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nexedi
MariaDB
Commits
92e47c39
Commit
92e47c39
authored
May 02, 2016
by
Sergei Golubchik
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test for group by pushdown with a view
parent
ea195d37
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+9
-0
storage/sequence/mysql-test/sequence/group_by.result
storage/sequence/mysql-test/sequence/group_by.result
+5
-0
storage/sequence/mysql-test/sequence/group_by.test
storage/sequence/mysql-test/sequence/group_by.test
+4
-0
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storage/sequence/mysql-test/sequence/group_by.result
View file @
92e47c39
...
@@ -66,6 +66,11 @@ id select_type table type possible_keys key key_len ref rows Extra
...
@@ -66,6 +66,11 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY seq_1_to_15_step_2 index NULL PRIMARY 8 NULL # Using index
1 PRIMARY seq_1_to_15_step_2 index NULL PRIMARY 8 NULL # Using index
1 PRIMARY <derived2> ALL NULL NULL NULL NULL # Using join buffer (flat, BNL join)
1 PRIMARY <derived2> ALL NULL NULL NULL NULL # Using join buffer (flat, BNL join)
2 DERIVED NULL NULL NULL NULL NULL NULL # Storage engine handles GROUP BY
2 DERIVED NULL NULL NULL NULL NULL NULL # Storage engine handles GROUP BY
create view v1 as select count(*) from seq_1_to_15_step_2;
select * from v1;
count(*)
8
drop view v1;
#
#
# The engine can't optimize the following queries
# The engine can't optimize the following queries
#
#
...
...
storage/sequence/mysql-test/sequence/group_by.test
View file @
92e47c39
...
@@ -30,6 +30,10 @@ select * from seq_1_to_15_step_2, (select count(*) from seq_1_to_15_step_2) as t
...
@@ -30,6 +30,10 @@ select * from seq_1_to_15_step_2, (select count(*) from seq_1_to_15_step_2) as t
--
replace_column
9
#
--
replace_column
9
#
explain
select
*
from
seq_1_to_15_step_2
,
(
select
count
(
*
)
from
seq_1_to_15_step_2
)
as
t1
;
explain
select
*
from
seq_1_to_15_step_2
,
(
select
count
(
*
)
from
seq_1_to_15_step_2
)
as
t1
;
create
view
v1
as
select
count
(
*
)
from
seq_1_to_15_step_2
;
select
*
from
v1
;
drop
view
v1
;
--
echo
#
--
echo
#
--
echo
# The engine can't optimize the following queries
--
echo
# The engine can't optimize the following queries
--
echo
#
--
echo
#
...
...
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