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69d7bfd970
No need to read statistics for tables that are not USER tables. We allocate memory for structures to collect statistics only for USER TABLES.
370 lines
11 KiB
Text
370 lines
11 KiB
Text
--source include/have_stat_tables.inc
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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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--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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create index i_p_retailprice on part(p_retailprice);
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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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FLUSH TABLE mysql.table_stats, mysql.index_stats;
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--enable_warnings
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--enable_result_log
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--enable_query_log
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select * from mysql.table_stats;
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select * from mysql.index_stats;
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set optimizer_switch=@save_optimizer_switch;
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set @save_optimizer_switch=@@optimizer_switch;
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set optimizer_switch='index_condition_pushdown=off';
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let $Q5=
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select n_name, sum(l_extendedprice * (1 - l_discount)) as revenue
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from customer, orders, lineitem, supplier, nation, region
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where c_custkey = o_custkey and l_orderkey = o_orderkey
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and l_suppkey = s_suppkey and c_nationkey = s_nationkey
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and s_nationkey = n_nationkey and n_regionkey = r_regionkey
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and r_name = 'AMERICA' and o_orderdate >= date '1995-01-01'
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and o_orderdate < date '1995-01-01' + interval '1' year
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group by n_name
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order by revenue desc;
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eval EXPLAIN $Q5;
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eval $Q5;
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set optimizer_switch=@save_optimizer_switch;
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delete from mysql.index_stats;
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--disable_query_log
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--disable_result_log
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--disable_warnings
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ANALYZE TABLE
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customer, lineitem, nation, orders, part, partsupp, region, supplier;
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FLUSH TABLE mysql.table_stats, mysql.index_stats;
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--enable_warnings
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--enable_result_log
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--enable_query_log
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select * from mysql.table_stats;
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select * from mysql.index_stats;
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select * from mysql.table_stats where table_name='orders';
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select * from mysql.index_stats where table_name='orders';
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select (select cardinality from mysql.table_stats where table_name='orders') /
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(select avg_frequency from mysql.index_stats
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where index_name='i_o_orderdate' and prefix_arity=1) as n_distinct;
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select count(distinct o_orderdate) from orders;
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select (select cardinality from mysql.table_stats where table_name='orders') /
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(select avg_frequency from mysql.index_stats
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where index_name='i_o_custkey' and prefix_arity=1) as n_distinct;
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select count(distinct o_custkey) from orders;
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show index from orders;
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select index_name, column_name, cardinality from information_schema.statistics
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where table_name='orders';
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set @save_optimizer_switch=@@optimizer_switch;
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set optimizer_switch='index_condition_pushdown=off';
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eval EXPLAIN $Q5;
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eval $Q5;
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set optimizer_switch=@save_optimizer_switch;
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let $Q8=
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select o_year,
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sum(case when nation = 'UNITED STATES' then volume else 0 end) /
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sum(volume) as mkt_share
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from (select extract(year from o_orderdate) as o_year,
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l_extendedprice * (1-l_discount) as volume,
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n2.n_name as nation
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from part, supplier, lineitem, orders, customer,
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nation n1, nation n2, region
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where p_partkey = l_partkey and s_suppkey = l_suppkey
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and l_orderkey = o_orderkey and o_custkey = c_custkey
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and c_nationkey = n1.n_nationkey and n1.n_regionkey = r_regionkey
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and r_name = 'AMERICA' and s_nationkey = n2.n_nationkey
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and o_orderdate between date '1995-01-01' and date '1996-12-31'
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and p_type = 'STANDARD BRUSHED STEEL' ) as all_nations
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group by o_year
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order by o_year;
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eval EXPLAIN $Q8;
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eval $Q8;
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let $Q9=
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select nation, o_year, sum(amount) as sum_profit
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from (select n_name as nation,
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extract(year from o_orderdate) as o_year,
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l_extendedprice * (1 - l_discount) - ps_supplycost * l_quantity as amount
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from part, supplier, lineitem, partsupp, orders, nation
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where s_suppkey = l_suppkey and ps_suppkey = l_suppkey
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and ps_partkey = l_partkey and p_partkey = l_partkey
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and o_orderkey = l_orderkey and s_nationkey = n_nationkey
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and p_name like '%green%') as profit
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group by nation, o_year
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order by nation, o_year desc;
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eval EXPLAIN $Q9;
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eval $Q9;
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set @save_optimizer_switch=@@optimizer_switch;
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set optimizer_switch='extended_keys=on';
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let $QQ1=
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select o_orderkey, p_partkey
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from part, lineitem, orders
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where p_retailprice > 1100 and o_orderdate='1997-01-01'
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and o_orderkey=l_orderkey and p_partkey=l_partkey;
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eval EXPLAIN $QQ1;
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eval $QQ1;
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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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--echo #
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--echo # Bug mdev-473: ANALYZE table locked for write
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--echo #
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set use_stat_tables='complementary';
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create table t1 (i int);
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lock table t1 write;
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analyze table t1;
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alter table t1 add column a varchar(8);
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drop table t1;
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--echo #
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--echo # Bug mdev-487: memory leak in ANALYZE with stat tables
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--echo #
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SET use_stat_tables = 'preferably';
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CREATE TABLE t1 (a INT);
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INSERT INTO t1 VALUES (1),(2);
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DELETE FROM t1 WHERE a=1;
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ANALYZE TABLE t1;
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DROP TABLE t1;
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--echo #
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--echo # Bug mdev-518: corrupted/missing statistical tables
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--echo #
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CREATE TABLE t1 (i int) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1),(2);
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FLUSH TABLE t1;
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SET use_stat_tables='never';
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EXPLAIN SELECT * FROM t1;
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--move_file $MYSQLTEST_VARDIR/mysqld.1/data/mysql/table_stats.MYD $MYSQLTEST_VARDIR/mysqld.1/data/mysql/table_stats.MYD.save
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FLUSH TABLES;
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SET use_stat_tables='preferably';
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--disable_warnings
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EXPLAIN SELECT * FROM t1;
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--enable_warnings
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# Cleanup
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--move_file $MYSQLTEST_VARDIR/mysqld.1/data/mysql/table_stats.MYD.save $MYSQLTEST_VARDIR/mysqld.1/data/mysql/table_stats.MYD
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DROP TABLE t1;
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set use_stat_tables=@save_use_stat_tables;
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--echo #
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--echo # Bug mdev-5204: invalid impossible where after reading const tables
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--echo # when use_stat_tables = 'preferably'
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--echo #
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set use_stat_tables = 'preferably';
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CREATE TABLE t1 (id int PRIMARY KEY) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1),(2);
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ANALYZE TABLE t1;
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CREATE TABLE t2 (name char(3)) ENGINE=MyISAM;
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ANALYZE TABLE t2;
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INSERT INTO t2 VALUES ('USA'),('AUS');
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SELECT * FROM t1 STRAIGHT_JOIN t2 WHERE name IN ( 'AUS','YEM' ) AND id = 1;
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EXPLAIN
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SELECT * FROM t1 STRAIGHT_JOIN t2 WHERE name IN ( 'AUS','YEM' ) AND id = 1;
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ANALYZE TABLE t2;
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SELECT * FROM t1 STRAIGHT_JOIN t2 WHERE name IN ( 'AUS','YEM' ) AND id = 1;
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EXPLAIN
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SELECT * FROM t1 STRAIGHT_JOIN t2 WHERE name IN ( 'AUS','YEM' ) AND id = 1;
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DROP TABLE t1,t2;
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--echo #
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--echo # MDEV-7370: Server deadlocks on renaming a table for which persistent statistics exists
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--echo #
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--disable_warnings
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drop database if exists db1;
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drop database if exists db1;
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--enable_warnings
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create database db1;
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create database db2;
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use db1;
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--echo #
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--echo # First, run the original testcase:
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--echo #
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create table t1 (i int);
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insert into t1 values (10),(20);
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analyze table t1 persistent for all;
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rename table t1 to db2.t1;
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--echo # Verify that stats in the old database are gone:
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select * from mysql.column_stats where db_name='db1' and table_name='t1';
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select * from mysql.table_stats where db_name='db1' and table_name='t1';
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--echo # Verify that stats are present in the new database:
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select * from mysql.column_stats where db_name='db2' and table_name='t1';
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select * from mysql.table_stats where db_name='db2' and table_name='t1';
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--echo #
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--echo # Now, try with more than one column and with indexes:
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--echo #
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use test;
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create table t1(a int primary key);
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insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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use db1;
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create table t2 (a int, b int, c int, key IDX1(a), key IDX2(a,b));
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insert into t2 select a/10, a/2, a from test.t1;
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analyze table t2 persistent for all;
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alter table t2 rename db2.t2;
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--echo # Verify that stats in the old database are gone:
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select * from mysql.table_stats where db_name='db1' and table_name='t2';
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select * from mysql.column_stats where db_name='db1' and table_name='t2';
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select * from mysql.index_stats where db_name='db1' and table_name='t2';
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--echo # Verify that stats are present in the new database:
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select * from mysql.table_stats where db_name='db2' and table_name='t2';
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select * from mysql.column_stats where db_name='db2' and table_name='t2';
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select * from mysql.index_stats where db_name='db2' and table_name='t2';
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use db2;
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--echo #
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--echo # Now, rename within the same database and verify:
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--echo #
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rename table t2 to t3;
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--echo # No stats under old name:
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select * from mysql.table_stats where db_name='db2' and table_name='t2';
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select * from mysql.column_stats where db_name='db2' and table_name='t2';
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select * from mysql.index_stats where db_name='db2' and table_name='t2';
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--echo # Stats under the new name:
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select * from mysql.table_stats where db_name='db2' and table_name='t3';
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select * from mysql.column_stats where db_name='db2' and table_name='t3';
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select * from mysql.index_stats where db_name='db2' and table_name='t3';
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use test;
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drop database db1;
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drop database db2;
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drop table t1;
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--echo #
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--echo # MDEV-16552: [10.0] ASAN global-buffer-overflow in is_stat_table / statistics_for_tables_is_needed
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--echo #
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SET use_stat_tables = PREFERABLY;
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SELECT CONVERT_TZ( '1991-09-20 10:11:02', '+00:00', 'GMT' );
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set use_stat_tables=@save_use_stat_tables;
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--echo #
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--echo # MDEV-16757: manual addition of min/max statistics for BLOB
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--echo #
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SET use_stat_tables= PREFERABLY;
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CREATE TABLE t1 (pk INT PRIMARY KEY, t TEXT);
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INSERT INTO t1 VALUES (1,'foo'),(2,'bar');
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ANALYZE TABLE t1;
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--sorted_result
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SELECT * FROM mysql.column_stats;
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DELETE FROM mysql.column_stats
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WHERE db_name='test' AND table_name='t1' AND column_name='t';
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INSERT INTO mysql.column_stats VALUES
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('test','t1','t','bar','foo', 0.0, 3.0, 1.0, 0, NULL, NULL);
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--sorted_result
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SELECT * FROM mysql.column_stats;
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SELECT pk FROM t1;
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DROP TABLE t1;
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set use_stat_tables=@save_use_stat_tables;
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--echo #
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--echo # MDEV-16760: CREATE OR REPLACE TABLE after ANALYZE TABLE
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--echo #
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SET use_stat_tables= PREFERABLY;
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CREATE TABLE t1 (pk int PRIMARY KEY, c varchar(32));
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INSERT INTO t1 VALUES (1,'foo'),(2,'bar');
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ANALYZE TABLE t1;
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SELECT * FROM t1;
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SELECT * FROM mysql.column_stats;
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CREATE OR REPLACE TABLE t1 (pk int PRIMARY KEY, a char(7));
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SELECT * FROM t1;
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SELECT * FROM mysql.column_stats;
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DROP TABLE t1;
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set use_stat_tables=@save_use_stat_tables;
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--echo #
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--echo # MDEV-17023: Crash during read_histogram_for_table with optimizer_use_condition_selectivity set to 4
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--echo #
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set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
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set @@optimizer_use_condition_selectivity=4;
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set @@use_stat_tables= PREFERABLY;
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explain
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SELECT * FROM INFORMATION_SCHEMA.PROFILING, mysql.user;
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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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