drop table if exists t0,t1,t2,t3; create table t0 (a int); INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); # r_filtered=30%, because 3 rows match: 0,1,2 analyze format=json select * from t0 where a<3; ANALYZE { "query_block": { "select_id": 1, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "t0", "access_type": "ALL", "r_loops": 1, "rows": 10, "r_rows": 10, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 30, "attached_condition": "(t0.a < 3)" } } } create table t1 (a int, b int, c int, key(a)); insert into t1 select A.a*10 + B.a, A.a*10 + B.a, A.a*10 + B.a from t0 A, t0 B; analyze select * from t0, t1 where t1.a=t0.a and t0.a > 9; id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 10 10.00 100.00 0.00 Using where 1 SIMPLE t1 ref a a 5 test.t0.a 1 NULL 100.00 NULL analyze format=json select * from t0, t1 where t1.a=t0.a and t0.a > 9; ANALYZE { "query_block": { "select_id": 1, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "t0", "access_type": "ALL", "r_loops": 1, "rows": 10, "r_rows": 10, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 0, "attached_condition": "((t0.a > 9) and (t0.a is not null))" }, "table": { "table_name": "t1", "access_type": "ref", "possible_keys": ["a"], "key": "a", "key_length": "5", "used_key_parts": ["a"], "ref": ["test.t0.a"], "r_loops": 0, "rows": 1, "r_rows": null, "filtered": 100, "r_filtered": null } } } analyze select * from t0, t1 where t1.a=t0.a and t1.b<4; id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 SIMPLE t0 ALL NULL NULL NULL NULL 10 10.00 100.00 100.00 Using where 1 SIMPLE t1 ref a a 5 test.t0.a 1 1.00 100.00 40.00 Using where analyze format=json select * from t0, t1 where t1.a=t0.a and t1.b<4; ANALYZE { "query_block": { "select_id": 1, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "t0", "access_type": "ALL", "r_loops": 1, "rows": 10, "r_rows": 10, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 100, "attached_condition": "(t0.a is not null)" }, "table": { "table_name": "t1", "access_type": "ref", "possible_keys": ["a"], "key": "a", "key_length": "5", "used_key_parts": ["a"], "ref": ["test.t0.a"], "r_loops": 10, "rows": 1, "r_rows": 1, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 40, "attached_condition": "(t1.b < 4)" } } } analyze select * from t1 tbl1, t1 tbl2 where tbl1.b<2 and tbl2.b>5; id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra 1 SIMPLE tbl1 ALL NULL NULL NULL NULL 100 100.00 100.00 2.00 Using where 1 SIMPLE tbl2 ALL NULL NULL NULL NULL 100 100.00 100.00 94.00 Using where; Using join buffer (flat, BNL join) analyze format=json select * from t1 tbl1, t1 tbl2 where tbl1.b<20 and tbl2.b<60; ANALYZE { "query_block": { "select_id": 1, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "tbl1", "access_type": "ALL", "r_loops": 1, "rows": 100, "r_rows": 100, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 20, "attached_condition": "(tbl1.b < 20)" }, "block-nl-join": { "table": { "table_name": "tbl2", "access_type": "ALL", "r_loops": 1, "rows": 100, "r_rows": 100, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 60, "attached_condition": "(tbl2.b < 60)" }, "buffer_type": "flat", "buffer_size": "128Kb", "join_type": "BNL", "r_filtered": 100 } } } analyze format=json select * from t1 tbl1, t1 tbl2 where tbl1.b<20 and tbl2.b<60 and tbl1.c > tbl2.c; ANALYZE { "query_block": { "select_id": 1, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "tbl1", "access_type": "ALL", "r_loops": 1, "rows": 100, "r_rows": 100, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 20, "attached_condition": "(tbl1.b < 20)" }, "block-nl-join": { "table": { "table_name": "tbl2", "access_type": "ALL", "r_loops": 1, "rows": 100, "r_rows": 100, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 60, "attached_condition": "(tbl2.b < 60)" }, "buffer_type": "flat", "buffer_size": "128Kb", "join_type": "BNL", "attached_condition": "(tbl1.c > tbl2.c)", "r_filtered": 15.833 } } } drop table t1; drop table t0; # # MDEV-7674: ANALYZE shows r_rows=0 # create table t1(a int); insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t2 (a int, key(a)); insert into t2 values (0),(1); analyze format=json select * from t1 straight_join t2 force index(a) where t2.a=t1.a; 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_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 100, "attached_condition": "(t1.a is not null)" }, "table": { "table_name": "t2", "access_type": "ref", "possible_keys": ["a"], "key": "a", "key_length": "5", "used_key_parts": ["a"], "ref": ["test.t1.a"], "r_loops": 10, "rows": 2, "r_rows": 0.2, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 100, "using_index": true } } } drop table t1,t2; create table t1(a int); insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); # # MDEV-7679: ANALYZE crashes when printing WHERE when no default db # select database(); database() test select database(); database() NULL analyze format=json select * from test.t1 where t1.a<5; 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_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 50, "attached_condition": "(test.t1.a < 5)" } } } drop table t1; # # MDEV-7812: ANALYZE FORMAT=JSON UPDATE/DELETE doesnt print # the r_total_time_ms # create table t2(a int); insert into t2 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t3(a int); insert into t3 select A.a + B.a* 10 + C.a * 100 from t2 A, t2 B, t2 C; create table t1 (pk int primary key); insert into t1 select a from t3; alter table t1 add b int; analyze format=json update t1 set b=pk; ANALYZE { "query_block": { "select_id": 1, "r_total_time_ms": "REPLACED", "table": { "update": 1, "table_name": "t1", "access_type": "ALL", "rows": 1000, "r_rows": 1000, "r_filtered": 100, "r_total_time_ms": "REPLACED" } } } analyze format=json select * from t1 where pk < 10 and b > 4; ANALYZE { "query_block": { "select_id": 1, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "t1", "access_type": "range", "possible_keys": ["PRIMARY"], "key": "PRIMARY", "key_length": "4", "used_key_parts": ["pk"], "r_loops": 1, "rows": 11, "r_rows": 10, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 50, "index_condition": "(t1.pk < 10)", "attached_condition": "(t1.b > 4)" } } } analyze format=json delete from t1 where pk < 10 and b > 4; ANALYZE { "query_block": { "select_id": 1, "r_total_time_ms": "REPLACED", "table": { "delete": 1, "table_name": "t1", "access_type": "range", "possible_keys": ["PRIMARY"], "key": "PRIMARY", "key_length": "4", "used_key_parts": ["pk"], "rows": 11, "r_rows": 10, "r_filtered": 50, "r_total_time_ms": "REPLACED", "attached_condition": "((t1.pk < 10) and (t1.b > 4))" } } } drop table t1, t3, t2; # # MDEV-7833:ANALYZE FORMAT=JSON and Range checked for each record # create table t3(a int); insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t4(a int); insert into t4 select A.a + B.a* 10 + C.a * 100 from t3 A, t3 B, t3 C; create table t1 (lb1 int, rb1 int, lb2 int, rb2 int, c1 int, c2 int); insert into t1 values (1,2,10,20,15,15); insert into t1 values (3,5,10,20,15,15); insert into t1 values (10,20,10,20,15,15); insert into t1 values (10,20,1,2,15,15); insert into t1 values (10,20,10,20,1,3); create table t2 (key1 int, key2 int, key3 int, key4 int, col1 int, key(key1), key(key2), key(key3), key(key4)); insert into t2 select a,a,a,a,a from t3; insert into t2 select 15,15,15,15,15 from t4; analyze format=json select * from t1, t2 where (t2.key1 between t1.lb1 and t1.rb1) and (t2.key2 between t1.lb2 and t1.rb2) and (t2.key3=t1.c1 OR t2.key4=t1.c2); 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": 5, "r_rows": 5, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 100 }, "range-checked-for-each-record": { "keys": ["key1", "key2", "key3", "key4"], "r_keys": { "full_scan": 1, "index_merge": 1, "range": { "key1": 2, "key2": 1, "key3": 0, "key4": 0 } }, "table": { "table_name": "t2", "access_type": "ALL", "possible_keys": ["key1", "key2", "key3", "key4"], "r_loops": 5, "rows": 1010, "r_rows": 203.8, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 98.135 } } } } drop table t1,t2,t3,t4; # # MDEV-7904: ANALYZE FORMAT=JSON SELECT .. UNION SELECT doesn't print r_rows for union output # create table t0 (a int); INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t1 (a int); INSERT INTO t1 select * from t0; analyze format=json (select * from t1 tbl1 where a<5) union (select * from t1 tbl2 where a in (2,3)); ANALYZE { "query_block": { "union_result": { "table_name": "", "access_type": "ALL", "r_loops": 1, "r_rows": 5, "query_specifications": [ { "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_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 50, "attached_condition": "(tbl1.a < 5)" } } }, { "query_block": { "select_id": 2, "r_loops": 1, "r_total_time_ms": "REPLACED", "table": { "table_name": "tbl2", "access_type": "ALL", "r_loops": 1, "rows": 10, "r_rows": 10, "r_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 20, "attached_condition": "(tbl2.a in (2,3))" } } } ] } } } drop table t0, t1;