mirror of
https://github.com/MariaDB/server.git
synced 2025-02-05 05:12:17 +01:00
4ed8d98ba7
Fix a race condition in a testcase: it tried to KILL a running SET query. The query could finish before KILL command killed it, which resulted in: query 'reap' succeeded - should have failed with error ER_QUERY_INTERRUPTED Fixed by forcing the query to first block for SHOW ANALYZE and then block again waiting to be KILLed.
482 lines
17 KiB
Text
482 lines
17 KiB
Text
drop table if exists t0, t1, t2, t3, t4;
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drop view if exists v1;
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SET @old_debug= @@session.debug;
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set debug_sync='RESET';
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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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alter table t1 add b int, add c int, add filler char(32);
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insert into t1 select A.a, 10*B.a, 100*C.a, 'foo filler' from t0 A, t0 B, t0 C;
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alter table t1 add key(a), add key(b);
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analyze table t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status Engine-independent statistics collected
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test.t1 analyze status Table is already up to date
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show analyze for 1001;
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ERROR HY000: Unknown thread id: 1001
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show analyze for (select a from t0 limit 1);
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ERROR HY000: You may only use constant expressions in this statement
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connect con1, localhost, root,,;
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connection con1;
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SET @old_debug= @@session.debug;
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connection default;
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show analyze for $thr2;
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ERROR HY000: Target is not executing an operation with a query plan
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show analyze for $thr1;
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ERROR HY000: Target is not executing an operation with a query plan
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connection con1;
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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select count(*) from t1 where c < 500;
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connection default;
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show analyze for $thr2;
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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 t1 ALL NULL NULL NULL NULL 1000 1000.00 50.00 50.00 Using where
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Warnings:
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Note 1003 select count(*) from t1 where c < 500
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connection con1;
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count(*)
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500
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select max(c) from t1 where c < 10;
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connection default;
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show analyze for $thr2;
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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 t1 ALL NULL NULL NULL NULL 1000 1000.00 10.00 10.00 Using where
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Warnings:
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Note 1003 select max(c) from t1 where c < 10
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connection con1;
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max(c)
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0
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# We can catch ANALYZE too.
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analyze select max(c) from t1 where a < 10;
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connection default;
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show analyze for $thr2;
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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 t1 ALL a NULL NULL NULL 1000 1000.00 99.90 100.00 Using where
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Warnings:
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Note 1003 analyze select max(c) from t1 where a < 10
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connection con1;
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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 t1 ALL a NULL NULL NULL 1000 1000.00 99.90 100.00 Using where
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SET debug_dbug=@old_debug;
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# UNION, select, first branch
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
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connection default;
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show analyze for $thr2;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
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2 UNION B ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 0.00 NULL NULL
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Warnings:
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Note 1003 select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9
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connection con1;
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max(a)
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5
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10
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# UNION, select, second branch
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set @show_explain_probe_select_id=2;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
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connection default;
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show analyze for $thr2;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
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2 UNION B ALL NULL NULL NULL NULL 10 10.00 100.00 10.00 Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 0.00 NULL NULL
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Warnings:
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Note 1003 select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9
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connection con1;
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max(a)
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5
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10
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# UNION, analyze, first branch
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
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connection default;
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show analyze for $thr2;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
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2 UNION B ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 0.00 NULL NULL
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Warnings:
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Note 1003 analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9
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connection con1;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
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2 UNION B ALL NULL NULL NULL NULL 10 10.00 100.00 10.00 Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 7.00 NULL NULL
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# UNION, analyze, second branch
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set @show_explain_probe_select_id=2;
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analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
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connection default;
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show analyze for $thr2;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
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2 UNION B ALL NULL NULL NULL NULL 10 10.00 100.00 10.00 Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 0.00 NULL NULL
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Warnings:
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Note 1003 analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9
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connection con1;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 60.00 Using where
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2 UNION B ALL NULL NULL NULL NULL 10 10.00 100.00 10.00 Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 7.00 NULL NULL
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SET debug_dbug=@old_debug;
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# Uncorrelated subquery, select
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
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connection default;
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show analyze for $thr2;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
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2 SUBQUERY B ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
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Warnings:
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Note 1003 select a, (select max(a) from t0 B where a>6) from t0 A where a<2
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connection con1;
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a (select max(a) from t0 B where a>6)
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0 9
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1 9
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SET debug_dbug=@old_debug;
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# Uncorrelated subquery, analyze
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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analyze select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
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connection default;
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show analyze for $thr2;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
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2 SUBQUERY B ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
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Warnings:
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Note 1003 analyze select a, (select max(a) from t0 B where a>6) from t0 A where a<2
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connection con1;
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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 PRIMARY A ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
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2 SUBQUERY B ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
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SET debug_dbug=@old_debug;
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# correlated subquery, select, before execution start
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_start';
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select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
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connection default;
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show analyze for $thr2;
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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 PRIMARY a ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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2 DEPENDENT SUBQUERY b ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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Warnings:
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Note 1003 select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2
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connection con1;
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a (select max(a) from t0 b where b.a+a.a<10)
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0 9
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1 8
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SET debug_dbug=@old_debug;
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# correlated subquery, select, after execution
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
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connection default;
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show analyze for $thr2;
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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 PRIMARY a ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
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2 DEPENDENT SUBQUERY b ALL NULL NULL NULL NULL 10 10.00 100.00 95.00 Using where
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Warnings:
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Note 1003 select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2
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connection con1;
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a (select max(a) from t0 b where b.a+a.a<10)
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0 9
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1 8
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SET debug_dbug=@old_debug;
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# correlated subquery, analyze
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set @show_explain_probe_select_id=1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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analyze select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
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connection default;
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show analyze for $thr2;
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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 PRIMARY a ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
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2 DEPENDENT SUBQUERY b ALL NULL NULL NULL NULL 10 10.00 100.00 95.00 Using where
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Warnings:
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Note 1003 analyze select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2
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connection con1;
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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 PRIMARY a ALL NULL NULL NULL NULL 10 10.00 100.00 20.00 Using where
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2 DEPENDENT SUBQUERY b ALL NULL NULL NULL NULL 10 10.00 100.00 95.00 Using where
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SET debug_dbug=@old_debug;
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# Try to do SHOW ANALYZE for a query that runs a SET command:
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#
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create table t2 (a int);
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insert into t2 values (1),(2);
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set @show_explain_probe_select_id=3;
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SET debug_dbug='+d,show_explain_probe_join_exec_start';
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set @foo= (select max(a) from t2
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where a + (select max(a) from t0 where t0.a>t2.a) < 10000);
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connection default;
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show analyze for $thr2;
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ERROR HY000: Target is not executing an operation with a query plan
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kill query $thr2;
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connection con1;
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ERROR 70100: Query execution was interrupted
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SET debug_dbug=@old_debug;
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drop table t2;
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#
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# Attempt SHOW ANALYZE for an UPDATE
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#
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create table t2 as select a as a, a as dummy from t0 limit 2;
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set @show_explain_probe_select_id=2;
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SET debug_dbug='+d,show_explain_probe_join_exec_start';
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update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
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connection default;
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 2 1.00 100.00 0.00 Using where
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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Warnings:
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Note 1003 update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 2 2.00 100.00 0.00 Using where
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
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Warnings:
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Note 1003 update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3
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connection con1;
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drop table t2;
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SET debug_dbug=@old_debug;
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#
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# Attempt SHOW ANALYZE for a DELETE
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#
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create table t2 as select a as a, a as dummy from t0 limit 2;
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set @show_explain_probe_select_id=2;
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SET debug_dbug='+d,show_explain_probe_join_exec_start';
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delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
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connection default;
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 2 1.00 100.00 0.00 Using where
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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Warnings:
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Note 1003 delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 2 2.00 100.00 0.00 Using where
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
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Warnings:
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Note 1003 delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3
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connection con1;
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drop table t2;
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SET debug_dbug=@old_debug;
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#
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# Multiple SHOW ANALYZE calls for one select
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#
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create table t2 as select a as a, a as dummy from t0 limit 3;
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set @show_explain_probe_select_id=2;
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SET debug_dbug='+d,show_explain_probe_join_exec_start';
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select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2;
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connection default;
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 3 1.00 100.00 100.00
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 NULL 100.00 NULL Using where
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Warnings:
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Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 3 2.00 100.00 100.00
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where
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Warnings:
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Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
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show analyze for $thr2;
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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 PRIMARY t2 ALL NULL NULL NULL NULL 3 3.00 100.00 100.00
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2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 10.00 100.00 25.00 Using where
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Warnings:
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Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
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connection con1;
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a SUBQ
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0 0
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1 0
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2 0
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SET debug_dbug=@old_debug;
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drop table t2;
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#
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# SHOW ANALYZE for SELECT ... ORDER BY with "Using filesort"
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#
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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set @show_explain_probe_select_id=1;
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select * from t0 order by a;
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connection default;
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show analyze for $thr2;
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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 filesort
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Warnings:
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Note 1003 select * from t0 order by a
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connection con1;
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a
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0
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1
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2
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3
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4
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5
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6
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7
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8
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SET debug_dbug=@old_debug;
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#
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# SHOW ANALYZE for SELECT ... with "Using temporary"
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#
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connection con1;
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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set @show_explain_probe_select_id=1;
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select distinct a from t0;
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connection default;
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show analyze for $thr2;
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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 temporary
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Warnings:
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Note 1003 select distinct a from t0
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connection con1;
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a
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0
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1
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2
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3
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4
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5
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6
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7
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8
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9
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SET debug_dbug=@old_debug;
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#
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# SHOW ANALYZE for SELECT ... with "Using temporary; Using filesort"
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#
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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set @show_explain_probe_select_id=1;
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select distinct a from t0;
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connection default;
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show analyze for $thr2;
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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 temporary
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Warnings:
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Note 1003 select distinct a from t0
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connection con1;
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a
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0
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1
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2
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3
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4
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5
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6
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7
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8
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9
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SET debug_dbug=@old_debug;
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drop table t0,t1;
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#
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# MDEV-28124: Server crashes in Explain_aggr_filesort::print_json_members
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# upon SHOW ANALYZE/EXPLAIN FORMAT=JSON
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#
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connection con1;
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set @show_explain_probe_query= 'SELECT count(*) - count(*) FROM sys.waits_by_user_by_latency';
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set debug_dbug='+d,explain_notify_tables_are_closed';
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SELECT count(*) - count(*) FROM sys.waits_by_user_by_latency;
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connection default;
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SHOW ANALYZE FOR $thr2;
|
|
ERROR HY000: Target is not executing an operation with a query plan
|
|
connection con1;
|
|
count(*) - count(*)
|
|
0
|
|
# End
|
|
connection default;
|
|
disconnect con1;
|
|
set debug_sync='RESET';
|
|
#
|
|
# MDEV-28201: Server crashes upon SHOW ANALYZE/EXPLAIN FORMAT=JSON
|
|
#
|
|
CREATE TABLE t1 ( a varchar(1));
|
|
INSERT INTO t1 VALUES ('a'),('b');
|
|
ANALYZE format=json
|
|
SELECT 1 FROM t1 GROUP BY convert_tz('1969-12-31 22:00:00',a,'+10:00');
|
|
ANALYZE
|
|
{
|
|
"query_optimization": {
|
|
"r_total_time_ms": "REPLACED"
|
|
},
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"filesort": {
|
|
"sort_key": "convert_tz('1969-12-31 22:00:00',t1.a,'+10:00')",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"r_used_priority_queue": false,
|
|
"r_output_rows": 1,
|
|
"r_buffer_size": "REPLACED",
|
|
"r_sort_mode": "sort_key,rowid",
|
|
"temporary_table": {
|
|
"nested_loop": [
|
|
{
|
|
"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;
|
|
#
|
|
# MDEV-31432 tmp_table field accessed after free
|
|
# testing for the above (MDEV-28201) caused use after free error
|
|
#
|
|
create table t1 (x int) engine=myisam;
|
|
insert into t1 values(1);
|
|
set @tmp=@@optimizer_trace;
|
|
set @@optimizer_trace=1;
|
|
SELECT
|
|
1 IN
|
|
((
|
|
SELECT
|
|
1 IN (SELECT 1 AS x0
|
|
FROM
|
|
(
|
|
SELECT *
|
|
FROM (SELECT 1 AS x) AS x5
|
|
GROUP BY x,x
|
|
HAVING
|
|
x IN (
|
|
SELECT *
|
|
FROM t1 AS x1
|
|
WHERE
|
|
x IN (SELECT 1 AS x
|
|
FROM t1 AS x3
|
|
GROUP BY x
|
|
HAVING
|
|
x IN (SELECT 0 FROM t1 AS x4)
|
|
)
|
|
)
|
|
) AS x6
|
|
)
|
|
FROM
|
|
t1
|
|
)) as VAL;
|
|
VAL
|
|
0
|
|
set optimizer_trace=@tmp;
|
|
drop table t1;
|