new show create view output

mysqldump view support (BUG#4972)
workaround to allow view work after LOCK TABLES


client/mysqldump.c:
  view support
mysql-test/r/lowercase_view.result:
  new show create view output
mysql-test/r/view.result:
  new show create view output
  test of locked views
mysql-test/t/view.test:
  new show create view output
  test of locked views
sql/sql_base.cc:
  workaround to allow view work after LOCK TABLES
sql/sql_show.cc:
  new show create view output (to help mysql dump detect views)

client/mysqldump.c

@@ -105,6 +105,8 @@ static uint opt_protocol= 0;
 static char *default_charset= (char*) MYSQL_UNIVERSAL_CLIENT_CHARSET;
 static CHARSET_INFO *charset_info= &my_charset_latin1;
 const char *default_dbug_option="d:t:o,/tmp/mysqldump.trace";
+/* do we met VIEWs during tables scaning */
+my_bool was_views= 0;
 
 const char *compatible_mode_names[]=
 {
@@ -333,6 +335,8 @@ static int dump_databases(char **);
 static int dump_all_databases();
 static char *quote_name(const char *name, char *buff, my_bool force);
 static const char *check_if_ignore_table(const char *table_name);
+static my_bool getViewStructure(char *table, char* db);
+static my_bool dump_all_views_in_db(char *database);
 
 #include <help_start.h>
 
@@ -964,6 +968,7 @@ static uint getTableStructure(char *table, char* db)
     {
       /* Make an sql-file, if path was given iow. option -T was given */
       char buff[20+FN_REFLEN];
+      MYSQL_FIELD *field;
 
       sprintf(buff,"show create table %s", result_table);
       if (mysql_query(sock, buff))
@@ -999,8 +1004,16 @@ static uint getTableStructure(char *table, char* db)
 	check_io(sql_file);
       }
 
-      tableRes=mysql_store_result(sock);
-      row=mysql_fetch_row(tableRes);
+      tableRes= mysql_store_result(sock);
+      field= mysql_fetch_field_direct(tableRes, 0);
+      if (strcmp(field->name, "View") == 0)
+      {
+        if (verbose)
+          fprintf(stderr, "-- It's a view, skipped\n");
+        was_views= 1;
+        DBUG_RETURN(0)
+      }
+      row= mysql_fetch_row(tableRes);
       fprintf(sql_file, "%s;\n", row[1]);
       check_io(sql_file);
       mysql_free_result(tableRes);
@@ -1752,6 +1765,21 @@ static int dump_all_databases()
     if (dump_all_tables_in_db(row[0]))
       result=1;
   }
+  if (was_views)
+  {
+    if (mysql_query(sock, "SHOW DATABASES") ||
+        !(tableres = mysql_store_result(sock)))
+    {
+      my_printf_error(0, "Error: Couldn't execute 'SHOW DATABASES': %s",
+                      MYF(0), mysql_error(sock));
+      return 1;
+    }
+    while ((row = mysql_fetch_row(tableres)))
+    {
+      if (dump_all_views_in_db(row[0]))
+        result=1;
+    }
+  }
   return result;
 }
 /* dump_all_databases */
@@ -1760,11 +1788,20 @@ static int dump_all_databases()
 static int dump_databases(char **db_names)
 {
   int result=0;
-  for ( ; *db_names ; db_names++)
+  char **db;
+  for (db= db_names ; *db ; db++)
   {
-    if (dump_all_tables_in_db(*db_names))
+    if (dump_all_tables_in_db(*db))
       result=1;
   }
+  if (!result && was_views)
+  {
+    for (db= db_names ; *db ; db++)
+    {
+      if (dump_all_views_in_db(*db))
+        result=1;
+    }
+  }
   return result;
 } /* dump_databases */
 
@@ -1872,11 +1909,64 @@ static int dump_all_tables_in_db(char *database)
   return 0;
 } /* dump_all_tables_in_db */
 
+/*
+   dump structure of views of database
+
+   SYNOPSIS
+     dump_all_views_in_db()
+     database  database name
+
+  RETURN
+    0 OK
+    1 ERROR
+*/
 
+static my_bool dump_all_views_in_db(char *database)
+{
+  char *table;
+  uint numrows;
+  char table_buff[NAME_LEN*2+3];
+
+  if (init_dumping(database))
+    return 1;
+  if (opt_xml)
+    print_xml_tag1(md_result_file, "", "database name=", database, "\n");
+  if (lock_tables)
+  {
+    DYNAMIC_STRING query;
+    init_dynamic_string(&query, "LOCK TABLES ", 256, 1024);
+    for (numrows= 0 ; (table= getTableName(1)); numrows++)
+    {
+      dynstr_append(&query, quote_name(table, table_buff, 1));
+      dynstr_append(&query, " READ /*!32311 LOCAL */,");
+    }
+    if (numrows && mysql_real_query(sock, query.str, query.length-1))
+      DBerror(sock, "when using LOCK TABLES");
+            /* We shall continue here, if --force was given */
+    dynstr_free(&query);
+  }
+  if (flush_logs)
+  {
+    if (mysql_refresh(sock, REFRESH_LOG))
+      DBerror(sock, "when doing refresh");
+           /* We shall continue here, if --force was given */
+  }
+  while ((table= getTableName(0)))
+     getViewStructure(table, database);
+  if (opt_xml)
+  {
+    fputs("</database>\n", md_result_file);
+    check_io(md_result_file);
+  }
+  if (lock_tables)
+    mysql_query(sock,"UNLOCK TABLES");
+  return 0;
+} /* dump_all_tables_in_db */
 
 static int dump_selected_tables(char *db, char **table_names, int tables)
 {
   uint numrows;
+  int i;
   char table_buff[NAME_LEN*+3];
 
   if (init_dumping(db))
@@ -1884,7 +1974,6 @@ static int dump_selected_tables(char *db, char **table_names, int tables)
   if (lock_tables)
   {
     DYNAMIC_STRING query;
-    int i;
 
     init_dynamic_string(&query, "LOCK TABLES ", 256, 1024);
     for (i=0 ; i < tables ; i++)
@@ -1905,11 +1994,16 @@ static int dump_selected_tables(char *db, char **table_names, int tables)
   }
   if (opt_xml)
     print_xml_tag1(md_result_file, "", "database name=", db, "\n");
-  for (; tables > 0 ; tables-- , table_names++)
+  for (i=0 ; i < tables ; i++)
   {
-    numrows = getTableStructure(*table_names, db);
+    numrows = getTableStructure(table_names[i], db);
     if (!dFlag && numrows > 0)
-      dumpTable(numrows, *table_names);
+      dumpTable(numrows, table_names[i]);
+  }
+  if (was_views)
+  {
+    for (i=0 ; i < tables ; i++)
+      getViewStructure(table_names[i], db);
   }
   if (opt_xml)
   {
@@ -2048,6 +2142,100 @@ static const char *check_if_ignore_table(const char *table_name)
 }
 
 
+/*
+  Getting VIEW structure
+
+  SYNOPSIS
+    getViewStructure()
+    table   view name
+    db      db name
+
+  RETURN
+    0 OK
+    1 ERROR
+*/
+
+static my_bool getViewStructure(char *table, char* db)
+{
+  MYSQL_RES  *tableRes;
+  MYSQL_ROW  row;
+  MYSQL_FIELD *field;
+  char	     *result_table, *opt_quoted_table;
+  char	     table_buff[NAME_LEN*2+3];
+  char	     table_buff2[NAME_LEN*2+3];
+  char       buff[20+FN_REFLEN];
+  FILE       *sql_file = md_result_file;
+  DBUG_ENTER("getViewStructure");
+
+  if (tFlag)
+    DBUG_RETURN(0);
+
+  if (verbose)
+    fprintf(stderr, "-- Retrieving view structure for table %s...\n", table);
+
+  sprintf(insert_pat,"SET OPTION SQL_QUOTE_SHOW_CREATE=%d",
+	  (opt_quoted || opt_keywords));
+  result_table=     quote_name(table, table_buff, 1);
+  opt_quoted_table= quote_name(table, table_buff2, 0);
+
+  sprintf(buff,"show create table %s", result_table);
+  if (mysql_query(sock, buff))
+  {
+    fprintf(stderr, "%s: Can't get CREATE TABLE for view %s (%s)\n",
+            my_progname, result_table, mysql_error(sock));
+    safe_exit(EX_MYSQLERR);
+    DBUG_RETURN(0);
+  }
+
+  if (path)
+  {
+    char filename[FN_REFLEN], tmp_path[FN_REFLEN];
+    convert_dirname(tmp_path,path,NullS);
+    sql_file= my_fopen(fn_format(filename, table, tmp_path, ".sql", 4),
+                       O_WRONLY, MYF(MY_WME));
+    if (!sql_file)			/* If file couldn't be opened */
+    {
+      safe_exit(EX_MYSQLERR);
+      DBUG_RETURN(1);
+    }
+    write_header(sql_file, db);
+  }
+  tableRes= mysql_store_result(sock);
+  field= mysql_fetch_field_direct(tableRes, 0);
+  if (strcmp(field->name, "View") != 0)
+  {
+    if (verbose)
+      fprintf(stderr, "-- It's base table, skipped\n");
+    DBUG_RETURN(0)
+  }
+
+  if (!opt_xml && opt_comments)
+  {
+    fprintf(sql_file, "\n--\n-- View structure for view %s\n--\n\n",
+            result_table);
+    check_io(sql_file);
+  }
+  if (opt_drop)
+  {
+    fprintf(sql_file, "DROP VIEW IF EXISTS %s;\n", opt_quoted_table);
+    check_io(sql_file);
+  }
+
+  row= mysql_fetch_row(tableRes);
+  fprintf(sql_file, "%s;\n", row[1]);
+  check_io(sql_file);
+  mysql_free_result(tableRes);
+
+  if (sql_file != md_result_file)
+  {
+    fputs("\n", sql_file);
+    write_footer(sql_file);
+    my_fclose(sql_file, MYF(MY_WME));
+  }
+  DBUG_RETURN(0);
+}
+
+
 int main(int argc, char **argv)
 {
   MYSQL_ROW row;

mysql-test/r/lowercase_view.result

@@ -6,7 +6,7 @@ use MySQLTest;
 create table TaB (Field int);
 create view ViE as select * from TAb;
 show create table VIe;
-Table	Create Table
+View	Create View
 vie	CREATE VIEW `mysqltest`.`vie` AS select `mysqltest`.`tab`.`Field` AS `Field` from `mysqltest`.`tab`
 drop database MySQLTest;
 use test;

mysql-test/r/view.result

@@ -31,10 +31,10 @@ c
 6
 11
 show create table v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW `test`.`v1` AS select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
 show create view v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW `test`.`v1` AS select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
 show create view t1;
 ERROR HY000: 'test.t1' is not VIEW
@@ -53,8 +53,8 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 Warnings:
 Note	1003	select (`test`.`t1`.`b` + 1) AS `c` from `test`.`v1`
 create algorithm=temptable view v2 (c) as select b+1 from t1;
-show create table v2;
-Table	Create Table
+show create view v2;
+View	Create View
 v2	CREATE ALGORITHM=TEMPTABLE VIEW `test`.`v2` AS select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
 select c from v2;
 c
@@ -286,66 +286,66 @@ c	bigint(20)	YES		NULL
 d	bigint(20)	YES		NULL	
 explain select c from mysqltest.v1;
 ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
-show create table mysqltest.v1;
+show create view mysqltest.v1;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v1'
 explain select c from mysqltest.v2;
 ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
-show create table mysqltest.v2;
+show create view mysqltest.v2;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v2'
 explain select c from mysqltest.v3;
 ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
-show create table mysqltest.v3;
+show create view mysqltest.v3;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v3'
 explain select c from mysqltest.v4;
 ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
-show create table mysqltest.v4;
+show create view mysqltest.v4;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v4'
 grant select on mysqltest.t1 to mysqltest_1@localhost;
 explain select c from mysqltest.v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
-show create table mysqltest.v1;
+show create view mysqltest.v1;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v1'
 explain select c from mysqltest.v2;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	const row not found
 2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
-show create table mysqltest.v2;
+show create view mysqltest.v2;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v2'
 explain select c from mysqltest.v3;
 ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
-show create table mysqltest.v3;
+show create view mysqltest.v3;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v3'
 explain select c from mysqltest.v4;
 ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
-show create table mysqltest.v4;
+show create view mysqltest.v4;
 ERROR 42000: show create view command denied to user 'mysqltest_1'@'localhost' for table 'v4'
 grant show view on mysqltest.* to mysqltest_1@localhost;
 explain select c from mysqltest.v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	0	const row not found
-show create table mysqltest.v1;
-Table	Create Table
+show create view mysqltest.v1;
+View	Create View
 v1	CREATE VIEW `mysqltest`.`v1` AS select (`mysqltest`.`t1`.`a` + 1) AS `c`,(`mysqltest`.`t1`.`b` + 1) AS `d` from `mysqltest`.`t1`
 explain select c from mysqltest.v2;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	const row not found
 2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
-show create table mysqltest.v2;
-Table	Create Table
+show create view mysqltest.v2;
+View	Create View
 v2	CREATE ALGORITHM=TEMPTABLE VIEW `mysqltest`.`v2` AS select (`mysqltest`.`t1`.`a` + 1) AS `c`,(`mysqltest`.`t1`.`b` + 1) AS `d` from `mysqltest`.`t1`
 explain select c from mysqltest.v3;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
-show create table mysqltest.v3;
-Table	Create Table
+show create view mysqltest.v3;
+View	Create View
 v3	CREATE VIEW `mysqltest`.`v3` AS select (`mysqltest`.`t2`.`a` + 1) AS `c`,(`mysqltest`.`t2`.`b` + 1) AS `d` from `mysqltest`.`t2`
 explain select c from mysqltest.v4;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	const row not found
 2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
-show create table mysqltest.v4;
-Table	Create Table
+show create view mysqltest.v4;
+View	Create View
 v4	CREATE ALGORITHM=TEMPTABLE VIEW `mysqltest`.`v4` AS select (`mysqltest`.`t2`.`a` + 1) AS `c`,(`mysqltest`.`t2`.`b` + 1) AS `d` from `mysqltest`.`t2`
 revoke all privileges on mysqltest.* from mysqltest_1@localhost;
 delete from mysql.user where user='mysqltest_1';
@@ -946,7 +946,7 @@ set sql_mode='ansi';
 create table t1 ("a*b" int);
 create view v1 as select "a*b" from t1;
 show create view v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW "test"."v1" AS select `test`.`t1`.`a*b` AS `a*b` from `test`.`t1`
 drop view v1;
 drop table t1;
@@ -1054,7 +1054,7 @@ drop view v1;
 drop table t1;
 CREATE VIEW v1 (f1,f2,f3,f4) AS SELECT connection_id(), pi(), current_user(), version();
 SHOW CREATE VIEW v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW `test`.`v1` AS select sql_no_cache connection_id() AS `f1`,pi() AS `f2`,current_user() AS `f3`,version() AS `f4`
 drop view v1;
 create table t1 (s1 int);
@@ -1088,13 +1088,13 @@ create table t2 (a int);
 create view v1 as select a from t1;
 create view v2 as select a from t2 where a in (select a from v1);
 show create view v2;
-Table	Create Table
+View	Create View
 v2	CREATE VIEW `test`.`v2` AS select `test`.`t2`.`a` AS `a` from `test`.`t2` where `a` in (select `v1`.`a` AS `a` from `test`.`v1`)
 drop view v2, v1;
 drop table t1, t2;
 CREATE VIEW `v 1` AS select 5 AS `5`;
 show create view `v 1`;
-Table	Create Table
+View	Create View
 v 1	CREATE VIEW `test`.`v 1` AS select 5 AS `5`
 drop view `v 1`;
 create database mysqltest;
@@ -1162,14 +1162,14 @@ select * from v3;
 a	b
 1	1
 show create view v3;
-Table	Create Table
+View	Create View
 v3	CREATE VIEW `test`.`v3` AS select `v1`.`col1` AS `a`,`v2`.`col1` AS `b` from `test`.`v1` join `test`.`v2` where (`v1`.`col1` = `v2`.`col1`)
 drop view v3, v2, v1;
 drop table t2, t1;
 create function `f``1` () returns int return 5;
 create view v1 as select test.`f``1` ();
 show create view v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW `test`.`v1` AS select `test`.`f``1`() AS `test.``f````1`` ()`
 select * from v1;
 test.`f``1` ()
@@ -1186,10 +1186,10 @@ drop function x;
 create table t2 (col1 char collate latin1_german2_ci);
 create view v2 as select col1 collate latin1_german1_ci from t2;
 show create view v2;
-Table	Create Table
+View	Create View
 v2	CREATE VIEW `test`.`v2` AS select (`test`.`t2`.`col1` collate latin1_german1_ci) AS `col1 collate latin1_german1_ci` from `test`.`t2`
 show create view v2;
-Table	Create Table
+View	Create View
 v2	CREATE VIEW `test`.`v2` AS select (`test`.`t2`.`col1` collate latin1_german1_ci) AS `col1 collate latin1_german1_ci` from `test`.`t2`
 drop view v2;
 drop table t2;
@@ -1220,7 +1220,7 @@ drop view v1;
 drop table t1;
 create view v1 as select 99999999999999999999999999999999999999999999999999999 as col1;
 show create view v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW `test`.`v1` AS select 99999999999999999999999999999999999999999999999999999 AS `col1`
 drop view v1;
 create table t (c char);
@@ -1241,7 +1241,7 @@ drop view v1;
 drop table t1;
 create view v1 as select cast(1 as char(3));
 show create view v1;
-Table	Create Table
+View	Create View
 v1	CREATE VIEW `test`.`v1` AS select cast(1 as char(3) charset latin1) AS `cast(1 as char(3))`
 select * from v1;
 cast(1 as char(3))
@@ -1311,7 +1311,7 @@ a	a	a
 3	2	3
 3	3	3
 drop view v1;
-drop table t1;
+drop table t1, t2;
 create table t1 (s1 char);
 create view v1 as select s1 collate latin1_german1_ci as s1 from t1;
 insert into v1 values ('a');
@@ -1328,3 +1328,13 @@ s1
 c
 drop view v1;
 drop table t1;
+create table t1 (a int);
+create table t2 (a int);
+create view v1 as select * from t1;
+lock tables t1 read, v1 read;
+select * from v1;
+a
+select * from t2;
+ERROR HY000: Table 't2' was not locked with LOCK TABLES
+drop view v1;
+drop table t1, t2;

mysql-test/t/view.test

@@ -55,7 +55,7 @@ select v1.b from v1;
 # view with different algorithms (explain out put are differ)
 explain extended select c from v1;
 create algorithm=temptable view v2 (c) as select b+1 from t1;
-show create table v2;
+show create view v2;
 select c from v2;
 explain extended select c from v2;
 
@@ -268,19 +268,19 @@ show columns from mysqltest.v2;
 -- error 1345
 explain select c from mysqltest.v1;
 -- error 1142
-show create table mysqltest.v1;
+show create view mysqltest.v1;
 -- error 1345
 explain select c from mysqltest.v2;
 -- error 1142
-show create table mysqltest.v2;
+show create view mysqltest.v2;
 -- error 1345
 explain select c from mysqltest.v3;
 -- error 1142
-show create table mysqltest.v3;
+show create view mysqltest.v3;
 -- error 1345
 explain select c from mysqltest.v4;
 -- error 1142
-show create table mysqltest.v4;
+show create view mysqltest.v4;
 
 # allow to see one of underlaing table
 connection root;
@@ -289,32 +289,32 @@ connection user1;
 # EXPLAIN of view on above table works
 explain select c from mysqltest.v1;
 -- error 1142
-show create table mysqltest.v1;
+show create view mysqltest.v1;
 explain select c from mysqltest.v2;
 -- error 1142
-show create table mysqltest.v2;
+show create view mysqltest.v2;
 # but other EXPLAINs do not
 -- error 1345
 explain select c from mysqltest.v3;
 -- error 1142
-show create table mysqltest.v3;
+show create view mysqltest.v3;
 -- error 1345
 explain select c from mysqltest.v4;
 -- error 1142
-show create table mysqltest.v4;
+show create view mysqltest.v4;
 
 # allow to see any view in mysqltest database
 connection root;
 grant show view on mysqltest.* to mysqltest_1@localhost;
 connection user1;
 explain select c from mysqltest.v1;
-show create table mysqltest.v1;
+show create view mysqltest.v1;
 explain select c from mysqltest.v2;
-show create table mysqltest.v2;
+show create view mysqltest.v2;
 explain select c from mysqltest.v3;
-show create table mysqltest.v3;
+show create view mysqltest.v3;
 explain select c from mysqltest.v4;
-show create table mysqltest.v4;
+show create view mysqltest.v4;
 
 connection root;
 revoke all privileges on mysqltest.* from mysqltest_1@localhost;
@@ -1280,7 +1280,7 @@ create view v1 as select a from t1 where a > 1;
 select * from t1 left join (t2 as t, v1) on v1.a=t1.a;
 select * from t1 left join (t2 as t, t2) on t2.a=t1.a;
 drop view v1;
-drop table t1;
+drop table t1, t2;
 
 #
 # Collation with view update
@@ -1295,3 +1295,16 @@ update v1,t1 set v1.s1='c' where t1.s1=v1.s1;
 select * from v1;
 drop view v1;
 drop table t1;
+
+#
+# test view with LOCK TABLES (work around)
+#
+create table t1 (a int);
+create table t2 (a int);
+create view v1 as select * from t1;
+lock tables t1 read, v1 read;
+select * from v1;
+-- error 1100
+select * from t2;
+drop view v1;
+drop table t1, t2;

sql/sql_base.cc

@@ -906,6 +906,36 @@ TABLE *open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
 	goto reset;
       }
     }
+    /*
+      is it view?
+      (it is work around to allow to open view with locked tables,
+      real fix will be made after definition cache will be made)
+    */
+    {
+      char path[FN_REFLEN];
+      strxnmov(path, FN_REFLEN, mysql_data_home, "/", table_list->db, "/",
+               table_list->real_name, reg_ext, NullS);
+      (void) unpack_filename(path, path);
+      if (mysql_frm_type(path) == FRMTYPE_VIEW)
+      {
+        VOID(pthread_mutex_lock(&LOCK_open));
+        if (open_unireg_entry(thd, table, table_list->db,
+                              table_list->real_name,
+                              alias, table_list, mem_root))
+        {
+          table->next=table->prev=table;
+          free_cache_entry(table);
+        }
+        else
+        {
+          DBUG_ASSERT(table_list->view);
+          my_free((gptr)table, MYF(0));
+          VOID(pthread_mutex_unlock(&LOCK_open));
+          DBUG_RETURN(0); // VIEW
+        }
+        VOID(pthread_mutex_unlock(&LOCK_open));
+      }
+    }
     my_printf_error(ER_TABLE_NOT_LOCKED,ER(ER_TABLE_NOT_LOCKED),MYF(0),alias);
     DBUG_RETURN(0);
   }

sql/sql_show.cc

@@ -879,6 +879,7 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
              table_list->real_name, "VIEW");
     DBUG_RETURN(-1);
   }
+
   table= table_list->table;
 
   if ((table_list->view ?
@@ -887,10 +888,19 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
     DBUG_RETURN(-1);
 
   List<Item> field_list;
+  if (table_list->view)
+  {
+    field_list.push_back(new Item_empty_string("View",NAME_LEN));
+    field_list.push_back(new Item_empty_string("Create View",
+                                               max(buffer.length(),1024)));
+  }
+  else
+  {
     field_list.push_back(new Item_empty_string("Table",NAME_LEN));
     // 1024 is for not to confuse old clients
     field_list.push_back(new Item_empty_string("Create Table",
                                                max(buffer.length(),1024)));
+  }
 
   if (protocol->send_fields(&field_list,
                             Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF))