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Fix for Bug#3183

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This commit is contained in:
sergefp@mysql.com 2004-03-15 23:11:58 +03:00
parent 1631ba625f
commit 3d2794ae9a
5 changed files with 50 additions and 0 deletions
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20
mysql-test/r/index_merge.result
View File

@ -314,4 +314,24 @@ key1 key2 key3 key4 key5 key6 key7 key8 key9 keyA keyB keyC
11 11 11 11 11 11 11 1013 11 11 11 11
12 12 12 12 12 12 12 1012 12 12 12 12
1016 1016 1016 1016 1016 1016 1016 8 1016 1016 1016 1016
explain select * from t0 where key1 < 3 or key2 < 4;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 7 Using where
select * from t0 where key1 < 3 or key2 < 4;
key1 key2 key3 key4 key5 key6 key7 key8
1 1 1 1 1 1 1 1023
2 2 2 2 2 2 2 1022
3 3 3 3 3 3 3 1021
update t0 set key8=123 where key1 < 3 or key2 < 4;
select * from t0 where key1 < 3 or key2 < 4;
key1 key2 key3 key4 key5 key6 key7 key8
1 1 1 1 1 1 1 123
2 2 2 2 2 2 2 123
3 3 3 3 3 3 3 123
delete from t0 where key1 < 3 or key2 < 4;
select * from t0 where key1 < 3 or key2 < 4;
key1 key2 key3 key4 key5 key6 key7 key8
select count(*) from t0;
count(*)
1021
drop table t0, t1, t2, t3, t4;

10
mysql-test/t/index_merge.test
View File

@ -267,5 +267,15 @@ select * from t3 where
key5=5 or key6=6 or key7=7 or key8=8 or
key9=9 or keyA=10 or keyB=11 or keyC=12;
# Test for Bug#3183
explain select * from t0 where key1 < 3 or key2 < 4;
select * from t0 where key1 < 3 or key2 < 4;
update t0 set key8=123 where key1 < 3 or key2 < 4;
select * from t0 where key1 < 3 or key2 < 4;
delete from t0 where key1 < 3 or key2 < 4;
select * from t0 where key1 < 3 or key2 < 4;
select count(*) from t0;
drop table t0, t1, t2, t3, t4;

9
sql/opt_range.h
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@ -87,7 +87,16 @@ public:
QUICK_SELECT_I();
virtual ~QUICK_SELECT_I(){};
/*
Call init() immediately after creation of quick select. if init() call
fails, reset() or get_next() must not be called.
*/
virtual int init() = 0;
/*
Call reset() before first get_next call. get_next must not be called if
reset() call fails.
*/
virtual int reset(void) = 0;
virtual int get_next() = 0; /* get next record to retrieve */
virtual bool reverse_sorted() = 0;

7
sql/sql_delete.cc
View File

@ -150,6 +150,13 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, SQL_LIST *order,
select= 0;
}
/* If quick select is used, initialize it before retrieving rows. */
if (select && select->quick && select->quick->reset())
{
delete select;
free_underlaid_joins(thd, &thd->lex->select_lex);
DBUG_RETURN(-1); // This will force out message
}
init_read_record(&info,thd,table,select,1,1);
deleted=0L;
init_ftfuncs(thd, &thd->lex->select_lex, 1);

4
sql/sql_update.cc
View File

@ -246,7 +246,11 @@ int mysql_update(THD *thd,
DISK_BUFFER_SIZE, MYF(MY_WME)))
goto err;
/* If quick select is used, initialize it before retrieving rows. */
if (select && select->quick && select->quick->reset())
goto err;
init_read_record(&info,thd,table,select,0,1);
thd->proc_info="Searching rows for update";
uint tmp_limit= limit;