From 8dd88f48c197f387f7056985dbe3d68fa041d7f5 Mon Sep 17 00:00:00 2001 From: unknown Date: Fri, 28 Jul 2006 21:27:01 +0400 Subject: BUG#14940 "MySQL choose wrong index", v.2 - 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 --- mysql-test/r/union.result | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'mysql-test/r/union.result') diff --git a/mysql-test/r/union.result b/mysql-test/r/union.result index 43598caa86f..255fc4d6205 100644 --- a/mysql-test/r/union.result +++ b/mysql-test/r/union.result @@ -83,10 +83,10 @@ a b (select a,b from t1 limit 2) union all (select a,b from t2 order by a limit 1) order by t1.b; ERROR 42000: Table 't1' from one of the SELECTs cannot be used in global ORDER clause explain extended (select a,b from t1 limit 2) union all (select a,b from t2 order by a limit 1) order by b desc; -id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 4 -2 UNION t2 ALL NULL NULL NULL NULL 4 Using filesort -NULL UNION RESULT ALL NULL NULL NULL NULL NULL Using filesort +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 100.00 +2 UNION t2 ALL NULL NULL NULL NULL 4 100.00 Using filesort +NULL UNION RESULT ALL NULL NULL NULL NULL NULL NULL Using filesort Warnings: Note 1003 (select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` limit 2) union all (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`a` limit 1) order by `b` desc (select sql_calc_found_rows a,b from t1 limit 2) union all (select a,b from t2 order by a) limit 2; @@ -475,10 +475,10 @@ create table t2 (a int not null primary key auto_increment, b int); insert into t1 (b) values (1),(2),(2),(3); insert into t2 (b) values (10),(11),(12),(13); explain extended (select * from t1 where a=1) union (select * from t2 where a=1); -id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 -2 UNION t2 const PRIMARY PRIMARY 4 const 1 -NULL UNION RESULT ALL NULL NULL NULL NULL NULL +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 100.00 +2 UNION t2 const PRIMARY PRIMARY 4 const 1 100.00 +NULL UNION RESULT ALL NULL NULL NULL NULL NULL NULL Warnings: Note 1003 (select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = 1)) union (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` = 1)) (select * from t1 where a=5) union (select * from t2 where a=1); @@ -500,7 +500,7 @@ explain (select * from t1 where a=1 and b=10) union (select straight_join t1.a,t id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 UNION t1 index PRIMARY PRIMARY 4 NULL 4 Using index -2 UNION t2 index PRIMARY PRIMARY 4 NULL 3 Using where; Using index +2 UNION t2 index PRIMARY PRIMARY 4 NULL 4 Using where; Using index NULL UNION RESULT ALL NULL NULL NULL NULL NULL explain (select * from t1 where a=1) union (select * from t1 where b=1); id select_type table type possible_keys key key_len ref rows Extra -- cgit v1.2.1