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DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
i INT,
a INT,
b INT,
PRIMARY KEY (i),
KEY ka(a),
KEY kb(b) comment 'rev:cf1'
) ENGINE = rocksdb;
explain extended select * from t1 where a> 500 and a< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` > 500 and `test`.`t1`.`a` < 750
explain extended select * from t1 where a< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` < 750
explain extended select * from t1 where a> 500;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` > 500
explain extended select * from t1 where a>=0 and a<=1000;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` >= 0 and `test`.`t1`.`a` <= 1000
explain extended select * from t1 where b> 500 and b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` > 500 and `test`.`t1`.`b` < 750
explain extended select * from t1 where b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` < 750
explain extended select * from t1 where b> 500;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` > 500
explain extended select * from t1 where b>=0 and b<=1000;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` >= 0 and `test`.`t1`.`b` <= 1000
set @save_rocksdb_records_in_range = @@session.rocksdb_records_in_range;
set rocksdb_records_in_range = 15000;
explain extended select a from t1 where a < 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 15000 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 750
explain extended select a, b from t1 where a < 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL ka NULL NULL NULL 20000 75.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` < 750
explain extended select a from t1 where a = 700;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ref ka ka 5 const 15000 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 700
explain extended select a,b from t1 where a = 700;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ref ka ka 5 const 15000 100.00
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` = 700
explain extended select a from t1 where a in (700, 800);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index ka ka 5 NULL 20000 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` in (700,800)
explain extended select a,b from t1 where a in (700, 800);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL ka NULL NULL NULL 20000 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` in (700,800)
set rocksdb_records_in_range=8000;
explain extended select a from t1 where a in (700, 800);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 16000 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` in (700,800)
explain extended select a,b from t1 where a in (700, 800);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL ka NULL NULL NULL 20000 80.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` in (700,800)
set rocksdb_records_in_range = @save_rocksdb_records_in_range;
set global rocksdb_force_flush_memtable_now = true;
explain extended select * from t1 where a> 500 and a< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` > 500 and `test`.`t1`.`a` < 750
explain extended select * from t1 where a< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` < 750
explain extended select * from t1 where a> 500;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` > 500
explain extended select * from t1 where a>=0 and a<=1000;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` >= 0 and `test`.`t1`.`a` <= 1000
explain extended select * from t1 where b> 500 and b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` > 500 and `test`.`t1`.`b` < 750
explain extended select * from t1 where b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` < 750
explain extended select * from t1 where b> 500;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` > 500
explain extended select * from t1 where b>=0 and b<=1000;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` >= 0 and `test`.`t1`.`b` <= 1000
explain extended select * from t1 where a>= 500 and a<= 500;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka ka 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` >= 500 and `test`.`t1`.`a` <= 500
explain extended select * from t1 where b>= 500 and b<= 500;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kb kb 5 NULL 1000 100.00 Using index condition
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` >= 500 and `test`.`t1`.`b` <= 500
explain extended select * from t1 where a< 750 and b> 500 and b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range ka,kb ka 5 NULL 1000 100.00 Using index condition; Using where
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` < 750 and `test`.`t1`.`b` > 500 and `test`.`t1`.`b` < 750
drop index ka on t1;
drop index kb on t1;
create index kab on t1(a,b);
set global rocksdb_force_flush_memtable_now = true;
explain extended select * from t1 where a< 750 and b> 500 and b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kab kab 5 NULL 1000 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` < 750 and `test`.`t1`.`b` > 500 and `test`.`t1`.`b` < 750
set rocksdb_records_in_range=444;
explain extended select * from t1 where a< 750 and b> 500 and b< 750;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range kab kab 5 NULL 444 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`i` AS `i`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` < 750 and `test`.`t1`.`b` > 500 and `test`.`t1`.`b` < 750
set rocksdb_records_in_range=0;
CREATE TABLE `linktable` (
`id1` bigint(20) unsigned NOT NULL DEFAULT '0',
`id1_type` int(10) unsigned NOT NULL DEFAULT '0',
`id2` bigint(20) unsigned NOT NULL DEFAULT '0',
`id2_type` int(10) unsigned NOT NULL DEFAULT '0',
`link_type` bigint(20) unsigned NOT NULL DEFAULT '0',
`visibility` tinyint(3) NOT NULL DEFAULT '0',
`data` varchar(255) COLLATE latin1_bin NOT NULL DEFAULT '',
`time` bigint(20) unsigned NOT NULL DEFAULT '0',
`version` int(11) unsigned NOT NULL DEFAULT '0',
PRIMARY KEY (`link_type`,`id1`,`id2`) COMMENT 'cf_link_pk',
KEY `id1_type` (`id1`,`link_type`,`visibility`,`time`,`version`,`data`) COMMENT 'cf_link_id1_type'
) ENGINE=ROCKSDB DEFAULT CHARSET=latin1 COLLATE=latin1_bin;
insert into linktable values (1,1,1,1,1,1,1,1,1);
insert into linktable values (1,1,2,1,1,1,1,1,1);
insert into linktable values (1,1,3,1,1,1,1,1,1);
insert into linktable values (1,1,4,1,1,1,1,1,1);
set global rocksdb_force_flush_memtable_now = true;
explain select id1, id2, link_type, visibility, data, time, version from linktable where id1 = 1 and link_type = 1 and id2 in (1, 2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE linktable range PRIMARY,id1_type PRIMARY 24 NULL 2 Using where
drop table linktable;
CREATE TABLE `linktable` (
`id1` bigint(20) unsigned NOT NULL DEFAULT '0',
`id1_type` int(10) unsigned NOT NULL DEFAULT '0',
`id2` bigint(20) unsigned NOT NULL DEFAULT '0',
`id2_type` int(10) unsigned NOT NULL DEFAULT '0',
`link_type` bigint(20) unsigned NOT NULL DEFAULT '0',
`visibility` tinyint(3) NOT NULL DEFAULT '0',
`data` varchar(255) COLLATE latin1_bin NOT NULL DEFAULT '',
`time` bigint(20) unsigned NOT NULL DEFAULT '0',
`version` int(11) unsigned NOT NULL DEFAULT '0',
PRIMARY KEY (`link_type`,`id1`,`id2`) COMMENT 'cf_link_pk',
KEY `id1_type` (`id1`,`link_type`,`visibility`,`time`,`version`,`data`) COMMENT 'rev:cf_link_id1_type'
) ENGINE=ROCKSDB DEFAULT CHARSET=latin1 COLLATE=latin1_bin;
insert into linktable values (1,1,1,1,1,1,1,1,1);
insert into linktable values (1,1,2,1,1,1,1,1,1);
insert into linktable values (1,1,3,1,1,1,1,1,1);
insert into linktable values (1,1,4,1,1,1,1,1,1);
set global rocksdb_force_flush_memtable_now = true;
explain select id1, id2, link_type, visibility, data, time, version from linktable where id1 = 1 and link_type = 1 and id2 in (1, 2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE linktable range PRIMARY,id1_type PRIMARY 24 NULL 2 Using where
drop table linktable;
DROP TABLE t1;
|
