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Fix for UNION and LEFT JOIN (Bug #386)

Browse Source 
Fixed wrong logging of Access denied error (Bug #398)


include/my_global.h:
  Fix for QNX
mysql-test/r/union.result:
  new test case
mysql-test/t/union.test:
  Test of bug in union and left join
mysys/my_seek.c:
  Safety fix to find out when pos gets a wrong value
sql/field.h:
  Fix for UNION and LEFT JOIN
sql/mysql_priv.h:
  Fix for UNION and LEFT JOIN
sql/sql_base.cc:
  Fix for UNION and LEFT JOIN
sql/sql_insert.cc:
  Fix for UNION and LEFT JOIN
sql/sql_parse.cc:
  Fixed wrong logging of Access denied error
sql/sql_union.cc:
  Fix for UNION and LEFT JOIN
sql/sql_update.cc:
  Fix for UNION and LEFT JOIN
This commit is contained in:
unknown
2003-05-13 18:58:26 +03:00
parent 4ccf66df87
commit dc1e55f819
11 changed files with 150 additions and 21 deletions
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2
include/my_global.h
View File

@ -361,7 +361,7 @@ typedef unsigned short ushort;
#define set_bits(type, bit_count) (sizeof(type)*8 <= (bit_count) ? ~(type) 0 : ((((type) 1) << (bit_count)) - (type) 1))
#define array_elements(A) ((uint) (sizeof(A)/sizeof(A[0])))
#ifndef HAVE_RINT
#define rint(A) floor((A)+0.5)
#define rint(A) floor((A)+((A) < 0) -0.5 : 0.5)
#endif
/* Define some general constants */

59
mysql-test/r/union.result
View File

@ -1,4 +1,4 @@
drop table if exists t1,t2,t3;
drop table if exists t1,t2,t3,t4,t5,t6;
CREATE TABLE t1 (a int not null, b char (10) not null);
insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
CREATE TABLE t2 (a int not null, b char (10) not null);
@ -202,3 +202,60 @@ a
11
set SQL_SELECT_LIMIT=DEFAULT;
drop table t1,t2;
CREATE TABLE t1 (
cid smallint(5) unsigned NOT NULL default '0',
cv varchar(250) NOT NULL default '',
PRIMARY KEY (cid),
UNIQUE KEY cv (cv)
) ;
INSERT INTO t1 VALUES (8,'dummy');
CREATE TABLE t2 (
cid bigint(20) unsigned NOT NULL auto_increment,
cap varchar(255) NOT NULL default '',
PRIMARY KEY (cid),
KEY cap (cap)
) ;
CREATE TABLE t3 (
gid bigint(20) unsigned NOT NULL auto_increment,
gn varchar(255) NOT NULL default '',
must tinyint(4) default NULL,
PRIMARY KEY (gid),
KEY gn (gn)
) ;
INSERT INTO t3 VALUES (1,'V1',NULL);
CREATE TABLE t4 (
uid bigint(20) unsigned NOT NULL default '0',
gid bigint(20) unsigned default NULL,
rid bigint(20) unsigned default NULL,
cid bigint(20) unsigned default NULL,
UNIQUE KEY m (uid,gid,rid,cid),
KEY uid (uid),
KEY rid (rid),
KEY cid (cid),
KEY container (gid,rid,cid)
) ;
INSERT INTO t4 VALUES (1,1,NULL,NULL);
CREATE TABLE t5 (
rid bigint(20) unsigned NOT NULL auto_increment,
rl varchar(255) NOT NULL default '',
PRIMARY KEY (rid),
KEY rl (rl)
) ;
CREATE TABLE t6 (
uid bigint(20) unsigned NOT NULL auto_increment,
un varchar(250) NOT NULL default '',
uc smallint(5) unsigned NOT NULL default '0',
PRIMARY KEY (uid),
UNIQUE KEY nc (un,uc),
KEY un (un)
) ;
INSERT INTO t6 VALUES (1,'test',8);
SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test";
uid rl g1 cid gg
1 NULL V1 NULL 1
SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t3.must IS NOT NULL AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test";
uid rl g1 cid gg
(SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t3.must IS NOT NULL AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test") UNION (SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test");
uid rl g1 cid gg
1 NULL V1 NULL 1
drop table t1,t2,t3,t4,t5,t6;

61
mysql-test/t/union.test
View File

@ -2,7 +2,7 @@
# Test of unions
#
drop table if exists t1,t2,t3;
drop table if exists t1,t2,t3,t4,t5,t6;
CREATE TABLE t1 (a int not null, b char (10) not null);
insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
CREATE TABLE t2 (a int not null, b char (10) not null);
@ -98,3 +98,62 @@ set SQL_SELECT_LIMIT=2;
(select * from t1 limit 1) union (select * from t2 limit 3);
set SQL_SELECT_LIMIT=DEFAULT;
drop table t1,t2;
#
# Test error with left join
#
CREATE TABLE t1 (
cid smallint(5) unsigned NOT NULL default '0',
cv varchar(250) NOT NULL default '',
PRIMARY KEY (cid),
UNIQUE KEY cv (cv)
) ;
INSERT INTO t1 VALUES (8,'dummy');
CREATE TABLE t2 (
cid bigint(20) unsigned NOT NULL auto_increment,
cap varchar(255) NOT NULL default '',
PRIMARY KEY (cid),
KEY cap (cap)
) ;
CREATE TABLE t3 (
gid bigint(20) unsigned NOT NULL auto_increment,
gn varchar(255) NOT NULL default '',
must tinyint(4) default NULL,
PRIMARY KEY (gid),
KEY gn (gn)
) ;
INSERT INTO t3 VALUES (1,'V1',NULL);
CREATE TABLE t4 (
uid bigint(20) unsigned NOT NULL default '0',
gid bigint(20) unsigned default NULL,
rid bigint(20) unsigned default NULL,
cid bigint(20) unsigned default NULL,
UNIQUE KEY m (uid,gid,rid,cid),
KEY uid (uid),
KEY rid (rid),
KEY cid (cid),
KEY container (gid,rid,cid)
) ;
INSERT INTO t4 VALUES (1,1,NULL,NULL);
CREATE TABLE t5 (
rid bigint(20) unsigned NOT NULL auto_increment,
rl varchar(255) NOT NULL default '',
PRIMARY KEY (rid),
KEY rl (rl)
) ;
CREATE TABLE t6 (
uid bigint(20) unsigned NOT NULL auto_increment,
un varchar(250) NOT NULL default '',
uc smallint(5) unsigned NOT NULL default '0',
PRIMARY KEY (uid),
UNIQUE KEY nc (un,uc),
KEY un (un)
) ;
INSERT INTO t6 VALUES (1,'test',8);
SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test";
SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t3.must IS NOT NULL AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test";
(SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t3.must IS NOT NULL AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test") UNION (SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t6.uc = t1.cid AND t1.cv = "dummy" AND t6.un = "test");
drop table t1,t2,t3,t4,t5,t6;

3
mysys/my_seek.c
View File

@ -15,6 +15,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysys_priv.h"
#include <assert.h>
/* Seek to position in file */
/*ARGSUSED*/
@ -27,6 +28,8 @@ my_off_t my_seek(File fd, my_off_t pos, int whence,
DBUG_PRINT("my",("Fd: %d Hpos: %lu Pos: %lu Whence: %d MyFlags: %d",
fd, (ulong) (((ulonglong) pos) >> 32), (ulong) pos,
whence, MyFlags));
DBUG_ASSERT(pos != MY_FILEPOS_ERROR); /* safety check */
newpos=lseek(fd, pos, whence);
if (newpos == (os_off_t) -1)
{

2
sql/field.h
View File

@ -122,6 +122,8 @@ public:
Field *tmp= (Field*) memdup_root(root,(char*) this,size_of());
if (tmp)
{
if (tmp->table->maybe_null)
tmp->flags&= ~NOT_NULL_FLAG;
tmp->table=new_table;
tmp->key_start=tmp->part_of_key=tmp->part_of_sortkey=0;
tmp->unireg_check=Field::NONE;

4
sql/mysql_priv.h
View File

@ -560,8 +560,8 @@ bool remove_table_from_cache(THD *thd, const char *db, const char *table,
bool return_if_owned_by_thd=0);
bool close_cached_tables(THD *thd, bool wait_for_refresh, TABLE_LIST *tables);
void copy_field_from_tmp_record(Field *field,int offset);
int fill_record(List<Item> &fields,List<Item> &values);
int fill_record(Field **field,List<Item> &values);
int fill_record(List<Item> &fields,List<Item> &values, bool ignore_errors);
int fill_record(Field **field,List<Item> &values, bool ignore_errors);
OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *wild);
/* sql_calc.cc */

8
sql/sql_base.cc
View File

@ -2112,7 +2112,7 @@ int setup_conds(THD *thd,TABLE_LIST *tables,COND **conds)
******************************************************************************/
int
fill_record(List<Item> &fields,List<Item> &values)
fill_record(List<Item> &fields,List<Item> &values, bool ignore_errors)
{
List_iterator_fast<Item> f(fields),v(values);
Item *value;
@ -2122,7 +2122,7 @@ fill_record(List<Item> &fields,List<Item> &values)
while ((field=(Item_field*) f++))
{
value=v++;
if (value->save_in_field(field->field, 0))
if (value->save_in_field(field->field, 0) && !ignore_errors)
DBUG_RETURN(1);
}
DBUG_RETURN(0);
@ -2130,7 +2130,7 @@ fill_record(List<Item> &fields,List<Item> &values)
int
fill_record(Field **ptr,List<Item> &values)
fill_record(Field **ptr,List<Item> &values, bool ignore_errors)
{
List_iterator_fast<Item> v(values);
Item *value;
@ -2140,7 +2140,7 @@ fill_record(Field **ptr,List<Item> &values)
while ((field = *ptr++))
{
value=v++;
if (value->save_in_field(field, 0))
if (value->save_in_field(field, 0) && !ignore_errors)
DBUG_RETURN(1);
}
DBUG_RETURN(0);

10
sql/sql_insert.cc
View File

@ -219,7 +219,7 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
if (fields.elements || !value_count)
{
restore_record(table,2); // Get empty record
if (fill_record(fields,*values) || check_null_fields(thd,table))
if (fill_record(fields, *values, 0) || check_null_fields(thd,table))
{
if (values_list.elements != 1)
{
@ -236,7 +236,7 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
restore_record(table,2); // Get empty record
else
table->record[0][0]=table->record[2][0]; // Fix delete marker
if (fill_record(table->field,*values))
if (fill_record(table->field, *values, 0))
{
if (values_list.elements != 1)
{
@ -1330,9 +1330,9 @@ bool select_insert::send_data(List<Item> &values)
return 0;
}
if (fields->elements)
fill_record(*fields,values);
fill_record(*fields, values, 1);
else
fill_record(table->field,values);
fill_record(table->field, values, 1);
if (write_record(table,&info))
return 1;
if (table->next_number_field) // Clear for next record
@ -1444,7 +1444,7 @@ bool select_create::send_data(List<Item> &values)
thd->offset_limit--;
return 0;
}
fill_record(field,values);
fill_record(field, values, 1);
if (write_record(table,&info))
return 1;
if (table->next_number_field) // Clear for next record

11
sql/sql_parse.cc
View File

@ -196,9 +196,17 @@ static bool check_user(THD *thd,enum_server_command command, const char *user,
thd->db=0;
thd->db_length=0;
USER_RESOURCES ur;
char tmp_passwd[SCRAMBLE_LENGTH];
if (passwd[0] && strlen(passwd) != SCRAMBLE_LENGTH)
return 1;
/*
Move password to temporary buffer as it may be stored in communication
buffer
*/
strmov(tmp_passwd, passwd);
passwd= tmp_passwd; // Use local copy
if (!(thd->user = my_strdup(user, MYF(0))))
{
send_error(net,ER_OUT_OF_RESOURCES);
@ -264,6 +272,7 @@ static bool check_user(THD *thd,enum_server_command command, const char *user,
}
else
send_ok(net); // Ready to handle questions
thd->password= test(passwd[0]); // Remember for error messages
return 0; // ok
}
@ -617,7 +626,6 @@ check_connections(THD *thd)
net->read_timeout=(uint) thd->variables.net_read_timeout;
if (check_user(thd,COM_CONNECT, user, passwd, db, 1))
return (-1);
thd->password=test(passwd[0]);
return 0;
}
@ -1007,7 +1015,6 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
decrease_user_connections(save_uc);
x_free((gptr) save_db);
x_free((gptr) save_user);
thd->password=test(passwd[0]);
break;
}

5
sql/sql_union.cc
View File

@ -110,7 +110,8 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
while ((item= it++))
if (item_list.push_back(item))
DBUG_RETURN(-1);
if (setup_fields(thd,first_table,item_list,0,0,1))
if (setup_tables(first_table) ||
setup_fields(thd,first_table,item_list,0,0,1))
DBUG_RETURN(-1);
}
@ -259,7 +260,7 @@ bool select_union::send_data(List<Item> &values)
return 0;
}
fill_record(table->field,values);
fill_record(table->field, values, 1);
if ((write_record(table,&info)))
{
if (create_myisam_from_heap(thd, table, tmp_table_param, info.last_errno,

6
sql/sql_update.cc
View File

@ -277,7 +277,7 @@ int mysql_update(THD *thd,
if (!(select && select->skipp_record()))
{
store_record(table,1);
if (fill_record(fields,values))
if (fill_record(fields, values, 0))
break; /* purecov: inspected */
found++;
if (compare_record(table, query_id))
@ -726,7 +726,7 @@ bool multi_update::send_data(List<Item> &not_used_values)
{
table->status|= STATUS_UPDATED;
store_record(table,1);
if (fill_record(*fields_for_table[offset], *values_for_table[offset]))
if (fill_record(*fields_for_table[offset], *values_for_table[offset],0 ))
DBUG_RETURN(1);
found++;
if (compare_record(table, thd->query_id))
@ -754,7 +754,7 @@ bool multi_update::send_data(List<Item> &not_used_values)
{
int error;
TABLE *tmp_table= tmp_tables[offset];
fill_record(tmp_table->field+1, *values_for_table[offset]);
fill_record(tmp_table->field+1, *values_for_table[offset], 1);
found++;
/* Store pointer to row */
memcpy((char*) tmp_table->field[0]->ptr,