixed_or_statement.inc
 
 # Create auxilliary connections
 connect (addconroot1, localhost, root,,);
@@ -20,7 +25,7 @@ drop table if exists t1,t2,t3,t4,t5;
 
 
 #
-# Tests for concurrency problems.
+# Tests for concurrency problems in CREATE TABLE ... SELECT
 #
 # We introduce delays between various stages of table creation
 # and check that other statements dealing with this table cannot
@@ -266,3 +271,122 @@ connection default;
 select * from t1;
 show create table t1;
 drop table t1, t2, t3;
+
+
+# Tests for possible concurrency issues with CREATE TABLE ... LIKE
+#
+# Bug #18950 "create table like does not obtain LOCK_open"
+# Bug #23667 "CREATE TABLE LIKE is not isolated from alteration by other
+#             connections"
+#
+# Again the idea of this test is that we introduce artificial delays on
+# various stages of table creation and check that concurrent statements
+# for tables from CREATE TABLE ... LIKE are not interfering.
+
+--disable_warnings
+drop table if exists t1,t2;
+--enable_warnings
+
+# What happens if some statements sneak in right after we have
+# opened source table ?
+create table t1 (i int);
+set session debug="+d,sleep_create_like_before_check_if_exists";
+# Reset binlog to have clear start
+reset master;
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+# DML on source table should be allowed to run concurrently
+insert into t1 values (1);
+# And DDL should wait
+drop table t1;
+connection default;
+--reap
+show create table t2;
+drop table t2;
+# Let us check that statements were executed/binlogged in correct order
+--replace_column 2 # 5 #
+show binlog events in 'master-bin.000001' from 106;
+
+# Now let us check the gap between check for target table
+# existance and copying of .frm file. 
+create table t1 (i int);
+set session debug="-d,sleep_create_like_before_check_if_exists:+d,sleep_create_like_before_copy";
+# It should be impossible to create target table concurrently
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+create table if not exists t2 (j int);
+connection default;
+--reap
+show create table t2;
+drop table t2;
+# And concurrent DDL on the source table should be still disallowed 
+reset master;
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+drop table t1;
+connection default;
+--reap
+drop table t2;
+--replace_column 2 # 5 #
+show binlog events in 'master-bin.000001' from 106;
+
+# And now he gap between copying of .frm file and ha_create_table() call. 
+create table t1 (i int);
+set session debug="-d,sleep_create_like_before_copy:+d,sleep_create_like_before_ha_create";
+# Both DML and DDL on target table should wait till operation completes
+reset master;
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+insert into t2 values (1);
+connection default;
+--reap
+drop table t2;
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+drop table t2;
+connection default;
+--reap
+# Concurrent DDL on the source table still waits 
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+drop table t1;
+connection default;
+--reap
+drop table t2;
+--replace_column 2 # 5 #
+show binlog events in 'master-bin.000001' from 106;
+
+# Finally we check the gap between ha_create_table() and binlogging
+create table t1 (i int);
+set session debug="-d,sleep_create_like_before_ha_create:+d,sleep_create_like_before_binlogging";
+reset master;
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+insert into t2 values (1);
+connection default;
+--reap
+drop table t2;
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+drop table t2;
+connection default;
+--reap
+--send create table t2 like t1;
+connection addconroot1;
+--sleep 2
+drop table t1;
+connection default;
+--reap
+drop table t2;
+--replace_column 2 # 5 #
+show binlog events in 'master-bin.000001' from 106;
+
+set session debug="-d,sleep_create_like_before_binlogging";

mysql-test/t/create.test

@@ -306,7 +306,7 @@ create table t3 like t1;
 create table t3 like mysqltest.t3;
 --error 1049
 create table non_existing_database.t1 like t1;
---error 1051
+--error ER_NO_SUCH_TABLE
 create table t3 like non_existing_table;
 --error 1050
 create temporary table t3 like t1;

mysql-test/t/disabled.def

@@ -30,7 +30,6 @@ rpl_ddl                  : BUG#26418 2007-03-01 mleich Slave out of sync after C
 rpl_ndb_innodb2ndb       : Bug #19710  Cluster replication to partition table fails on DELETE FROM statement
 rpl_ndb_myisam2ndb       : Bug #19710  Cluster replication to partition table fails on DELETE FROM statement
 rpl_row_blob_innodb      : BUG#18980 2006-04-10 kent    Test fails randomly
-synchronization          : Bug#24529  	Test 'synchronization' fails on Mac pushbuild; Also on Linux 64 bit.
 
 # the below testcase have been reworked to avoid the bug, test contains comment, keep bug open
 #ndb_binlog_ddl_multi     : BUG#18976 2006-04-10 kent    CRBR: multiple binlog, second binlog may miss schema log events

mysql-test/t/grant2.test

@@ -513,3 +513,44 @@ REVOKE ALL PRIVILEGES, GRANT OPTION FROM `a@`@localhost;
 drop user `a@`@localhost;
 
 SET GLOBAL log_bin_trust_function_creators = 0;
+
+
+#
+# Bug#25578 "CREATE TABLE LIKE does not require any privileges on source table"
+#
+--disable_warnings
+drop database if exists mysqltest_1;
+drop database if exists mysqltest_2;
+--enable_warnings
+--error 0,ER_CANNOT_USER
+drop user mysqltest_u1@localhost;
+
+create database mysqltest_1;
+create database mysqltest_2;
+grant all on mysqltest_1.* to mysqltest_u1@localhost;
+use mysqltest_2;
+create table t1 (i int);
+
+# Connect as user with all rights on mysqltest_1 but with no rights on mysqltest_2.
+connect (user1,localhost,mysqltest_u1,,mysqltest_1);
+connection user1;
+# As expected error is emitted
+--error ER_TABLEACCESS_DENIED_ERROR 
+show create table mysqltest_2.t1;
+# This should emit error as well
+--error ER_TABLEACCESS_DENIED_ERROR
+create table t1 like mysqltest_2.t1;
+
+# Now let us check that SELECT privilege on the source is enough
+connection default;
+grant select on mysqltest_2.t1 to mysqltest_u1@localhost;
+connection user1;
+show create table mysqltest_2.t1;
+create table t1 like mysqltest_2.t1;
+
+# Clean-up
+connection default;
+use test;
+drop database mysqltest_1;
+drop database mysqltest_2;
+drop user mysqltest_u1@localhost;

sql/handler.h

@@ -223,6 +223,7 @@
 
 #define HA_LEX_CREATE_TMP_TABLE	1
 #define HA_LEX_CREATE_IF_NOT_EXISTS 2
+#define HA_LEX_CREATE_TABLE_LIKE 4
 #define HA_OPTION_NO_CHECKSUM	(1L << 17)
 #define HA_OPTION_NO_DELAY_KEY_WRITE (1L << 18)
 #define HA_MAX_REC_LENGTH	65535

sql/mysql_priv.h

@@ -978,9 +978,8 @@ bool mysql_alter_table(THD *thd, char *new_db, char *new_name,
                        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);
-bool mysql_create_like_table(THD *thd, TABLE_LIST *table,
-                             HA_CREATE_INFO *create_info,
-                             Table_ident *src_table);
+bool mysql_create_like_table(THD *thd, TABLE_LIST *table, TABLE_LIST *src_table,
+                             HA_CREATE_INFO *create_info);
 bool mysql_rename_table(handlerton *base, const char *old_db,
                         const char * old_name, const char *new_db,
                         const char * new_name, uint flags);

sql/sql_lex.h

@@ -1066,7 +1066,6 @@ typedef struct st_lex : public Query_tables_list
 
   char *length,*dec,*change;
   LEX_STRING name;
-  Table_ident *like_name;
   char *help_arg;
   char *backup_dir;				/* For RESTORE/BACKUP */
   char* to_log;                                 /* For PURGE MASTER LOGS TO */

sql/sql_parse.cc

@@ -39,6 +39,7 @@
    "FUNCTION" : "PROCEDURE")
 
 static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables);
+static bool check_show_create_table_access(THD *thd, TABLE_LIST *table);
 
 const char *any_db="*any*";	// Special symbol for check_access
 
@@ -2231,9 +2232,9 @@ mysql_execute_command(THD *thd)
       if (lex->create_info.options & HA_LEX_CREATE_TMP_TABLE)
         thd->options|= OPTION_KEEP_LOG;
       /* regular create */
-      if (lex->like_name)
-        res= mysql_create_like_table(thd, create_table, &lex->create_info, 
-                                     lex->like_name); 
+      if (lex->create_info.options & HA_LEX_CREATE_TABLE_LIKE)
+        res= mysql_create_like_table(thd, create_table, select_tables,
+                                     &lex->create_info);
       else
       {
         res= mysql_create_table(thd, create_table->db,
@@ -2423,12 +2424,7 @@ mysql_execute_command(THD *thd)
       /* Ignore temporary tables if this is "SHOW CREATE VIEW" */
       if (lex->only_view)
         first_table->skip_temporary= 1;
-
-      if (check_access(thd, SELECT_ACL | EXTRA_ACL, first_table->db,
-		       &first_table->grant.privilege, 0, 0, 
-                       test(first_table->schema_table)))
-	goto error;
-      if (grant_option && check_grant(thd, SELECT_ACL, all_tables, 2, UINT_MAX, 0))
+      if (check_show_create_table_access(thd, first_table))
 	goto error;
       res= mysqld_show_create(thd, first_table);
       break;
@@ -6845,6 +6841,25 @@ bool insert_precheck(THD *thd, TABLE_LIST *tables)
 }
 
 
+/**
+    @brief  Check privileges for SHOW CREATE TABLE statement.
+
+    @param  thd    Thread context
+    @param  table  Target table
+
+    @retval TRUE  Failure
+    @retval FALSE Success
+*/
+
+static bool check_show_create_table_access(THD *thd, TABLE_LIST *table)
+{
+  return check_access(thd, SELECT_ACL | EXTRA_ACL, table->db,
+                      &table->grant.privilege, 0, 0,
+                      test(table->schema_table)) ||
+         grant_option && check_grant(thd, SELECT_ACL, table, 2, UINT_MAX, 0);
+}
+
+
 /*
   CREATE TABLE query pre-check
 
@@ -6910,6 +6925,11 @@ bool create_table_precheck(THD *thd, TABLE_LIST *tables,
     if (tables && check_table_access(thd, SELECT_ACL, tables,0))
       goto err;
   }
+  else if (lex->create_info.options & HA_LEX_CREATE_TABLE_LIKE)
+  {
+    if (check_show_create_table_access(thd, tables))
+      goto err;
+  }
   error= FALSE;
 
 err:

sql/sql_partition.cc

@@ -3776,20 +3776,15 @@ bool mysql_unpack_partition(THD *thd,
              ha_legacy_type(default_db_type)));
   if (is_create_table_ind && old_lex->sql_command == SQLCOM_CREATE_TABLE)
   {
-    if (old_lex->like_name)
+    if (old_lex->create_info.options & HA_LEX_CREATE_TABLE_LIKE)
     {
       /*
-        This code is executed when we do a CREATE TABLE t1 LIKE t2
-        old_lex->like_name contains the t2 and the table we are opening has 
-        name t1.
+        This code is executed when we create table in CREATE TABLE t1 LIKE t2.
+        old_lex->query_tables contains table list element for t2 and the table
+        we are opening has name t1.
       */
-      Table_ident *table_ident= old_lex->like_name;
-      char *src_db= table_ident->db.str ? table_ident->db.str : thd->db;
-      char *src_table= table_ident->table.str;
-      char buf[FN_REFLEN];
-      build_table_filename(buf, sizeof(buf), src_db, src_table, "", 0);
-      if (partition_default_handling(table, part_info,
-                                     FALSE, buf))
+      if (partition_default_handling(table, part_info, FALSE,
+                                     old_lex->query_tables->table->s->path.str))
       {
         result= TRUE;
         goto end;

sql/sql_table.cc

@@ -4665,114 +4665,51 @@ bool mysql_preload_keys(THD* thd, TABLE_LIST* tables)
   SYNOPSIS
     mysql_create_like_table()
     thd		Thread object
-    table	Table list (one table only)
+    table       Table list element for target table
+    src_table   Table list element for source table
     create_info Create info
-    table_ident Src table_ident
 
   RETURN VALUES
     FALSE OK
     TRUE  error
 */
 
-bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
-                             HA_CREATE_INFO *lex_create_info,
-                             Table_ident *table_ident)
+bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
+                             HA_CREATE_INFO *lex_create_info)
 {
-  TABLE *tmp_table, *name_lock= 0;
+  TABLE *name_lock= 0;
   char src_path[FN_REFLEN], dst_path[FN_REFLEN];
-  char src_table_name_buff[FN_REFLEN], src_db_name_buff[FN_REFLEN];
   uint dst_path_length;
   char *db= table->db;
   char *table_name= table->table_name;
-  char *src_db;
-  char *src_table= table_ident->table.str;
   int  err;
   bool res= TRUE;
-  enum legacy_db_type not_used;
+  uint not_used;
   HA_CREATE_INFO *create_info;
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   char tmp_path[FN_REFLEN];
 #endif
   char ts_name[FN_LEN];
-  TABLE_LIST src_tables_list;
   DBUG_ENTER("mysql_create_like_table");
 
   if (!(create_info= copy_create_info(lex_create_info)))
   {
     DBUG_RETURN(TRUE);
   }
-  DBUG_ASSERT(table_ident->db.str); /* Must be set in the parser */
-  src_db= table_ident->db.str;
+
+  /* CREATE TABLE ... LIKE is not allowed for views. */
+  src_table->required_type= FRMTYPE_TABLE;
 
   /*
-    Validate the source table
+    By opening source table we guarantee that it exists and no concurrent
+    DDL operation will mess with it. Later we also take an exclusive
+    name-lock on target table name, which makes copying of .frm file,
+    call to ha_create_table() and binlogging atomic against concurrent DML
+    and DDL operations on target table. Thus by holding both these "locks"
+    we ensure that our statement is properly isolated from all concurrent
+    operations which matter.
   */
-  if (check_string_char_length(&table_ident->table, "", NAME_CHAR_LEN,
-                               system_charset_info, 1) ||
-      (table_ident->table.length &&
-       check_table_name(src_table,table_ident->table.length)))
-  {
-    my_error(ER_WRONG_TABLE_NAME, MYF(0), src_table);
-    DBUG_RETURN(TRUE);
-  }
-  if (!src_db || check_db_name(&table_ident->db))
-  {
-    my_error(ER_WRONG_DB_NAME, MYF(0), src_db ? src_db : "NULL");
-    DBUG_RETURN(-1);
-  }
-
-  if ((tmp_table= find_temporary_table(thd, src_db, src_table)))
-    strxmov(src_path, tmp_table->s->path.str, reg_ext, NullS);
-  else
-  {
-    build_table_filename(src_path, sizeof(src_path),
-                         src_db, src_table, reg_ext, 0);
-    /* Resolve symlinks (for windows) */
-    unpack_filename(src_path, src_path);
-    if (lower_case_table_names)
-      my_casedn_str(files_charset_info, src_path);
-    if (access(src_path, F_OK))
-    {
-      my_error(ER_BAD_TABLE_ERROR, MYF(0), src_table);
-      goto err;
-    }
-  }
-
-  /* 
-     create like should be not allowed for Views, Triggers, ... 
-  */
-  if (mysql_frm_type(thd, src_path, &not_used) != FRMTYPE_TABLE)
-  {
-    my_error(ER_WRONG_OBJECT, MYF(0), src_db, src_table, "BASE TABLE");
-    goto err;
-  }
-
-  if (lower_case_table_names)
-  {
-    if (src_db)
-    {
-      strmake(src_db_name_buff, src_db,
-              min(sizeof(src_db_name_buff) - 1, table_ident->db.length));
-      my_casedn_str(files_charset_info, src_db_name_buff);
-      src_db= src_db_name_buff;
-    }
-    if (src_table)
-    {
-      strmake(src_table_name_buff, src_table,
-              min(sizeof(src_table_name_buff) - 1, table_ident->table.length));
-      my_casedn_str(files_charset_info, src_table_name_buff);
-      src_table= src_table_name_buff;
-    }
-  }
-
-  bzero((gptr)&src_tables_list, sizeof(src_tables_list));
-  src_tables_list.db= src_db;
-  src_tables_list.db_length= table_ident->db.length;
-  src_tables_list.lock_type= TL_READ;
-  src_tables_list.table_name= src_table;
-  src_tables_list.alias= src_table;
-
-  if (simple_open_n_lock_tables(thd, &src_tables_list))
+  if (open_tables(thd, &src_table, &not_used, 0))
     DBUG_RETURN(TRUE);
 
   /*
@@ -4781,17 +4718,19 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
     Add something to get possible tablespace info from src table,
     it can get valid tablespace name only for disk-base ndb table
   */
-  if ((src_tables_list.table->file->get_tablespace_name(thd, ts_name, FN_LEN)))
+  if ((src_table->table->file->get_tablespace_name(thd, ts_name, FN_LEN)))
   {
     create_info->tablespace= ts_name;
     create_info->storage_media= HA_SM_DISK;
   }
 
-  /*
-    Validate the destination table
+  strxmov(src_path, src_table->table->s->path.str, reg_ext, NullS);
 
-    skip the destination table name checking as this is already
-    validated.
+  DBUG_EXECUTE_IF("sleep_create_like_before_check_if_exists", my_sleep(6000000););
+
+  /*
+    Check that destination tables does not exist. Note that its name
+    was already checked when it was added to the table list.
   */
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
@@ -4812,15 +4751,29 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
       goto table_exists;
   }
 
+  DBUG_EXECUTE_IF("sleep_create_like_before_copy", my_sleep(6000000););
+
   /*
     Create a new table by copying from source table
+
+    Altough exclusive name-lock on target table protects us from concurrent
+    DML and DDL operations on it we still want to wrap .FRM creation and call
+    to ha_create_table() in critical section protected by LOCK_open in order
+    to provide minimal atomicity against operations which disregard name-locks,
+    like I_S implementation, for example. This is a temporary and should not
+    be copied. Instead we should fix our code to always honor name-locks.
+
+    Also some engines (e.g. NDB cluster) require that LOCK_open should be held
+    during the call to ha_create_table(). See bug #28614 for more info.
   */
+  VOID(pthread_mutex_lock(&LOCK_open));
   if (my_copy(src_path, dst_path, MYF(MY_DONT_OVERWRITE_FILE)))
   {
     if (my_errno == ENOENT)
       my_error(ER_BAD_DB_ERROR,MYF(0),db);
     else
       my_error(ER_CANT_CREATE_FILE,MYF(0),dst_path,my_errno);
+    VOID(pthread_mutex_unlock(&LOCK_open));
     goto err;
   }
 
@@ -4842,10 +4795,12 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
   strmov(src_path, tmp_path);
   my_copy(src_path, dst_path, MYF(MY_DONT_OVERWRITE_FILE));
 #endif
+
+  DBUG_EXECUTE_IF("sleep_create_like_before_ha_create", my_sleep(6000000););
+
   dst_path[dst_path_length - reg_ext_length]= '\0';  // Remove .frm
-  pthread_mutex_lock(&LOCK_open);  
   err= ha_create_table(thd, dst_path, db, table_name, create_info, 1);
-  pthread_mutex_unlock(&LOCK_open);
+  VOID(pthread_mutex_unlock(&LOCK_open));
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
     if (err || !open_temporary_table(thd, dst_path, db, table_name, 1))
@@ -4862,6 +4817,8 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
     goto err;	    /* purecov: inspected */
   }
 
+  DBUG_EXECUTE_IF("sleep_create_like_before_binlogging", my_sleep(6000000););
+
   /*
     We have to write the query before we unlock the tables.
   */
@@ -4881,14 +4838,10 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
            3    temporary    normal Nothing
            4    temporary temporary Nothing
            ==== ========= ========= ==============================
-
-       The variable 'tmp_table' below is used to see if the source
-       table is a temporary table: if it is set, then the source table
-       was a temporary table and we can take apropriate actions.
     */
     if (!(create_info->options & HA_LEX_CREATE_TMP_TABLE))
     {
-      if (tmp_table)                            // Case 2
+      if (src_table->table->s->tmp_table)               // Case 2
       {
         char buf[2048];
         String query(buf, sizeof(buf), system_charset_info);

sql/sql_yacc.yy

@@ -1579,7 +1579,6 @@ create:
 	  lex->create_info.default_table_charset= NULL;
 	  lex->name.str= 0;
           lex->name.length= 0;
-         lex->like_name= 0;
 	}
 	create2
 	{
@@ -3603,27 +3602,15 @@ create2:
           create3 {}
         | LIKE table_ident
           {
-            THD *thd= YYTHD;
-            LEX *lex= thd->lex;
-            if (!(lex->like_name= $2))
+            Lex->create_info.options|= HA_LEX_CREATE_TABLE_LIKE;
+            if (!Lex->select_lex.add_table_to_list(YYTHD, $2, NULL, 0, TL_READ))
               MYSQL_YYABORT;
-            if ($2->db.str == NULL &&
-                thd->copy_db_to(&($2->db.str), &($2->db.length)))
-            {
-              MYSQL_YYABORT;
-            }
           }
         | '(' LIKE table_ident ')'
           {
-            THD *thd= YYTHD;
-            LEX *lex= thd->lex;
-            if (!(lex->like_name= $3))
+            Lex->create_info.options|= HA_LEX_CREATE_TABLE_LIKE;
+            if (!Lex->select_lex.add_table_to_list(YYTHD, $3, NULL, 0, TL_READ))
               MYSQL_YYABORT;
-            if ($3->db.str == NULL &&
-                thd->copy_db_to(&($3->db.str), &($3->db.length)))
-            {
-              MYSQL_YYABORT;
-            }
           }
         ;
 
@@ -5112,7 +5099,6 @@ alter:
 	  lex->key_list.empty();
 	  lex->col_list.empty();
           lex->select_lex.init_order();
-	  lex->like_name= 0;
 	  lex->select_lex.db=
             ((TABLE_LIST*) lex->select_lex.table_list.first)->db;
 	  bzero((char*) &lex->create_info,sizeof(lex->create_info));