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MDEV-7487 Semi-join optimization for single-table update/delete statements
This patch allows to use semi-join optimization at the top level of
single-table update and delete statements.
The problem of supporting such optimization became easy to resolve after
processing a single-table update/delete statement started using JOIN
structure. This allowed to use JOIN::prepare() not only for multi-table
updates/deletes but for single-table ones as well. This was done in the
patch for mdev-28883:
Re-design the upper level of handling UPDATE and DELETE statements.
Note that JOIN::prepare() detects all subqueries that can be considered
as candidates for semi-join optimization. The code added by this patch
looks for such candidates at the top level and if such candidates are found
in the processed single-table update/delete the statement is handled in
the same way as a multi-table update/delete.
Approved by Oleksandr Byelkin <sanja@mariadb.com>
This commit is contained in:
Igor Babaev
801
mysql-test/main/delete_single_to_multi.test
Normal file
801
mysql-test/main/delete_single_to_multi.test
Normal file
@ -0,0 +1,801 @@
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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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--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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--enable_warnings
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--enable_result_log
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--enable_query_log
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create index i_n_name on nation(n_name);
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analyze table nation;
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--echo # Pullout
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--echo # =======
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let $c1=
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o_orderDATE between '1992-01-01' and '1992-06-30' and
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o_custkey in (select c_custkey from customer
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where c_nationkey in (select n_nationkey from nation
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where n_name='PERU'));
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eval
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explain
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select o_orderkey, o_totalprice from orders where $c1;
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eval
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explain format=json
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select o_orderkey, o_totalprice from orders where $c1;
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--sorted_result
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eval
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select o_orderkey, o_totalprice from orders where $c1;
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eval
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create table t as
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select * from orders where $c1;
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eval
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explain
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delete from orders where $c1;
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eval
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explain format=json
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delete from orders where $c1;
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eval
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delete from orders where $c1;
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eval
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select o_orderkey, o_totalprice from orders where $c1;
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insert into orders select * from t;
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--sorted_result
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eval
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select o_orderkey, o_totalprice from orders where $c1;
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drop table t;
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let $c2=
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(ps_partkey, ps_suppkey) in
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(select p_partkey, s_suppkey from part, supplier
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where p_retailprice between 901 and 910 and
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s_nationkey in (select n_nationkey from nation
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where n_name='PERU'));
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eval
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explain
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
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--sorted_result
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eval
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
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eval
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create table t as
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select * from partsupp where $c2;
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eval
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explain
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delete from partsupp where $c2;
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eval
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delete from partsupp where $c2;
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eval
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
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insert into partsupp select * from t;
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--sorted_result
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eval
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
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drop table t;
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let $c3=
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ps_partkey in (select p_partkey from part
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where p_retailprice between 901 and 910) and
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ps_suppkey in (select s_suppkey from supplier
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where s_nationkey in (select n_nationkey from nation
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where n_name='PERU'));
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eval
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explain
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
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--sorted_result
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eval
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
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eval
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create table t as
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select * from partsupp where $c3;
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eval
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explain
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delete from partsupp where $c3;
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eval
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delete from partsupp where $c3;
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eval
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
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insert into partsupp select * from t;
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--sorted_result
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eval
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select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
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drop table t;
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let $c4=
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l_orderkey in (select o_orderkey from orders
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where o_custkey in
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(select c_custkey from customer
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where c_nationkey in
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(select n_nationkey from nation
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where n_name='PERU'))
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and
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o_orderDATE between '1992-06-30' and '1992-12-31')
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and
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(l_partkey, l_suppkey) in
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(select p_partkey, s_suppkey from part, supplier
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where p_retailprice between 901 and 1000 and
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s_nationkey in (select n_nationkey from nation
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where n_name='PERU'));
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eval
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explain
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select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
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--sorted_result
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eval
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select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
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eval
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create table t as
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select * from lineitem where $c4;
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eval
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explain
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delete from lineitem where $c4;
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eval
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delete from lineitem where $c4;
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eval
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select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
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insert into lineitem select * from t;
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--sorted_result
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eval
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select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
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drop table t;
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--echo # FirstMatch
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--echo # ==========
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set optimizer_switch='materialization=off';
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let $c5=
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c_nationkey in (select n_nationkey from nation
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where n_regionkey in (1,2))
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and
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c_custkey in (select o_custkey from orders
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where o_orderDATE between '1992-10-09' and '1993-06-08');
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eval
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explain
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select c_name, c_acctbal from customer where $c5;
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eval
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explain format=json
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select c_name, c_acctbal from customer where $c5;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c5;
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eval
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create table t as
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select * from customer where $c5;
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eval
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explain
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delete from customer where $c5;
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eval
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explain format=json
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delete from customer where $c5;
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eval
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delete from customer where $c5;
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eval
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select c_name, c_acctbal from customer where $c5;
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insert into customer select * from t;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c5;
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drop table t;
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set optimizer_switch='materialization=default';
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let $c6=
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c_nationkey in (select n_nationkey from nation where n_name='PERU')
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and
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c_custkey in (select o_custkey from orders
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where o_orderDATE between "1992-01-09" and "1993-01-08");
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eval
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explain
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select c_name, c_acctbal from customer where $c6;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c6;
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eval
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create table t as
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select * from customer where $c6;
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eval
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explain
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delete from customer where $c6;
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eval
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delete from customer where $c6;
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eval
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select c_name, c_acctbal from customer where $c6;
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insert into customer select * from t;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c6;
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drop table t;
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--echo # Materialization
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--echo # ===============
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let $c7=
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c_custkey in (select o_custkey from orders
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where o_orderDATE between '1992-01-09' and '1992-03-08');
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eval
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explain
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select c_name, c_acctbal from customer where $c7;
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eval
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explain format=json
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select c_name, c_acctbal from customer where $c7;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c7;
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eval
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create table t as
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select * from customer where $c7;
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eval
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explain
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delete from customer where $c7;
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eval
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explain format=json
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delete from customer where $c7;
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eval
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delete from customer where $c7;
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eval
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select c_name, c_acctbal from customer where $c7;
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insert into customer select * from t;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c7;
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drop table t;
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let $c8=
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c_custkey in (select o_custkey from orders
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where o_orderDATE between '1992-06-09' and '1993-01-08');
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eval
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explain
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select c_name, c_acctbal from customer where $c8;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c8;
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eval
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create table t as
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select * from customer where $c8;
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eval
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explain
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delete from customer where $c8;
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eval
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delete from customer where $c8;
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eval
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select c_name, c_acctbal from customer where $c8;
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insert into customer select * from t;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c8;
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drop table t;
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--echo # Materialization SJM
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--echo # ===================
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let $c9=
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c_custkey in (select o_custkey from orders
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where o_orderDATE between '1992-01-09' and '1992-03-08'
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group by o_custkey having count(o_custkey) > 1);
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eval
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explain
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select c_name, c_acctbal from customer where $c9;
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eval
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explain format=json
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select c_name, c_acctbal from customer where $c9;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c9;
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eval
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create table t as
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select * from customer where $c9;
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eval
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explain
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delete from customer where $c9;
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eval
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explain format=json
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delete from customer where $c9;
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eval
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delete from customer where $c9;
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eval
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select c_name, c_acctbal from customer where $c9;
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insert into customer select * from t;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c9;
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drop table t;
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let $c10=
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c_custkey in (select o_custkey from orders
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where o_orderDATE between '1992-01-09' and '1993-03-08'
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group by o_custkey having count(o_custkey) > 5);
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eval
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explain
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select c_name, c_acctbal from customer where $c10;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c10;
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eval
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create table t as
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select * from customer where $c10;
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eval
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explain
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delete from customer where $c10;
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eval
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delete from customer where $c10;
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eval
|
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select c_name, c_acctbal from customer where $c10;
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|
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insert into customer select * from t;
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--sorted_result
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eval
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select c_name, c_acctbal from customer where $c10;
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drop table t;
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--echo # Pullout PS
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--echo # ==========
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eval
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prepare stmt from "
|
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delete from orders where $c1;
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";
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--sorted_result
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eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
eval
|
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create table t as
|
||||
select * from orders where $c1;
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execute stmt;
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--sorted_result
|
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eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
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insert into orders select * from t;
|
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--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
eval
|
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create table r as
|
||||
select * from orders where $c1;
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execute stmt;
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--sorted_result
|
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eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
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insert into orders select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
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drop table t,r;
|
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|
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deallocate prepare stmt;
|
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|
||||
|
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--echo # FirstMatch PS
|
||||
--echo # =============
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
delete from customer where $c5;
|
||||
";
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c5;
|
||||
execute stmt;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
eval
|
||||
create table r as
|
||||
select * from customer where $c5;
|
||||
execute stmt;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
insert into customer select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
drop table t,r;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # Materialization PS
|
||||
--echo # ==================
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
delete from customer where $c7 and c_name like ?;
|
||||
";
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
set @a1='Customer#%1_';
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c7 and c_name like @a1;
|
||||
execute stmt using @a1;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
set @a2='Customer#%3_';
|
||||
eval
|
||||
create table r as
|
||||
select * from customer where $c7 and c_name like @a2;
|
||||
execute stmt using @a2;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
insert into customer select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
drop table t,r;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # Materialization SJM PS
|
||||
--echo # ======================
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
delete from customer where $c7 and c_acctbal between ? and ?;
|
||||
";
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
set @a1=3500;
|
||||
set @a2=4000;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c9 and c_acctbal between @a1 and @a2;
|
||||
execute stmt using @a1, @a2;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
set @a3=-1000;
|
||||
set @a4=3500;
|
||||
eval
|
||||
create table r as
|
||||
select * from customer where $c9 and c_acctbal between @a3 and @a4;
|
||||
execute stmt using @a3, @a4;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
insert into customer select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
drop table t,r;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # Pullout SP
|
||||
--echo # ==========
|
||||
|
||||
eval
|
||||
create procedure p(a1 int, a2 int)
|
||||
delete from orders where $c1 and o_totalprice between a1 and a2;
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
eval
|
||||
create table t as
|
||||
select * from orders where $c1 and o_totalprice between 150000 and 200000;
|
||||
call p(150000, 200000);
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
insert into orders select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
eval
|
||||
create table r as
|
||||
select * from orders where $c1 and o_totalprice between 180000 and 210000;
|
||||
call p(180000, 210000);
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
insert into orders select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
drop table t,r;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
|
||||
--echo # FirstMatch SP
|
||||
--echo # =============
|
||||
|
||||
eval
|
||||
create procedure p(a int)
|
||||
delete from customer where $c5 and c_acctbal > a;
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c5 and c_acctbal > 4000;
|
||||
call p(4000);
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
eval
|
||||
create table r as
|
||||
select * from customer where $c5 and c_acctbal > 2000;
|
||||
call p(2000);
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
insert into customer select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
drop table t,r;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
|
||||
--echo # Materialization SP
|
||||
--echo # ==================
|
||||
|
||||
eval
|
||||
create procedure p()
|
||||
delete from customer where $c7;
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c7;
|
||||
call p();
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
eval
|
||||
create table r as
|
||||
select * from customer where $c7;
|
||||
call p();
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
insert into customer select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
drop table t,r;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
|
||||
--echo # Materialization SJM SP
|
||||
--echo # ======================
|
||||
|
||||
eval
|
||||
create procedure p()
|
||||
delete from customer where $c9;
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c9;
|
||||
call p();
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
eval
|
||||
create table r as
|
||||
select * from customer where $c9;
|
||||
call p();
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
insert into customer select * from r;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
drop table t,r;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
--echo # Checking limitations
|
||||
--echo # ====================
|
||||
|
||||
--echo # Check for DELETE ... RETURNING with SJ subquery in WHERE
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c7;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c7;
|
||||
eval
|
||||
explain
|
||||
delete from customer where $c7 returning c_name;
|
||||
--sorted_result
|
||||
eval
|
||||
delete from customer where $c7 returning c_name;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c7;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c7;
|
||||
drop table t;
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c9;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c9;
|
||||
eval
|
||||
explain
|
||||
delete from customer where $c9 returning c_name;
|
||||
--sorted_result
|
||||
eval
|
||||
delete from customer where $c9 returning c_name;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c9;
|
||||
insert into customer select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c9;
|
||||
drop table t;
|
||||
|
||||
--echo # Check for DELETE ... RETURNING with SJ subquery in WHERE
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c7;
|
||||
eval
|
||||
create table t as
|
||||
select * from customer where $c7;
|
||||
eval
|
||||
explain
|
||||
delete from customer where $c7 returning c_name;
|
||||
--sorted_result
|
||||
eval
|
||||
delete from customer where $c7 returning c_name;
|
||||
--sorted_result
|
||||
eval
|
||||
select c_name from customer where $c7;
|
||||
insert into customer select * from t;
|
||||
drop table t;
|
||||
|
||||
--echo # Check for DELETE ... ORDER BY ...LIMIT with SJ subquery in WHERE
|
||||
|
||||
let $c11=
|
||||
o_orderDATE between '1992-01-01' and '1992-06-30' and
|
||||
o_custkey in (select c_custkey from customer
|
||||
where c_nationkey in (1,2));
|
||||
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
|
||||
--echo # Should not use semi-join conversion because has ORDER BY ... LIMIT
|
||||
eval
|
||||
explain
|
||||
delete from orders where $c11
|
||||
order by o_totalprice limit 500;
|
||||
eval
|
||||
create table t as
|
||||
select * from orders where $c11;
|
||||
select o_orderkey, o_totalprice from t;
|
||||
eval
|
||||
delete from orders where $c11
|
||||
order by o_totalprice limit 500;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
insert into orders select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
drop table t;
|
||||
|
||||
--echo # Should use semi-join converion
|
||||
eval
|
||||
explain
|
||||
delete from orders where $c11;
|
||||
eval
|
||||
create table t as
|
||||
select * from orders where $c11;
|
||||
select o_orderkey, o_totalprice from t;
|
||||
eval
|
||||
delete from orders where $c11;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
insert into orders select * from t;
|
||||
--sorted_result
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
drop table t;
|
||||
|
||||
DROP DATABASE dbt3_s001;
|
||||
Reference in New Issue
Block a user