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": "1Kb", "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": "1Kb", "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 connect con1,localhost,root,,*NO-ONE*; connection con1; 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" } } } disconnect con1; connection default; 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": 10, "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": 10, "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, "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_total_time_ms": "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", "temporary_table": { "table": { "table_name": "t2", "access_type": "ALL", "r_loops": 1, "rows": 256, "r_rows": 256, "r_total_time_ms": "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", "temporary_table": { "table": { "table_name": "t2", "access_type": "ALL", "r_loops": 1, "rows": 256, "r_rows": 256, "r_total_time_ms": "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", "temporary_table": { "table": { "table_name": "t2", "access_type": "ALL", "r_loops": 1, "rows": 256, "r_rows": 256, "r_total_time_ms": "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_total_time_ms": "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_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 0, "attached_condition": "(t2.b,t2.b in (subquery#2))" }, "buffer_type": "flat", "buffer_size": "65", "join_type": "BNL", "attached_condition": "(t2.b,t2.b in (subquery#2))", "r_filtered": null }, "subqueries": [ { "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_total_time_ms": "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", "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", "temporary_table": { "table": { "table_name": "t2", "access_type": "ALL", "r_loops": 1, "rows": 2, "r_rows": 2, "r_total_time_ms": "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_total_time_ms": "REPLACED", "filtered": 100, "r_filtered": 0, "attached_condition": "t3.f3 in (1,2)" }, "buffer_type": "flat", "buffer_size": "1", "join_type": "BNL", "r_filtered": null }, "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, "filtered": 100, "r_filtered": null }, "block-nl-join": { "table": { "table_name": "t2", "access_type": "ALL", "r_loops": 0, "rows": 2, "r_rows": null, "filtered": 100, "r_filtered": null }, "buffer_type": "flat", "buffer_size": "65", "join_type": "BNL", "attached_condition": "t2.f2 = t3.f3", "r_filtered": 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