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Fix of newly introduced bug in ORDER BY when one has a constant in the select list.

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mysql-test/r/order_by.result:
  Added new test
mysql-test/t/order_by.test:
  Added new test
This commit is contained in:
unknown
2002-09-24 21:23:56 +03:00
parent 543aa1cb2b
commit a225dfa2e9
3 changed files with 78 additions and 3 deletions
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35
mysql-test/r/order_by.result
View File

@ -471,3 +471,38 @@ table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
t3 eq_ref PRIMARY PRIMARY 2 t1.skr 1 where used
drop table t1,t2,t3;
CREATE TABLE t1 (
`titre` char(80) NOT NULL default '',
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
`date` datetime NOT NULL default '0000-00-00 00:00:00',
`auteur` char(35) NOT NULL default '',
`icone` tinyint(2) unsigned NOT NULL default '0',
`lastauteur` char(35) NOT NULL default '',
`nbrep` smallint(6) unsigned NOT NULL default '0',
`dest` char(35) NOT NULL default '',
`lu` tinyint(1) unsigned NOT NULL default '0',
`vue` mediumint(8) unsigned NOT NULL default '0',
`ludest` tinyint(1) unsigned NOT NULL default '0',
`ouvert` tinyint(1) unsigned NOT NULL default '1',
PRIMARY KEY (`numeropost`),
KEY `date` (`date`),
KEY `dest` (`dest`,`ludest`),
KEY `auteur` (`auteur`,`lu`),
KEY `auteur_2` (`auteur`,`date`),
KEY `dest_2` (`dest`,`date`)
) CHECKSUM=1;
CREATE TABLE t2 (
`numeropost` mediumint(8) unsigned NOT NULL default '0',
`pseudo` char(35) NOT NULL default '',
PRIMARY KEY (`numeropost`,`pseudo`),
KEY `pseudo` (`pseudo`)
);
INSERT INTO t1 (titre,auteur,dest) VALUES ('test','joce','bug');
INSERT INTO t2 (numeropost,pseudo) VALUES (1,'joce'),(1,'bug');
SELECT titre,t1.numeropost,auteur,icone,nbrep,0,date,vue,ouvert,lastauteur,dest FROM t2 LEFT JOIN t1 USING(numeropost) WHERE t2.pseudo='joce' ORDER BY date DESC LIMIT 0,30;
titre numeropost auteur icone nbrep 0 date vue ouvert lastauteur dest
test 1 joce 0 0 0 0000-00-00 00:00:00 0 1 bug
SELECT titre,t1.numeropost,auteur,icone,nbrep,'0',date,vue,ouvert,lastauteur,dest FROM t2 LEFT JOIN t1 USING(numeropost) WHERE t2.pseudo='joce' ORDER BY date DESC LIMIT 0,30;
titre numeropost auteur icone nbrep 0 date vue ouvert lastauteur dest
test 1 joce 0 0 0 0000-00-00 00:00:00 0 1 bug
drop table t1,t2;

38
mysql-test/t/order_by.test
View File

@ -292,3 +292,41 @@ EXPLAIN SELECT t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t3.skr,t1.gid;
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr;
drop table t1,t2,t3;
#
# Test of bug when doing an ORDER BY with const items
#
CREATE TABLE t1 (
`titre` char(80) NOT NULL default '',
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
`date` datetime NOT NULL default '0000-00-00 00:00:00',
`auteur` char(35) NOT NULL default '',
`icone` tinyint(2) unsigned NOT NULL default '0',
`lastauteur` char(35) NOT NULL default '',
`nbrep` smallint(6) unsigned NOT NULL default '0',
`dest` char(35) NOT NULL default '',
`lu` tinyint(1) unsigned NOT NULL default '0',
`vue` mediumint(8) unsigned NOT NULL default '0',
`ludest` tinyint(1) unsigned NOT NULL default '0',
`ouvert` tinyint(1) unsigned NOT NULL default '1',
PRIMARY KEY (`numeropost`),
KEY `date` (`date`),
KEY `dest` (`dest`,`ludest`),
KEY `auteur` (`auteur`,`lu`),
KEY `auteur_2` (`auteur`,`date`),
KEY `dest_2` (`dest`,`date`)
) CHECKSUM=1;
CREATE TABLE t2 (
`numeropost` mediumint(8) unsigned NOT NULL default '0',
`pseudo` char(35) NOT NULL default '',
PRIMARY KEY (`numeropost`,`pseudo`),
KEY `pseudo` (`pseudo`)
);
INSERT INTO t1 (titre,auteur,dest) VALUES ('test','joce','bug');
INSERT INTO t2 (numeropost,pseudo) VALUES (1,'joce'),(1,'bug');
SELECT titre,t1.numeropost,auteur,icone,nbrep,0,date,vue,ouvert,lastauteur,dest FROM t2 LEFT JOIN t1 USING(numeropost) WHERE t2.pseudo='joce' ORDER BY date DESC LIMIT 0,30;
SELECT titre,t1.numeropost,auteur,icone,nbrep,'0',date,vue,ouvert,lastauteur,dest FROM t2 LEFT JOIN t1 USING(numeropost) WHERE t2.pseudo='joce' ORDER BY date DESC LIMIT 0,30;
drop table t1,t2;

8
sql/sql_select.cc
View File

@ -639,7 +639,8 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
DBUG_PRINT("info",("Creating tmp table"));
thd->proc_info="Creating tmp table";
join.tmp_table_param.hidden_field_count= all_fields.elements- fields.elements;
join.tmp_table_param.hidden_field_count= (all_fields.elements -
fields.elements);
if (!(tmp_table =
create_tmp_table(thd,&join.tmp_table_param,all_fields,
((!simple_group && !procedure &&
@ -3598,7 +3599,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
List_iterator_fast<Item> li(fields);
Item *item;
Field **tmp_from_field=from_field;
for(uint field_no=0; ((item=li++)); field_no++)
while ((item=li++))
{
Item::Type type=item->type();
if (not_all_columns)
@ -3613,7 +3614,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
param->using_indirect_summary_function=1;
continue;
}
if (item->const_item() && field_no >= hidden_field_count)
if (item->const_item() && (int) hidden_field_count <= 0)
continue; // We don't have to store this
}
if (type == Item::SUM_FUNC_ITEM && !group && !save_sum_fields)
@ -3669,6 +3670,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
if (!--hidden_field_count)
hidden_null_count=null_count;
}
DBUG_ASSERT(field_count >= (uint) (reg_field - table->field));
field_count= (uint) (reg_field - table->field);
/* If result table is small; use a heap */