mirror of
https://github.com/MariaDB/server.git
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1034 lines
27 KiB
Text
1034 lines
27 KiB
Text
drop table if exists t0,t1,t2,t3;
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create table t0 (a int);
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INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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# r_filtered=30%, because 3 rows match: 0,1,2
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analyze format=json select * from t0 where a<3;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t0",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 10,
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"r_rows": 10,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 30,
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"attached_condition": "t0.a < 3"
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}
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}
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}
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create table t1 (a int, b int, c int, key(a));
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insert into t1 select A.a*10 + B.a, A.a*10 + B.a, A.a*10 + B.a from t0 A, t0 B;
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analyze
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select * from t0, t1 where t1.a=t0.a and t0.a > 9;
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id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
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1 SIMPLE t0 ALL NULL NULL NULL NULL 10 10.00 100.00 0.00 Using where
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1 SIMPLE t1 ref a a 5 test.t0.a 1 NULL 100.00 NULL
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analyze format=json
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select * from t0, t1 where t1.a=t0.a and t0.a > 9;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t0",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 10,
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"r_rows": 10,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 0,
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"attached_condition": "t0.a > 9 and t0.a is not null"
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},
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"table": {
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"table_name": "t1",
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"access_type": "ref",
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"possible_keys": ["a"],
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"key": "a",
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"key_length": "5",
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"used_key_parts": ["a"],
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"ref": ["test.t0.a"],
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"r_loops": 0,
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"rows": 1,
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"r_rows": null,
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": null
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}
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}
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}
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analyze
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select * from t0, t1 where t1.a=t0.a and t1.b<4;
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id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
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1 SIMPLE t0 ALL NULL NULL NULL NULL 10 10.00 100.00 100.00 Using where
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1 SIMPLE t1 ref a a 5 test.t0.a 1 1.00 100.00 40.00 Using where
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analyze format=json
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select * from t0, t1 where t1.a=t0.a and t1.b<4;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t0",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 10,
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"r_rows": 10,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100,
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"attached_condition": "t0.a is not null"
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},
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"table": {
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"table_name": "t1",
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"access_type": "ref",
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"possible_keys": ["a"],
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"key": "a",
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"key_length": "5",
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"used_key_parts": ["a"],
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"ref": ["test.t0.a"],
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"r_loops": 10,
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"rows": 1,
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"r_rows": 1,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 40,
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"attached_condition": "t1.b < 4"
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}
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}
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}
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analyze
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select * from t1 tbl1, t1 tbl2 where tbl1.b<2 and tbl2.b>5;
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id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
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1 SIMPLE tbl1 ALL NULL NULL NULL NULL 100 100.00 100.00 2.00 Using where
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1 SIMPLE tbl2 ALL NULL NULL NULL NULL 100 100.00 100.00 94.00 Using where; Using join buffer (flat, BNL join)
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analyze format=json
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select * from t1 tbl1, t1 tbl2 where tbl1.b<20 and tbl2.b<60;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "tbl1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 100,
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"r_rows": 100,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 20,
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"attached_condition": "tbl1.b < 20"
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},
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"block-nl-join": {
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"table": {
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"table_name": "tbl2",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 100,
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"r_rows": 100,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 60,
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"attached_condition": "tbl2.b < 60"
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},
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"buffer_type": "flat",
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"buffer_size": "1Kb",
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"join_type": "BNL",
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"r_loops": 20,
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"r_filtered": 100,
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"r_unpack_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_effective_rows": 60
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}
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}
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}
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analyze format=json
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select * from t1 tbl1, t1 tbl2 where tbl1.b<20 and tbl2.b<60 and tbl1.c > tbl2.c;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "tbl1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 100,
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"r_rows": 100,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 20,
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"attached_condition": "tbl1.b < 20"
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},
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"block-nl-join": {
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"table": {
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"table_name": "tbl2",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 100,
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"r_rows": 100,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 60,
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"attached_condition": "tbl2.b < 60"
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},
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"buffer_type": "flat",
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"buffer_size": "1Kb",
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"join_type": "BNL",
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"attached_condition": "tbl1.c > tbl2.c",
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"r_loops": 20,
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"r_filtered": 15.83333333,
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"r_unpack_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_effective_rows": 60
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}
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}
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}
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drop table t1;
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drop table t0;
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#
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# MDEV-7674: ANALYZE shows r_rows=0
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#
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create table t1(a int);
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insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t2 (a int, key(a));
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insert into t2 values (0),(1);
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analyze format=json select * from t1 straight_join t2 force index(a) where t2.a=t1.a;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 10,
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"r_rows": 10,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100,
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"attached_condition": "t1.a is not null"
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},
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"table": {
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"table_name": "t2",
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"access_type": "ref",
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"possible_keys": ["a"],
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"key": "a",
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"key_length": "5",
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"used_key_parts": ["a"],
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"ref": ["test.t1.a"],
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"r_loops": 10,
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"rows": 2,
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"r_rows": 0.2,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100,
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"using_index": true
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}
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}
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}
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drop table t1,t2;
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create table t1(a int);
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insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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#
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# MDEV-7679: ANALYZE crashes when printing WHERE when no default db
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#
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select database();
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database()
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test
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connect con1,localhost,root,,*NO-ONE*;
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connection con1;
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select database();
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database()
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NULL
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analyze format=json select * from test.t1 where t1.a<5;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 10,
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"r_rows": 10,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 50,
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"attached_condition": "test.t1.a < 5"
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}
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}
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}
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disconnect con1;
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connection default;
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drop table t1;
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#
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# MDEV-7812: ANALYZE FORMAT=JSON UPDATE/DELETE doesnt print
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# the r_total_time_ms
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#
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create table t2(a int);
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insert into t2 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t3(a int);
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insert into t3 select A.a + B.a* 10 + C.a * 100 from t2 A, t2 B, t2 C;
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create table t1 (pk int primary key);
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insert into t1 select a from t3;
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alter table t1 add b int;
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analyze format=json
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update t1 set b=pk;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"update": 1,
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"table_name": "t1",
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"access_type": "ALL",
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"rows": 1000,
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"r_rows": 1000,
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"r_filtered": 100,
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"r_total_time_ms": "REPLACED",
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"r_engine_stats": REPLACED
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}
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}
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}
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analyze format=json
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select * from t1 where pk < 10 and b > 4;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t1",
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"access_type": "range",
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"possible_keys": ["PRIMARY"],
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"key": "PRIMARY",
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"key_length": "4",
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"used_key_parts": ["pk"],
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"r_loops": 1,
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"rows": 10,
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"r_rows": 10,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 50,
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"index_condition": "t1.pk < 10",
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"attached_condition": "t1.b > 4"
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}
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}
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}
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analyze format=json
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delete from t1 where pk < 10 and b > 4;
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"delete": 1,
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"table_name": "t1",
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"access_type": "range",
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"possible_keys": ["PRIMARY"],
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"key": "PRIMARY",
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"key_length": "4",
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"used_key_parts": ["pk"],
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"rows": 10,
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"r_rows": 10,
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"r_filtered": 50,
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"r_total_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"attached_condition": "t1.pk < 10 and t1.b > 4"
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}
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}
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}
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drop table t1, t3, t2;
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#
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# MDEV-7833:ANALYZE FORMAT=JSON and Range checked for each record
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#
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create table t3(a int);
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insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t4(a int);
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insert into t4 select A.a + B.a* 10 + C.a * 100 from t3 A, t3 B, t3 C;
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create table t1 (lb1 int, rb1 int, lb2 int, rb2 int, c1 int, c2 int);
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insert into t1 values (1,2,10,20,15,15);
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insert into t1 values (3,5,10,20,15,15);
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insert into t1 values (10,20,10,20,15,15);
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insert into t1 values (10,20,1,2,15,15);
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insert into t1 values (10,20,10,20,1,3);
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create table t2 (key1 int, key2 int, key3 int, key4 int, col1 int,
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key(key1), key(key2), key(key3), key(key4));
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insert into t2 select a,a,a,a,a from t3;
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insert into t2 select 15,15,15,15,15 from t4;
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analyze format=json
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select * from t1, t2 where (t2.key1 between t1.lb1 and t1.rb1) and
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(t2.key2 between t1.lb2 and t1.rb2) and
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(t2.key3=t1.c1 OR t2.key4=t1.c2);
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ANALYZE
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 5,
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"r_rows": 5,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100
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},
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"range-checked-for-each-record": {
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"keys": ["key1", "key2", "key3", "key4"],
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"r_keys": {
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"full_scan": 1,
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"index_merge": 1,
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"range": {
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"key1": 2,
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"key2": 1,
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"key3": 0,
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"key4": 0
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}
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},
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"table": {
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"table_name": "t2",
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"access_type": "ALL",
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"possible_keys": ["key1", "key2", "key3", "key4"],
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"r_loops": 5,
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"rows": 1010,
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"r_rows": 203.8,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 98.13542689
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}
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}
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}
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}
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drop table t1,t2,t3,t4;
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#
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# MDEV-7904: ANALYZE FORMAT=JSON SELECT .. UNION SELECT doesn't print r_rows for union output
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#
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create table t0 (a int);
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INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t1 (a int);
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INSERT INTO t1 select * from t0;
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analyze format=json (select * from t1 tbl1 where a<5) union (select * from t1 tbl2 where a in (2,3));
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ANALYZE
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{
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"query_block": {
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"union_result": {
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"table_name": "<union1,2>",
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"access_type": "ALL",
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|
"r_loops": 1,
|
|
"r_rows": 5,
|
|
"query_specifications": [
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{
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|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"table": {
|
|
"table_name": "tbl1",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 10,
|
|
"r_rows": 10,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 50,
|
|
"attached_condition": "tbl1.a < 5"
|
|
}
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "UNION",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"table": {
|
|
"table_name": "tbl2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 10,
|
|
"r_rows": 10,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 20,
|
|
"attached_condition": "tbl2.a in (2,3)"
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
drop table t0, t1;
|
|
#
|
|
# MDEV-7970: EXPLAIN FORMAT=JSON does not print HAVING
|
|
#
|
|
create table t0(a int);
|
|
insert into t0 values (0),(1),(2),(3);
|
|
create table t1(a int);
|
|
insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
|
|
create table t2 (
|
|
a int,
|
|
b int,
|
|
key (a)
|
|
);
|
|
insert into t2 select A.a*1000 + B.a, A.a*1000 + B.a from t0 A, t1 B;
|
|
# normal HAVING
|
|
analyze format=json select a, max(b) as TOP from t2 group by a having TOP > a;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"having_condition": "TOP > t2.a",
|
|
"filesort": {
|
|
"sort_key": "t2.a",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"r_used_priority_queue": false,
|
|
"r_output_rows": 0,
|
|
"r_buffer_size": "REPLACED",
|
|
"r_sort_mode": "sort_key,rowid",
|
|
"temporary_table": {
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 256,
|
|
"r_rows": 256,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
# HAVING is always TRUE (not printed)
|
|
analyze format=json select a, max(b) as TOP from t2 group by a having 1<>2;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"filesort": {
|
|
"sort_key": "t2.a",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"r_used_priority_queue": false,
|
|
"r_output_rows": 256,
|
|
"r_buffer_size": "REPLACED",
|
|
"r_sort_mode": "sort_key,rowid",
|
|
"temporary_table": {
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 256,
|
|
"r_rows": 256,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
# HAVING is always FALSE (intercepted by message)
|
|
analyze format=json select a, max(b) as TOP from t2 group by a having 1=2;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"table": {
|
|
"message": "Impossible HAVING"
|
|
}
|
|
}
|
|
}
|
|
# HAVING is absent
|
|
analyze format=json select a, max(b) as TOP from t2 group by a;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"filesort": {
|
|
"sort_key": "t2.a",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"r_used_priority_queue": false,
|
|
"r_output_rows": 256,
|
|
"r_buffer_size": "REPLACED",
|
|
"r_sort_mode": "sort_key,rowid",
|
|
"temporary_table": {
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 256,
|
|
"r_rows": 256,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
drop table t0, t1, t2;
|
|
#
|
|
# MDEV-7267: Server crashes in Item_field::print on ANALYZE FORMAT=JSON
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (b INT);
|
|
INSERT INTO t2 VALUES (3),(4);
|
|
ANALYZE FORMAT=JSON SELECT STRAIGHT_JOIN * FROM t1, t2 WHERE b IN ( SELECT a FROM t1 );
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"table": {
|
|
"table_name": "t1",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
},
|
|
"block-nl-join": {
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 0,
|
|
"attached_condition": "<in_optimizer>(t2.b,t2.b in (subquery#2))"
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "65",
|
|
"join_type": "BNL",
|
|
"attached_condition": "<in_optimizer>(t2.b,t2.b in (subquery#2))",
|
|
"r_loops": 2,
|
|
"r_filtered": null,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 0
|
|
},
|
|
"subqueries": [
|
|
{
|
|
"materialization": {
|
|
"r_strategy": "index_lookup",
|
|
"r_loops": 2,
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"table": {
|
|
"table_name": "t1",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
drop table t1,t2;
|
|
#
|
|
# MDEV-8864: Server crash #2 in Item_field::print on ANALYZE FORMAT=JSON
|
|
#
|
|
CREATE TABLE t1 (f1 INT) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (f2 INT) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (2),(3);
|
|
CREATE TABLE t3 (f3 INT) ENGINE=MyISAM;
|
|
INSERT INTO t3 VALUES (3),(4);
|
|
ANALYZE FORMAT=JSON
|
|
SELECT GROUP_CONCAT(f3) AS gc, ( SELECT MAX(f1) FROM t1, t2 WHERE f2 = f3 ) sq
|
|
FROM t2, t3
|
|
WHERE f3 IN ( 1, 2 )
|
|
GROUP BY sq ORDER BY gc;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"filesort": {
|
|
"sort_key": "group_concat(t3.f3 separator ',')",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"r_used_priority_queue": false,
|
|
"r_output_rows": 0,
|
|
"r_buffer_size": "REPLACED",
|
|
"r_sort_mode": "packed_sort_key,rowid",
|
|
"temporary_table": {
|
|
"filesort": {
|
|
"sort_key": "(subquery#2)",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"r_used_priority_queue": false,
|
|
"r_output_rows": 0,
|
|
"r_buffer_size": "REPLACED",
|
|
"r_sort_mode": "sort_key,rowid",
|
|
"temporary_table": {
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
},
|
|
"block-nl-join": {
|
|
"table": {
|
|
"table_name": "t3",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 0,
|
|
"attached_condition": "t3.f3 in (1,2)"
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "1",
|
|
"join_type": "BNL",
|
|
"r_loops": 2,
|
|
"r_filtered": null,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 0
|
|
},
|
|
"subqueries": [
|
|
{
|
|
"expression_cache": {
|
|
"state": "uninitialized",
|
|
"r_loops": 0,
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"table": {
|
|
"table_name": "t1",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"rows": 2,
|
|
"r_rows": null,
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": null
|
|
},
|
|
"block-nl-join": {
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"rows": 2,
|
|
"r_rows": null,
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": null
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "65",
|
|
"join_type": "BNL",
|
|
"attached_condition": "t2.f2 = t3.f3",
|
|
"r_loops": 0,
|
|
"r_filtered": null,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": null
|
|
}
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
drop table t1,t2,t3;
|
|
#
|
|
# MDEV-13286: Floating point exception in Filesort_tracker::print_json_members(Json_writer*)
|
|
#
|
|
create table t0(a int);
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t1 (a int, b int, c int);
|
|
insert into t1 select a,a,a from t0;
|
|
create table t2 as select * from t1;
|
|
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;
|
|
ANALYZE
|
|
{
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"table": {
|
|
"table_name": "t1",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 10,
|
|
"r_rows": 10,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 0,
|
|
"attached_condition": "t1.a < 0"
|
|
},
|
|
"subqueries": [
|
|
{
|
|
"expression_cache": {
|
|
"state": "uninitialized",
|
|
"r_loops": 0,
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"read_sorted_file": {
|
|
"r_rows": null,
|
|
"filesort": {
|
|
"sort_key": "t2.c",
|
|
"r_loops": null,
|
|
"r_limit": null,
|
|
"r_used_priority_queue": null,
|
|
"r_output_rows": null,
|
|
"r_sort_mode": "sort_key,rowid",
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 0,
|
|
"rows": 10,
|
|
"r_rows": null,
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": null,
|
|
"attached_condition": "t2.a < t1.a"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
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",
|
|
"r_engine_stats": 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",
|
|
"r_engine_stats": 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_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"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",
|
|
"r_engine_stats": 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",
|
|
"r_engine_stats": 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_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 2.97
|
|
}
|
|
}
|
|
}
|
|
set join_cache_level=@tmp;
|
|
drop table t10, t11;
|