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88 lines
2.2 KiB
Plaintext
88 lines
2.2 KiB
Plaintext
--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_use_condition_selectivity=@@optimizer_use_condition_selectivity;
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set @save_histogram_size=@@histogram_size;
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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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ANALYZE TABLE
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customer, lineitem, nation, orders, part, partsupp, region, supplier;
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FLUSH 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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let $Q20=
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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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eval EXPLAIN EXTENDED $Q20;
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eval $Q20;
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set optimizer_use_condition_selectivity=3;
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eval EXPLAIN EXTENDED $Q20;
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eval $Q20;
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set histogram_size=15;
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flush table part;
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ANALYZE TABLE part PERSISTENT FOR COLUMNS(p_name) INDEXES();
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set optimizer_use_condition_selectivity=4;
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eval EXPLAIN EXTENDED $Q20;
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eval $Q20;
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set histogram_size=24;
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flush table nation;
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ANALYZE TABLE nation PERSISTENT FOR COLUMNS(n_name) INDEXES();
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eval EXPLAIN EXTENDED $Q20;
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eval $Q20;
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DROP DATABASE dbt3_s001;
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set histogram_size=@save_histogram_size;
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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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