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MDEV-30806: ANALYZE FORMAT=JSON: better support for BNL and BNL-H joins

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In block-nl-join, add:

- r_loops - this shows how many incoming record combinations this
  query plan node had.

- r_effective_rows - this shows the average number of matching rows
  that this table had for each incoming record combination. This is
  comparable with r_rows in non-blocked access methods.
  For BNL-joins, it is always equal to
   $.table.r_rows * $.table.r_filtered
  For BNL-H joins the value cannot be computed from other values

Reviewed by: Monty <monty@mariadb.org>
This commit is contained in:
Sergei Petrunia 2023-03-07 19:49:57 +03:00
commit dc1d6213f9
14 changed files with 279 additions and 30 deletions
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140
mysql-test/main/analyze_format_json.result
View file

@ -151,7 +151,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "1Kb",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 20,
"r_filtered": 100,
"r_effective_rows": 60
}
}
}
@ -192,7 +194,9 @@ ANALYZE
"buffer_size": "1Kb",
"join_type": "BNL",
"attached_condition": "tbl1.c > tbl2.c",
"r_filtered": 15.83333333
"r_loops": 20,
"r_filtered": 15.83333333,
"r_effective_rows": 60
}
}
}
@ -652,7 +656,9 @@ ANALYZE
"buffer_size": "65",
"join_type": "BNL",
"attached_condition": "<in_optimizer>(t2.b,t2.b in (subquery#2))",
"r_filtered": null
"r_loops": 2,
"r_filtered": null,
"r_effective_rows": 0
},
"subqueries": [
{
@ -742,7 +748,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "1",
"join_type": "BNL",
"r_filtered": null
"r_loops": 2,
"r_filtered": null,
"r_effective_rows": 0
},
"subqueries": [
{
@ -774,7 +782,9 @@ ANALYZE
"buffer_size": "65",
"join_type": "BNL",
"attached_condition": "t2.f2 = t3.f3",
"r_filtered": null
"r_loops": 0,
"r_filtered": null,
"r_effective_rows": null
}
}
}
@ -849,3 +859,123 @@ ANALYZE
}
}
drop table t0,t1,t2;
#
# MDEV-30806: ANALYZE FORMAT=JSON: better support for BNL and BNL-H joins
#
create table t10 (
a int,
b int
);
insert into t10 select seq, seq/3 from seq_0_to_999;
create table t11 (
a int,
b int
);
insert into t11 select seq, seq/5 from seq_0_to_999;
analyze table t10,t11 persistent for all;
Table Op Msg_type Msg_text
test.t10 analyze status Engine-independent statistics collected
test.t10 analyze status OK
test.t11 analyze status Engine-independent statistics collected
test.t11 analyze status OK
analyze format=json
select * from t10, t11
where
t10.a < 700 and
t11.a < 100
and t10.b=t11.b;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t11",
"access_type": "ALL",
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 10.15625,
"r_filtered": 10,
"attached_condition": "t11.a < 100"
},
"block-nl-join": {
"table": {
"table_name": "t10",
"access_type": "ALL",
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 70.3125,
"r_filtered": 70,
"attached_condition": "t10.a < 700"
},
"buffer_type": "flat",
"buffer_size": "1Kb",
"join_type": "BNL",
"attached_condition": "t10.b = t11.b",
"r_loops": 100,
"r_filtered": 0.424285714,
"r_effective_rows": 700
}
}
}
set @tmp=@@join_cache_level, join_cache_level=6;
analyze format=json
select * from t10, t11
where
t10.a < 700 and
t11.a < 100
and t10.b=t11.b;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t11",
"access_type": "ALL",
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 10.15625,
"r_filtered": 10,
"attached_condition": "t11.a < 100 and t11.b is not null"
},
"block-nl-join": {
"table": {
"table_name": "t10",
"access_type": "hash_ALL",
"key": "#hash#$hj",
"key_length": "5",
"used_key_parts": ["b"],
"ref": ["test.t11.b"],
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 70.3125,
"r_filtered": 70,
"attached_condition": "t10.a < 700"
},
"buffer_type": "flat",
"buffer_size": "3Kb",
"join_type": "BNLH",
"attached_condition": "t10.b = t11.b",
"r_loops": 100,
"r_filtered": 100,
"r_effective_rows": 2.97
}
}
}
set join_cache_level=@tmp;
drop table t10, t11;

42
mysql-test/main/analyze_format_json.test
View file

@ -226,3 +226,45 @@ create table t2 as select * from t1;
--source include/analyze-format.inc
analyze format=json select a, (select t2.b from t2 where t2.a<t1.a order by t2.c limit 1) from t1 where t1.a<0;
drop table t0,t1,t2;
--echo #
--echo # MDEV-30806: ANALYZE FORMAT=JSON: better support for BNL and BNL-H joins
--echo #
--source include/have_sequence.inc
create table t10 (
a int,
b int
);
insert into t10 select seq, seq/3 from seq_0_to_999;
create table t11 (
a int,
b int
);
insert into t11 select seq, seq/5 from seq_0_to_999;
analyze table t10,t11 persistent for all;
--source include/analyze-format.inc
analyze format=json
select * from t10, t11
where
t10.a < 700 and
t11.a < 100
and t10.b=t11.b;
set @tmp=@@join_cache_level, join_cache_level=6;
--source include/analyze-format.inc
analyze format=json
select * from t10, t11
where
t10.a < 700 and
t11.a < 100
and t10.b=t11.b;
set join_cache_level=@tmp;
drop table t10, t11;

8
mysql-test/main/analyze_stmt_orderby.result
View file

@ -441,7 +441,9 @@ ANALYZE
"buffer_size": "65",
"join_type": "BNL",
"attached_condition": "t3.a = t0.a",
"r_filtered": 10
"r_loops": 10,
"r_filtered": 10,
"r_effective_rows": 10
}
}
}
@ -516,7 +518,9 @@ ANALYZE
"buffer_size": "119",
"join_type": "BNL",
"attached_condition": "t5.a = t6.a",
"r_filtered": 21.42857143
"r_loops": 4,
"r_filtered": 21.42857143,
"r_effective_rows": 7
}
}
}

16
mysql-test/main/except.result
View file

@ -334,7 +334,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 2,
"r_filtered": 100,
"r_effective_rows": 2
}
}
},
@ -370,7 +372,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 2,
"r_filtered": 100,
"r_effective_rows": 2
}
}
}
@ -435,7 +439,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 2,
"r_filtered": 100,
"r_effective_rows": 2
}
}
},
@ -471,7 +477,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 2,
"r_filtered": 100,
"r_effective_rows": 2
}
}
}

16
mysql-test/main/except_all.result
View file

@ -453,7 +453,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 3,
"r_filtered": 100,
"r_effective_rows": 3
}
}
},
@ -489,7 +491,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 2,
"r_filtered": 100,
"r_effective_rows": 3
}
}
}
@ -553,7 +557,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 3,
"r_filtered": 100,
"r_effective_rows": 3
}
}
},
@ -589,7 +595,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "119",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 2,
"r_filtered": 100,
"r_effective_rows": 3
}
}
}

4
mysql-test/main/explain_json.result
View file

@ -1544,7 +1544,9 @@ ANALYZE
"buffer_size": "400",
"join_type": "BKA",
"mrr_type": "Rowid-ordered scan",
"r_filtered": 100
"r_loops": 10,
"r_filtered": 100,
"r_effective_rows": 1
}
}
}

8
mysql-test/main/intersect.result
View file

@ -395,7 +395,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "256Kb",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 3,
"r_filtered": 100,
"r_effective_rows": 3
}
}
}
@ -478,7 +480,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "256Kb",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 3,
"r_filtered": 100,
"r_effective_rows": 3
}
}
}

8
mysql-test/main/intersect_all.result
View file

@ -426,7 +426,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "65",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 5,
"r_filtered": 100,
"r_effective_rows": 7
}
}
}
@ -509,7 +511,9 @@ ANALYZE
"buffer_type": "flat",
"buffer_size": "65",
"join_type": "BNL",
"r_filtered": 100
"r_loops": 5,
"r_filtered": 100,
"r_effective_rows": 7
}
}
}

8
mysql-test/main/rowid_filter_innodb.result
View file

@ -3685,7 +3685,9 @@ ANALYZE
"join_type": "BKA",
"mrr_type": "Rowid-ordered scan",
"attached_condition": "a.atp = 1",
"r_filtered": 100
"r_loops": 3,
"r_filtered": 100,
"r_effective_rows": 1
},
"block-nl-join": {
"table": {
@ -3709,7 +3711,9 @@ ANALYZE
"join_type": "BKA",
"mrr_type": "Rowid-ordered scan",
"attached_condition": "fi.fh in (6311439873746261694,-397087483897438286,8518228073041491534,-5420422472375069774)",
"r_filtered": 40
"r_loops": 3,
"r_filtered": 40,
"r_effective_rows": 26.66666667
}
}
}