mirror of
https://github.com/MariaDB/server.git
synced 2025-10-31 02:46:29 +01:00
91 lines
2.3 KiB
Text
91 lines
2.3 KiB
Text
set @innodb_stats_persistent_save= @@innodb_stats_persistent;
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set @innodb_stats_persistent_sample_pages_save=
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@@innodb_stats_persistent_sample_pages;
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set global innodb_stats_persistent= 1;
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set global innodb_stats_persistent_sample_pages=100;
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--source include/have_innodb.inc
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--source include/no_valgrind_without_big.inc
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SET SESSION DEFAULT_STORAGE_ENGINE='InnoDB';
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select @@global.use_stat_tables;
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select @@session.use_stat_tables;
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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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--disable_warnings
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DROP DATABASE IF EXISTS dbt3_s001;
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--enable_warnings
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CREATE DATABASE dbt3_s001;
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use dbt3_s001;
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set @save_optimizer_switch=@@optimizer_switch;
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set optimizer_switch='extended_keys=off';
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set optimizer_switch='rowid_filter=off';
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--disable_query_log
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--disable_result_log
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--disable_warnings
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--source include/dbt3_s001.inc
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delete from mysql.table_stats;
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delete from mysql.column_stats;
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delete from mysql.index_stats;
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ANALYZE TABLE
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customer, lineitem, nation, orders, part, partsupp, region, supplier;
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--enable_warnings
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--enable_result_log
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--enable_query_log
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--echo #
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--echo # Bug mdev-503: optimizer ignores setting use_stat_tables='preferably'
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--echo #
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flush tables
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customer, lineitem, nation, orders, part, partsupp, region, supplier;
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let $Q3S=
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select sql_calc_found_rows straight_join
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l_orderkey, sum(l_extendedprice*(1-l_discount)) as revenue,
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o_orderdate, o_shippriority
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from orders, customer, lineitem
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where c_mktsegment = 'BUILDING' and c_custkey = o_custkey
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and l_orderkey = o_orderkey and o_orderdate < date '1995-03-15'
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and l_shipdate > date '1995-03-15'
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group by l_orderkey, o_orderdate, o_shippriority
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order by revenue desc, o_orderdate
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limit 10;
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set use_stat_tables='never';
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--replace_column 9 #
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eval EXPLAIN $Q3S;
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set use_stat_tables='preferably';
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--replace_result 2 1
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eval EXPLAIN $Q3S;
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flush tables customer, orders, lineitem;
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eval EXPLAIN $Q3S;
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--echo # End of the test case for mdev-503
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set optimizer_switch=@save_optimizer_switch;
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DROP DATABASE dbt3_s001;
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use test;
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set use_stat_tables=@save_use_stat_tables;
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SET SESSION DEFAULT_STORAGE_ENGINE=DEFAULT;
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set global innodb_stats_persistent= @innodb_stats_persistent_save;
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set global innodb_stats_persistent_sample_pages=
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@innodb_stats_persistent_sample_pages_save;
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