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#
# Tests for range access and descending indexes
#
--source include/have_sequence.inc
--source include/have_innodb.inc
# The test uses optimizer trace:
--source include/not_embedded.inc
create table t1 (
a int,
key (a desc)
);
insert into t1 select seq from seq_1_to_1000;
set optimizer_trace=1;
explain select * from t1 force index(a) where a in (2, 4, 6);
#enable after fix MDEV-27871
--disable_view_protocol
select json_detailed(json_extract(trace, '$**.range_access_plan.ranges'))
from information_schema.optimizer_trace;
--enable_view_protocol
set optimizer_trace=default;
--echo # These should go in reverse order:
select * from t1 force index(a) where a in (2, 4, 6);
drop table t1;
--echo #
--echo # Multi-part key tests
--echo #
create table t1 (
a int not null,
b int not null,
key ab(a, b desc)
);
insert into t1 select A.seq, B.seq*10 from seq_1_to_10 A, seq_1_to_10 B;
#enable after fix MDEV-27871
--disable_view_protocol
set optimizer_trace=1;
explain select * from t1 force index(ab) where a>=8 and b>=50;
select json_detailed(json_extract(trace, '$**.range_access_plan.ranges'))
from information_schema.optimizer_trace;
explain select * from t1 force index(ab) where a>=8 and b<=50;
select json_detailed(json_extract(trace, '$**.range_access_plan.ranges'))
from information_schema.optimizer_trace;
--enable_view_protocol
select * from t1 force index(ab) where a>=8 and b<=50;
select * from t1 ignore index(ab) where a>=8 and b<=50 order by a, b desc;
#enable after fix MDEV-27871
--disable_view_protocol
explain
select * from t1 where a between 2 and 4 and b between 50 and 80;
select json_detailed(json_extract(trace, '$**.range_access_plan.ranges'))
from information_schema.optimizer_trace;
--enable_view_protocol
select * from t1 where a between 2 and 4 and b between 50 and 80;
drop table t1;
create table t2 (
a int not null,
b int not null,
key ab(a desc, b desc)
);
insert into t2 select A.seq, B.seq*10 from seq_1_to_10 A, seq_1_to_10 B;
#enable after fix MDEV-27871
--disable_view_protocol
explain
select * from t2 where a between 2 and 4;
select json_detailed(json_extract(trace, '$**.range_access_plan.ranges'))
from information_schema.optimizer_trace;
explain
select * from t2 where a between 2 and 4 and b between 50 and 80;
select json_detailed(json_extract(trace, '$**.range_access_plan.ranges'))
from information_schema.optimizer_trace;
--enable_view_protocol
drop table t2;
--echo #
--echo # Check that "Using index for group-by" is disabled (it's not supported, yet)
--echo #
CREATE TABLE t1 (p int NOT NULL, a int NOT NULL, PRIMARY KEY (p,a desc));
insert into t1 select 2,seq from seq_0_to_1000;
EXPLAIN select MIN(a) from t1 where p = 2 group by p;
#enable after fix MDEV-27871
--disable_view_protocol
select json_detailed(json_extract(trace, '$**.potential_group_range_indexes'))
from information_schema.optimizer_trace;
--enable_view_protocol
drop table t1;
set optimizer_trace=default;
--echo #
--echo # MDEV-27426: Wrong result upon query using index_merge with DESC key
--echo #
CREATE TABLE t1 (pk INT, a INT, b int, KEY(a), PRIMARY KEY(pk DESC))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,4,5),(2,9,6),(3,NULL,7),(4,NULL,8);
SELECT * FROM t1 WHERE pk > 10 OR a > 0;
DROP TABLE t1;
--echo #
--echo # MDEV-27529: Wrong result upon query using index_merge with DESC key (#2)
--echo #
create table t1 (
pk int,
a int,
b int,
primary key(pk desc),
key(a),
key(b)
) engine=innodb;
insert into t1 values (0, 111111, 255);
insert into t1 select seq+50000, NULL, seq+1000 from seq_1_to_260;
insert into t1 values (10000, NULL, 255);
insert into t1 select seq+20000, seq+20000, seq+20000 from seq_1_to_1500;
analyze table t1;
--echo # Must use ROR-intersect:
explain select * from t1 where b = 255 AND a IS NULL;
select * from t1 where b = 255 AND a IS NULL;
drop table t1;
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