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Commit d1a1ad4c authored by Oleg Smirnov's avatar Oleg Smirnov Committed by Sergei Petrunia
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MDEV-27021 Add support of FORMAT=JSON for SHOW ANALYZE

parent e7fcd496
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mysql-test/main/show_analyze_json.result 0 → 100644
View file @ d1a1ad4c
drop table if exists t0, t1, t2, t3, t4;
drop view if exists v1;
SET @old_debug= @@session.debug;
set debug_sync='RESET';
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a int);
alter table t1 add b int, add c int, add filler char(32);
insert into t1 select A.a, 10*B.a, 100*C.a, 'foo filler' from t0 A, t0 B, t0 C;
alter table t1 add key(a), add key(b);
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status Table is already up to date
show analyze format=JSON for;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
show analyze format=json for 1001;
ERROR HY000: Unknown thread id: 1001
show analyze format=JSON for (select a from t0 limit 1);
ERROR HY000: You may only use constant expressions in this statement
connect con1, localhost, root,,;
connection con1;
SET @old_debug= @@session.debug;
connection default;
show analyze format = JSON for $thr2;
ERROR HY000: Target is not executing an operation with a query plan
show analyze format = json for $thr1;
ERROR HY000: Target is not executing an operation with a query plan
show analyze FORMAT=HTML for $thr1;
ERROR HY000: Unknown EXPLAIN/ANALYZE format name: 'HTML'
analyze FORMAT=XML for connection $thr1;
ERROR HY000: Unknown EXPLAIN/ANALYZE format name: 'XML'
connection con1;
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
select count(*) from t1 where c < 500;
connection default;
show analyze format=JSON for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"filtered": 59.375,
"r_filtered": 50,
"attached_condition": "t1.c < 500"
}
}
]
}
}
Warnings:
Note 1003 select count(*) from t1 where c < 500
connection con1;
count(*)
500
select max(c) from t1 where c < 10;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"filtered": 10.15625,
"r_filtered": 10,
"attached_condition": "t1.c < 10"
}
}
]
}
}
Warnings:
Note 1003 select max(c) from t1 where c < 10
connection con1;
max(c)
0
# We can catch ANALYZE too.
analyze select max(c) from t1 where a < 10;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t1",
"access_type": "ALL",
"possible_keys": ["a"],
"r_loops": 1,
"rows": 1000,
"r_rows": 1000,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 99.90000153,
"r_filtered": 100,
"attached_condition": "t1.a < 10"
}
}
]
}
}
Warnings:
Note 1003 analyze select max(c) from t1 where a < 10
connection con1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL a NULL NULL NULL 1000 1000.00 99.90 100.00 Using where
SET debug_dbug=@old_debug;
# UNION, select, first branch
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
connection default;
show analyze FORMAT= json for $thr2;
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "A",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 60,
"attached_condition": "a.a <= 5"
}
}
]
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"nested_loop": [
{
"table": {
"table_name": "B",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "b.a >= 9"
}
}
]
}
}
]
}
}
}
Warnings:
Note 1003 select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9
connection con1;
max(a)
5
10
# UNION, select, second branch
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
connection default;
show analyze format=JSON for $thr2;
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "A",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 60,
"attached_condition": "a.a <= 5"
}
}
]
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "B",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 10,
"attached_condition": "b.a >= 9"
}
}
]
}
}
]
}
}
}
Warnings:
Note 1003 select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9
connection con1;
max(a)
5
10
# UNION, analyze, first branch
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "A",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 60,
"attached_condition": "a.a <= 5"
}
}
]
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"nested_loop": [
{
"table": {
"table_name": "B",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "b.a >= 9"
}
}
]
}
}
]
}
}
}
Warnings:
Note 1003 analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9
connection con1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
2 UNION B ALL NULL NULL NULL NULL 10 10.00 100.00 10.00 Using where
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 7.00 NULL NULL
# UNION, analyze, second branch
set @show_explain_probe_select_id=2;
analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
connection default;
show analyze FORMAT=JSON for $thr2;
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "A",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 60,
"attached_condition": "a.a <= 5"
}
}
]
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "B",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 10,
"attached_condition": "b.a >= 9"
}
}
]
}
}
]
}
}
}
Warnings:
Note 1003 analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9
connection con1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
2 UNION B ALL NULL NULL NULL NULL 10 10.00 100.00 10.00 Using where
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 7.00 NULL NULL
SET debug_dbug=@old_debug;
# Uncorrelated subquery, select
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "A",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 20,
"attached_condition": "a.a < 2"
}
}
],
"subqueries": [
{
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "B",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 30,
"attached_condition": "b.a > 6"
}
}
]
}
}
]
}
}
Warnings:
Note 1003 select a, (select max(a) from t0 B where a>6) from t0 A where a<2
connection con1;
a (select max(a) from t0 B where a>6)
0 9
1 9
SET debug_dbug=@old_debug;
# Uncorrelated subquery, analyze
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
analyze select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "A",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 20,
"attached_condition": "a.a < 2"
}
}
],
"subqueries": [
{
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "B",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 30,
"attached_condition": "b.a > 6"
}
}
]
}
}
]
}
}
Warnings:
Note 1003 analyze select a, (select max(a) from t0 B where a>6) from t0 A where a<2
connection con1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
2 SUBQUERY B ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
SET debug_dbug=@old_debug;
# correlated subquery, select, before execution start
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"nested_loop": [
{
"table": {
"table_name": "a",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "a.a < 2"
}
}
],
"subqueries": [
{
"expression_cache": {
"state": "uninitialized",
"r_loops": 0,
"query_block": {
"select_id": 2,
"nested_loop": [
{
"table": {
"table_name": "b",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "b.a + a.a < 10"
}
}
]
}
}
}
]
}
}
Warnings:
Note 1003 select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2
connection con1;
a (select max(a) from t0 b where b.a+a.a<10)
0 9
1 8
SET debug_dbug=@old_debug;
# correlated subquery, select, after execution
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "a",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 20,
"attached_condition": "a.a < 2"
}
}
],
"subqueries": [
{
"expression_cache": {
"r_loops": 2,
"r_hit_ratio": 0,
"query_block": {
"select_id": 2,
"r_loops": 2,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "b",
"access_type": "ALL",
"r_loops": 2,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 95,
"attached_condition": "b.a + a.a < 10"
}
}
]
}
}
}
]
}
}
Warnings:
Note 1003 select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2
connection con1;
a (select max(a) from t0 b where b.a+a.a<10)
0 9
1 8
SET debug_dbug=@old_debug;
# correlated subquery, analyze
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
analyze select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "a",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 20,
"attached_condition": "a.a < 2"
}
}
],
"subqueries": [
{
"expression_cache": {
"r_loops": 2,
"r_hit_ratio": 0,
"query_block": {
"select_id": 2,
"r_loops": 2,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "b",
"access_type": "ALL",
"r_loops": 2,
"rows": 10,
"r_rows": 10,
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 95,
"attached_condition": "b.a + a.a < 10"
}
}
]
}
}
}
]
}
}
Warnings:
Note 1003 analyze select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2
connection con1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY a ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
2 DEPENDENT SUBQUERY b ALL NULL NULL NULL NULL 10 10.00 100.00 95.00 Using where
SET debug_dbug=@old_debug;
# Try to do SHOW ANALYZE for a query that runs a SET command:
#
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
set @foo= (select max(a) from t0 where sin(a) >0);
connection default;
show analyze format=json for $thr2;
ERROR HY000: Target is not executing an operation with a query plan
kill query $thr2;
connection con1;
ERROR 70100: Query execution was interrupted
SET debug_dbug=@old_debug;
#
# Attempt SHOW ANALYZE for an UPDATE
#
create table t2 as select a as a, a as dummy from t0 limit 2;
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
connection default;
show analyze FORMAT=JSON for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_total_time_ms": "REPLACED",
"table": {
"update": 1,
"table_name": "t2",
"access_type": "ALL",
"rows": 2,
"r_rows": 1,
"r_filtered": 0,
"attached_condition": "(subquery#2) > 3"
},
"subqueries": [
{
"query_block": {
"select_id": 2,
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
]
}
}
Warnings:
Note 1003 update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3
show analyze FORMAT=JSON for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_total_time_ms": "REPLACED",
"table": {
"update": 1,
"table_name": "t2",
"access_type": "ALL",
"rows": 2,
"r_rows": 2,
"r_filtered": 0,
"attached_condition": "(subquery#2) > 3"
},
"subqueries": [
{
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 30,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
]
}
}
Warnings:
Note 1003 update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3
connection con1;
drop table t2;
SET debug_dbug=@old_debug;
#
# Attempt SHOW ANALYZE for a DELETE
#
create table t2 as select a as a, a as dummy from t0 limit 2;
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
connection default;
show analyze FORMAT=JSON for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_total_time_ms": "REPLACED",
"table": {
"delete": 1,
"table_name": "t2",
"access_type": "ALL",
"rows": 2,
"r_rows": 1,
"r_filtered": 0,
"attached_condition": "(subquery#2) > 3"
},
"subqueries": [
{
"query_block": {
"select_id": 2,
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
]
}
}
Warnings:
Note 1003 delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3
show analyze FORMAT=JSON for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_total_time_ms": "REPLACED",
"table": {
"delete": 1,
"table_name": "t2",
"access_type": "ALL",
"rows": 2,
"r_rows": 2,
"r_filtered": 0,
"attached_condition": "(subquery#2) > 3"
},
"subqueries": [
{
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 30,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
]
}
}
Warnings:
Note 1003 delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3
connection con1;
drop table t2;
SET debug_dbug=@old_debug;
#
# Multiple SHOW ANALYZE calls for one select
#
create table t2 as select a as a, a as dummy from t0 limit 3;
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 1,
"filtered": 100,
"r_filtered": 100
}
}
],
"subqueries": [
{
"expression_cache": {
"r_loops": 1,
"r_hit_ratio": 0,
"query_block": {
"select_id": 2,
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 0,
"rows": 10,
"r_rows": null,
"filtered": 100,
"r_filtered": null,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
}
]
}
}
Warnings:
Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 2,
"filtered": 100,
"r_filtered": 100
}
}
],
"subqueries": [
{
"expression_cache": {
"r_loops": 2,
"r_hit_ratio": 0,
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 30,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
}
]
}
}
Warnings:
Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"filtered": 100,
"r_filtered": 100
}
}
],
"subqueries": [
{
"expression_cache": {
"r_loops": 3,
"r_hit_ratio": 0,
"query_block": {
"select_id": 2,
"r_loops": 2,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 2,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 25,
"attached_condition": "t2.a + t0.a < 3"
}
}
]
}
}
}
]
}
}
Warnings:
Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
connection con1;
a SUBQ
0 0
1 0
2 0
SET debug_dbug=@old_debug;
drop table t2;
#
# SHOW ANALYZE for SELECT ... ORDER BY with "Using filesort"
#
SET debug_dbug='+d,show_explain_probe_join_exec_end';
set @show_explain_probe_select_id=1;
select * from t0 order by a;
connection default;
show analyze format=JSON for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"nested_loop": [
{
"read_sorted_file": {
"r_rows": 10,
"filesort": {
"sort_key": "t0.a",
"r_loops": 1,
"r_used_priority_queue": false,
"r_output_rows": 10,
"r_buffer_size": "REPLACED",
"r_sort_mode": "sort_key,addon_fields",
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 100
}
}
}
}
]
}
}
Warnings:
Note 1003 select * from t0 order by a
connection con1;
a
0
1
2
3
4
5
6
7
8
9
SET debug_dbug=@old_debug;
#
# SHOW ANALYZE for SELECT ... with "Using temporary"
#
connection con1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
set @show_explain_probe_select_id=1;
select distinct a from t0;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"temporary_table": {
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 100
}
}
]
}
}
}
Warnings:
Note 1003 select distinct a from t0
connection con1;
a
0
1
2
3
4
5
6
7
8
9
SET debug_dbug=@old_debug;
#
# SHOW ANALYZE for SELECT ... with "Using temporary; Using filesort"
#
SET debug_dbug='+d,show_explain_probe_join_exec_end';
set @show_explain_probe_select_id=1;
select distinct a from t0;
connection default;
show analyze format=json for $thr2;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"temporary_table": {
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"r_loops": 1,
"rows": 10,
"r_rows": 10,
"filtered": 100,
"r_filtered": 100
}
}
]
}
}
}
Warnings:
Note 1003 select distinct a from t0
connection con1;
a
0
1
2
3
4
5
6
7
8
9
SET debug_dbug=@old_debug;
drop table t0,t1;
# End
connection default;
disconnect con1;
set debug_sync='RESET';
mysql-test/main/show_analyze_json.test 0 → 100644
View file @ d1a1ad4c
#
# Tests for SHOW ANALYZE FORMAT=JSON FOR functionality
#
--source include/have_debug.inc
--source include/have_debug_sync.inc
--source include/have_innodb.inc
# Using valgrind can cause 'reap' to fail. See comment below
--source include/not_valgrind.inc
--disable_warnings
drop table if exists t0, t1, t2, t3, t4;
drop view if exists v1;
--enable_warnings
SET @old_debug= @@session.debug;
#
# Testcases in this file do not work with embedded server. The reason for this
# is that we use the following commands for synchronization:
#
# set @show_explain_probe_select_id=1;
# SET debug_dbug='d,show_explain_probe_join_exec_start';
# send select count(*) from t1 where a < 100000;
#
# When ran with mysqltest_embedded, this translates into:
#
# Thread1> DBUG_PUSH("d,show_explain_probe_join_exec_start");
# Thread1> create another thread for doing "send ... reap"
# Thread2> mysql_parse("select count(*) from t1 where a < 100000");
#
# That is, "select count(*) ..." is ran in a thread for which DBUG_PUSH(...)
# has not been called. As a result, show_explain_probe_join_exec_start does not fire, and
# "select count(*) ..." does not wait till its SHOW ANALYZE command, and the
# test fails.
#
-- source include/not_embedded.inc
set debug_sync='RESET';
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a int);
alter table t1 add b int, add c int, add filler char(32);
insert into t1 select A.a, 10*B.a, 100*C.a, 'foo filler' from t0 A, t0 B, t0 C;
alter table t1 add key(a), add key(b);
analyze table t1;
#
# Try to call SHOW ANALYZE with a missing thread ID
#
--error ER_PARSE_ERROR
show analyze format=JSON for;
#
# Try SHOW ANALYZE for a non-existent thread
#
--error ER_NO_SUCH_THREAD
show analyze format=json for 1001;
--error ER_SET_CONSTANTS_ONLY
show analyze format=JSON for (select a from t0 limit 1);
#
# Setup two threads and their ids
#
let $thr1=`select connection_id()`;
connect (con1, localhost, root,,);
connection con1;
let $thr2=`select connection_id()`;
SET @old_debug= @@session.debug;
connection default;
# SHOW ANALYZE FOR <idle thread>
--error ER_TARGET_NOT_EXPLAINABLE
evalp show analyze format = JSON for $thr2;
# SHOW ANALYZE FOR <ourselves>
--error ER_TARGET_NOT_EXPLAINABLE
evalp show analyze format = json for $thr1;
# Not supported format of output
--error ER_UNKNOWN_EXPLAIN_FORMAT
evalp show analyze FORMAT=HTML for $thr1;
--error ER_UNKNOWN_EXPLAIN_FORMAT
evalp analyze FORMAT=XML for connection $thr1;
let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;
#
# Test SHOW ANALYZE for simple queries
#
connection con1;
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send select count(*) from t1 where c < 500;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=JSON for $thr2;
connection con1;
reap;
send select max(c) from t1 where c < 10;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
--echo # We can catch ANALYZE too.
send analyze select max(c) from t1 where a < 10;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # UNION, select, first branch
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze FORMAT= json for $thr2;
connection con1;
reap;
--echo # UNION, select, second branch
set @show_explain_probe_select_id=2; # <--- Second branch
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=JSON for $thr2;
connection con1;
reap;
--echo # UNION, analyze, first branch
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
--echo # UNION, analyze, second branch
set @show_explain_probe_select_id=2;
send analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze FORMAT=JSON for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # Uncorrelated subquery, select
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # Uncorrelated subquery, analyze
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send analyze select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # correlated subquery, select, before execution start
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
send select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # correlated subquery, select, after execution
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # correlated subquery, analyze
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
send analyze select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo # Try to do SHOW ANALYZE for a query that runs a SET command:
--echo #
set @show_explain_probe_select_id=2; # <---
SET debug_dbug='+d,show_explain_probe_join_exec_start';
send set @foo= (select max(a) from t0 where sin(a) >0);
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
--error ER_TARGET_NOT_EXPLAINABLE
evalp show analyze format=json for $thr2;
evalp kill query $thr2;
connection con1;
--error ER_QUERY_INTERRUPTED
reap;
SET debug_dbug=@old_debug;
--echo #
--echo # Attempt SHOW ANALYZE for an UPDATE
--echo #
create table t2 as select a as a, a as dummy from t0 limit 2;
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
send update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze FORMAT=JSON for $thr2;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze FORMAT=JSON for $thr2;
connection con1;
reap;
drop table t2;
SET debug_dbug=@old_debug;
--echo #
--echo # Attempt SHOW ANALYZE for a DELETE
--echo #
create table t2 as select a as a, a as dummy from t0 limit 2;
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
send delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze FORMAT=JSON for $thr2;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze FORMAT=JSON for $thr2;
connection con1;
reap;
drop table t2;
SET debug_dbug=@old_debug;
--echo #
--echo # Multiple SHOW ANALYZE calls for one select
--echo #
create table t2 as select a as a, a as dummy from t0 limit 3;
set @show_explain_probe_select_id=2;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
send select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
drop table t2;
--echo #
--echo # SHOW ANALYZE for SELECT ... ORDER BY with "Using filesort"
--echo #
SET debug_dbug='+d,show_explain_probe_join_exec_end';
set @show_explain_probe_select_id=1;
send select * from t0 order by a;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=JSON for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo #
--echo # SHOW ANALYZE for SELECT ... with "Using temporary"
--echo #
connection con1;
SET debug_dbug='+d,show_explain_probe_join_exec_end';
set @show_explain_probe_select_id=1;
send select distinct a from t0;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
--echo #
--echo # SHOW ANALYZE for SELECT ... with "Using temporary; Using filesort"
--echo #
SET debug_dbug='+d,show_explain_probe_join_exec_end';
set @show_explain_probe_select_id=1;
send select distinct a from t0;
connection default;
--source include/wait_condition.inc
--source include/analyze-format.inc
evalp show analyze format=json for $thr2;
connection con1;
reap;
SET debug_dbug=@old_debug;
drop table t0,t1;
--echo # End
connection default;
disconnect con1;
set debug_sync='RESET';
\ No newline at end of file
mysql-test/main/show_explain_json.result
View file @ d1a1ad4c
......@@ -26,17 +26,17 @@ connection con1;
SET @old_debug= @@session.debug;
connection default;
show explain format=JSON for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
ERROR HY000: Target is not executing an operation with a query plan
explain format=json for connection $thr2;
ERROR HY000: Target is not running an EXPLAINable command
ERROR HY000: Target is not executing an operation with a query plan
show explain format=json for $thr1;
ERROR HY000: Target is not running an EXPLAINable command
ERROR HY000: Target is not executing an operation with a query plan
explain FORMAT=JSON for connection $thr1;
ERROR HY000: Target is not running an EXPLAINable command
ERROR HY000: Target is not executing an operation with a query plan
show explain FORMAT=HTML for $thr1;
ERROR HY000: Unknown EXPLAIN format name: 'HTML'
ERROR HY000: Unknown EXPLAIN/ANALYZE format name: 'HTML'
explain FORMAT=XML for connection $thr1;
ERROR HY000: Unknown EXPLAIN format name: 'XML'
ERROR HY000: Unknown EXPLAIN/ANALYZE format name: 'XML'
connection con1;
set @show_explain_probe_select_id=1;
SET debug_dbug='+d,show_explain_probe_join_exec_start';
......@@ -523,7 +523,7 @@ SET debug_dbug='+d,show_explain_probe_join_exec_start';
set @foo= (select max(a) from t0 where sin(a) >0);
connection default;
show explain format=JSON for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
ERROR HY000: Target is not executing an operation with a query plan
kill query $thr2;
connection con1;
ERROR 70100: Query execution was interrupted
......
sql/handler.h
View file @ d1a1ad4c
......@@ -1025,7 +1025,8 @@ enum enum_schema_tables
SCH_EVENTS,
SCH_EXPLAIN_TABULAR,
SCH_EXPLAIN_JSON,
SCH_ANALYZE,
SCH_ANALYZE_TABULAR,
SCH_ANALYZE_JSON,
SCH_FILES,
SCH_GLOBAL_STATUS,
SCH_GLOBAL_VARIABLES,
......
sql/sql_show.cc
View file @ d1a1ad4c
......@@ -3242,13 +3242,14 @@ int fill_show_explain_tabular(THD *thd, TABLE_LIST *table, COND *cond)
int fill_show_explain_json(THD *thd, TABLE_LIST *table, COND *cond)
{
return fill_show_explain_or_analyze(
thd, table, cond, TRUE /* json_format */, TRUE /* is_analyze */);
thd, table, cond, TRUE /* json_format */, FALSE /* is_analyze */);
}
int fill_show_analyze_tabular(THD * thd, TABLE_LIST * table, COND * cond)
{
return fill_show_explain_or_analyze(
thd, table, cond, FALSE /* json_format */, TRUE /* is_analyze */);
thd, table, cond, FALSE /* json_format */, TRUE /* is_analyze */);
}
......@@ -9676,7 +9677,7 @@ ST_FIELD_INFO show_explain_json_fields_info[]=
};
ST_FIELD_INFO show_analyze_fields_info[]=
ST_FIELD_INFO show_analyze_tabular_fields_info[]=
{
Column("id", SLonglong(3), NULLABLE, "id"),
Column("select_type", Varchar(19), NOT_NULL, "select_type"),
......@@ -9699,6 +9700,11 @@ ST_FIELD_INFO show_analyze_fields_info[]=
};
ST_FIELD_INFO show_analyze_json_fields_info[]= {
Column("EXPLAIN", Longtext(MAX_FIELD_VARCHARLENGTH), NOT_NULL, "ANALYZE"),
CEnd()};
ST_FIELD_INFO check_constraints_fields_info[]=
{
Column("CONSTRAINT_CATALOG", Catalog(), NOT_NULL, OPEN_FULL_TABLE),
......@@ -9759,12 +9765,18 @@ ST_SCHEMA_TABLE schema_tables[]=
{"EVENTS", Show::events_fields_info, 0,
0, make_old_format, 0, -1, -1, 0, 0},
#endif
{"EXPLAIN", Show::show_explain_tabular_fields_info, 0, fill_show_explain_tabular,
make_old_format, 0, -1, -1, TRUE /*hidden*/ , 0},
{"EXPLAIN_JSON", Show::show_explain_json_fields_info, 0, fill_show_explain_json,
make_old_format, 0, -1, -1, TRUE /*hidden*/, 0},
{"ANALYZE", Show::show_analyze_fields_info, 0, fill_show_analyze_tabular,
make_old_format, 0, -1, -1, TRUE /*hidden*/, 0},
{"EXPLAIN", Show::show_explain_tabular_fields_info, 0,
fill_show_explain_tabular, make_old_format, 0, -1, -1,
TRUE /*hidden*/ , 0},
{"EXPLAIN_JSON", Show::show_explain_json_fields_info, 0,
fill_show_explain_json, make_old_format, 0, -1, -1,
TRUE /*hidden*/ , 0},
{"ANALYZE", Show::show_analyze_tabular_fields_info, 0,
fill_show_analyze_tabular, make_old_format, 0, -1, -1,
TRUE /*hidden*/, 0},
{"ANALYZE_JSON", Show::show_analyze_json_fields_info, 0,
fill_show_analyze_json, make_old_format, 0, -1, -1,
TRUE /*hidden*/, 0},
{"FILES", Show::files_fields_info, 0,
hton_fill_schema_table, 0, 0, -1, -1, 0, 0},
{"GLOBAL_STATUS", Show::variables_fields_info, 0,
......
sql/sql_yacc.yy
View file @ d1a1ad4c
......@@ -13944,16 +13944,17 @@ show_param:
{
Lex->sql_command= SQLCOM_SHOW_EXPLAIN;
if (unlikely(prepare_schema_table(thd, Lex, 0,
Lex->explain_json ? SCH_EXPLAIN_JSON : SCH_EXPLAIN_TABULAR)))
Lex->explain_json ? SCH_EXPLAIN_JSON : SCH_EXPLAIN_TABULAR)))
MYSQL_YYABORT;
add_value_to_list(thd, $4);
}
| ANALYZE_SYM FOR_SYM expr
| ANALYZE_SYM opt_format_json FOR_SYM expr
{
Lex->sql_command= SQLCOM_SHOW_ANALYZE;
if (unlikely(prepare_schema_table(thd, Lex, 0, SCH_ANALYZE)))
if (unlikely(prepare_schema_table(thd, Lex, 0,
Lex->explain_json ? SCH_ANALYZE_JSON : SCH_ANALYZE_TABULAR)))
MYSQL_YYABORT;
add_value_to_list(thd, $3);
add_value_to_list(thd, $4);
}
| IDENT_sys remember_tok_start wild_and_where
{
......@@ -14107,8 +14108,8 @@ opt_format_json:
else if (lex_string_eq(&$3, STRING_WITH_LEN("TRADITIONAL")))
DBUG_ASSERT(Lex->explain_json==false);
else
my_yyabort_error((ER_UNKNOWN_EXPLAIN_FORMAT, MYF(0), "EXPLAIN",
$3.str));
my_yyabort_error((ER_UNKNOWN_EXPLAIN_FORMAT, MYF(0),
"EXPLAIN/ANALYZE", $3.str));
}
;
......
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