database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Addemdum for bug #685952.

Browse Source 
Also:
Changed the value of TIME_FOR_COMPARE_ROWID to make it the same as for MWL 21.
Changed some queries in range_vs_index_merge.test to make them generate
the same plans as earlier.
This commit is contained in:
Igor Babaev
2010-12-09 11:06:32 -08:00
parent f960f2334d
commit afcefa97d9
7 changed files with 129 additions and 314 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
mysql-test/include/index_merge1.inc
View File

@ -194,7 +194,7 @@ alter table t2 add index i321(key3, key2, key1);
explain select key3 from t2 where key1 = 100 or key2 = 100; explain select key3 from t2 where key1 = 100 or key2 = 100;
# index_merge vs 'index', 'index' is better. # index_merge vs 'index', 'index' is better.
explain select key3 from t2 where key1 <100 or key2 < 100; explain select key3 from t2 where key1 < 500 or key2 < 500;
# index_merge vs 'all', index_merge is better. # index_merge vs 'all', index_merge is better.
explain select key7 from t2 where key1 <100 or key2 < 100; explain select key7 from t2 where key1 <100 or key2 < 100;

4
mysql-test/r/index_merge_myisam.result
View File

@ -203,12 +203,12 @@ alter table t2 add index i321(key3, key2, key1);
explain select key3 from t2 where key1 = 100 or key2 = 100; explain select key3 from t2 where key1 = 100 or key2 = 100;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index_merge i1_3,i2_3 i1_3,i2_3 4,4 NULL 2 Using sort_union(i1_3,i2_3); Using where 1 SIMPLE t2 index_merge i1_3,i2_3 i1_3,i2_3 4,4 NULL 2 Using sort_union(i1_3,i2_3); Using where
explain select key3 from t2 where key1 <100 or key2 < 100; explain select key3 from t2 where key1 < 500 or key2 < 500;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index i1_3,i2_3 i321 12 NULL 1024 Using where; Using index 1 SIMPLE t2 index i1_3,i2_3 i321 12 NULL 1024 Using where; Using index
explain select key7 from t2 where key1 <100 or key2 < 100; explain select key7 from t2 where key1 <100 or key2 < 100;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL i1_3,i2_3 NULL NULL NULL 1024 Using where 1 SIMPLE t2 index_merge i1_3,i2_3 i1_3,i2_3 4,4 NULL 188 Using sort_union(i1_3,i2_3); Using where
create table t4 ( create table t4 (
key1a int not null, key1a int not null,
key1b int not null, key1b int not null,

186
mysql-test/r/range_vs_index_merge.result
View File

@ -71,9 +71,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 459 Using where 1 SIMPLE City range Population Population 4 NULL 459 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE (Population > 101000 AND Population < 103000); WHERE (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 81 Using where 1 SIMPLE City range Population Population 4 NULL 39 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')); WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'));
@ -88,9 +88,9 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Population 4 NULL 81 Using where 1 SIMPLE City range Population,Country,Name Population 4 NULL 39 Using where
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 115000); AND (Population > 101000 AND Population < 115000);
@ -153,24 +153,20 @@ ID Name Country Population
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
ID Name Country Population ID Name Country Population
637 Mit Ghamr EGY 101801 637 Mit Ghamr EGY 101801
707 Marbella ESP 101144 707 Marbella ESP 101144
3411 Ceyhan TUR 102412
3792 Tartu EST 101246 3792 Tartu EST 101246
4027 Cape Coral USA 102286
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
ID Name Country Population ID Name Country Population
707 Marbella ESP 101144 707 Marbella ESP 101144
3792 Tartu EST 101246 3792 Tartu EST 101246
4032 Cambridge USA 101355 4032 Cambridge USA 101355
637 Mit Ghamr EGY 101801 637 Mit Ghamr EGY 101801
4027 Cape Coral USA 102286
3411 Ceyhan TUR 102412
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (Name < 'Ac'); SELECT * FROM City WHERE (Name < 'Ac');
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
@ -328,15 +324,15 @@ ID Name Country Population
1003 Pemalang IDN 103500 1003 Pemalang IDN 103500
2663 Río Bravo MEX 103901 2663 Río Bravo MEX 103901
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 50) OR (ID BETWEEN 100 AND 110); SELECT * FROM City WHERE (ID < 10) OR (ID BETWEEN 100 AND 110);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 61 Using where 1 SIMPLE City range PRIMARY PRIMARY 4 NULL 21 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 300 AND 600); SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 100 AND 200);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 501 Using where 1 SIMPLE City range PRIMARY PRIMARY 4 NULL 201 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1800); SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1500);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ALL PRIMARY NULL NULL NULL 4079 Using where 1 SIMPLE City ALL PRIMARY NULL NULL NULL 4079 Using where
EXPLAIN EXPLAIN
@ -353,27 +349,27 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 72 Using where 1 SIMPLE City range Name Name 35 NULL 72 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 61 Using where 1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 21 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 128 Using sort_union(Name,Country,Population); Using where 1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 128 Using sort_union(Name,Country,Population); Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 600) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 128 Using sort_union(Name,Country,Population); Using where 1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 128 Using sort_union(Name,Country,Population); Using where
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
@ -382,15 +378,10 @@ ID Name Country Population
3 Herat AFG 186800 3 Herat AFG 186800
4 Mazar-e-Sharif AFG 127800 4 Mazar-e-Sharif AFG 127800
7 Haag NLD 440900 7 Haag NLD 440900
16 Haarlem NLD 148772
25 Haarlemmermeer NLD 110722
31 Heerlen NLD 95052
33 Willemstad ANT 2345
34 Tirana ALB 270000
100 Paraná ARG 207041 100 Paraná ARG 207041
102 Posadas ARG 201273 102 Posadas ARG 201273
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
@ -399,16 +390,11 @@ ID Name Country Population
3 Herat AFG 186800 3 Herat AFG 186800
4 Mazar-e-Sharif AFG 127800 4 Mazar-e-Sharif AFG 127800
7 Haag NLD 440900 7 Haag NLD 440900
16 Haarlem NLD 148772
25 Haarlemmermeer NLD 110722
31 Heerlen NLD 95052
33 Willemstad ANT 2345
34 Tirana ALB 270000
100 Paraná ARG 207041 100 Paraná ARG 207041
102 Posadas ARG 201273 102 Posadas ARG 201273
SELECT * FROM City USE INDEX() SELECT * FROM City USE INDEX()
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -463,13 +449,9 @@ ID Name Country Population
1468 Palermo ITA 683794 1468 Palermo ITA 683794
1478 Padova ITA 211391 1478 Padova ITA 211391
1484 Parma ITA 168717 1484 Parma ITA 168717
1530 Kingston JAM 103962
1747 Toda JPN 103969
1748 Tajimi JPN 103171
1785 Ibb YEM 103300
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -524,13 +506,9 @@ ID Name Country Population
1468 Palermo ITA 683794 1468 Palermo ITA 683794
1478 Padova ITA 211391 1478 Padova ITA 211391
1484 Parma ITA 168717 1484 Parma ITA 168717
1530 Kingston JAM 103962
1747 Toda JPN 103969
1748 Tajimi JPN 103171
1785 Ibb YEM 103300
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -555,25 +533,15 @@ ID Name Country Population
66 Sharja ARE 320095 66 Sharja ARE 320095
67 al-Ayn ARE 225970 67 al-Ayn ARE 225970
68 Ajman ARE 114395 68 Ajman ARE 114395
100 Paraná ARG 207041
129 Oranjestad ABW 29034 129 Oranjestad ABW 29034
167 Jamalpur BGD 103556
168 Pabna BGD 103277
189 Parakou BEN 103577
191 Hamilton BMU 1200 191 Hamilton BMU 1200
339 Passo Fundo BRA 166343
364 Parnaíba BRA 129756
372 Paranaguá BRA 126076
379 Palmas BRA 121919
386 Patos de Minas BRA 119262
411 Guaratinguetá BRA 103433
412 Cachoeirinha BRA 103240
413 Codó BRA 103153
424 Passos BRA 98570
430 Paulo Afonso BRA 97291
435 Parnamirim BRA 96210
448 Patos BRA 90519
451 Palhoça BRA 89465
517 Oldham GBR 103931
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -598,22 +566,12 @@ ID Name Country Population
66 Sharja ARE 320095 66 Sharja ARE 320095
67 al-Ayn ARE 225970 67 al-Ayn ARE 225970
68 Ajman ARE 114395 68 Ajman ARE 114395
100 Paraná ARG 207041
129 Oranjestad ABW 29034 129 Oranjestad ABW 29034
167 Jamalpur BGD 103556
168 Pabna BGD 103277
189 Parakou BEN 103577
191 Hamilton BMU 1200 191 Hamilton BMU 1200
339 Passo Fundo BRA 166343
364 Parnaíba BRA 129756
372 Paranaguá BRA 126076
379 Palmas BRA 121919
386 Patos de Minas BRA 119262
411 Guaratinguetá BRA 103433
412 Cachoeirinha BRA 103240
413 Codó BRA 103153
424 Passos BRA 98570
430 Paulo Afonso BRA 97291
435 Parnamirim BRA 96210
448 Patos BRA 90519
451 Palhoça BRA 89465
517 Oldham GBR 103931
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Population > 101000 AND Population < 102000; SELECT * FROM City WHERE Population > 101000 AND Population < 102000;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
@ -734,6 +692,10 @@ SELECT * FROM City WHERE Country='USA';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation Country 3 const 267 Using where 1 SIMPLE City ref Country,CountryPopulation Country 3 const 267 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='FIN';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation Country 3 const 6 Using where
EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%')
AND Country='USA'; AND Country='USA';
@ -742,9 +704,9 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Population,Country,Name,CountryPopulation Country 3 const 267 Using where 1 SIMPLE City ref Population,Country,Name,CountryPopulation Country 3 const 6 Using where
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%')
AND Country='USA'; AND Country='USA';
@ -779,72 +741,22 @@ ID Name Country Population
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
ID Name Country Population ID Name Country Population
3797 Philadelphia USA 1517550
3798 Phoenix USA 1321045
3820 Portland USA 529121
3844 Pittsburgh USA 334563
3870 Plano USA 222030
3912 Providence USA 173618
3930 Pomona USA 149473
3932 Paterson USA 149222
3943 Pasadena USA 141674
3951 Pembroke Pines USA 137427
3953 Pasadena USA 133936
3967 Paradise USA 124682
3986 Palmdale USA 116670
3996 Peoria USA 112936
4007 Peoria USA 108364
4016 Provo USA 105166
4023 Gary USA 102746
4024 Berkeley USA 102743
4025 Santa Clara USA 102361
4026 Green Bay USA 102313
4027 Cape Coral USA 102286
4028 Arvada USA 102153
4029 Pueblo USA 102121
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
4035 Portsmouth USA 100565
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
ID Name Country Population ID Name Country Population
3797 Philadelphia USA 1517550
3798 Phoenix USA 1321045
3820 Portland USA 529121
3844 Pittsburgh USA 334563
3870 Plano USA 222030
3912 Providence USA 173618
3930 Pomona USA 149473
3932 Paterson USA 149222
3943 Pasadena USA 141674
3951 Pembroke Pines USA 137427
3953 Pasadena USA 133936
3967 Paradise USA 124682
3986 Palmdale USA 116670
3996 Peoria USA 112936
4007 Peoria USA 108364
4016 Provo USA 105166
4023 Gary USA 102746
4024 Berkeley USA 102743
4025 Santa Clara USA 102361
4026 Green Bay USA 102313
4027 Cape Coral USA 102286
4028 Arvada USA 102153
4029 Pueblo USA 102121
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
4035 Portsmouth USA 100565
CREATE INDEX CountryName ON City(Country,Name); CREATE INDEX CountryName ON City(Country,Name);
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='USA'; SELECT * FROM City WHERE Country='USA';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 267 Using where 1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 267 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='FIN';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation,CountryName CountryName 3 const 5 Using where
EXPLAIN
SELECT * FROM City WHERE Country='BRA'; SELECT * FROM City WHERE Country='BRA';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation,CountryName CountryName 3 const 221 Using where 1 SIMPLE City ref Country,CountryPopulation,CountryName CountryName 3 const 221 Using where
@ -901,10 +813,10 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 110000) OR WHERE ((Population > 101000 AND Population < 110000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA' ID BETWEEN 3500 AND 3800) AND Country='FIN'
AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300); AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref PRIMARY,Population,Country,Name,CountryPopulation,CountryName Country 3 const 267 Using where 1 SIMPLE City ref PRIMARY,Population,Country,Name,CountryPopulation,CountryName CountryName 3 const 5 Using where
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='USA'
@ -939,20 +851,14 @@ ID Name Country Population
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='FIN'
AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035);
ID Name Country Population ID Name Country Population
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='FIN'
AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035);
ID Name Country Population ID Name Country Population
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 and Population < 102000) OR WHERE ((Population > 101000 and Population < 102000) OR

190
mysql-test/r/range_vs_index_merge_innodb.result
View File

@ -72,9 +72,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 458 Using where 1 SIMPLE City range Population Population 4 NULL 458 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE (Population > 101000 AND Population < 103000); WHERE (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population Population 4 NULL 80 Using where 1 SIMPLE City range Population Population 4 NULL 38 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')); WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'));
@ -89,9 +89,9 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Population,Country,Name Population 4 NULL 80 Using where 1 SIMPLE City range Population,Country,Name Population 4 NULL 38 Using where
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 115000); AND (Population > 101000 AND Population < 115000);
@ -154,24 +154,20 @@ ID Name Country Population
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
ID Name Country Population ID Name Country Population
637 Mit Ghamr EGY 101801 637 Mit Ghamr EGY 101801
707 Marbella ESP 101144 707 Marbella ESP 101144
3411 Ceyhan TUR 102412
3792 Tartu EST 101246 3792 Tartu EST 101246
4027 Cape Coral USA 102286
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
ID Name Country Population ID Name Country Population
707 Marbella ESP 101144 707 Marbella ESP 101144
3792 Tartu EST 101246 3792 Tartu EST 101246
4032 Cambridge USA 101355 4032 Cambridge USA 101355
637 Mit Ghamr EGY 101801 637 Mit Ghamr EGY 101801
4027 Cape Coral USA 102286
3411 Ceyhan TUR 102412
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (Name < 'Ac'); SELECT * FROM City WHERE (Name < 'Ac');
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
@ -329,17 +325,17 @@ ID Name Country Population
1003 Pemalang IDN 103500 1003 Pemalang IDN 103500
2663 Río Bravo MEX 103901 2663 Río Bravo MEX 103901
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 50) OR (ID BETWEEN 100 AND 110); SELECT * FROM City WHERE (ID < 10) OR (ID BETWEEN 100 AND 110);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 60 Using where 1 SIMPLE City range PRIMARY PRIMARY 4 NULL 20 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 300 AND 600); SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 100 AND 200);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 1142 Using where 1 SIMPLE City range PRIMARY PRIMARY 4 NULL 199 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1800); SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1500);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY PRIMARY 4 NULL 2950 Using where 1 SIMPLE City range PRIMARY PRIMARY 4 NULL 2006 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG'; SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
@ -354,27 +350,27 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range Name Name 35 NULL 133 Using where 1 SIMPLE City range Name Name 35 NULL 133 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 60 Using where 1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 20 Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 188 Using sort_union(Name,Country,Population); Using where 1 SIMPLE City index_merge PRIMARY,Population,Country,Name Name,Country,Population 35,3,4 NULL 188 Using sort_union(Name,Country,Population); Using where
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 600) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 1242 Using where 1 SIMPLE City range PRIMARY,Population,Country,Name PRIMARY 4 NULL 199 Using where
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
@ -383,15 +379,10 @@ ID Name Country Population
3 Herat AFG 186800 3 Herat AFG 186800
4 Mazar-e-Sharif AFG 127800 4 Mazar-e-Sharif AFG 127800
7 Haag NLD 440900 7 Haag NLD 440900
16 Haarlem NLD 148772
25 Haarlemmermeer NLD 110722
31 Heerlen NLD 95052
33 Willemstad ANT 2345
34 Tirana ALB 270000
100 Paraná ARG 207041 100 Paraná ARG 207041
102 Posadas ARG 201273 102 Posadas ARG 201273
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
@ -400,16 +391,11 @@ ID Name Country Population
3 Herat AFG 186800 3 Herat AFG 186800
4 Mazar-e-Sharif AFG 127800 4 Mazar-e-Sharif AFG 127800
7 Haag NLD 440900 7 Haag NLD 440900
16 Haarlem NLD 148772
25 Haarlemmermeer NLD 110722
31 Heerlen NLD 95052
33 Willemstad ANT 2345
34 Tirana ALB 270000
100 Paraná ARG 207041 100 Paraná ARG 207041
102 Posadas ARG 201273 102 Posadas ARG 201273
SELECT * FROM City USE INDEX() SELECT * FROM City USE INDEX()
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -464,13 +450,9 @@ ID Name Country Population
1468 Palermo ITA 683794 1468 Palermo ITA 683794
1478 Padova ITA 211391 1478 Padova ITA 211391
1484 Parma ITA 168717 1484 Parma ITA 168717
1530 Kingston JAM 103962
1747 Toda JPN 103969
1748 Tajimi JPN 103171
1785 Ibb YEM 103300
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -525,13 +507,9 @@ ID Name Country Population
1468 Palermo ITA 683794 1468 Palermo ITA 683794
1478 Padova ITA 211391 1478 Padova ITA 211391
1484 Parma ITA 168717 1484 Parma ITA 168717
1530 Kingston JAM 103962
1747 Toda JPN 103969
1748 Tajimi JPN 103171
1785 Ibb YEM 103300
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -556,25 +534,15 @@ ID Name Country Population
66 Sharja ARE 320095 66 Sharja ARE 320095
67 al-Ayn ARE 225970 67 al-Ayn ARE 225970
68 Ajman ARE 114395 68 Ajman ARE 114395
100 Paraná ARG 207041
129 Oranjestad ABW 29034 129 Oranjestad ABW 29034
167 Jamalpur BGD 103556
168 Pabna BGD 103277
189 Parakou BEN 103577
191 Hamilton BMU 1200 191 Hamilton BMU 1200
339 Passo Fundo BRA 166343
364 Parnaíba BRA 129756
372 Paranaguá BRA 126076
379 Palmas BRA 121919
386 Patos de Minas BRA 119262
411 Guaratinguetá BRA 103433
412 Cachoeirinha BRA 103240
413 Codó BRA 103153
424 Passos BRA 98570
430 Paulo Afonso BRA 97291
435 Parnamirim BRA 96210
448 Patos BRA 90519
451 Palhoça BRA 89465
517 Oldham GBR 103931
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
ID Name Country Population ID Name Country Population
1 Kabul AFG 1780000 1 Kabul AFG 1780000
@ -599,22 +567,12 @@ ID Name Country Population
66 Sharja ARE 320095 66 Sharja ARE 320095
67 al-Ayn ARE 225970 67 al-Ayn ARE 225970
68 Ajman ARE 114395 68 Ajman ARE 114395
100 Paraná ARG 207041
129 Oranjestad ABW 29034 129 Oranjestad ABW 29034
167 Jamalpur BGD 103556
168 Pabna BGD 103277
189 Parakou BEN 103577
191 Hamilton BMU 1200 191 Hamilton BMU 1200
339 Passo Fundo BRA 166343
364 Parnaíba BRA 129756
372 Paranaguá BRA 126076
379 Palmas BRA 121919
386 Patos de Minas BRA 119262
411 Guaratinguetá BRA 103433
412 Cachoeirinha BRA 103240
413 Codó BRA 103153
424 Passos BRA 98570
430 Paulo Afonso BRA 97291
435 Parnamirim BRA 96210
448 Patos BRA 90519
451 Palhoça BRA 89465
517 Oldham GBR 103931
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Population > 101000 AND Population < 102000; SELECT * FROM City WHERE Population > 101000 AND Population < 102000;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
@ -735,6 +693,10 @@ SELECT * FROM City WHERE Country='USA';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation Country 3 const 274 Using where 1 SIMPLE City ref Country,CountryPopulation Country 3 const 274 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='FIN';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation Country 3 const 7 Using where
EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%')
AND Country='USA'; AND Country='USA';
@ -743,9 +705,9 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Population,Country,Name,CountryPopulation Country 3 const 274 Using where 1 SIMPLE City ref Population,Country,Name,CountryPopulation Country 3 const 7 Using where
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'Pas%')
AND Country='USA'; AND Country='USA';
@ -780,72 +742,22 @@ ID Name Country Population
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
ID Name Country Population ID Name Country Population
3797 Philadelphia USA 1517550
3798 Phoenix USA 1321045
3820 Portland USA 529121
3844 Pittsburgh USA 334563
3870 Plano USA 222030
3912 Providence USA 173618
3930 Pomona USA 149473
3932 Paterson USA 149222
3943 Pasadena USA 141674
3951 Pembroke Pines USA 137427
3953 Pasadena USA 133936
3967 Paradise USA 124682
3986 Palmdale USA 116670
3996 Peoria USA 112936
4007 Peoria USA 108364
4016 Provo USA 105166
4023 Gary USA 102746
4024 Berkeley USA 102743
4025 Santa Clara USA 102361
4026 Green Bay USA 102313
4027 Cape Coral USA 102286
4028 Arvada USA 102153
4029 Pueblo USA 102121
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
4035 Portsmouth USA 100565
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
ID Name Country Population ID Name Country Population
3797 Philadelphia USA 1517550
3798 Phoenix USA 1321045
3820 Portland USA 529121
3844 Pittsburgh USA 334563
3870 Plano USA 222030
3912 Providence USA 173618
3930 Pomona USA 149473
3932 Paterson USA 149222
3943 Pasadena USA 141674
3951 Pembroke Pines USA 137427
3953 Pasadena USA 133936
3967 Paradise USA 124682
3986 Palmdale USA 116670
3996 Peoria USA 112936
4007 Peoria USA 108364
4016 Provo USA 105166
4023 Gary USA 102746
4024 Berkeley USA 102743
4025 Santa Clara USA 102361
4026 Green Bay USA 102313
4027 Cape Coral USA 102286
4028 Arvada USA 102153
4029 Pueblo USA 102121
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
4035 Portsmouth USA 100565
CREATE INDEX CountryName ON City(Country,Name); CREATE INDEX CountryName ON City(Country,Name);
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='USA'; SELECT * FROM City WHERE Country='USA';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 274 Using where 1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 274 Using where
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='FIN';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 7 Using where
EXPLAIN
SELECT * FROM City WHERE Country='BRA'; SELECT * FROM City WHERE Country='BRA';
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 250 Using where 1 SIMPLE City ref Country,CountryPopulation,CountryName Country 3 const 250 Using where
@ -902,10 +814,10 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 110000) OR WHERE ((Population > 101000 AND Population < 110000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA' ID BETWEEN 3500 AND 3800) AND Country='FIN'
AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300); AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE City ref PRIMARY,Population,Country,Name,CountryPopulation,CountryName Country 3 const 274 Using where 1 SIMPLE City ref PRIMARY,Population,Country,Name,CountryPopulation,CountryName Country 3 const 7 Using where
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='USA'
@ -940,20 +852,14 @@ ID Name Country Population
4032 Cambridge USA 101355 4032 Cambridge USA 101355
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='FIN'
AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035);
ID Name Country Population ID Name Country Population
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='FIN'
AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035);
ID Name Country Population ID Name Country Population
4030 Sandy USA 101853
4031 Athens-Clarke County USA 101489
4032 Cambridge USA 101355
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 and Population < 102000) OR WHERE ((Population > 101000 and Population < 102000) OR

54
mysql-test/t/range_vs_index_merge.test
View File

@ -68,7 +68,7 @@ SELECT * FROM City
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE (Population > 101000 AND Population < 103000); WHERE (Population > 101000 AND Population < 102000);
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
@ -88,7 +88,7 @@ SELECT * FROM City
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
# The following 4 queries check that the plans # The following 4 queries check that the plans
# for the previous 2 plans are valid # for the previous 2 plans are valid
@ -103,11 +103,11 @@ SELECT * FROM City
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
SELECT * FROM City SELECT * FROM City
WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F')) WHERE ((Name > 'Ca' AND Name < 'Cf') OR (Country > 'E' AND Country < 'F'))
AND (Population > 101000 AND Population < 103000); AND (Population > 101000 AND Population < 102000);
# The output of the next 7 commands tells us about selectivities # The output of the next 7 commands tells us about selectivities
# of the conditions utilized in 4 queries following after them # of the conditions utilized in 4 queries following after them
@ -197,11 +197,11 @@ SELECT * FROM City
# of the conditions utilized in 3 queries following after them # of the conditions utilized in 3 queries following after them
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 50) OR (ID BETWEEN 100 AND 110); SELECT * FROM City WHERE (ID < 10) OR (ID BETWEEN 100 AND 110);
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 300 AND 600); SELECT * FROM City WHERE (ID < 200) OR (ID BETWEEN 100 AND 200);
EXPLAIN EXPLAIN
SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1800); SELECT * FROM City WHERE (ID < 600) OR (ID BETWEEN 900 AND 1500);
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG'; SELECT * FROM City WHERE Country > 'A' AND Country < 'ARG';
EXPLAIN EXPLAIN
@ -219,20 +219,20 @@ SELECT * FROM City WHERE Name LIKE 'Ha%' OR Name LIKE 'Pa%' ;
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 600) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
@ -240,33 +240,33 @@ SELECT * FROM City
# for the previous 3 plans are valid # for the previous 3 plans are valid
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 50) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 10) AND (Name LIKE 'H%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 100 AND 110) AND OR ((ID BETWEEN 100 AND 110) AND
(Name LIKE 'P%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'P%' OR (Population > 103000 AND Population < 104000)));
SELECT * FROM City USE INDEX() SELECT * FROM City USE INDEX()
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 800) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 900 AND 1800) AND OR ((ID BETWEEN 900 AND 1500) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
SELECT * FROM City SELECT * FROM City
WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG'))) WHERE ((ID < 200) AND (Name LIKE 'Ha%' OR (Country > 'A' AND Country < 'ARG')))
OR ((ID BETWEEN 300 AND 600) AND OR ((ID BETWEEN 100 AND 200) AND
(Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000))); (Name LIKE 'Pa%' OR (Population > 103000 AND Population < 104000)));
@ -353,7 +353,7 @@ ANALYZE TABLE City;
--enable_result_log --enable_result_log
--enable_query_log --enable_query_log
# The output of the next 4 commands tells us about selectivities # The output of the next 5 commands tells us about selectivities
# of the conditions utilized in 2 queries following after them # of the conditions utilized in 2 queries following after them
EXPLAIN EXPLAIN
@ -364,6 +364,8 @@ EXPLAIN
SELECT * FROM City WHERE (Population > 101000 AND Population < 103000); SELECT * FROM City WHERE (Population > 101000 AND Population < 103000);
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='USA'; SELECT * FROM City WHERE Country='USA';
EXPLAIN
SELECT * FROM City WHERE Country='FIN';
# The pattern of the WHERE condition used in the following 3 queries is # The pattern of the WHERE condition used in the following 3 queries is
# (range(key1_p2) OR (range(key2)) AND key1_p1=c # (range(key1_p2) OR (range(key2)) AND key1_p1=c
@ -380,7 +382,7 @@ SELECT * FROM City
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
# The following 4 queries check that the plans # The following 4 queries check that the plans
# for the previous 2 plans are valid # for the previous 2 plans are valid
@ -395,11 +397,11 @@ SELECT * FROM City USE INDEX ()
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%') WHERE ((Population > 101000 AND Population < 103000) OR Name LIKE 'P%')
AND Country='USA'; AND Country='FIN';
CREATE INDEX CountryName ON City(Country,Name); CREATE INDEX CountryName ON City(Country,Name);
@ -412,12 +414,14 @@ ANALYZE TABLE City;
--enable_result_log --enable_result_log
--enable_query_log --enable_query_log
# The output of the next 11 commands tells us about selectivities # The output of the next 12 commands tells us about selectivities
# of the conditions utilized in 3 queries following after them # of the conditions utilized in 3 queries following after them
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='USA'; SELECT * FROM City WHERE Country='USA';
EXPLAIN EXPLAIN
SELECT * FROM City WHERE Country='FIN';
EXPLAIN
SELECT * FROM City WHERE Country='BRA'; SELECT * FROM City WHERE Country='BRA';
EXPLAIN EXPLAIN
SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800; SELECT * FROM City WHERE ID BETWEEN 3790 AND 3800;
@ -464,7 +468,7 @@ SELECT * FROM City
EXPLAIN EXPLAIN
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 110000) OR WHERE ((Population > 101000 AND Population < 110000) OR
ID BETWEEN 3500 AND 3800) AND Country='USA' ID BETWEEN 3500 AND 3800) AND Country='FIN'
AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300); AND (Name BETWEEN 'P' AND 'T' OR ID BETWEEN 4000 AND 4300);
# The following 6 queries check that the plans # The following 6 queries check that the plans
@ -492,12 +496,12 @@ SELECT * FROM City
SELECT * FROM City USE INDEX () SELECT * FROM City USE INDEX ()
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='FIN'
AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035);
SELECT * FROM City SELECT * FROM City
WHERE ((Population > 101000 AND Population < 102000) OR WHERE ((Population > 101000 AND Population < 102000) OR
ID BETWEEN 3790 AND 3800) AND Country='USA' ID BETWEEN 3790 AND 3800) AND Country='FIN'
AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035); AND (Name LIKE 'Pa%' OR ID BETWEEN 4025 AND 4035);

2
sql/mysql_priv.h
View File

@ -338,7 +338,7 @@ protected:
Number of comparisons of table rowids equivalent to reading one row from a Number of comparisons of table rowids equivalent to reading one row from a
table. table.
*/ */
#define TIME_FOR_COMPARE_ROWID (TIME_FOR_COMPARE*2) #define TIME_FOR_COMPARE_ROWID (TIME_FOR_COMPARE*100)
/* /*
For sequential disk seeks the cost formula is: For sequential disk seeks the cost formula is:

5
sql/opt_range.cc
View File

@ -1093,7 +1093,7 @@ int SEL_IMERGE::or_sel_tree_with_checks(RANGE_OPT_PARAM *param,
{ {
bool must_be_ored= sel_trees_must_be_ored(param, *or_tree, tree, bool must_be_ored= sel_trees_must_be_ored(param, *or_tree, tree,
ored_keys); ored_keys);
if (must_be_ored == is_first_check_pass) if (must_be_ored || !is_first_check_pass)
{ {
result_keys.clear_all(); result_keys.clear_all();
result= *or_tree; result= *or_tree;
@ -1138,8 +1138,7 @@ int SEL_IMERGE::or_sel_tree_with_checks(RANGE_OPT_PARAM *param,
*or_tree= result; *or_tree= result;
if (is_first_check_pass) if (is_first_check_pass)
return 0; return 0;
else was_ored= TRUE;
was_ored= TRUE;
} }
} }
if (was_ored) if (was_ored)