More test cases are added

Fixed bug 'using of alias with information schema tables in views'
removed compiler warnings

mysql-test/r/information_schema.result

@@ -442,6 +442,7 @@ v
 select sql_mode from information_schema.ROUTINES;
 sql_mode
 
+drop procedure px5;
 create table t1 (a int not null auto_increment,b int, primary key (a));
 insert into t1 values (1,1),(NULL,3),(NULL,4);
 select AUTO_INCREMENT from information_schema.tables where table_name = 't1';
@@ -508,3 +509,34 @@ g	int(11)	11	11	11	0
 h	double(10,3)	10	10	10	3
 i	double	22	22	22	NULL
 drop table t1;
+create table t115 as select table_name, column_name, column_type
+from information_schema.columns where table_name = 'proc';
+select * from t115;
+table_name	column_name	column_type
+proc	db	varchar(64)
+proc	name	varchar(64)
+proc	type	enum('FUNCTION','PROCEDURE')
+proc	specific_name	varchar(64)
+proc	language	enum('SQL')
+proc	sql_data_access	enum('CONTAINS_SQL','NO_SQL','READS_SQL_DATA','MODIFIES_SQL_DATA')
+proc	is_deterministic	enum('YES','NO')
+proc	security_type	enum('INVOKER','DEFINER')
+proc	param_list	blob
+proc	returns	varchar(64)
+proc	body	blob
+proc	definer	varchar(77)
+proc	created	timestamp
+proc	modified	timestamp
+proc	sql_mode	set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES','IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION','NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB','NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40','ANSI','NO_AUTO_VALUE_ON_ZERO')
+proc	comment	varchar(64)
+drop table t115;
+create view vk as select count(*) from information_schema.tables a;
+select * from vk;
+count(*)
+17
+drop view vk;
+create procedure p108 () begin declare c cursor for select data_type
+from information_schema.columns;  open c; open c; end;//
+call p108()//
+ERROR 24000: Cursor is already open
+drop procedure p108;

mysql-test/t/information_schema.test

@@ -218,6 +218,7 @@ call px5()//
 call px5()//
 delimiter ;//
 select sql_mode from information_schema.ROUTINES;
+drop procedure px5;
 
 create table t1 (a int not null auto_increment,b int, primary key (a));
 insert into t1 values (1,1),(NULL,3),(NULL,4);
@@ -252,3 +253,20 @@ select COLUMN_NAME,COLUMN_TYPE, CHARACTER_MAXIMUM_LENGTH,
  CHARACTER_OCTET_LENGTH, NUMERIC_PRECISION, NUMERIC_SCALE
 from information_schema.columns where table_name= 't1';
 drop table t1;
+
+create table t115 as select table_name, column_name, column_type
+from information_schema.columns where table_name = 'proc';
+select * from t115;
+drop table t115;
+
+create view vk as select count(*) from information_schema.tables a;
+select * from vk;
+drop view vk;
+
+delimiter //;
+create procedure p108 () begin declare c cursor for select data_type
+from information_schema.columns;  open c; open c; end;//
+--error 1325
+call p108()//
+delimiter ;//
+drop procedure p108;

sql/sql_select.cc

@@ -12885,8 +12885,9 @@ void st_table_list::print(THD *thd, String *str)
       str->append('.');
       if (schema_table)
       {
-        append_identifier(thd, str, alias, strlen(alias));
-        cmp_name= alias;
+        append_identifier(thd, str, schema_table_name,
+                          strlen(schema_table_name));
+        cmp_name= schema_table_name;
       }
       else
       {

sql/sql_show.cc

@@ -597,7 +597,7 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
   else
   {
     if (table_list->schema_table)
-      protocol->store(table_list->alias, system_charset_info);
+      protocol->store(table_list->schema_table_name, system_charset_info);
     else
       protocol->store(table->table_name, system_charset_info);
     if (store_create_info(thd, table_list, &buffer))
@@ -938,7 +938,7 @@ store_create_info(THD *thd, TABLE_LIST *table_list, String *packet)
   else
     packet->append("CREATE TABLE ", 13);
   if (table_list->schema_table)
-    alias= table_list->alias;
+    alias= table_list->schema_table_name;
   else
     alias= (lower_case_table_names == 2 ? table->table_name :
             table->real_name);
@@ -2193,7 +2193,7 @@ static int get_schema_tables_record(THD *thd, struct st_table_list *tables,
     tmp_buff= (show_table->table_charset ? show_table->
                table_charset->name : "default");
     table->field[17]->store(tmp_buff, strlen(tmp_buff), cs);
-    if (file->table_flags() & HA_HAS_CHECKSUM)
+    if (file->table_flags() & (ulong) HA_HAS_CHECKSUM)
     {
       table->field[18]->store((longlong) file->checksum());
       table->field[18]->set_notnull();
@@ -2282,7 +2282,7 @@ static int get_schema_column_record(THD *thd, struct st_table_list *tables,
         !wild_case_compare(system_charset_info, field->field_name,wild))
     {
       uint tmp_length;
-      char *tmp_buff;
+      const char *tmp_buff;
       byte *pos;
       uint flags=field->flags;
       char tmp[MAX_FIELD_WIDTH];
@@ -2298,7 +2298,7 @@ static int get_schema_column_record(THD *thd, struct st_table_list *tables,
       table->field[4]->store((longlong) count);
       field->sql_type(type);
       table->field[14]->store(type.ptr(), type.length(), cs);		
-      tmp_buff= strchr(type.ptr(),'(');
+      tmp_buff= strchr(type.ptr(), '(');
       table->field[7]->store(type.ptr(),
                              (tmp_buff ? tmp_buff - type.ptr() :
                               type.length()), cs);
@@ -3137,6 +3137,7 @@ int mysql_schema_table(THD *thd, LEX *lex, TABLE_LIST *table_list)
   }
   table->tmp_table= TMP_TABLE;
   table->grant.privilege= SELECT_ACL;
+  table_list->schema_table_name= table_list->real_name;
   table_list->real_name= table->real_name;
   table_list->table= table;
   table->next= thd->derived_tables;
@@ -3291,14 +3292,14 @@ ST_FIELD_INFO columns_fields_info[]=
   {"ORDINAL_POSITION", 21 , MYSQL_TYPE_LONG, 0, 0, 0},
   {"COLUMN_DEFAULT", NAME_LEN, MYSQL_TYPE_STRING, 0, 1, "Default"},
   {"IS_NULLABLE", 3, MYSQL_TYPE_STRING, 0, 0, "Null"},
-  {"DATA_TYPE", 40, MYSQL_TYPE_STRING, 0, 0, 0},
+  {"DATA_TYPE", 65535, MYSQL_TYPE_STRING, 0, 0, 0},
   {"CHARACTER_MAXIMUM_LENGTH", 21 , MYSQL_TYPE_LONG, 0, 0, 0},
   {"CHARACTER_OCTET_LENGTH", 21 , MYSQL_TYPE_LONG, 0, 0, 0},
   {"NUMERIC_PRECISION", 21 , MYSQL_TYPE_LONG, 0, 1, 0},
   {"NUMERIC_SCALE", 21 , MYSQL_TYPE_LONG, 0, 1, 0},
   {"CHARACTER_SET_NAME", 40, MYSQL_TYPE_STRING, 0, 1, 0},
   {"COLLATION_NAME", 40, MYSQL_TYPE_STRING, 0, 1, "Collation"},
-  {"COLUMN_TYPE", 40, MYSQL_TYPE_STRING, 0, 0, "Type"},
+  {"COLUMN_TYPE", 65535, MYSQL_TYPE_STRING, 0, 0, "Type"},
   {"COLUMN_KEY", 3, MYSQL_TYPE_STRING, 0, 0, "Key"},
   {"EXTRA", 20, MYSQL_TYPE_STRING, 0, 0, "Extra"},
   {"PRIVILEGES", 80, MYSQL_TYPE_STRING, 0, 0, "Privileges"},
@@ -3356,7 +3357,7 @@ ST_FIELD_INFO proc_fields_info[]=
   {"SECURITY_TYPE", 7, MYSQL_TYPE_STRING, 0, 0, "Security_type"},
   {"CREATED", 0, MYSQL_TYPE_TIMESTAMP, 0, 0, "Created"},
   {"LAST_ALTERED", 0, MYSQL_TYPE_TIMESTAMP, 0, 0, "Modified"},
-  {"SQL_MODE", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, 0},
+  {"SQL_MODE", 65535, MYSQL_TYPE_STRING, 0, 0, 0},
   {"ROUTINE_COMMENT", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Comment"},
   {"DEFINER", 77, MYSQL_TYPE_STRING, 0, 0, "Definer"},
   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}

sql/table.h

@@ -281,7 +281,7 @@ typedef struct st_table_list
   struct st_table_list *next_local;
   /* link in a global list of all queries tables */
   struct st_table_list *next_global, **prev_global;
-  char		*db, *alias, *real_name;
+  char		*db, *alias, *real_name, *schema_table_name;
   char          *option;                /* Used by cache index  */
   Item		*on_expr;		/* Used with outer join */
   COND_EQUAL    *cond_equal;            /* Used with outer join */

tests/client_test.c

@@ -7280,7 +7280,7 @@ static void test_explain_bug()
                        MYSQL_TYPE_STRING, 0, 0, "", 192, 0);
 
   verify_prepare_field(result, 1, "Type", "COLUMN_TYPE",
-                       MYSQL_TYPE_STRING, 0, 0, "", 120, 0);
+                       MYSQL_TYPE_BLOB, 0, 0, "", 193203, 0);
 
   verify_prepare_field(result, 2, "Null", "IS_NULLABLE",
                        MYSQL_TYPE_STRING, 0, 0, "", 9, 0);