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413 lines
11 KiB
Text
413 lines
11 KiB
Text
#
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# Tests for SHOW ANALYZE FOR functionality
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#
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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--source include/have_innodb.inc
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--source include/have_perfschema.inc
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# Using valgrind can cause 'reap' to fail. See comment below
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--source include/not_valgrind.inc
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--disable_warnings
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drop table if exists t0, t1, t2, t3, t4;
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drop view if exists v1;
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--enable_warnings
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SET @old_debug= @@session.debug_dbug;
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#
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# Testcases in this file do not work with embedded server. The reason for this
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# is that we use the following commands for synchronization:
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#
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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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# send select count(*) from t1 where a < 100000;
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#
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# When ran with mysqltest_embedded, this translates into:
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#
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# Thread1> DBUG_PUSH("d,show_explain_probe_join_exec_start");
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# Thread1> create another thread for doing "send ... reap"
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# Thread2> mysql_parse("select count(*) from t1 where a < 100000");
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#
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# That is, "select count(*) ..." is ran in a thread for which DBUG_PUSH(...)
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# has not been called. As a result, show_explain_probe_join_exec_start does not fire, and
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# "select count(*) ..." does not wait till its SHOW ANALYZE command, and the
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# test fails.
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#
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-- source include/not_embedded.inc
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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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#
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# Try SHOW ANALYZE for a non-existent thread
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#
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--error ER_NO_SUCH_THREAD
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show analyze for 1001;
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--error ER_SET_CONSTANTS_ONLY
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show analyze for (select a from t0 limit 1);
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#
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# Setup two threads and their ids
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#
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let $thr1=`select connection_id()`;
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connect (con1, localhost, root,,);
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connection con1;
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let $thr2=`select connection_id()`;
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SET @old_debug= @@session.debug_dbug;
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connection default;
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# SHOW ANALYZE FOR <idle thread>
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--error ER_TARGET_NOT_EXPLAINABLE
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evalp show analyze for $thr2;
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# SHOW ANALYZE FOR <ourselves>
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--error ER_TARGET_NOT_EXPLAINABLE
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evalp show analyze for $thr1;
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let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;
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#
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# Test SHOW ANALYZE for simple queries
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#
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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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send select count(*) from t1 where c < 500;
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connection default;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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send select max(c) from t1 where c < 10;
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connection default;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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--echo # We can catch ANALYZE too.
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send analyze select max(c) from t1 where a < 10;
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connection default;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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--echo # UNION, select, second branch
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set @show_explain_probe_select_id=2; # <--- Second branch
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SET debug_dbug='+d,show_explain_probe_join_exec_end';
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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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--echo # UNION, analyze, second branch
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set @show_explain_probe_select_id=2;
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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # 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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo # Try to do SHOW ANALYZE for a query that runs a SET command:
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--echo #
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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; # Stop in the subquery.
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SET debug_dbug='+d,show_explain_probe_join_exec_start';
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# t2 has 2 rows so we will stop in the subquery twice:
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# - first one to serve the SHOW ANALYZE request
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# - second one when waiting to be KILLed.
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send 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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--source include/wait_condition.inc
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--error ER_TARGET_NOT_EXPLAINABLE
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evalp show analyze for $thr2;
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evalp kill query $thr2;
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connection con1;
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--error ER_QUERY_INTERRUPTED
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reap;
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SET debug_dbug=@old_debug;
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drop table t2;
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--echo #
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--echo # Attempt SHOW ANALYZE for an UPDATE
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--echo #
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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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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drop table t2;
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SET debug_dbug=@old_debug;
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--echo #
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--echo # Attempt SHOW ANALYZE for a DELETE
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--echo #
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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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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drop table t2;
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SET debug_dbug=@old_debug;
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--echo #
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--echo # Multiple SHOW ANALYZE calls for one select
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--echo #
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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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send 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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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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drop table t2;
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--echo #
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--echo # SHOW ANALYZE for SELECT ... ORDER BY with "Using filesort"
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--echo #
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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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send select * from t0 order by a;
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connection default;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo #
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--echo # SHOW ANALYZE for SELECT ... with "Using temporary"
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--echo #
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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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send select distinct a from t0;
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connection default;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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--echo #
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--echo # SHOW ANALYZE for SELECT ... with "Using temporary; Using filesort"
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--echo #
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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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send select distinct a from t0;
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connection default;
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--source include/wait_condition.inc
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evalp show analyze for $thr2;
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connection con1;
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reap;
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SET debug_dbug=@old_debug;
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drop table t0,t1;
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--echo #
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--echo # MDEV-28124: Server crashes in Explain_aggr_filesort::print_json_members
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--echo # upon SHOW ANALYZE/EXPLAIN FORMAT=JSON
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--echo #
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let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;
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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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# Statement guarantees to produce 0 on every run
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send SELECT count(*) - count(*) FROM sys.waits_by_user_by_latency;
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connection default;
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--source include/wait_condition.inc
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--error ER_TARGET_NOT_EXPLAINABLE
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evalp SHOW ANALYZE FOR $thr2;
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connection con1;
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reap;
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--echo # End
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connection default;
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disconnect con1;
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set debug_sync='RESET';
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--echo #
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--echo # MDEV-28201: Server crashes upon SHOW ANALYZE/EXPLAIN FORMAT=JSON
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--echo #
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CREATE TABLE t1 ( a varchar(1));
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INSERT INTO t1 VALUES ('a'),('b');
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--source include/analyze-format.inc
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ANALYZE format=json
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SELECT 1 FROM t1 GROUP BY convert_tz('1969-12-31 22:00:00',a,'+10:00');
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DROP TABLE t1;
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--echo #
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--echo # MDEV-31432 tmp_table field accessed after free
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--echo # testing for the above (MDEV-28201) caused use after free error
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--echo #
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create table t1 (x int) engine=myisam;
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insert into t1 values(1);
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set @tmp=@@optimizer_trace;
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set @@optimizer_trace=1;
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# Different warning text is produced in regular and --ps-protocol runs:
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--disable_warnings
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SELECT
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1 IN
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((
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SELECT
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1 IN (SELECT 1 AS x0
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FROM
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(
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SELECT *
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FROM (SELECT 1 AS x) AS x5
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GROUP BY x,x
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HAVING
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x IN (
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SELECT *
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FROM t1 AS x1
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WHERE
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x IN (SELECT 1 AS x
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FROM t1 AS x3
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GROUP BY x
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HAVING
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x IN (SELECT 0 FROM t1 AS x4)
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)
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)
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) AS x6
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)
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FROM
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t1
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)) as VAL;
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--enable_warnings
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set optimizer_trace=@tmp;
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drop table t1;
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