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399 lines
7.9 KiB
Text
399 lines
7.9 KiB
Text
#
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# MDEV-12176 Transform [NOT] IN predicate with long list of values INTO [NOT] IN subquery
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#
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source include/have_debug.inc;
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source include/default_optimizer_switch.inc;
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create table t1 (a int, b int);
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insert into t1
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values (1,2), (4,6), (9,7),
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(1,1), (2,5), (7,8);
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create table t2 (a int, b int, c int);
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insert into t2
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values (1,2,3), (5,1,2), (4,3,7),
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(8,9,0), (10,7,1), (5,5,1);
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create table t3 (a int, b varchar(16), index idx(a));
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insert into t3 values
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(1, "abc"), (3, "egh"), (8, "axxx"), (10, "abc"),
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(2, "ccw"), (8, "wqqe"), (7, "au"), (9, "waa"),
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(3, "rass"), (9, "ert"), (9, "lok"), (8, "aww"),
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(1, "todd"), (3, "rew"), (8, "aww"), (3, "sw"),
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(11, "llk"), (7, "rbw"), (1, "sm"), (2, "jyp"),
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(4, "yq"), (5, "pled"), (12, "ligin"), (12, "toww"),
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(6, "mxm"), (15, "wanone"), (9, "sunqq"), (2, "abe");
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--echo # optimization is not used
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let $query= select * from t1 where a in (1,2);
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eval $query;
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eval explain extended $query;
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--echo # set minimum number of values in VALUEs list when optimization works to 2
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set @@in_predicate_conversion_threshold= 2;
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--echo # single IN-predicate in WHERE-part
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let $query= select * from t1 where a in (1,2);
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let $optimized_query=
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select * from t1
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where a in
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(
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select *
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from (values (1),(2)) as tvc_0
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);
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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--echo # AND-condition with IN-predicates in WHERE-part
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let $query=
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select * from t1
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where a in (1,2) and
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b in (1,5);
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let $optimized_query=
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select * from t1
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where a in
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(
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select *
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from (values (1),(2)) as tvc_0
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)
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and b in
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(
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select *
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from (values (1),(5)) as tvc_1
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);
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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--echo # subquery with IN-predicate
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let $query=
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select * from t1
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where a in
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(
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select a
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from t2 where b in (3,4)
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);
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let $optimized_query=
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select * from t1
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where a in
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(
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select a from t2
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where b in
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(
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select *
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from (values (3),(4)) as tvc_0
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)
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);
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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--echo # derived table with IN-predicate
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let $query=
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select * from
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(
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select *
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from t1
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where a in (1,2)
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) as dr_table;
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let $optimized_query=
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select * from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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) as dr_table;
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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--echo # non-recursive CTE with IN-predicate
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let $cte_query=
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with tvc_0 as
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(
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select *
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from t1
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where a in (1,2)
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)
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select * from tvc_0;
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eval $cte_query;
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eval $optimized_query;
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eval explain extended $cte_query;
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eval explain extended $optimized_query;
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--echo # VIEW with IN-predicate
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create view v1 as
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select *
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from t1
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where a in (1,2);
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create view v2 as
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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;
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let $query= select * from v1;
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let $optimized_query= select * from v2;
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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drop view v1,v2;
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--echo # subselect defined by derived table with IN-predicate
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let $query=
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select * from t1
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where a in
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(
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select 1
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from
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(
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select *
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from t1
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where a in (1,2)
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)
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as dr_table
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);
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let $optimized_query=
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select * from t1
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where a in
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(
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select 1
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from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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)
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as dr_table
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);
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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--echo # derived table with IN-predicate and group by
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let $query=
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select * from
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(
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select max(a),b
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from t1
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where b in (3,5)
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group by b
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) as dr_table;
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let $optimized_query=
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select * from
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(
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select max(a),b
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from t1
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where b in
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(
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select *
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from (values (3),(5))
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as tvc_0
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)
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group by b
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) as dr_table;
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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--echo # prepare statement
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prepare stmt from "select * from t1 where a in (1,2)";
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execute stmt;
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execute stmt;
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deallocate prepare stmt;
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--echo # use inside out access from tvc rows
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let $query= select * from t3 where a in (1,4);
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set @@in_predicate_conversion_threshold= default;
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eval $query;
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eval explain extended $query;
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set @@in_predicate_conversion_threshold= 2;
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eval $query;
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eval explain extended $query;
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--echo # use vectors in IN predeicate
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set @@in_predicate_conversion_threshold= 4;
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let $query=
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select * from t1 where (a,b) in ((1,2),(3,4));
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eval $query;
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eval explain extended $query;
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set @@in_predicate_conversion_threshold= 2;
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--echo # trasformation works for the one IN predicate and doesn't work for the other
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set @@in_predicate_conversion_threshold= 5;
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let $query=
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select * from t2
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where (a,b) in ((1,2),(8,9)) and
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(a,c) in ((1,3),(8,0),(5,1));
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eval $query;
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eval explain extended $query;
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set @@in_predicate_conversion_threshold= 2;
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--echo #
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--echo # mdev-14281: conversion of NOT IN predicate into subquery predicate
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--echo #
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let $query=
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select * from t1
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where (a,b) not in ((1,2),(8,9), (5,1));
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let $optimized_query=
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select * from t1
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where (a,b) not in (select * from (values (1,2),(8,9), (5,1)) as tvc_0);
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eval $query;
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eval $optimized_query;
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eval explain extended $query;
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eval explain extended $optimized_query;
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let $query=
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select * from t1
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where b < 7 and (a,b) not in ((1,2),(8,9), (5,1));
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eval $query;
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eval explain extended $query;
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let $query=
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select * from t2
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where (a,c) not in ((1,2),(8,9), (5,1));
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eval $query;
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eval explain extended $query;
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drop table t1, t2, t3;
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set @@in_predicate_conversion_threshold= default;
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--echo #
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--echo # MDEV-14947: conversion to TVC with only NULL values
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--echo #
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CREATE TABLE t1 (i INT);
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INSERT INTO t1 VALUES (3), (2), (7);
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let $q=
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SELECT * FROM t1 WHERE i IN (NULL, NULL, NULL, NULL, NULL);
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eval $q;
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eval EXPLAIN EXTENDED $q;
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SET in_predicate_conversion_threshold= 5;
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eval $q;
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eval EXPLAIN EXTENDED $q;
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SET in_predicate_conversion_threshold= default;
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DROP TABLE t1;
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--echo #
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--echo # MDEV-14835: conversion to TVC with BIGINT or YEAR values
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--echo #
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SET @@in_predicate_conversion_threshold= 2;
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CREATE TABLE t1 (a BIGINT);
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CREATE TABLE t2 (y YEAR);
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INSERT INTO t1 VALUES (1), (2), (3);
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INSERT INTO t2 VALUES (2009), (2010), (2011);
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SELECT * FROM t1 WHERE a IN ('1','5','3');
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SELECT * FROM t2 WHERE y IN ('2009','2011');
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DROP TABLE t1,t2;
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SET @@in_predicate_conversion_threshold= default;
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--echo #
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--echo # MDEV-17222: conversion to TVC with no names for constants
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--echo # conversion to TVC with the same constants in the first row
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--echo #
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SET @@in_predicate_conversion_threshold= 2;
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CREATE TABLE t1 (f BINARY(16)) ENGINE=MYISAM;
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INSERT INTO t1 VALUES
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(x'BAE56AF2B1C2397D99D58E2A06761DDB'), (x'9B9B698BCCB939EE8F1EA56C1A2E5DAA'),
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(x'A0A1C4FE39A239BABD3E0D8985E6BEA5');
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SELECT COUNT(*) FROM t1 WHERE f IN
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(x'9B9B698BCCB939EE8F1EA56C1A2E5DAA', x'E2362DBAB5EA30B5804917A0A7D881E2',
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x'B78B2EEAD13635088D93EA3309E24802', x'BAE56AF2B1C2397D99D58E2A06761DDB');
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CREATE TABLE t2 (f1 BINARY(16), f2 BINARY(16)) ENGINE=MYISAM;
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INSERT INTO t2 VALUES
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(x'55FB3B14D6B83D39859E42533906350D', x'00F3458C47FA39DDBEAD918A13F8342E'),
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(x'86052C062AAF368D84247ED0F6346A70', x'BF5C35045C6037C79E11026ABB9A3A4E');
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SELECT COUNT(*) FROM t2 WHERE (f1,f2) IN
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((x'9B9B698BCCB939EE8F1EA56C1A2E5DAA', x'E2362DBAB5EA30B5804917A0A7D881E2'),
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(x'B78B2EEAD13635088D93EA3309E24802', x'BAE56AF2B1C2397D99D58E2A06761DDB'),
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(x'55FB3B14D6B83D39859E42533906350D', x'00F3458C47FA39DDBEAD918A13F8342E'),
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(x'1606014E7C4A312F83EDC9D91BBFCACA', x'33F6068E56FD3A1D8326517F0D81CB5A'));
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CREATE TABLE t3 (f1 int, f2 int) ENGINE=MYISAM;
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INSERT INTO t3 VALUES (2,5), (2,3), (1,2), (7,8), (1,1);
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SELECT * FROM t3 WHERE (f1,f2) IN ((2, 2), (1, 2), (3, 5), (1, 1));
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DROP TABLE t1,t2,t3;
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SET @@in_predicate_conversion_threshold= default;
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