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- Make the range-et-al optimizer produce E(#table records after table
condition is applied),
- Make the join optimizer use this value,
- Add "filtered" column to EXPLAIN EXTENDED to show
fraction of records left after table condition is applied
- Adjust test results, add comments
mysql-test/r/archive_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/auto_increment.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/bdb_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/bench_count_distinct.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/binlog_stm_blackhole.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/case.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/cast.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/compress.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ctype_collate.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ctype_cp1250_ch.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/date_formats.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/distinct.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/fulltext.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_compress.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_crypt.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_default.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_encrypt.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_gconcat.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_group.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_if.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_in.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_like.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_math.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_op.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_regexp.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_set.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_str.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_system.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_test.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_time.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/group_by.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/group_min_max.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/having.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/heap.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/heap_hash.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge_innodb.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge_ror.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/innodb_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/insert_update.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/join.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/join_nested.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/key_diff.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/myisam.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ndb_gis.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/negation_elimination.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/null.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/olap.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/partition_pruning.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/query_cache.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/row.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/rpl_get_lock.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/rpl_master_pos_wait.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/select.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ssl.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ssl_compress.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/subselect.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/type_blob.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/union.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/varbinary.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/variables.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/view.result:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/ctype_cp1250_ch.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/func_like.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/group_min_max.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/index_merge_ror.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/index_merge_ror_cpk.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/join.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/partition_pruning.test:
BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
sql/opt_range.cc:
BUG#14940: Make range/index_merge/group-min-max optimizer produce TABLE::quick_condition_rows -
estimate of #records that will match the table condition.
sql/sql_class.cc:
BUG#14940: Add "filtered" column to output of EXPLAIN EXTENDED
sql/sql_select.cc:
BUG#14940:
- Make the join optimizer to use TABLE::quick_condition_rows=
= E(#table records after filtering with table condition)
- Add "filtered" column to output of EXPLAIN EXTENDED
sql/sql_select.h:
BUG#14940: Added comments
sql/table.h:
BUG#14940: Added comments
172 lines
3.9 KiB
Plaintext
172 lines
3.9 KiB
Plaintext
drop table if exists t1;
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create table t1 (a varchar(10), key(a));
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insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
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explain extended select * from t1 where a like 'abc%';
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 index a a 13 NULL 5 20.00 Using where; Using index
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Warnings:
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Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` like _latin1'abc%')
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explain extended select * from t1 where a like concat('abc','%');
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 index a a 13 NULL 5 20.00 Using where; Using index
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Warnings:
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Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` like concat(_latin1'abc',_latin1'%'))
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select * from t1 where a like "abc%";
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a
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abc
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abcd
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select * from t1 where a like concat("abc","%");
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a
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abc
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abcd
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select * from t1 where a like "ABC%";
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a
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abc
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abcd
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select * from t1 where a like "test%";
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a
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test
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select * from t1 where a like "te_t";
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a
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test
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select * from t1 where a like "%a%";
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a
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a
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abc
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abcd
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select * from t1 where a like "%abcd%";
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a
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abcd
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select * from t1 where a like "%abc\d%";
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a
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abcd
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drop table t1;
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create table t1 (a varchar(10), key(a));
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insert into t1 values ('a'), ('a\\b');
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select * from t1 where a like 'a\\%' escape '#';
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a
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a\b
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select * from t1 where a like 'a\\%' escape '#' and a like 'a\\\\b';
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a
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a\b
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prepare stmt1 from 'select * from t1 where a like \'a\\%\' escape ?';
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set @esc='#';
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execute stmt1 using @esc;
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a
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a\b
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deallocate prepare stmt1;
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drop table t1;
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create table t1 (a datetime);
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insert into t1 values ('2004-03-11 12:00:21');
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select * from t1 where a like '2004-03-11 12:00:21';
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a
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2004-03-11 12:00:21
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drop table t1;
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SET NAMES koi8r;
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CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET koi8r);
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INSERT INTO t1 VALUES ('ÆÙ×Á'),('æÙ×Á'),('Æù×Á'),('ÆÙ÷Á'),('ÆÙ×á'),('æù÷á');
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INSERT INTO t1 VALUES ('ÆÙ×ÁÐÒÏÌÄÖ'),('æÙ×ÁÐÒÏÌÄÖ'),('Æù×ÁÐÒÏÌÄÖ'),('ÆÙ÷ÁÐÒÏÌÄÖ');
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INSERT INTO t1 VALUES ('ÆÙ×áÐÒÏÌÄÖ'),('ÆÙ×ÁðÒÏÌÄÖ'),('ÆÙ×ÁÐòÏÌÄÖ'),('ÆÙ×ÁÐÒïÌÄÖ');
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INSERT INTO t1 VALUES ('ÆÙ×ÁÐÒÏìÄÖ'),('ÆÙ×ÁÐÒÏÌäÖ'),('ÆÙ×ÁÐÒÏÌÄö'),('æù÷áðòïìäö');
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SELECT * FROM t1 WHERE a LIKE '%Æù×Á%';
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a
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ÆÙ×Á
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æÙ×Á
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Æù×Á
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ÆÙ÷Á
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ÆÙ×á
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æù÷á
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ÆÙ×ÁÐÒÏÌÄÖ
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æÙ×ÁÐÒÏÌÄÖ
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Æù×ÁÐÒÏÌÄÖ
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ÆÙ÷ÁÐÒÏÌÄÖ
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ÆÙ×áÐÒÏÌÄÖ
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ÆÙ×ÁðÒÏÌÄÖ
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ÆÙ×ÁÐòÏÌÄÖ
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ÆÙ×ÁÐÒïÌÄÖ
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ÆÙ×ÁÐÒÏìÄÖ
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ÆÙ×ÁÐÒÏÌäÖ
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ÆÙ×ÁÐÒÏÌÄö
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æù÷áðòïìäö
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SELECT * FROM t1 WHERE a LIKE '%Æù×%';
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a
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ÆÙ×Á
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æÙ×Á
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Æù×Á
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ÆÙ÷Á
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ÆÙ×á
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æù÷á
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ÆÙ×ÁÐÒÏÌÄÖ
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æÙ×ÁÐÒÏÌÄÖ
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Æù×ÁÐÒÏÌÄÖ
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ÆÙ÷ÁÐÒÏÌÄÖ
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ÆÙ×áÐÒÏÌÄÖ
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ÆÙ×ÁðÒÏÌÄÖ
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ÆÙ×ÁÐòÏÌÄÖ
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ÆÙ×ÁÐÒïÌÄÖ
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ÆÙ×ÁÐÒÏìÄÖ
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ÆÙ×ÁÐÒÏÌäÖ
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ÆÙ×ÁÐÒÏÌÄö
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æù÷áðòïìäö
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SELECT * FROM t1 WHERE a LIKE 'Æù×Á%';
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a
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ÆÙ×Á
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æÙ×Á
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Æù×Á
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ÆÙ÷Á
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ÆÙ×á
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æù÷á
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ÆÙ×ÁÐÒÏÌÄÖ
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æÙ×ÁÐÒÏÌÄÖ
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Æù×ÁÐÒÏÌÄÖ
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ÆÙ÷ÁÐÒÏÌÄÖ
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ÆÙ×áÐÒÏÌÄÖ
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ÆÙ×ÁðÒÏÌÄÖ
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ÆÙ×ÁÐòÏÌÄÖ
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ÆÙ×ÁÐÒïÌÄÖ
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ÆÙ×ÁÐÒÏìÄÖ
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ÆÙ×ÁÐÒÏÌäÖ
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ÆÙ×ÁÐÒÏÌÄö
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æù÷áðòïìäö
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DROP TABLE t1;
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SET NAMES cp1250;
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CREATE TABLE t1 (a varchar(250) NOT NULL) DEFAULT CHARACTER SET=cp1250;
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INSERT INTO t1 VALUES
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('Techni Tapes Sp. z o.o.'),
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('Pojazdy Szynowe PESA Bydgoszcz SA Holding'),
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('AKAPESTER 1 P.P.H.U.'),
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('Pojazdy Szynowe PESA Bydgoszcz S A Holding'),
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('PPUH PESKA-I Maria Struniarska');
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select * from t1 where a like '%PESA%';
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a
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Pojazdy Szynowe PESA Bydgoszcz SA Holding
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Pojazdy Szynowe PESA Bydgoszcz S A Holding
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select * from t1 where a like '%PESA %';
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a
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Pojazdy Szynowe PESA Bydgoszcz SA Holding
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Pojazdy Szynowe PESA Bydgoszcz S A Holding
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select * from t1 where a like '%PES%';
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a
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Techni Tapes Sp. z o.o.
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Pojazdy Szynowe PESA Bydgoszcz SA Holding
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AKAPESTER 1 P.P.H.U.
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Pojazdy Szynowe PESA Bydgoszcz S A Holding
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PPUH PESKA-I Maria Struniarska
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select * from t1 where a like '%PESKA%';
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a
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PPUH PESKA-I Maria Struniarska
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select * from t1 where a like '%ESKA%';
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a
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PPUH PESKA-I Maria Struniarska
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DROP TABLE t1;
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select _cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin;
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_cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin
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1
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set names koi8r;
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select 'andre%' like 'andreÊ%' escape 'Ê';
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'andre%' like 'andreÊ%' escape 'Ê'
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1
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select _cp1251'andre%' like convert('andreÊ%' using cp1251) escape 'Ê';
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_cp1251'andre%' like convert('andreÊ%' using cp1251) escape 'Ê'
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1
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