mirror of
https://github.com/MariaDB/server.git
synced 2025-11-27 05:41:41 +03:00
eb483c5181
- multi_range_read_info_const now uses the new records_in_range interface - Added handler::avg_io_cost() - Don't calculate avg_io_cost() in get_sweep_read_cost if avg_io_cost is not 1.0. In this case we trust the avg_io_cost() from the handler. - Changed test_quick_select to use TIME_FOR_COMPARE instead of TIME_FOR_COMPARE_IDX to align this with the rest of the code. - Fixed bug when using test_if_cheaper_ordering where we didn't use keyread if index was changed - Fixed a bug where we didn't use index only read when using order-by-index - Added keyread_time() to HEAP. The default keyread_time() was optimized for blocks and not suitable for HEAP. The effect was the HEAP prefered table scans over ranges for btree indexes. - Fixed get_sweep_read_cost() for HEAP tables - Ensure that range and ref have same cost for simple ranges Added a small cost (MULTI_RANGE_READ_SETUP_COST) to ranges to ensure we favior ref for range for simple queries. - Fixed that matching_candidates_in_table() uses same number of records as the rest of the optimizer - Added avg_io_cost() to JT_EQ_REF cost. This helps calculate the cost for HEAP and temporary tables better. A few tests changed because of this. - heap::read_time() and heap::keyread_time() adjusted to not add +1. This was to ensure that handler::keyread_time() doesn't give higher cost for heap tables than for normal tables. One effect of this is that heap and derived tables stored in heap will prefer key access as this is now regarded as cheap. - Changed cost for index read in sql_select.cc to match multi_range_read_info_const(). All index cost calculation is now done trough one function. - 'ref' will now use quick_cost for keys if it exists. This is done so that for '=' ranges, 'ref' is prefered over 'range'. - scan_time() now takes avg_io_costs() into account - get_delayed_table_estimates() uses block_size and avg_io_cost() - Removed default argument to test_if_order_by_key(); simplifies code
182 lines
5.0 KiB
Plaintext
182 lines
5.0 KiB
Plaintext
FLUSH TABLES;
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# Treating compact format as dynamic format after import stmt
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CREATE TABLE t1
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(a int AUTO_INCREMENT PRIMARY KEY,
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b blob,
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c blob,
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KEY (b(200))) ENGINE=InnoDB ROW_FORMAT=COMPACT;
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BEGIN;
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INSERT INTO t1 (b, c) values (repeat("ab", 200), repeat("bc", 200));
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INSERT INTO t1 (b, c) values (repeat("bc", 200), repeat("cd", 200));
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INSERT INTO t1 (b, c) values (repeat("cd", 200), repeat("ef", 200));
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INSERT INTO t1 (b, c) values (repeat("de", 200), repeat("fg", 200));
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INSERT INTO t1 (b, c) values (repeat("ef", 200), repeat("gh", 200));
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INSERT INTO t1 (b, c) values (repeat("fg", 200), repeat("hi", 200));
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INSERT INTO t1 (b, c) values (repeat("gh", 200), repeat("ij", 200));
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INSERT INTO t1 (b, c) values (repeat("hi", 200), repeat("jk", 200));
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INSERT INTO t1 (b, c) values (repeat("ij", 200), repeat("kl", 200));
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INSERT INTO t1 (b, c) values (repeat("jk", 200), repeat("lm", 200));
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INSERT INTO t1 (b, c) SELECT b,c FROM t1 ORDER BY a;
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INSERT INTO t1 (b, c) SELECT b,c FROM t1 ORDER BY a;
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COMMIT;
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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40
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FLUSH TABLE t1 FOR EXPORT;
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# List before copying files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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backup: t1
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UNLOCK TABLES;
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ALTER TABLE t1 ROW_FORMAT=DYNAMIC;
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ALTER TABLE t1 DISCARD TABLESPACE;
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db.opt
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t1.frm
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL AUTO_INCREMENT,
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`b` blob DEFAULT NULL,
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`c` blob DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `b` (`b`(200))
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) ENGINE=InnoDB AUTO_INCREMENT=46 DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
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UPDATE t1 set b = repeat("de", 100) where b = repeat("cd", 200);
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explain SELECT a FROM t1 where b = repeat("de", 100);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref b b 203 const # Using where
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SELECT a FROM t1 where b = repeat("de", 100);
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a
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3
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13
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28
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38
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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40
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DELETE FROM t1;
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InnoDB 0 transactions not purged
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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DROP TABLE t1;
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CREATE TABLE t1
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(c1 int AUTO_INCREMENT PRIMARY KEY,
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c2 POINT NOT NULL,
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c3 LINESTRING NOT NULL,
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SPATIAL INDEX idx1(c2)) ENGINE=InnoDB ROW_FORMAT=COMPACT;
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INSERT INTO t1(c2,c3) VALUES(
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ST_GeomFromText('POINT(10 10)'),
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ST_GeomFromText('LINESTRING(5 5,20 20,30 30)'));
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INSERT INTO t1(c2,c3) VALUES(
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ST_GeomFromText('POINT(20 20)'),
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ST_GeomFromText('LINESTRING(5 15,20 10,30 20)'));
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INSERT INTO t1(c2,c3) VALUES(
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ST_GeomFromText('POINT(30 30)'),
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ST_GeomFromText('LINESTRING(10 5,20 24,30 32)'));
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INSERT INTO t1(c2,c3) VALUES(
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ST_GeomFromText('POINT(40 40)'),
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ST_GeomFromText('LINESTRING(15 5,25 20,35 30)'));
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INSERT INTO t1(c2,c3) VALUES(
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ST_GeomFromText('POINT(50 10)'),
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ST_GeomFromText('LINESTRING(15 15,24 10,31 20)'));
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INSERT INTO t1(c2,c3) VALUES(
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ST_GeomFromText('POINT(60 50)'),
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ST_GeomFromText('LINESTRING(10 15,20 44,35 32)'));
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BEGIN;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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INSERT INTO t1(c2, c3) SELECT c2, c3 FROM t1;
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COMMIT;
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FLUSH TABLE t1 FOR EXPORT;
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# List before copying files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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backup: t1
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UNLOCK TABLES;
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ALTER TABLE t1 ROW_FORMAT=DYNAMIC;
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ALTER TABLE t1 DISCARD TABLESPACE;
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`c1` int(11) NOT NULL AUTO_INCREMENT,
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`c2` point NOT NULL,
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`c3` linestring NOT NULL,
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PRIMARY KEY (`c1`),
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SPATIAL KEY `idx1` (`c2`)
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) ENGINE=InnoDB AUTO_INCREMENT=14325 DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
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UPDATE t1 SET C2 = ST_GeomFromText('POINT(0 0)');
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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12288
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DELETE FROM t1;
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CHECK TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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InnoDB 0 transactions not purged
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DROP TABLE t1;
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SET @save_algo = @@GLOBAL.innodb_compression_algorithm;
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SET GLOBAL innodb_compression_algorithm=2;
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CREATE TABLE t1(a SERIAL) PAGE_COMPRESSED=1 ENGINE=InnoDB;
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INSERT INTO t1 VALUES(1);
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FLUSH TABLE t1 FOR EXPORT;
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# List before copying files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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backup: t1
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UNLOCK TABLES;
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SET GLOBAL innodb_compression_algorithm=0;
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ALTER TABLE t1 FORCE;
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ALTER TABLE t1 DISCARD TABLESPACE;
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db.opt
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t1.frm
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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INSERT INTO t1 VALUES(2);
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SELECT * FROM t1;
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a
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1
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2
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SET GLOBAL innodb_compression_algorithm=3;
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FLUSH TABLE t1 FOR EXPORT;
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# List before copying files
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db.opt
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t1.cfg
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t1.frm
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t1.ibd
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backup: t1
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UNLOCK TABLES;
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SET GLOBAL innodb_compression_algorithm=0;
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ALTER TABLE t1 FORCE;
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ALTER TABLE t1 DISCARD TABLESPACE;
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db.opt
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t1.frm
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restore: t1 .ibd and .cfg files
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ALTER TABLE t1 IMPORT TABLESPACE;
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INSERT INTO t1 VALUES(3);
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SELECT * FROM t1;
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a
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1
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2
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3
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DROP TABLE t1;
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SET GLOBAL innodb_compression_algorithm=@save_algo;
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