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nexedi
MariaDB
Commits
302bf7c4
Commit
302bf7c4
authored
Jul 02, 2015
by
Sergei Petrunia
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Tabular ANALYZE must get its data from execution tracker
parent
28a8ba08
Changes
3
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3 changed files
with
101 additions
and
3 deletions
+101
-3
mysql-test/r/analyze_stmt_orderby.result
mysql-test/r/analyze_stmt_orderby.result
+45
-0
mysql-test/t/analyze_stmt_orderby.test
mysql-test/t/analyze_stmt_orderby.test
+26
-1
sql/sql_explain.cc
sql/sql_explain.cc
+30
-2
No files found.
mysql-test/r/analyze_stmt_orderby.result
View file @
302bf7c4
...
...
@@ -531,4 +531,49 @@ EXPLAIN
}
drop table t5,t6,t7;
drop table t3;
#
# Tabular ANALYZE must get its data from execution tracker (and not from
# the query plan)
#
CREATE TABLE t2(
col1 int,
col2 int,
UNIQUE INDEX idx (col1, col2)) engine=myisam;
INSERT INTO t2(col1, col2) VALUES
(1,20),(2,19),(3,18),(4,17),(5,16),(6,15),(7,14),(8,13),(9,12),(10,11),
(11,10),(12,9),(13,8),(14,7),(15,6),(16,5),(17,4),(18,3),(19,2),(20,1);
flush status;
explain
select col1 f1, col2 f2, col1 f3 from t2 group by f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL idx 5 NULL 7 Using index for group-by
analyze
select col1 f1, col2 f2, col1 f3 from t2 group by f1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t2 range NULL idx 5 NULL 7 20.00 100.00 100.00 Using index for group-by
analyze format=json
select col1 f1, col2 f2, col1 f3 from t2 group by f1;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t2",
"access_type": "range",
"key": "idx",
"key_length": "5",
"used_key_parts": ["col1"],
"r_loops": 1,
"rows": 7,
"r_rows": 20,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100,
"using_index_for_group_by": true
}
}
}
drop table t2;
drop table t0,t1;
mysql-test/t/analyze_stmt_orderby.test
View file @
302bf7c4
...
...
@@ -147,6 +147,31 @@ select count(distinct t5.b) as sum from t5, t6
where t5.a=t6.a and t6.b > 0 and t5.a <= 5
group by t5.a order by sum limit 1;
drop table t5,t6,t7;
drop table t3;
--echo #
--echo # Tabular ANALYZE must get its data from execution tracker (and not from
--echo # the query plan)
--echo #
CREATE TABLE t2(
col1 int,
col2 int,
UNIQUE INDEX idx (col1, col2)) engine=myisam;
INSERT INTO t2(col1, col2) VALUES
(1,20),(2,19),(3,18),(4,17),(5,16),(6,15),(7,14),(8,13),(9,12),(10,11),
(11,10),(12,9),(13,8),(14,7),(15,6),(16,5),(17,4),(18,3),(19,2),(20,1);
flush status;
explain
select col1 f1, col2 f2, col1 f3 from t2 group by f1;
analyze
select col1 f1, col2 f2, col1 f3 from t2 group by f1;
--replace_regex /"
r_total_time_ms
": [0-9]*[.]?[0-9]*/"
r_total_time_ms
": "
REPLACED
"/ /"
r_buffer_size
": "
[
^
"]+"
/
"r_buffer_size"
:
"REPLACED"
/
analyze
format
=
json
select
col1
f1
,
col2
f2
,
col1
f3
from
t2
group
by
f1
;
drop
table
t2
;
drop
table
t0
,
t1
;
sql/sql_explain.cc
View file @
302bf7c4
...
...
@@ -726,8 +726,36 @@ int Explain_select::print_explain(Explain_query *query,
}
else
{
bool
using_tmp
=
using_temporary
;
bool
using_fs
=
using_filesort
;
bool
using_tmp
;
bool
using_fs
;
if
(
is_analyze
)
{
/*
Get the data about "Using temporary; Using filesort" from execution
tracking system.
*/
using_tmp
=
false
;
using_fs
=
false
;
Sort_and_group_tracker
::
Iterator
iter
(
&
ops_tracker
);
enum_qep_action
action
;
Filesort_tracker
*
dummy
;
while
((
action
=
iter
.
get_next
(
&
dummy
))
!=
EXPL_ACTION_EOF
)
{
if
(
action
==
EXPL_ACTION_FILESORT
)
using_fs
=
true
;
else
if
(
action
==
EXPL_ACTION_TEMPTABLE
)
using_tmp
=
true
;
}
}
else
{
/* Use imprecise "estimates" we got with the query plan */
using_tmp
=
using_temporary
;
using_fs
=
using_filesort
;
}
for
(
uint
i
=
0
;
i
<
n_join_tabs
;
i
++
)
{
join_tabs
[
i
]
->
print_explain
(
output
,
explain_flags
,
is_analyze
,
select_id
,
...
...
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