diff options
Diffstat (limited to 'mysql-test/r/range.result')
| -rw-r--r-- | mysql-test/r/range.result | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/mysql-test/r/range.result b/mysql-test/r/range.result index 146d250d687..d41bfaa2c67 100644 --- a/mysql-test/r/range.result +++ b/mysql-test/r/range.result @@ -712,14 +712,14 @@ INSERT INTO t1 VALUES 'd8c4177d09f8b11f5.52725522'); EXPLAIN SELECT s.oxid FROM t1 v, t1 s -WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND +WHERE v.oxrootid ='d8c4177d09f8b11f5.52725521' AND s.oxleft > v.oxleft AND s.oxleft < v.oxright; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE v ref OXLEFT,OXRIGHT,OXROOTID OXROOTID 34 const 5 Using index condition 1 SIMPLE s ALL OXLEFT NULL NULL NULL 12 Range checked for each record (index map: 0x4) SELECT s.oxid FROM t1 v, t1 s -WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND +WHERE v.oxrootid ='d8c4177d09f8b11f5.52725521' AND s.oxleft > v.oxleft AND s.oxleft < v.oxright; oxid @@ -728,6 +728,11 @@ d8c4177d206a333d2.74422679 d8c4177d225791924.30714720 d8c4177d2380fc201.39666693 d8c4177d24ccef970.14957924 +d8c4177d151affab2.81582771 +d8c4177d206a333d2.74422678 +d8c4177d225791924.30714721 +d8c4177d2380fc201.39666694 +d8c4177d24ccef970.14957925 DROP TABLE t1; create table t1 ( c1 char(10), c2 char(10), c3 char(10), c4 char(10), @@ -1590,6 +1595,8 @@ NULL Warnings: Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date +Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date +Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date SELECT str_to_date('2007-10-00', '%Y-%m-%d') BETWEEN '' AND '2007/10/20'; str_to_date('2007-10-00', '%Y-%m-%d') BETWEEN '' AND '2007/10/20' 1 @@ -1885,6 +1892,46 @@ AAA AAA AAA AAAA AAAA AAAA AAAAA AAAAA AAAAA DROP TABLE t1; +# +# mdev-4894: Poor performance with unnecessary +# (bug#70021) 'Range checked for each record' +# +create table t1( key1 int not null, INDEX i1(key1) ); +insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8); +insert into t1 select key1+8 from t1; +insert into t1 select key1+16 from t1; +insert into t1 select key1+32 from t1; +insert into t1 select key1+64 from t1; +insert into t1 select key1+128 from t1; +insert into t1 select key1+256 from t1; +insert into t1 select key1+512 from t1; +alter table t1 add key2 int not null, add index i2(key2); +update t1 set key2=key1; +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status OK +create table t2 (a int); +insert into t2 values (1),(2),(3),(4),(5),(6),(7),(8); +insert into t2 select a+16 from t2; +insert into t2 select a+32 from t2; +insert into t2 select a+64 from t2; +explain +select count(*) from t2 left join t1 on (t1.key1 < 3 or t1.key1 > 1020) and t1.key2 < 1000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 64 +1 SIMPLE t1 range i1,i2 i1 4 NULL 78 Using where; Using join buffer (flat, BNL join) +select count(*) from t2 left join t1 on (t1.key1 < 3 or t1.key1 > 1020) and t1.key2 < 1000; +count(*) +128 +explain +select count(*) from t2 left join t1 on (t1.key1 < 3 or t1.key1 > 1020) and t1.key2 < t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 64 +1 SIMPLE t1 range i1,i2 i1 4 NULL 78 Using where; Using join buffer (flat, BNL join) +select count(*) from t2 left join t1 on (t1.key1 < 3 or t1.key1 > 1020) and t1.key2 < t2.a; +count(*) +126 +drop table t1,t2; End of 5.1 tests # # LP Bug #533117: Wrong use_count in SEL_ARG trees |