fixed open_and_lock_tables result processing (all open_and_lock_tables revision)

fixed printing of COLLATE operation
(BUG#5155)


mysql-test/r/case.result:
  fixed printing of COLLATE operation
mysql-test/r/func_if.result:
  fixed printing of COLLATE operation
mysql-test/r/func_in.result:
  fixed printing of COLLATE operation
mysql-test/r/func_str.result:
  fixed printing of COLLATE operation
mysql-test/r/func_test.result:
  fixed printing of COLLATE operation
mysql-test/r/view.result:
  VIEW with collation
mysql-test/t/view.test:
  VIEW with collation
sql/item_strfunc.cc:
  fixed printing of COLLATE operation
sql/item_strfunc.h:
  fixed printing of COLLATE operation
sql/sp_head.cc:
  fixed open_and_lock_tables result processing
sql/sql_base.cc:
  fixed open_and_lock_tables result processing
sql/sql_delete.cc:
  fixed open_and_lock_tables result processing
sql/sql_help.cc:
  fixed open_and_lock_tables result processing
sql/sql_load.cc:
  fixed open_and_lock_tables result processing
sql/sql_parse.cc:
  fixed open_and_lock_tables result processing
sql/sql_prepare.cc:
  fixed open_and_lock_tables result processing
sql/sql_show.cc:
  fixed open_and_lock_tables result processing
sql/sql_update.cc:
  fixed open_and_lock_tables result processing

mysql-test/r/case.result

@@ -141,7 +141,7 @@ COALESCE('a' COLLATE latin1_bin,'b');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1003	select coalesce(1) AS `COALESCE(1)`,coalesce(1.0) AS `COALESCE(1.0)`,coalesce(_latin1'a') AS `COALESCE('a')`,coalesce(1,1.0) AS `COALESCE(1,1.0)`,coalesce(1,_latin1'1') AS `COALESCE(1,'1')`,coalesce(1.1,_latin1'1') AS `COALESCE(1.1,'1')`,coalesce((_latin1'a' collate _latin1'latin1_bin'),_latin1'b') AS `COALESCE('a' COLLATE latin1_bin,'b')`
+Note	1003	select coalesce(1) AS `COALESCE(1)`,coalesce(1.0) AS `COALESCE(1.0)`,coalesce(_latin1'a') AS `COALESCE('a')`,coalesce(1,1.0) AS `COALESCE(1,1.0)`,coalesce(1,_latin1'1') AS `COALESCE(1,'1')`,coalesce(1.1,_latin1'1') AS `COALESCE(1.1,'1')`,coalesce((_latin1'a' collate latin1_bin),_latin1'b') AS `COALESCE('a' COLLATE latin1_bin,'b')`
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (

mysql-test/r/func_if.result

@@ -43,7 +43,7 @@ explain extended select if(u=1,st,binary st) s from t1 where st like "%a%" order
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	Using where; Using filesort
 Warnings:
-Note	1003	select if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,(`test`.`t1`.`st` collate _latin1'BINARY')) AS `s` from `test`.`t1` where (`test`.`t1`.`st` like _latin1'%a%') order by if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,(`test`.`t1`.`st` collate _latin1'BINARY'))
+Note	1003	select if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,(`test`.`t1`.`st` collate BINARY)) AS `s` from `test`.`t1` where (`test`.`t1`.`st` like _latin1'%a%') order by if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,(`test`.`t1`.`st` collate BINARY))
 select nullif(u=0, 'test') from t1;
 nullif(u=0, 'test')
 NULL

mysql-test/r/func_in.result

@@ -146,7 +146,7 @@ explain extended select * from t1 where 'a' in (a,b,c collate latin1_bin);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (_latin1'a' in (`test`.`t1`.`a`,`test`.`t1`.`b`,(`test`.`t1`.`c` collate _latin1'latin1_bin')))
+Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (_latin1'a' in (`test`.`t1`.`a`,`test`.`t1`.`b`,(`test`.`t1`.`c` collate latin1_bin)))
 drop table t1;
 select '1.0' in (1,2);
 '1.0' in (1,2)

mysql-test/r/func_str.result

@@ -638,7 +638,7 @@ explain extended select md5('hello'), sha('abc'), sha1('abc'), soundex(''), 'moo
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1003	select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,(_latin1'HE' collate _latin1'BINARY') AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate _latin1'latin1_bin'),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n	\r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n	\r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n	\r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substr_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000))) AS `decode(encode(repeat("a",100000),"monty"),"monty")`
+Note	1003	select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,(_latin1'HE' collate BINARY) AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate latin1_bin),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n	\r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n	\r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n	\r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substr_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000))) AS `decode(encode(repeat("a",100000),"monty"),"monty")`
 SELECT lpad(12345, 5, "#");
 lpad(12345, 5, "#")
 12345

mysql-test/r/func_test.result

@@ -108,7 +108,7 @@ explain extended select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1003	select (_koi8r'a' = (_koi8r'A' collate _latin1'koi8r_general_ci')) AS `_koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci`
+Note	1003	select (_koi8r'a' = (_koi8r'A' collate koi8r_general_ci)) AS `_koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci`
 select _koi8r'a' = _koi8r'A' COLLATE koi8r_bin;
 _koi8r'a' = _koi8r'A' COLLATE koi8r_bin
 0

mysql-test/r/view.result

@@ -1183,3 +1183,13 @@ x ()
 5
 drop view v1;
 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
+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
+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;

mysql-test/t/view.test

@@ -1125,3 +1125,13 @@ create view v1 as select x ();
 select * from v1;
 drop view v1;
 drop function x;
+
+#
+# VIEW with collation
+#
+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;
+show create view v2;
+drop view v2;
+drop table t2;

sql/item_strfunc.cc

@@ -2274,6 +2274,18 @@ bool Item_func_set_collation::eq(const Item *item, bool binary_cmp) const
   return 1;
 }
 
+
+void Item_func_set_collation::print(String *str)
+{
+  str->append('(');
+  args[0]->print(str);
+  str->append(" collate ", 9);
+  DBUG_ASSERT(args[1]->basic_const_item() &&
+              args[1]->type() == Item::STRING_ITEM);
+  args[1]->str_value.print(str);
+  str->append(')');
+}
+
 String *Item_func_charset::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);

sql/item_strfunc.h

@@ -635,7 +635,7 @@ class Item_func_set_collation :public Item_str_func
   void fix_length_and_dec();
   bool eq(const Item *item, bool binary_cmp) const;
   const char *func_name() const { return "collate"; }
-  void print(String *str) { print_op(str); }
+  void print(String *str);
 };
 
 class Item_func_charset :public Item_str_func

sql/sp_head.cc

@@ -1192,7 +1192,7 @@ sp_instr_set::execute(THD *thd, uint *nextp)
   if (tables &&
       ((res= check_table_access(thd, SELECT_ACL, tables, 0)) ||
        (res= open_and_lock_tables(thd, tables))))
-    DBUG_RETURN(-1);
+    DBUG_RETURN(res);
 
   it= sp_eval_func_item(thd, m_value, m_type);
   if (! it)
@@ -1293,7 +1293,7 @@ sp_instr_jump_if::execute(THD *thd, uint *nextp)
   if (tables &&
       ((res= check_table_access(thd, SELECT_ACL, tables, 0)) ||
        (res= open_and_lock_tables(thd, tables))))
-    DBUG_RETURN(-1);
+    DBUG_RETURN(res);
 
   it= sp_eval_func_item(thd, m_expr, MYSQL_TYPE_TINY);
   if (!it)
@@ -1350,7 +1350,7 @@ sp_instr_jump_if_not::execute(THD *thd, uint *nextp)
   if (tables &&
       ((res= check_table_access(thd, SELECT_ACL, tables, 0)) ||
        (res= open_and_lock_tables(thd, tables))))
-    DBUG_RETURN(-1);
+    DBUG_RETURN(res);
 
   it= sp_eval_func_item(thd, m_expr, MYSQL_TYPE_TINY);
   if (! it)
@@ -1406,7 +1406,7 @@ sp_instr_freturn::execute(THD *thd, uint *nextp)
   if (tables &&
       ((res= check_table_access(thd, SELECT_ACL, tables, 0)) ||
        (res= open_and_lock_tables(thd, tables))))
-    DBUG_RETURN(-1);
+    DBUG_RETURN(res);
 
   it= sp_eval_func_item(thd, m_value, m_type);
   if (! it)

sql/sql_base.cc

@@ -1751,6 +1751,7 @@ int simple_open_n_lock_tables(THD *thd, TABLE_LIST *tables)
   RETURN
     0  - ok
     -1 - error
+    1  - error reported to user
 
   NOTE
     The lock will automaticly be freed by close_thread_tables()

sql/sql_delete.cc

@@ -39,8 +39,8 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, SQL_LIST *order,
   ha_rows	deleted;
   DBUG_ENTER("mysql_delete");
 
-  if ((open_and_lock_tables(thd, table_list)))
-    DBUG_RETURN(-1);
+  if ((error= open_and_lock_tables(thd, table_list)))
+    DBUG_RETURN(error);
   table= table_list->table;
   table->file->info(HA_STATUS_VARIABLE | HA_STATUS_NO_LOCK);
   thd->proc_info="init";

sql/sql_help.cc

@@ -640,11 +640,8 @@ int mysqld_help(THD *thd, const char *mask)
   uint mlen= strlen(mask);
   MEM_ROOT *mem_root= &thd->mem_root;
 
-  if (open_and_lock_tables(thd, tables))
-  {
-    res= -1;
+  if (res= open_and_lock_tables(thd, tables))
     goto end;
-  }
   /*
     Init tables and fields to be usable from items
 

sql/sql_load.cc

@@ -99,8 +99,9 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
     loaded is located
   */
   char *tdb= thd->db ? thd->db : db;		// Result is never null
-  bool transactional_table, log_delayed;
   ulong skip_lines= ex->skip_lines;
+  int res;
+  bool transactional_table, log_delayed;
   DBUG_ENTER("mysql_load");
 
 #ifdef EMBEDDED_LIBRARY
@@ -114,8 +115,8 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
     DBUG_RETURN(-1);
   }
   table_list->lock_type= lock_type;
-  if (open_and_lock_tables(thd, table_list))
-    DBUG_RETURN(-1);
+  if ((res= open_and_lock_tables(thd, table_list)))
+    DBUG_RETURN(res);
   /* TODO: add key check when we will support VIEWs in LOAD */
   if (!table_list->updatable)
   {

sql/sql_parse.cc

@@ -2136,7 +2136,7 @@ mysql_execute_command(THD *thd)
   case SQLCOM_DO:
     if (all_tables &&
 	((res= check_table_access(thd, SELECT_ACL, all_tables, 0)) ||
-		   (res= open_and_lock_tables(thd, all_tables))))
+         (res= open_and_lock_tables(thd, all_tables))))
 	break;
 
     res= mysql_do(thd, *lex->insert_list);
@@ -2400,7 +2400,6 @@ mysql_execute_command(THD *thd)
 
       if (!(res= open_and_lock_tables(thd, select_tables)))
       {
-	res= -1;				// If error
         if ((result= new select_create(create_table,
 				       &lex->create_info,
 				       lex->create_list,

sql/sql_prepare.cc

@@ -897,10 +897,10 @@ static int mysql_test_insert(Prepared_statement *stmt,
      tables & preparation procedure
   */
   thd->allocate_temporary_memory_pool_for_ps_preparing();
-  if (open_and_lock_tables(thd, table_list))
+  if ((res= open_and_lock_tables(thd, table_list)))
   {
     thd->free_temporary_memory_pool_for_ps_preparing();
-    DBUG_RETURN(-1);
+    DBUG_RETURN(res);
   }
 
   if ((values= its++))
@@ -969,9 +969,7 @@ static int mysql_test_update(Prepared_statement *stmt,
   */
   thd->allocate_temporary_memory_pool_for_ps_preparing();
 
-  if (open_and_lock_tables(thd, table_list))
-    res= -1;
-  else
+  if (!(res= open_and_lock_tables(thd, table_list)))
   {
     if (!(res= mysql_prepare_update(thd, table_list,
 				    &select->where,
@@ -1030,9 +1028,7 @@ static int mysql_test_delete(Prepared_statement *stmt,
   */
   thd->allocate_temporary_memory_pool_for_ps_preparing();
 
-  if (open_and_lock_tables(thd, table_list))
-    res= -1;
-  else
+  if (!(res= open_and_lock_tables(thd, table_list)))
   {
     res= mysql_prepare_delete(thd, table_list, &lex->select_lex.where);
     lex->unit.cleanup();
@@ -1065,6 +1061,7 @@ static int mysql_test_select(Prepared_statement *stmt,
   THD *thd= stmt->thd;
   LEX *lex= stmt->lex;
   SELECT_LEX_UNIT *unit= &lex->unit;
+  int res;
 
   DBUG_ENTER("mysql_test_select");
 
@@ -1084,11 +1081,11 @@ static int mysql_test_select(Prepared_statement *stmt,
      tables & preparation procedure
   */
   thd->allocate_temporary_memory_pool_for_ps_preparing();
-  if (open_and_lock_tables(thd, tables))
+  if ((res= open_and_lock_tables(thd, tables)))
   {
-    send_error(thd);
     goto err;
   }
+  res= 1;
 
   thd->used_tables= 0;                        // Updated by setup_fields
 
@@ -1126,7 +1123,7 @@ static int mysql_test_select(Prepared_statement *stmt,
   unit->cleanup();
 err:
   thd->free_temporary_memory_pool_for_ps_preparing();
-  DBUG_RETURN(1);
+  DBUG_RETURN(res);
 }
 
 

sql/sql_show.cc

@@ -497,6 +497,7 @@ int mysqld_extend_show_tables(THD *thd,const char *db,const char *wild)
   TABLE *table;
   Protocol *protocol= thd->protocol;
   TIME time;
+  int res;
   DBUG_ENTER("mysqld_extend_show_tables");
 
   (void) sprintf(path,"%s/%s",mysql_data_home,db);
@@ -554,13 +555,18 @@ int mysqld_extend_show_tables(THD *thd,const char *db,const char *wild)
     table_list.select_lex= &thd->lex->select_lex;
     if (lower_case_table_names)
       my_casedn_str(files_charset_info, file_name);
-    if (open_and_lock_tables(thd, &table_list))
+    if ((res= open_and_lock_tables(thd, &table_list)))
     {
       for (uint i=2 ; i < field_list.elements ; i++)
         protocol->store_null();
-      // Send error to Comment field
-      protocol->store(thd->net.last_error, system_charset_info);
-      thd->clear_error();
+      // Send error to Comment field if possible
+      if (res < 0)
+      {
+        protocol->store(thd->net.last_error, system_charset_info);
+        thd->clear_error();
+      }
+      else
+        DBUG_RETURN(1)
     }
     else if (table_list.view)
     {
@@ -695,14 +701,16 @@ mysqld_show_fields(THD *thd, TABLE_LIST *table_list,const char *wild,
   char tmp[MAX_FIELD_WIDTH];
   Item *item;
   Protocol *protocol= thd->protocol;
+  int res;
   DBUG_ENTER("mysqld_show_fields");
   DBUG_PRINT("enter",("db: %s  table: %s",table_list->db,
                       table_list->real_name));
 
   table_list->lock_type= TL_UNLOCK;
-  if (open_and_lock_tables(thd, table_list))
+  if ((res= open_and_lock_tables(thd, table_list)))
   {
-    send_error(thd);
+    if (res < 0)
+      send_error(thd);
     DBUG_RETURN(1);
   }
   table= table_list->table;
@@ -836,14 +844,16 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
   Protocol *protocol= thd->protocol;
   char buff[2048];
   String buffer(buff, sizeof(buff), system_charset_info);
+  int res;
   DBUG_ENTER("mysqld_show_create");
   DBUG_PRINT("enter",("db: %s  table: %s",table_list->db,
                       table_list->real_name));
 
   /* Only one table for now, but VIEW can involve several tables */
-  if (open_and_lock_tables(thd, table_list))
+  if ((res= open_and_lock_tables(thd, table_list)))
   {
-    send_error(thd);
+    if (res < 0)
+      send_error(thd);
     DBUG_RETURN(1);
   }
   /* TODO: add environment variables show when it become possible */

sql/sql_update.cc

@@ -113,8 +113,8 @@ int mysql_update(THD *thd,
   LINT_INIT(used_index);
   LINT_INIT(timestamp_query_id);
 
-  if ((open_and_lock_tables(thd, table_list)))
-    DBUG_RETURN(-1);
+  if ((error= open_and_lock_tables(thd, table_list)))
+    DBUG_RETURN(error);
   thd->proc_info="init";
   table= table_list->table;
   table->file->info(HA_STATUS_VARIABLE | HA_STATUS_NO_LOCK);