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Commit 2dbe472e authored by Sergei Petrunia's avatar Sergei Petrunia
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Optimizer trace: print cost and #rows of the join prefix 

The names rows_for_plan and cost_for_plan follow MySQL
Also added post-join-operation selectivity cost
parent 95cdc1ca
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Showing with 502 additions and 37 deletions
mysql-test/main/opt_trace.result
View file @ 2dbe472e
......@@ -136,7 +136,9 @@ select * from v1 {
"chosen": true
}
]
}
},
"rows_for_plan": 1,
"cost_for_plan": 2.4044
}
]
},
......@@ -269,7 +271,9 @@ select * from (select * from t1 where t1.a=1)q {
"chosen": true
}
]
}
},
"rows_for_plan": 1,
"cost_for_plan": 2.4044
}
]
},
......@@ -408,7 +412,9 @@ select * from v2 {
"use_tmp_table": true
}
]
}
},
"rows_for_plan": 1,
"cost_for_plan": 2.4044
}
]
},
......@@ -462,7 +468,9 @@ select * from v2 {
"chosen": true
}
]
}
},
"rows_for_plan": 2,
"cost_for_plan": 2.4
}
]
},
......@@ -589,7 +597,9 @@ explain select * from v2 {
"chosen": true
}
]
}
},
"rows_for_plan": 10,
"cost_for_plan": 4.022
}
]
},
......@@ -696,7 +706,9 @@ explain select * from v1 {
"use_tmp_table": true
}
]
}
},
"rows_for_plan": 10,
"cost_for_plan": 4.022
}
]
},
......@@ -750,7 +762,9 @@ explain select * from v1 {
"chosen": true
}
]
}
},
"rows_for_plan": 10,
"cost_for_plan": 12
}
]
},
......@@ -910,6 +924,8 @@ explain select * from t1,t2 where t1.a=t2.b+2 and t2.a= t1.b {
}
]
},
"rows_for_plan": 100,
"cost_for_plan": 22.317,
"rest_of_plan": [
{
"plan_prefix": ["t1"],
......@@ -932,7 +948,9 @@ explain select * from t1,t2 where t1.a=t2.b+2 and t2.a= t1.b {
"chosen": false
}
]
}
},
"rows_for_plan": 100,
"cost_for_plan": 242.32
}
]
},
......@@ -949,6 +967,8 @@ explain select * from t1,t2 where t1.a=t2.b+2 and t2.a= t1.b {
}
]
},
"rows_for_plan": 100,
"cost_for_plan": 22.317,
"rest_of_plan": [
{
"plan_prefix": ["t2"],
......@@ -972,6 +992,8 @@ explain select * from t1,t2 where t1.a=t2.b+2 and t2.a= t1.b {
}
]
},
"rows_for_plan": 100,
"cost_for_plan": 242.32,
"pruned_by_cost": true
}
]
......@@ -1130,7 +1152,9 @@ EXPLAIN SELECT DISTINCT a FROM t1 {
"chosen": true
}
]
}
},
"rows_for_plan": 5,
"cost_for_plan": 7.75
}
]
},
......@@ -1308,7 +1332,9 @@ EXPLAIN SELECT MIN(d) FROM t1 where b=2 and c=3 group by a {
"use_tmp_table": true
}
]
}
},
"rows_for_plan": 0.5849,
"cost_for_plan": 3.4291
}
]
},
......@@ -1497,7 +1523,9 @@ EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id {
"use_tmp_table": true
}
]
}
},
"rows_for_plan": 16,
"cost_for_plan": 5.2313
}
]
},
......@@ -1675,7 +1703,9 @@ EXPLAIN SELECT * FROM t1 WHERE a = 20010104e0 GROUP BY id {
"use_tmp_table": true
}
]
}
},
"rows_for_plan": 16,
"cost_for_plan": 5.2313
}
]
},
......@@ -1943,7 +1973,9 @@ explain select * from t1 where a=1 and b=2 order by c limit 1 {
"cause": "cost"
}
]
}
},
"rows_for_plan": 21,
"cost_for_plan": 26.2
}
]
},
......@@ -2171,7 +2203,9 @@ select t1.a from t1 left join t2 on t1.a=t2.a {
"chosen": true
}
]
}
},
"rows_for_plan": 4,
"cost_for_plan": 2.8068
}
]
},
......@@ -2286,6 +2320,8 @@ explain select * from t1 left join t2 on t2.a=t1.a {
}
]
},
"rows_for_plan": 4,
"cost_for_plan": 2.8068,
"rest_of_plan": [
{
"plan_prefix": ["t1"],
......@@ -2306,7 +2342,9 @@ explain select * from t1 left join t2 on t2.a=t1.a {
"chosen": false
}
]
}
},
"rows_for_plan": 4,
"cost_for_plan": 7.6068
}
]
}
......@@ -2454,7 +2492,9 @@ explain select t1.a from t1 left join (t2 join t3 on t2.b=t3.b) on t2.a=t1.a and
"chosen": true
}
]
}
},
"rows_for_plan": 4,
"cost_for_plan": 2.8068
}
]
},
......@@ -2639,7 +2679,9 @@ explain extended select * from t1 where a in (select pk from t10) {
"chosen": true
}
]
}
},
"rows_for_plan": 10,
"cost_for_plan": 4.022
}
]
}
......@@ -2661,6 +2703,8 @@ explain extended select * from t1 where a in (select pk from t10) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6066,
"rest_of_plan": [
{
"plan_prefix": ["t1"],
......@@ -2674,7 +2718,9 @@ explain extended select * from t1 where a in (select pk from t10) {
"chosen": true
}
]
}
},
"rows_for_plan": 30,
"cost_for_plan": 10.629
}
]
},
......@@ -2691,6 +2737,8 @@ explain extended select * from t1 where a in (select pk from t10) {
}
]
},
"rows_for_plan": 10,
"cost_for_plan": 4.022,
"pruned_by_heuristic": true
}
]
......@@ -3031,7 +3079,9 @@ explain select * from t1 where pk = 2 and a=5 and b=1 {
"cause": "cost"
}
]
}
},
"rows_for_plan": 1,
"cost_for_plan": 1.2043
}
]
},
......@@ -3143,7 +3193,9 @@ select f1(a) from t1 {
"chosen": true
}
]
}
},
"rows_for_plan": 4,
"cost_for_plan": 2.8068
}
]
},
......@@ -3229,7 +3281,9 @@ select f2(a) from t1 {
"chosen": true
}
]
}
},
"rows_for_plan": 4,
"cost_for_plan": 2.8068
}
]
},
......@@ -3273,7 +3327,7 @@ a
2
select length(trace) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
length(trace)
1754
1831
set optimizer_trace_max_mem_size=100;
select * from t1;
a
......@@ -3287,7 +3341,7 @@ select * from t1 {
"join_preparation": {
"select_id": 1,
"steps": [
1654 0
1731 0
set optimizer_trace_max_mem_size=0;
select * from t1;
a
......@@ -3295,7 +3349,7 @@ a
2
select * from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
QUERY TRACE MISSING_BYTES_BEYOND_MAX_MEM_SIZE INSUFFICIENT_PRIVILEGES
select * from t1 1754 0
select * from t1 1831 0
drop table t1;
set optimizer_trace='enabled=off';
set @@optimizer_trace_max_mem_size= @save_optimizer_trace_max_mem_size;
......@@ -3600,6 +3654,8 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.007,
"rest_of_plan": [
{
"plan_prefix": ["t0"],
......@@ -3621,7 +3677,9 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 {
"cause": "cost"
}
]
}
},
"rows_for_plan": 3,
"cost_for_plan": 5.614
}
]
},
......@@ -3638,6 +3696,8 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.007,
"rest_of_plan": [
{
"plan_prefix": ["t1"],
......@@ -3660,6 +3720,8 @@ explain delete t0,t1 from t0, t1 where t0.a=t1.a and t1.a<3 {
}
]
},
"rows_for_plan": 6,
"cost_for_plan": 6.2211,
"pruned_by_cost": true
}
]
......@@ -3787,7 +3849,9 @@ explain select * from (select rand() from t1)q {
"chosen": true
}
]
}
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051
}
]
},
......@@ -3841,7 +3905,9 @@ explain select * from (select rand() from t1)q {
"chosen": true
}
]
}
},
"rows_for_plan": 3,
"cost_for_plan": 3.6
}
]
},
......@@ -4033,6 +4099,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"rest_of_plan": [
{
"plan_prefix": ["t_inner_1"],
......@@ -4046,7 +4114,9 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
"chosen": true
}
]
}
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103
}
]
},
......@@ -4063,6 +4133,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
}
]
......@@ -4085,6 +4157,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"rest_of_plan": [
{
"plan_prefix": ["t1"],
......@@ -4099,6 +4173,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103,
"rest_of_plan": [
{
"plan_prefix": ["t1", "t_inner_1"],
......@@ -4112,7 +4188,9 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
"chosen": true
}
]
}
},
"rows_for_plan": 27,
"cost_for_plan": 13.815
}
]
},
......@@ -4129,6 +4207,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103,
"pruned_by_heuristic": true
}
]
......@@ -4146,6 +4226,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
},
{
......@@ -4161,6 +4243,8 @@ explain select * from t1 where a in (select t_inner_1.a from t1 t_inner_1, t1 t_
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
}
]
......@@ -4447,6 +4531,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1"],
......@@ -4461,6 +4547,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1"],
......@@ -4475,6 +4563,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 24.626,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1", "t_inner_2"],
......@@ -4489,6 +4579,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 34.174,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4508,6 +4600,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 52.379,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4527,7 +4621,9 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
"chosen": true
}
]
}
},
"rows_for_plan": 729,
"cost_for_plan": 200.19
}
]
},
......@@ -4549,6 +4645,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 84.79,
"pruned_by_heuristic": true
}
]
......@@ -4566,6 +4664,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 30.564,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4585,6 +4685,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 48.779,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4605,6 +4707,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 729,
"cost_for_plan": 196.59,
"pruned_by_cost": true
}
]
......@@ -4627,6 +4731,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 48.779,
"pruned_by_heuristic": true
}
]
......@@ -4644,6 +4750,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 34.174,
"pruned_by_heuristic": true
}
]
......@@ -4661,6 +4769,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 24.626,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1", "t_outer_2"],
......@@ -4675,6 +4785,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 729,
"cost_for_plan": 172.44,
"pruned_by_cost": true
},
{
......@@ -4690,6 +4802,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 75.231,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4709,6 +4823,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 514.65,
"pruned_by_cost": true
},
{
......@@ -4729,6 +4845,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 514.65,
"pruned_by_cost": true
}
]
......@@ -4746,6 +4864,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 729,
"cost_for_plan": 172.44,
"pruned_by_heuristic": true
}
]
......@@ -4763,6 +4883,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 13.815,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1", "t_inner_4"],
......@@ -4777,6 +4899,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 64.431,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4796,6 +4920,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 503.85,
"pruned_by_cost": true
},
{
......@@ -4816,6 +4942,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 503.85,
"pruned_by_cost": true
}
]
......@@ -4833,6 +4961,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 64.431,
"pruned_by_heuristic": true
},
{
......@@ -4848,6 +4978,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 64.431,
"pruned_by_heuristic": true
}
]
......@@ -4865,6 +4997,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 24.626,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1", "t_inner_3"],
......@@ -4879,6 +5013,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 729,
"cost_for_plan": 172.44,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4898,6 +5034,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 611.85,
"pruned_by_cost": true
},
{
......@@ -4918,6 +5056,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 6561,
"cost_for_plan": 1486.7,
"pruned_by_cost": true
}
]
......@@ -4935,6 +5075,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 75.231,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -4954,6 +5096,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 514.65,
"pruned_by_cost": true
},
{
......@@ -4974,6 +5118,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 2187,
"cost_for_plan": 514.65,
"pruned_by_cost": true
}
]
......@@ -4991,6 +5137,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 729,
"cost_for_plan": 172.44,
"pruned_by_heuristic": true
}
]
......@@ -5010,6 +5158,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 10.021,
"pruned_by_heuristic": true
},
{
......@@ -5025,6 +5175,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 10.021,
"pruned_by_heuristic": true
},
{
......@@ -5040,6 +5192,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103,
"pruned_by_heuristic": true
},
{
......@@ -5055,6 +5209,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 10.021,
"pruned_by_heuristic": true
}
]
......@@ -5072,6 +5228,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
},
{
......@@ -5087,6 +5245,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
},
{
......@@ -5102,6 +5262,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
},
{
......@@ -5117,6 +5279,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
},
{
......@@ -5132,6 +5296,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
}
]
......@@ -5473,6 +5639,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"rest_of_plan": [
{
"plan_prefix": ["t_inner_1"],
......@@ -5486,7 +5654,9 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
"chosen": true
}
]
}
},
"rows_for_plan": 27,
"cost_for_plan": 10.021
}
]
},
......@@ -5503,6 +5673,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
}
]
......@@ -5522,6 +5694,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"rest_of_plan": [
{
"plan_prefix": ["t_inner_4"],
......@@ -5535,7 +5709,9 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
"chosen": true
}
]
}
},
"rows_for_plan": 27,
"cost_for_plan": 10.021
}
]
},
......@@ -5552,6 +5728,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
}
]
......@@ -5574,6 +5752,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1"],
......@@ -5588,6 +5768,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1"],
......@@ -5602,6 +5784,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 24.626,
"rest_of_plan": [
{
"plan_prefix": ["t_outer_1", "t_inner_1", "t_inner_2"],
......@@ -5616,6 +5800,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 15.541,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -5635,6 +5821,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 33.746,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -5654,7 +5842,9 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
"chosen": true
}
]
}
},
"rows_for_plan": 729,
"cost_for_plan": 181.56
}
]
},
......@@ -5676,6 +5866,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 243,
"cost_for_plan": 66.156,
"pruned_by_cost": true
}
]
......@@ -5693,6 +5885,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 11.931,
"rest_of_plan": [
{
"plan_prefix": [
......@@ -5712,6 +5906,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 30.146,
"pruned_by_cost": true
},
{
......@@ -5732,6 +5928,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 30.146,
"pruned_by_cost": true
}
]
......@@ -5749,6 +5947,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 15.541,
"pruned_by_heuristic": true
}
]
......@@ -5766,6 +5966,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 24.626,
"pruned_by_cost": true
},
{
......@@ -5781,6 +5983,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 13.815,
"pruned_by_heuristic": true
},
{
......@@ -5796,6 +6000,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 81,
"cost_for_plan": 24.626,
"pruned_by_cost": true
}
]
......@@ -5813,6 +6019,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 10.021,
"pruned_by_heuristic": true
},
{
......@@ -5828,6 +6036,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 10.021,
"pruned_by_heuristic": true
},
{
......@@ -5843,6 +6053,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 6.4103,
"pruned_by_heuristic": true
},
{
......@@ -5858,6 +6070,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 27,
"cost_for_plan": 10.021,
"pruned_by_heuristic": true
}
]
......@@ -5875,6 +6089,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
},
{
......@@ -5890,6 +6106,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
},
{
......@@ -5905,6 +6123,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
},
{
......@@ -5920,6 +6140,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051,
"pruned_by_heuristic": true
},
{
......@@ -5935,6 +6157,8 @@ t_outer_2.a in (select t_inner_3.a from t2 t_inner_3, t1 t_inner_4) {
}
]
},
"rows_for_plan": 9,
"cost_for_plan": 3.8154,
"pruned_by_heuristic": true
}
]
......@@ -6562,4 +6786,201 @@ INSERT INTO t1 VALUES ('a'),('b');
SET optimizer_trace = 'enabled=on';
DELETE FROM t1 WHERE f = 'x';
DROP TABLE t1;
#
# Print cost_for_plan and rows_for_plan for join prefix
#
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k (a int, b int, key(b));
insert into one_k select A.a + B.a*10 + C.a*100, A.a + B.a*10 + C.a*100 from t0 A, t0 B, t0 C;
analyze table t0, one_k persistent for all;
Table Op Msg_type Msg_text
test.t0 analyze status Engine-independent statistics collected
test.t0 analyze status OK
test.one_k analyze status Engine-independent statistics collected
test.one_k analyze status Table is already up to date
set @tmp_jcl=@@join_cache_level;
set join_cache_level=0;
set optimizer_trace=1;
# Check cost/row numbers when multiple tables are joined
# (cost_for_plan is the same as best_access_path.cost for single-table SELECTs
# but for joins using condition selectivity it is not as trivial. So,
# now we are printing it)
explain select * from t0 A, one_k B where A.a<5 and B.a<800;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE A ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE B ALL NULL NULL NULL NULL 1000 Using where
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.considered_execution_plans')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.considered_execution_plans'))
[
[
{
"plan_prefix":
[
],
"table": "A",
"best_access_path":
{
"considered_access_paths":
[
{
"access_type": "scan",
"resulting_rows": 5.9375,
"cost": 2.8296,
"chosen": true
}
]
},
"rows_for_plan": 5.9375,
"cost_for_plan": 4.0171,
"rest_of_plan":
[
{
"plan_prefix":
[
"A"
],
"table": "B",
"best_access_path":
{
"considered_access_paths":
[
{
"access_type": "scan",
"resulting_rows": 804.69,
"cost": 256.85,
"chosen": true
}
]
},
"rows_for_plan": 4777.8,
"cost_for_plan": 1216.4
}
]
},
{
"plan_prefix":
[
],
"table": "B",
"best_access_path":
{
"considered_access_paths":
[
{
"access_type": "scan",
"resulting_rows": 804.69,
"cost": 43.26,
"chosen": true
}
]
},
"rows_for_plan": 804.69,
"cost_for_plan": 204.2,
"pruned_by_heuristic": true
}
]
]
set join_cache_level=@tmp_jcl;
# This shows post-join selectivity
explain select * from t0 A, one_k B where A.a=B.b and B.a<800;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE A ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE B ref b b 5 test.A.a 1 Using where
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.considered_execution_plans')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.considered_execution_plans'))
[
[
{
"plan_prefix":
[
],
"table": "A",
"best_access_path":
{
"considered_access_paths":
[
{
"access_type": "scan",
"resulting_rows": 10,
"cost": 2.0171,
"chosen": true
}
]
},
"rows_for_plan": 10,
"cost_for_plan": 4.0171,
"rest_of_plan":
[
{
"plan_prefix":
[
"A"
],
"table": "B",
"best_access_path":
{
"considered_access_paths":
[
{
"access_type": "ref",
"index": "b",
"used_range_estimates": false,
"cause": "not available",
"rows": 1,
"cost": 20,
"chosen": true
},
{
"access_type": "scan",
"resulting_rows": 804.69,
"cost": 43.26,
"chosen": false
}
]
},
"rows_for_plan": 10,
"cost_for_plan": 26.017,
"selectivity": 0.8047
}
]
},
{
"plan_prefix":
[
],
"table": "B",
"best_access_path":
{
"considered_access_paths":
[
{
"access_type": "scan",
"resulting_rows": 804.69,
"cost": 43.26,
"chosen": true
}
]
},
"rows_for_plan": 804.69,
"cost_for_plan": 204.2,
"pruned_by_cost": true
}
]
]
set optimizer_trace='enabled=off';
mysql-test/main/opt_trace.test
View file @ 2dbe472e
......@@ -508,4 +508,31 @@ SET optimizer_trace = 'enabled=on';
DELETE FROM t1 WHERE f = 'x';
DROP TABLE t1;
--echo #
--echo # Print cost_for_plan and rows_for_plan for join prefix
--echo #
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k (a int, b int, key(b));
insert into one_k select A.a + B.a*10 + C.a*100, A.a + B.a*10 + C.a*100 from t0 A, t0 B, t0 C;
analyze table t0, one_k persistent for all;
set @tmp_jcl=@@join_cache_level;
set join_cache_level=0;
set optimizer_trace=1;
--echo # Check cost/row numbers when multiple tables are joined
--echo # (cost_for_plan is the same as best_access_path.cost for single-table SELECTs
--echo # but for joins using condition selectivity it is not as trivial. So,
--echo # now we are printing it)
explain select * from t0 A, one_k B where A.a<5 and B.a<800;
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.considered_execution_plans')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
set join_cache_level=@tmp_jcl;
--echo # This shows post-join selectivity
explain select * from t0 A, one_k B where A.a=B.b and B.a<800;
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.considered_execution_plans')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
set optimizer_trace='enabled=off';
mysql-test/main/opt_trace_index_merge.result
View file @ 2dbe472e
......@@ -213,7 +213,9 @@ explain select * from t1 where a=1 or b=1 {
"chosen": true
}
]
}
},
"rows_for_plan": 2,
"cost_for_plan": 4.5484
}
]
},
......
mysql-test/main/opt_trace_index_merge_innodb.result
View file @ 2dbe472e
......@@ -209,7 +209,9 @@ explain select * from t1 where pk1 != 0 and key1 = 1 {
"cause": "cost"
}
]
}
},
"rows_for_plan": 1,
"cost_for_plan": 2.2
}
]
},
......
mysql-test/main/opt_trace_security.result
View file @ 2dbe472e
......@@ -99,7 +99,9 @@ select * from db1.t1 {
"chosen": true
}
]
}
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051
}
]
},
......@@ -210,7 +212,9 @@ select * from db1.v1 {
"chosen": true
}
]
}
},
"rows_for_plan": 3,
"cost_for_plan": 2.6051
}
]
},
......
sql/sql_select.cc
View file @ 2dbe472e
......@@ -9383,6 +9383,11 @@ best_extension_by_limited_search(JOIN *join,
current_record_count /
(double) TIME_FOR_COMPARE));
if (unlikely(thd->trace_started()))
{
trace_one_table.add("rows_for_plan", current_record_count);
trace_one_table.add("cost_for_plan", current_read_time);
}
advance_sj_state(join, remaining_tables, idx, &current_record_count,
&current_read_time, &loose_scan_pos);
......@@ -9441,6 +9446,10 @@ best_extension_by_limited_search(JOIN *join,
remaining_tables &
~real_table_bit);
join->positions[idx].cond_selectivity= pushdown_cond_selectivity;
if (unlikely(thd->trace_started()) && pushdown_cond_selectivity < 1.0)
trace_one_table.add("selectivity", pushdown_cond_selectivity);
double partial_join_cardinality= current_record_count *
pushdown_cond_selectivity;
if ( (search_depth > 1) && (remaining_tables & ~real_table_bit) & allowed_tables )
......
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