mirror of
https://github.com/MariaDB/server.git
synced 2025-07-30 16:24:05 +03:00
The pilot patch for mwl#253.
This commit is contained in:
Igor Babaev
@ -500,6 +500,18 @@ The following options may be given as the first argument:
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partial_match_table_scan, semijoin, semijoin_with_cache,
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subquery_cache, table_elimination, extended_keys,
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exists_to_in } and val is one of {on, off, default}
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--optimizer-use-condition-selectivity=#
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Controls selectivity of which conditions the optimizer
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takes into account to calculate cardinality of a partial
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join when it searches for the best execution plan
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Meaning: 1 - use selectivity of index backed range
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conditions to calculate cardinality of the partial join
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if the last joined table is accessed by full table scan
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or an index scan 2 - use selectivity of index backed
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range conditions to calculate cardinality of the partial
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join in any case 3 - additionally always use selectivity
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of range conditions that are not backed by any index to
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calculate cardinality of the partial join
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--performance-schema
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Enable the performance schema.
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--performance-schema-events-waits-history-long-size=#
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@ -1004,6 +1016,7 @@ old-style-user-limits FALSE
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optimizer-prune-level 1
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optimizer-search-depth 62
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optimizer-switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on
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optimizer-use-condition-selectivity 1
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performance-schema FALSE
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performance-schema-events-waits-history-long-size 10000
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performance-schema-events-waits-history-size 10
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114
mysql-test/r/selectivity.result
Normal file
114
mysql-test/r/selectivity.result
Normal file
@ -0,0 +1,114 @@
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select @@global.use_stat_tables;
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@@global.use_stat_tables
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COMPLEMENTARY
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select @@session.use_stat_tables;
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@@session.use_stat_tables
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COMPLEMENTARY
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set @save_use_stat_tables=@@use_stat_tables;
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set use_stat_tables='preferably';
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DROP DATABASE IF EXISTS dbt3_s001;
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CREATE DATABASE dbt3_s001;
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use dbt3_s001;
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set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
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EXPLAIN EXTENDED select sql_calc_found_rows
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s_name, s_address
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from supplier, nation
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where s_suppkey in (select ps_suppkey from partsupp
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where ps_partkey in (select p_partkey from part
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where p_name like 'g%')
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and ps_availqty >
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(select 0.5 * sum(l_quantity)
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from lineitem
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where l_partkey = ps_partkey
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and l_suppkey = ps_suppkey
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and l_shipdate >= date('1993-01-01')
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and l_shipdate < date('1993-01-01') +
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interval '1' year ))
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and s_nationkey = n_nationkey
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and n_name = 'UNITED STATES'
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order by s_name
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limit 10;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 100.00 Using where; Using filesort
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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1 PRIMARY nation eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
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2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 100.00 Using where
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2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
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4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 100.00 Using where
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Warnings:
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_suppkey' of SELECT #4 was resolved in SELECT #2
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Note 1003 select sql_calc_found_rows `dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address` from `dbt3_s001`.`supplier` semi join (`dbt3_s001`.`part` join `dbt3_s001`.`partsupp`) join `dbt3_s001`.`nation` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`nation`.`n_name` = 'UNITED STATES') and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`partsupp`.`ps_availqty` > <expr_cache><`dbt3_s001`.`partsupp`.`ps_partkey`,`dbt3_s001`.`partsupp`.`ps_suppkey`>((select (0.5 * sum(`dbt3_s001`.`lineitem`.`l_quantity`)) from `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`lineitem`.`l_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`) and (`dbt3_s001`.`lineitem`.`l_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`lineitem`.`l_shipDATE` >= <cache>(cast('1993-01-01' as date))) and (`dbt3_s001`.`lineitem`.`l_shipDATE` < <cache>((cast('1993-01-01' as date) + interval '1' year))))))) and (`dbt3_s001`.`part`.`p_name` like 'g%')) order by `dbt3_s001`.`supplier`.`s_name` limit 10
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select sql_calc_found_rows
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s_name, s_address
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from supplier, nation
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where s_suppkey in (select ps_suppkey from partsupp
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where ps_partkey in (select p_partkey from part
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where p_name like 'g%')
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and ps_availqty >
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(select 0.5 * sum(l_quantity)
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from lineitem
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where l_partkey = ps_partkey
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and l_suppkey = ps_suppkey
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and l_shipdate >= date('1993-01-01')
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and l_shipdate < date('1993-01-01') +
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interval '1' year ))
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and s_nationkey = n_nationkey
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and n_name = 'UNITED STATES'
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order by s_name
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limit 10;
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s_name s_address
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Supplier#000000010 Saygah3gYWMp72i PY
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set optimizer_use_condition_selectivity=3;
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EXPLAIN EXTENDED select sql_calc_found_rows
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s_name, s_address
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from supplier, nation
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where s_suppkey in (select ps_suppkey from partsupp
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where ps_partkey in (select p_partkey from part
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where p_name like 'g%')
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and ps_availqty >
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(select 0.5 * sum(l_quantity)
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from lineitem
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where l_partkey = ps_partkey
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and l_suppkey = ps_suppkey
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and l_shipdate >= date('1993-01-01')
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and l_shipdate < date('1993-01-01') +
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interval '1' year ))
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and s_nationkey = n_nationkey
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and n_name = 'UNITED STATES'
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order by s_name
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limit 10;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY nation ALL PRIMARY NULL NULL NULL 25 4.00 Using where; Using temporary; Using filesort
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1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 4.17 Using where
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2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
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4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 100.00 Using where
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Warnings:
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_suppkey' of SELECT #4 was resolved in SELECT #2
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Note 1003 select sql_calc_found_rows `dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address` from `dbt3_s001`.`supplier` semi join (`dbt3_s001`.`part` join `dbt3_s001`.`partsupp`) join `dbt3_s001`.`nation` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`nation`.`n_name` = 'UNITED STATES') and (`dbt3_s001`.`supplier`.`s_nationkey` = `dbt3_s001`.`nation`.`n_nationkey`) and (`dbt3_s001`.`partsupp`.`ps_availqty` > <expr_cache><`dbt3_s001`.`partsupp`.`ps_partkey`,`dbt3_s001`.`partsupp`.`ps_suppkey`>((select (0.5 * sum(`dbt3_s001`.`lineitem`.`l_quantity`)) from `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`lineitem`.`l_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`) and (`dbt3_s001`.`lineitem`.`l_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`lineitem`.`l_shipDATE` >= <cache>(cast('1993-01-01' as date))) and (`dbt3_s001`.`lineitem`.`l_shipDATE` < <cache>((cast('1993-01-01' as date) + interval '1' year))))))) and (`dbt3_s001`.`part`.`p_name` like 'g%')) order by `dbt3_s001`.`supplier`.`s_name` limit 10
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select sql_calc_found_rows
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s_name, s_address
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from supplier, nation
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where s_suppkey in (select ps_suppkey from partsupp
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where ps_partkey in (select p_partkey from part
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where p_name like 'g%')
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and ps_availqty >
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(select 0.5 * sum(l_quantity)
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from lineitem
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where l_partkey = ps_partkey
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and l_suppkey = ps_suppkey
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and l_shipdate >= date('1993-01-01')
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and l_shipdate < date('1993-01-01') +
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interval '1' year ))
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and s_nationkey = n_nationkey
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and n_name = 'UNITED STATES'
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order by s_name
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limit 10;
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s_name s_address
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Supplier#000000010 Saygah3gYWMp72i PY
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DROP DATABASE dbt3_s001;
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set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
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set use_stat_tables=@save_use_stat_tables;
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119
mysql-test/r/selectivity_innodb.result
Normal file
119
mysql-test/r/selectivity_innodb.result
Normal file
@ -0,0 +1,119 @@
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SET SESSION STORAGE_ENGINE='InnoDB';
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set @save_optimizer_switch_for_selectivity_test=@@optimizer_switch;
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set optimizer_switch='extended_keys=on';
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select @@global.use_stat_tables;
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@@global.use_stat_tables
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COMPLEMENTARY
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select @@session.use_stat_tables;
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@@session.use_stat_tables
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COMPLEMENTARY
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set @save_use_stat_tables=@@use_stat_tables;
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set use_stat_tables='preferably';
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DROP DATABASE IF EXISTS dbt3_s001;
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CREATE DATABASE dbt3_s001;
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use dbt3_s001;
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set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
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EXPLAIN EXTENDED select sql_calc_found_rows
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s_name, s_address
|
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from supplier, nation
|
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where s_suppkey in (select ps_suppkey from partsupp
|
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where ps_partkey in (select p_partkey from part
|
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where p_name like 'g%')
|
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and ps_availqty >
|
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(select 0.5 * sum(l_quantity)
|
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from lineitem
|
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where l_partkey = ps_partkey
|
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and l_suppkey = ps_suppkey
|
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and l_shipdate >= date('1993-01-01')
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and l_shipdate < date('1993-01-01') +
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interval '1' year ))
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and s_nationkey = n_nationkey
|
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and n_name = 'UNITED STATES'
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order by s_name
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limit 10;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 100.00 Using where; Using filesort
|
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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1 PRIMARY nation eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
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2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 100.00 Using where
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2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
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4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 100.00 Using where
|
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Warnings:
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
|
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_suppkey' of SELECT #4 was resolved in SELECT #2
|
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Note 1003 select sql_calc_found_rows `dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address` from `dbt3_s001`.`supplier` semi join (`dbt3_s001`.`part` join `dbt3_s001`.`partsupp`) join `dbt3_s001`.`nation` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`nation`.`n_name` = 'UNITED STATES') and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`partsupp`.`ps_availqty` > <expr_cache><`dbt3_s001`.`partsupp`.`ps_partkey`,`dbt3_s001`.`partsupp`.`ps_suppkey`>((select (0.5 * sum(`dbt3_s001`.`lineitem`.`l_quantity`)) from `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`lineitem`.`l_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`) and (`dbt3_s001`.`lineitem`.`l_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`lineitem`.`l_shipDATE` >= <cache>(cast('1993-01-01' as date))) and (`dbt3_s001`.`lineitem`.`l_shipDATE` < <cache>((cast('1993-01-01' as date) + interval '1' year))))))) and (`dbt3_s001`.`part`.`p_name` like 'g%')) order by `dbt3_s001`.`supplier`.`s_name` limit 10
|
||||
select sql_calc_found_rows
|
||||
s_name, s_address
|
||||
from supplier, nation
|
||||
where s_suppkey in (select ps_suppkey from partsupp
|
||||
where ps_partkey in (select p_partkey from part
|
||||
where p_name like 'g%')
|
||||
and ps_availqty >
|
||||
(select 0.5 * sum(l_quantity)
|
||||
from lineitem
|
||||
where l_partkey = ps_partkey
|
||||
and l_suppkey = ps_suppkey
|
||||
and l_shipdate >= date('1993-01-01')
|
||||
and l_shipdate < date('1993-01-01') +
|
||||
interval '1' year ))
|
||||
and s_nationkey = n_nationkey
|
||||
and n_name = 'UNITED STATES'
|
||||
order by s_name
|
||||
limit 10;
|
||||
s_name s_address
|
||||
Supplier#000000010 Saygah3gYWMp72i PY
|
||||
set optimizer_use_condition_selectivity=3;
|
||||
EXPLAIN EXTENDED select sql_calc_found_rows
|
||||
s_name, s_address
|
||||
from supplier, nation
|
||||
where s_suppkey in (select ps_suppkey from partsupp
|
||||
where ps_partkey in (select p_partkey from part
|
||||
where p_name like 'g%')
|
||||
and ps_availqty >
|
||||
(select 0.5 * sum(l_quantity)
|
||||
from lineitem
|
||||
where l_partkey = ps_partkey
|
||||
and l_suppkey = ps_suppkey
|
||||
and l_shipdate >= date('1993-01-01')
|
||||
and l_shipdate < date('1993-01-01') +
|
||||
interval '1' year ))
|
||||
and s_nationkey = n_nationkey
|
||||
and n_name = 'UNITED STATES'
|
||||
order by s_name
|
||||
limit 10;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY nation ALL PRIMARY NULL NULL NULL 25 4.00 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
|
||||
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
|
||||
2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 4.17 Using where
|
||||
2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
|
||||
4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 100.00 Using where
|
||||
Warnings:
|
||||
Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
|
||||
Note 1276 Field or reference 'dbt3_s001.partsupp.ps_suppkey' of SELECT #4 was resolved in SELECT #2
|
||||
Note 1003 select sql_calc_found_rows `dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address` from `dbt3_s001`.`supplier` semi join (`dbt3_s001`.`part` join `dbt3_s001`.`partsupp`) join `dbt3_s001`.`nation` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`nation`.`n_name` = 'UNITED STATES') and (`dbt3_s001`.`supplier`.`s_nationkey` = `dbt3_s001`.`nation`.`n_nationkey`) and (`dbt3_s001`.`partsupp`.`ps_availqty` > <expr_cache><`dbt3_s001`.`partsupp`.`ps_partkey`,`dbt3_s001`.`partsupp`.`ps_suppkey`>((select (0.5 * sum(`dbt3_s001`.`lineitem`.`l_quantity`)) from `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`lineitem`.`l_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`) and (`dbt3_s001`.`lineitem`.`l_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`lineitem`.`l_shipDATE` >= <cache>(cast('1993-01-01' as date))) and (`dbt3_s001`.`lineitem`.`l_shipDATE` < <cache>((cast('1993-01-01' as date) + interval '1' year))))))) and (`dbt3_s001`.`part`.`p_name` like 'g%')) order by `dbt3_s001`.`supplier`.`s_name` limit 10
|
||||
select sql_calc_found_rows
|
||||
s_name, s_address
|
||||
from supplier, nation
|
||||
where s_suppkey in (select ps_suppkey from partsupp
|
||||
where ps_partkey in (select p_partkey from part
|
||||
where p_name like 'g%')
|
||||
and ps_availqty >
|
||||
(select 0.5 * sum(l_quantity)
|
||||
from lineitem
|
||||
where l_partkey = ps_partkey
|
||||
and l_suppkey = ps_suppkey
|
||||
and l_shipdate >= date('1993-01-01')
|
||||
and l_shipdate < date('1993-01-01') +
|
||||
interval '1' year ))
|
||||
and s_nationkey = n_nationkey
|
||||
and n_name = 'UNITED STATES'
|
||||
order by s_name
|
||||
limit 10;
|
||||
s_name s_address
|
||||
Supplier#000000010 Saygah3gYWMp72i PY
|
||||
DROP DATABASE dbt3_s001;
|
||||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
set optimizer_switch=@save_optimizer_switch_for_selectivity_test;
|
||||
SET SESSION STORAGE_ENGINE=DEFAULT;
|
||||
@ -0,0 +1,101 @@
|
||||
SET @start_global_value = @@global.optimizer_use_condition_selectivity;
|
||||
SELECT @start_global_value;
|
||||
@start_global_value
|
||||
1
|
||||
SET @start_session_value = @@session.optimizer_use_condition_selectivity;
|
||||
SELECT @start_session_value;
|
||||
@start_session_value
|
||||
1
|
||||
'#--------------------FN_DYNVARS_115_01-------------------------#'
|
||||
SET @@global.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
@@global.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@session.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
@@session.optimizer_use_condition_selectivity
|
||||
1
|
||||
'#--------------------FN_DYNVARS_115_02-------------------------#'
|
||||
SET @@global.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@global.optimizer_use_condition_selectivity = 1;
|
||||
@@global.optimizer_use_condition_selectivity = 1
|
||||
1
|
||||
SET @@session.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@session.optimizer_use_condition_selectivity = 1;
|
||||
@@session.optimizer_use_condition_selectivity = 1
|
||||
1
|
||||
'#--------------------FN_DYNVARS_115_03-------------------------#'
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
@@global.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@global.optimizer_use_condition_selectivity = 1;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
@@global.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@global.optimizer_use_condition_selectivity = 2;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
@@global.optimizer_use_condition_selectivity
|
||||
2
|
||||
SET @@global.optimizer_use_condition_selectivity = 3;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
@@global.optimizer_use_condition_selectivity
|
||||
3
|
||||
'#--------------------FN_DYNVARS_115_04-------------------------#'
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
@@session.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@session.optimizer_use_condition_selectivity = 1;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
@@session.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@session.optimizer_use_condition_selectivity = 2;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
@@session.optimizer_use_condition_selectivity
|
||||
2
|
||||
SET @@session.optimizer_use_condition_selectivity = 3;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
@@session.optimizer_use_condition_selectivity
|
||||
3
|
||||
'#------------------FN_DYNVARS_115_05-----------------------#'
|
||||
SET @@global.optimizer_use_condition_selectivity = ON;
|
||||
ERROR 42000: Incorrect argument type to variable 'optimizer_use_condition_selectivity'
|
||||
SET @@global.optimizer_use_condition_selectivity = OFF;
|
||||
ERROR 42000: Incorrect argument type to variable 'optimizer_use_condition_selectivity'
|
||||
SET @@session.optimizer_use_condition_selectivity = 65530.34;
|
||||
ERROR 42000: Incorrect argument type to variable 'optimizer_use_condition_selectivity'
|
||||
SET @@session.optimizer_use_condition_selectivity = test;
|
||||
ERROR 42000: Incorrect argument type to variable 'optimizer_use_condition_selectivity'
|
||||
'#------------------FN_DYNVARS_115_06-----------------------#'
|
||||
SELECT @@global.optimizer_use_condition_selectivity = VARIABLE_VALUE
|
||||
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
|
||||
WHERE VARIABLE_NAME='optimizer_use_condition_selectivity';
|
||||
@@global.optimizer_use_condition_selectivity = VARIABLE_VALUE
|
||||
1
|
||||
'#------------------FN_DYNVARS_115_07-----------------------#'
|
||||
SELECT @@session.optimizer_use_condition_selectivity = VARIABLE_VALUE
|
||||
FROM INFORMATION_SCHEMA.SESSION_VARIABLES
|
||||
WHERE VARIABLE_NAME='optimizer_use_condition_selectivity';
|
||||
@@session.optimizer_use_condition_selectivity = VARIABLE_VALUE
|
||||
1
|
||||
'#---------------------FN_DYNVARS_115_08----------------------#'
|
||||
SET @@optimizer_use_condition_selectivity = 1;
|
||||
SET @@global.optimizer_use_condition_selectivity = 3;
|
||||
SELECT @@optimizer_use_condition_selectivity = @@global.optimizer_use_condition_selectivity;
|
||||
@@optimizer_use_condition_selectivity = @@global.optimizer_use_condition_selectivity
|
||||
0
|
||||
'#---------------------FN_DYNVARS_115_09----------------------#'
|
||||
SET @@optimizer_use_condition_selectivity = 2;
|
||||
SELECT @@optimizer_use_condition_selectivity = @@local.optimizer_use_condition_selectivity;
|
||||
@@optimizer_use_condition_selectivity = @@local.optimizer_use_condition_selectivity
|
||||
1
|
||||
SELECT @@local.optimizer_use_condition_selectivity = @@session.optimizer_use_condition_selectivity;
|
||||
@@local.optimizer_use_condition_selectivity = @@session.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@global.optimizer_use_condition_selectivity = @start_global_value;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
@@global.optimizer_use_condition_selectivity
|
||||
1
|
||||
SET @@session.optimizer_use_condition_selectivity = @start_session_value;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
@@session.optimizer_use_condition_selectivity
|
||||
1
|
||||
@ -0,0 +1,138 @@
|
||||
|
||||
--source include/load_sysvars.inc
|
||||
|
||||
#################################################################
|
||||
# START OF optimizer_use_condition_selectivity TESTS #
|
||||
#################################################################
|
||||
|
||||
|
||||
#############################################################
|
||||
# Save initial value #
|
||||
#############################################################
|
||||
|
||||
SET @start_global_value = @@global.optimizer_use_condition_selectivity;
|
||||
SELECT @start_global_value;
|
||||
SET @start_session_value = @@session.optimizer_use_condition_selectivity;
|
||||
SELECT @start_session_value;
|
||||
|
||||
|
||||
--echo '#--------------------FN_DYNVARS_115_01-------------------------#'
|
||||
#########################################################################
|
||||
# Display the DEFAULT value of optimizer_use_condition_selectivity #
|
||||
#########################################################################
|
||||
|
||||
SET @@global.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
|
||||
SET @@session.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
|
||||
|
||||
--echo '#--------------------FN_DYNVARS_115_02-------------------------#'
|
||||
#########################################################################
|
||||
# Check the DEFAULT value of optimizer_use_condition_selectivity #
|
||||
#########################################################################
|
||||
|
||||
SET @@global.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@global.optimizer_use_condition_selectivity = 1;
|
||||
|
||||
SET @@session.optimizer_use_condition_selectivity = DEFAULT;
|
||||
SELECT @@session.optimizer_use_condition_selectivity = 1;
|
||||
|
||||
|
||||
--echo '#--------------------FN_DYNVARS_115_03-------------------------#'
|
||||
#############################################################################################
|
||||
# Change the value of optimizer_use_condition_selectivity to a valid value for GLOBAL Scope #
|
||||
#############################################################################################
|
||||
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
SET @@global.optimizer_use_condition_selectivity = 1;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
SET @@global.optimizer_use_condition_selectivity = 2;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
SET @@global.optimizer_use_condition_selectivity = 3;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
|
||||
|
||||
--echo '#--------------------FN_DYNVARS_115_04-------------------------#'
|
||||
#############################################################################################
|
||||
# Change the value of optimizer_use_condition_selectivity to a valid value for SESSION Scope#
|
||||
#############################################################################################
|
||||
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
SET @@session.optimizer_use_condition_selectivity = 1;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
SET @@session.optimizer_use_condition_selectivity = 2;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
SET @@session.optimizer_use_condition_selectivity = 3;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
|
||||
|
||||
--echo '#------------------FN_DYNVARS_115_05-----------------------#'
|
||||
###############################################################################
|
||||
# Change the value of optimizer_use_condition_selectivity to an invalid value #
|
||||
##############################################################################
|
||||
|
||||
--Error ER_WRONG_TYPE_FOR_VAR
|
||||
SET @@global.optimizer_use_condition_selectivity = ON;
|
||||
--Error ER_WRONG_TYPE_FOR_VAR
|
||||
SET @@global.optimizer_use_condition_selectivity = OFF;
|
||||
--Error ER_WRONG_TYPE_FOR_VAR
|
||||
SET @@session.optimizer_use_condition_selectivity = 65530.34;
|
||||
--Error ER_WRONG_TYPE_FOR_VAR
|
||||
SET @@session.optimizer_use_condition_selectivity = test;
|
||||
|
||||
--echo '#------------------FN_DYNVARS_115_06-----------------------#'
|
||||
####################################################################
|
||||
# Check if the value in GLOBAL Table matches value in variable #
|
||||
####################################################################
|
||||
|
||||
|
||||
SELECT @@global.optimizer_use_condition_selectivity = VARIABLE_VALUE
|
||||
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
|
||||
WHERE VARIABLE_NAME='optimizer_use_condition_selectivity';
|
||||
|
||||
--echo '#------------------FN_DYNVARS_115_07-----------------------#'
|
||||
####################################################################
|
||||
# Check if the value in SESSION Table matches value in variable #
|
||||
####################################################################
|
||||
|
||||
SELECT @@session.optimizer_use_condition_selectivity = VARIABLE_VALUE
|
||||
FROM INFORMATION_SCHEMA.SESSION_VARIABLES
|
||||
WHERE VARIABLE_NAME='optimizer_use_condition_selectivity';
|
||||
|
||||
|
||||
--echo '#---------------------FN_DYNVARS_115_08----------------------#'
|
||||
###############################################################################
|
||||
# Check if global and session variable are independent of each other #
|
||||
###############################################################################
|
||||
|
||||
SET @@optimizer_use_condition_selectivity = 1;
|
||||
SET @@global.optimizer_use_condition_selectivity = 3;
|
||||
SELECT @@optimizer_use_condition_selectivity = @@global.optimizer_use_condition_selectivity;
|
||||
|
||||
|
||||
--echo '#---------------------FN_DYNVARS_115_09----------------------#'
|
||||
###############################################################################
|
||||
# Check if accessing variable with SESSION,LOCAL and without SCOPE points #
|
||||
# to same session variable #
|
||||
###############################################################################
|
||||
|
||||
SET @@optimizer_use_condition_selectivity = 2;
|
||||
SELECT @@optimizer_use_condition_selectivity = @@local.optimizer_use_condition_selectivity;
|
||||
SELECT @@local.optimizer_use_condition_selectivity = @@session.optimizer_use_condition_selectivity;
|
||||
|
||||
|
||||
####################################
|
||||
# Restore initial value #
|
||||
####################################
|
||||
|
||||
SET @@global.optimizer_use_condition_selectivity = @start_global_value;
|
||||
SELECT @@global.optimizer_use_condition_selectivity;
|
||||
SET @@session.optimizer_use_condition_selectivity = @start_session_value;
|
||||
SELECT @@session.optimizer_use_condition_selectivity;
|
||||
|
||||
########################################################################
|
||||
# END OF optimizer_use_condition_selectivity TESTS #
|
||||
########################################################################
|
||||
|
||||
65
mysql-test/t/selectivity.test
Normal file
65
mysql-test/t/selectivity.test
Normal file
@ -0,0 +1,65 @@
|
||||
--source include/have_stat_tables.inc
|
||||
|
||||
select @@global.use_stat_tables;
|
||||
select @@session.use_stat_tables;
|
||||
|
||||
set @save_use_stat_tables=@@use_stat_tables;
|
||||
|
||||
set use_stat_tables='preferably';
|
||||
|
||||
--disable_warnings
|
||||
DROP DATABASE IF EXISTS dbt3_s001;
|
||||
--enable_warnings
|
||||
|
||||
CREATE DATABASE dbt3_s001;
|
||||
|
||||
use dbt3_s001;
|
||||
|
||||
set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
|
||||
|
||||
--disable_query_log
|
||||
--disable_result_log
|
||||
--disable_warnings
|
||||
--source include/dbt3_s001.inc
|
||||
|
||||
ANALYZE TABLE
|
||||
customer, lineitem, nation, orders, part, partsupp, region, supplier;
|
||||
FLUSH TABLE
|
||||
customer, lineitem, nation, orders, part, partsupp, region, supplier;
|
||||
--enable_warnings
|
||||
--enable_result_log
|
||||
--enable_query_log
|
||||
|
||||
let $Q20=
|
||||
select sql_calc_found_rows
|
||||
s_name, s_address
|
||||
from supplier, nation
|
||||
where s_suppkey in (select ps_suppkey from partsupp
|
||||
where ps_partkey in (select p_partkey from part
|
||||
where p_name like 'g%')
|
||||
and ps_availqty >
|
||||
(select 0.5 * sum(l_quantity)
|
||||
from lineitem
|
||||
where l_partkey = ps_partkey
|
||||
and l_suppkey = ps_suppkey
|
||||
and l_shipdate >= date('1993-01-01')
|
||||
and l_shipdate < date('1993-01-01') +
|
||||
interval '1' year ))
|
||||
and s_nationkey = n_nationkey
|
||||
and n_name = 'UNITED STATES'
|
||||
order by s_name
|
||||
limit 10;
|
||||
|
||||
eval EXPLAIN EXTENDED $Q20;
|
||||
eval $Q20;
|
||||
|
||||
set optimizer_use_condition_selectivity=3;
|
||||
|
||||
eval EXPLAIN EXTENDED $Q20;
|
||||
eval $Q20;
|
||||
|
||||
DROP DATABASE dbt3_s001;
|
||||
|
||||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
12
mysql-test/t/selectivity_innodb.test
Normal file
12
mysql-test/t/selectivity_innodb.test
Normal file
@ -0,0 +1,12 @@
|
||||
--source include/have_innodb.inc
|
||||
|
||||
SET SESSION STORAGE_ENGINE='InnoDB';
|
||||
|
||||
set @save_optimizer_switch_for_selectivity_test=@@optimizer_switch;
|
||||
set optimizer_switch='extended_keys=on';
|
||||
|
||||
--source selectivity.test
|
||||
|
||||
set optimizer_switch=@save_optimizer_switch_for_selectivity_test;
|
||||
|
||||
SET SESSION STORAGE_ENGINE=DEFAULT;
|
||||
Reference in New Issue
Block a user