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MDEV-27021 Implement SHOW ANALYZE command
This commit is contained in:
Oleg Smirnov
committed by
Sergei Petrunia
Sergei Petrunia
parent
328684833b
commit
e7fcd496d4
379
mysql-test/main/show_analyze.result
Normal file
379
mysql-test/main/show_analyze.result
Normal file
@ -0,0 +1,379 @@
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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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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 59.38 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 10.16 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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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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set @foo= (select max(a) from t0 where sin(a) >0);
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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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#
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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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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"
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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
|
||||
3
|
||||
4
|
||||
5
|
||||
6
|
||||
7
|
||||
8
|
||||
9
|
||||
SET debug_dbug=@old_debug;
|
||||
drop table t0,t1;
|
||||
# End
|
||||
connection default;
|
||||
disconnect con1;
|
||||
set debug_sync='RESET';
|
||||
332
mysql-test/main/show_analyze.test
Normal file
332
mysql-test/main/show_analyze.test
Normal file
@ -0,0 +1,332 @@
|
||||
#
|
||||
# Tests for SHOW ANALYZE FOR functionality
|
||||
#
|
||||
--source include/have_debug.inc
|
||||
--source include/have_debug_sync.inc
|
||||
--source include/have_innodb.inc
|
||||
# Using valgrind can cause 'reap' to fail. See comment below
|
||||
--source include/not_valgrind.inc
|
||||
|
||||
--disable_warnings
|
||||
drop table if exists t0, t1, t2, t3, t4;
|
||||
drop view if exists v1;
|
||||
--enable_warnings
|
||||
SET @old_debug= @@session.debug;
|
||||
|
||||
#
|
||||
# Testcases in this file do not work with embedded server. The reason for this
|
||||
# is that we use the following commands for synchronization:
|
||||
#
|
||||
# set @show_explain_probe_select_id=1;
|
||||
# SET debug_dbug='d,show_explain_probe_join_exec_start';
|
||||
# send select count(*) from t1 where a < 100000;
|
||||
#
|
||||
# When ran with mysqltest_embedded, this translates into:
|
||||
#
|
||||
# Thread1> DBUG_PUSH("d,show_explain_probe_join_exec_start");
|
||||
# Thread1> create another thread for doing "send ... reap"
|
||||
# Thread2> mysql_parse("select count(*) from t1 where a < 100000");
|
||||
#
|
||||
# That is, "select count(*) ..." is ran in a thread for which DBUG_PUSH(...)
|
||||
# has not been called. As a result, show_explain_probe_join_exec_start does not fire, and
|
||||
# "select count(*) ..." does not wait till its SHOW ANALYZE command, and the
|
||||
# test fails.
|
||||
#
|
||||
-- source include/not_embedded.inc
|
||||
|
||||
set debug_sync='RESET';
|
||||
|
||||
create table t0 (a int);
|
||||
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
||||
create table t1 (a int);
|
||||
alter table t1 add b int, add c int, add filler char(32);
|
||||
insert into t1 select A.a, 10*B.a, 100*C.a, 'foo filler' from t0 A, t0 B, t0 C;
|
||||
alter table t1 add key(a), add key(b);
|
||||
analyze table t1;
|
||||
|
||||
#
|
||||
# Try SHOW ANALYZE for a non-existent thread
|
||||
#
|
||||
--error ER_NO_SUCH_THREAD
|
||||
show analyze for 1001;
|
||||
|
||||
--error ER_SET_CONSTANTS_ONLY
|
||||
show analyze for (select a from t0 limit 1);
|
||||
|
||||
#
|
||||
# Setup two threads and their ids
|
||||
#
|
||||
let $thr1=`select connection_id()`;
|
||||
connect (con1, localhost, root,,);
|
||||
connection con1;
|
||||
let $thr2=`select connection_id()`;
|
||||
SET @old_debug= @@session.debug;
|
||||
connection default;
|
||||
|
||||
# SHOW ANALYZE FOR <idle thread>
|
||||
--error ER_TARGET_NOT_EXPLAINABLE
|
||||
evalp show analyze for $thr2;
|
||||
|
||||
# SHOW ANALYZE FOR <ourselves>
|
||||
--error ER_TARGET_NOT_EXPLAINABLE
|
||||
evalp show analyze for $thr1;
|
||||
|
||||
let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;
|
||||
|
||||
#
|
||||
# Test SHOW ANALYZE for simple queries
|
||||
#
|
||||
connection con1;
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send select count(*) from t1 where c < 500;
|
||||
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
|
||||
|
||||
send select max(c) from t1 where c < 10;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
|
||||
|
||||
--echo # We can catch ANALYZE too.
|
||||
send analyze select max(c) from t1 where a < 10;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # UNION, select, first branch
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
|
||||
|
||||
--echo # UNION, select, second branch
|
||||
set @show_explain_probe_select_id=2; # <--- Second branch
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send select max(a) from t0 A where a<=5 union select max(a+1) from t0 B where a>=9;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
|
||||
|
||||
--echo # UNION, analyze, first branch
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
|
||||
|
||||
--echo # UNION, analyze, second branch
|
||||
set @show_explain_probe_select_id=2;
|
||||
send analyze select a from t0 A where a<=5 union select a+1 from t0 B where a>=9;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # Uncorrelated subquery, select
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # Uncorrelated subquery, analyze
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send analyze select a, (select max(a) from t0 B where a>6) from t0 A where a<2;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # correlated subquery, select, before execution start
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
send select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # correlated subquery, select, after execution
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # correlated subquery, analyze
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
send analyze select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<2;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo # Try to do SHOW ANALYZE for a query that runs a SET command:
|
||||
--echo #
|
||||
set @show_explain_probe_select_id=2; # <---
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
send set @foo= (select max(a) from t0 where sin(a) >0);
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
--error ER_TARGET_NOT_EXPLAINABLE
|
||||
evalp show analyze for $thr2;
|
||||
evalp kill query $thr2;
|
||||
connection con1;
|
||||
--error ER_QUERY_INTERRUPTED
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo #
|
||||
--echo # Attempt SHOW ANALYZE for an UPDATE
|
||||
--echo #
|
||||
create table t2 as select a as a, a as dummy from t0 limit 2;
|
||||
set @show_explain_probe_select_id=2;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
send update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
drop table t2;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo #
|
||||
--echo # Attempt SHOW ANALYZE for a DELETE
|
||||
--echo #
|
||||
create table t2 as select a as a, a as dummy from t0 limit 2;
|
||||
set @show_explain_probe_select_id=2;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
send delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
drop table t2;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo #
|
||||
--echo # Multiple SHOW ANALYZE calls for one select
|
||||
--echo #
|
||||
create table t2 as select a as a, a as dummy from t0 limit 3;
|
||||
set @show_explain_probe_select_id=2;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
send select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
drop table t2;
|
||||
|
||||
|
||||
--echo #
|
||||
--echo # SHOW ANALYZE for SELECT ... ORDER BY with "Using filesort"
|
||||
--echo #
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
set @show_explain_probe_select_id=1;
|
||||
send select * from t0 order by a;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo #
|
||||
--echo # SHOW ANALYZE for SELECT ... with "Using temporary"
|
||||
--echo #
|
||||
connection con1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
set @show_explain_probe_select_id=1;
|
||||
send select distinct a from t0;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
--echo #
|
||||
--echo # SHOW ANALYZE for SELECT ... with "Using temporary; Using filesort"
|
||||
--echo #
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
set @show_explain_probe_select_id=1;
|
||||
send select distinct a from t0;
|
||||
connection default;
|
||||
--source include/wait_condition.inc
|
||||
evalp show analyze for $thr2;
|
||||
connection con1;
|
||||
reap;
|
||||
SET debug_dbug=@old_debug;
|
||||
|
||||
|
||||
drop table t0,t1;
|
||||
--echo # End
|
||||
connection default;
|
||||
disconnect con1;
|
||||
set debug_sync='RESET';
|
||||
@ -26,13 +26,13 @@ connection con1;
|
||||
SET @old_debug= @@session.debug;
|
||||
connection default;
|
||||
show explain for $thr2;
|
||||
ERROR HY000: Target is not running an EXPLAINable command
|
||||
ERROR HY000: Target is not executing an operation with a query plan
|
||||
explain for connection $thr2;
|
||||
ERROR HY000: Target is not running an EXPLAINable command
|
||||
ERROR HY000: Target is not executing an operation with a query plan
|
||||
show explain for $thr1;
|
||||
ERROR HY000: Target is not running an EXPLAINable command
|
||||
ERROR HY000: Target is not executing an operation with a query plan
|
||||
explain for connection $thr1;
|
||||
ERROR HY000: Target is not running an EXPLAINable command
|
||||
ERROR HY000: Target is not executing an operation with a query plan
|
||||
connection con1;
|
||||
set @show_explain_probe_select_id=1;
|
||||
SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
@ -248,7 +248,7 @@ SET debug_dbug='+d,show_explain_probe_join_exec_start';
|
||||
set @foo= (select max(a) from t0 where sin(a) >0);
|
||||
connection default;
|
||||
show explain for $thr2;
|
||||
ERROR HY000: Target is not running an EXPLAINable command
|
||||
ERROR HY000: Target is not executing an operation with a query plan
|
||||
kill query $thr2;
|
||||
connection con1;
|
||||
ERROR 70100: Query execution was interrupted
|
||||
@ -572,7 +572,7 @@ SET debug_dbug='+d,show_explain_probe_join_exec_end';
|
||||
SELECT * FROM v1, t2;
|
||||
connection default;
|
||||
show explain for $thr2;
|
||||
ERROR HY000: Target is not running an EXPLAINable command
|
||||
ERROR HY000: Target is not executing an operation with a query plan
|
||||
kill query $thr2;
|
||||
connection con1;
|
||||
ERROR 70100: Query execution was interrupted
|
||||
|
||||
@ -1025,6 +1025,7 @@ enum enum_schema_tables
|
||||
SCH_EVENTS,
|
||||
SCH_EXPLAIN_TABULAR,
|
||||
SCH_EXPLAIN_JSON,
|
||||
SCH_ANALYZE,
|
||||
SCH_FILES,
|
||||
SCH_GLOBAL_STATUS,
|
||||
SCH_GLOBAL_VARIABLES,
|
||||
|
||||
@ -3507,6 +3507,7 @@ SHOW_VAR com_status_vars[]= {
|
||||
{"show_errors", STMT_STATUS(SQLCOM_SHOW_ERRORS)},
|
||||
{"show_events", STMT_STATUS(SQLCOM_SHOW_EVENTS)},
|
||||
{"show_explain", STMT_STATUS(SQLCOM_SHOW_EXPLAIN)},
|
||||
{"show_analyze", STMT_STATUS(SQLCOM_SHOW_ANALYZE)},
|
||||
{"show_fields", STMT_STATUS(SQLCOM_SHOW_FIELDS)},
|
||||
#ifndef DBUG_OFF
|
||||
{"show_function_code", STMT_STATUS(SQLCOM_SHOW_FUNC_CODE)},
|
||||
|
||||
@ -634,6 +634,7 @@ constexpr privilege_t PRIV_STMT_DROP_SERVER= FEDERATED_ADMIN_ACL | SUPER_ACL;
|
||||
|
||||
/* Privileges related to processes */
|
||||
constexpr privilege_t PRIV_COM_PROCESS_INFO= PROCESS_ACL;
|
||||
// This privilege applies both for SHOW EXPLAIN and SHOW ANALYZE
|
||||
constexpr privilege_t PRIV_STMT_SHOW_EXPLAIN= PROCESS_ACL;
|
||||
constexpr privilege_t PRIV_STMT_SHOW_ENGINE_STATUS= PROCESS_ACL;
|
||||
constexpr privilege_t PRIV_STMT_SHOW_ENGINE_MUTEX= PROCESS_ACL;
|
||||
|
||||
@ -8725,9 +8725,9 @@ ER_NO_SUCH_TABLE_IN_ENGINE 42S02
|
||||
spa "La tabla '%-.192s.%-.192s' no existe en el motor"
|
||||
swe "Det finns ingen tabell som heter '%-.192s.%-.192s' i handlern"
|
||||
ER_TARGET_NOT_EXPLAINABLE
|
||||
eng "Target is not executing an operation with a query plan"
|
||||
chi "目标未运行可解释的命令"
|
||||
eng "Target is not running an EXPLAINable command"
|
||||
spa "El objetivo no está ejecutando un comando EXPLAINable"
|
||||
spa "El objetivo no está ejecutando una operación con un plan de consulta (query)"
|
||||
ER_CONNECTION_ALREADY_EXISTS
|
||||
chi "连接'%.*s'与现有连接'%.*s'冲突"
|
||||
eng "Connection '%.*s' conflicts with existing connection '%.*s'"
|
||||
|
||||
@ -221,6 +221,7 @@ sp_get_flags_for_command(LEX *lex)
|
||||
case SQLCOM_SHOW_DATABASES:
|
||||
case SQLCOM_SHOW_ERRORS:
|
||||
case SQLCOM_SHOW_EXPLAIN:
|
||||
case SQLCOM_SHOW_ANALYZE:
|
||||
case SQLCOM_SHOW_FIELDS:
|
||||
case SQLCOM_SHOW_FUNC_CODE:
|
||||
case SQLCOM_SHOW_GENERIC:
|
||||
|
||||
@ -88,7 +88,8 @@ enum enum_sql_command {
|
||||
SQLCOM_SHOW_RELAYLOG_EVENTS,
|
||||
SQLCOM_GET_DIAGNOSTICS,
|
||||
SQLCOM_SLAVE_ALL_START, SQLCOM_SLAVE_ALL_STOP,
|
||||
SQLCOM_SHOW_EXPLAIN, SQLCOM_SHUTDOWN,
|
||||
SQLCOM_SHOW_EXPLAIN,
|
||||
SQLCOM_SHOW_ANALYZE, SQLCOM_SHUTDOWN,
|
||||
SQLCOM_CREATE_ROLE, SQLCOM_DROP_ROLE, SQLCOM_GRANT_ROLE, SQLCOM_REVOKE_ROLE,
|
||||
SQLCOM_COMPOUND,
|
||||
SQLCOM_SHOW_GENERIC,
|
||||
|
||||
@ -665,6 +665,7 @@ void init_update_queries(void)
|
||||
sql_command_flags[SQLCOM_SHOW_ENGINE_MUTEX]= CF_STATUS_COMMAND;
|
||||
sql_command_flags[SQLCOM_SHOW_ENGINE_LOGS]= CF_STATUS_COMMAND;
|
||||
sql_command_flags[SQLCOM_SHOW_EXPLAIN]= CF_STATUS_COMMAND;
|
||||
sql_command_flags[SQLCOM_SHOW_ANALYZE]= CF_STATUS_COMMAND;
|
||||
sql_command_flags[SQLCOM_SHOW_PROCESSLIST]= CF_STATUS_COMMAND;
|
||||
sql_command_flags[SQLCOM_SHOW_GRANTS]= CF_STATUS_COMMAND;
|
||||
sql_command_flags[SQLCOM_SHOW_CREATE_USER]= CF_STATUS_COMMAND;
|
||||
@ -3879,6 +3880,7 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt)
|
||||
break;
|
||||
}
|
||||
case SQLCOM_SHOW_EXPLAIN:
|
||||
case SQLCOM_SHOW_ANALYZE:
|
||||
{
|
||||
if (!thd->security_ctx->priv_user[0] &&
|
||||
check_global_access(thd, PRIV_STMT_SHOW_EXPLAIN))
|
||||
|
||||
@ -3000,8 +3000,8 @@ void Show_explain_request::call_in_target_thread()
|
||||
DBUG_ASSERT(current_thd == target_thd);
|
||||
set_current_thd(request_thd);
|
||||
if (target_thd->lex->print_explain(explain_buf, 0 /* explain flags*/,
|
||||
false /*TODO: analyze? */,
|
||||
is_json_format, &printed_anything))
|
||||
is_analyze, is_json_format,
|
||||
&printed_anything))
|
||||
{
|
||||
failed_to_produce= TRUE;
|
||||
}
|
||||
@ -3119,16 +3119,16 @@ void select_result_text_buffer::save_to(String *res)
|
||||
|
||||
|
||||
/*
|
||||
Store the SHOW EXPLAIN output in the temporary table.
|
||||
Store the SHOW EXPLAIN/SHOW ANALYZE output in the temporary table.
|
||||
*/
|
||||
|
||||
int fill_show_explain(THD *thd, TABLE_LIST *table, COND *cond,
|
||||
bool json_format)
|
||||
int fill_show_explain_or_analyze(THD *thd, TABLE_LIST *table, COND *cond,
|
||||
bool json_format, bool is_analyze)
|
||||
{
|
||||
const char *calling_user;
|
||||
THD *tmp;
|
||||
my_thread_id thread_id;
|
||||
DBUG_ENTER("fill_show_explain");
|
||||
DBUG_ENTER("fill_show_explain_or_analyze");
|
||||
|
||||
DBUG_ASSERT(cond==NULL);
|
||||
thread_id= thd->lex->value_list.head()->val_int();
|
||||
@ -3140,10 +3140,10 @@ int fill_show_explain(THD *thd, TABLE_LIST *table, COND *cond,
|
||||
Security_context *tmp_sctx= tmp->security_ctx;
|
||||
/*
|
||||
If calling_user==NULL, calling thread has SUPER or PROCESS
|
||||
privilege, and so can do SHOW EXPLAIN on any user.
|
||||
privilege, and so can do SHOW EXPLAIN/SHOW ANALYZE on any user.
|
||||
|
||||
if calling_user!=NULL, he's only allowed to view SHOW EXPLAIN on
|
||||
his own threads.
|
||||
if calling_user!=NULL, he's only allowed to view
|
||||
SHOW EXPLAIN/SHOW ANALYZE on his own threads.
|
||||
*/
|
||||
if (calling_user && (!tmp_sctx->user || strcmp(calling_user,
|
||||
tmp_sctx->user)))
|
||||
@ -3163,7 +3163,7 @@ int fill_show_explain(THD *thd, TABLE_LIST *table, COND *cond,
|
||||
bool bres;
|
||||
/*
|
||||
Ok we've found the thread of interest and it won't go away because
|
||||
we're holding its LOCK_thd_kill. Post it a SHOW EXPLAIN request.
|
||||
we're holding its LOCK_thd_kill. Post it a SHOW EXPLAIN/SHOW ANALYZE request.
|
||||
*/
|
||||
bool timed_out;
|
||||
int timeout_sec= 30;
|
||||
@ -3173,6 +3173,7 @@ int fill_show_explain(THD *thd, TABLE_LIST *table, COND *cond,
|
||||
|
||||
explain_buf= new select_result_explain_buffer(thd, table->table);
|
||||
|
||||
explain_req.is_analyze= is_analyze;
|
||||
explain_req.explain_buf= explain_buf;
|
||||
explain_req.target_thd= tmp;
|
||||
explain_req.request_thd= thd;
|
||||
@ -3233,13 +3234,28 @@ int fill_show_explain(THD *thd, TABLE_LIST *table, COND *cond,
|
||||
|
||||
int fill_show_explain_tabular(THD *thd, TABLE_LIST *table, COND *cond)
|
||||
{
|
||||
return fill_show_explain(thd, table, cond, false /*json_format*/);
|
||||
return fill_show_explain_or_analyze(
|
||||
thd, table, cond, FALSE /* json_format */, FALSE /* is_analyze */);
|
||||
}
|
||||
|
||||
|
||||
int fill_show_explain_json(THD *thd, TABLE_LIST *table, COND *cond)
|
||||
{
|
||||
return fill_show_explain(thd, table, cond, true /*json_format*/);
|
||||
return fill_show_explain_or_analyze(
|
||||
thd, table, cond, TRUE /* json_format */, TRUE /* is_analyze */);
|
||||
|
||||
|
||||
int fill_show_analyze_tabular(THD * thd, TABLE_LIST * table, COND * cond)
|
||||
{
|
||||
return fill_show_explain_or_analyze(
|
||||
thd, table, cond, FALSE /* json_format */, TRUE /* is_analyze */);
|
||||
}
|
||||
|
||||
|
||||
int fill_show_analyze_json(THD * thd, TABLE_LIST * table, COND * cond)
|
||||
{
|
||||
return fill_show_explain_or_analyze(
|
||||
thd, table, cond, TRUE /* json_format */, TRUE /* is_analyze */);
|
||||
}
|
||||
|
||||
|
||||
@ -9660,6 +9676,29 @@ ST_FIELD_INFO show_explain_json_fields_info[]=
|
||||
};
|
||||
|
||||
|
||||
ST_FIELD_INFO show_analyze_fields_info[]=
|
||||
{
|
||||
Column("id", SLonglong(3), NULLABLE, "id"),
|
||||
Column("select_type", Varchar(19), NOT_NULL, "select_type"),
|
||||
Column("table", Name(), NULLABLE, "table"),
|
||||
Column("type", Varchar(15), NULLABLE, "type"),
|
||||
Column("possible_keys",Varchar(NAME_CHAR_LEN*MAX_KEY), NULLABLE, "possible_keys"),
|
||||
Column("key", Varchar(NAME_CHAR_LEN*MAX_KEY), NULLABLE, "key"),
|
||||
Column("key_len", Varchar(NAME_CHAR_LEN*MAX_KEY), NULLABLE, "key_len"),
|
||||
Column("ref", Varchar(NAME_CHAR_LEN*MAX_REF_PARTS),NULLABLE, "ref"),
|
||||
Column("rows", SLonglong(10), NULLABLE, "rows"),
|
||||
Column("r_rows", Varchar(NAME_CHAR_LEN), NULLABLE, "r_rows"),
|
||||
|
||||
/* Fields of type DECIMAL(5,2) to represent percentage.
|
||||
See Show::Type::decimal_precision() and Show::Type::decimal_scale() to learn
|
||||
how 502 converts to precision and scale (5 and 2)*/
|
||||
Column("filtered", Decimal(502), NULLABLE, "filtered"),
|
||||
Column("r_filtered", Decimal(502), NULLABLE, "r_filtered"),
|
||||
Column("Extra", Varchar(255), NOT_NULL, "Extra"),
|
||||
CEnd()
|
||||
};
|
||||
|
||||
|
||||
ST_FIELD_INFO check_constraints_fields_info[]=
|
||||
{
|
||||
Column("CONSTRAINT_CATALOG", Catalog(), NOT_NULL, OPEN_FULL_TABLE),
|
||||
@ -9724,6 +9763,8 @@ ST_SCHEMA_TABLE schema_tables[]=
|
||||
make_old_format, 0, -1, -1, TRUE /*hidden*/ , 0},
|
||||
{"EXPLAIN_JSON", Show::show_explain_json_fields_info, 0, fill_show_explain_json,
|
||||
make_old_format, 0, -1, -1, TRUE /*hidden*/, 0},
|
||||
{"ANALYZE", Show::show_analyze_fields_info, 0, fill_show_analyze_tabular,
|
||||
make_old_format, 0, -1, -1, TRUE /*hidden*/, 0},
|
||||
{"FILES", Show::files_fields_info, 0,
|
||||
hton_fill_schema_table, 0, 0, -1, -1, 0, 0},
|
||||
{"GLOBAL_STATUS", Show::variables_fields_info, 0,
|
||||
|
||||
@ -155,14 +155,14 @@ THD *find_thread_by_id(longlong id, bool query_id= false);
|
||||
|
||||
class select_result_explain_buffer;
|
||||
/*
|
||||
SHOW EXPLAIN request object.
|
||||
SHOW EXPLAIN/SHOW ANALYZE request object.
|
||||
*/
|
||||
|
||||
class Show_explain_request : public Apc_target::Apc_call
|
||||
{
|
||||
public:
|
||||
THD *target_thd; /* thd that we're running SHOW EXPLAIN for */
|
||||
THD *request_thd; /* thd that run SHOW EXPLAIN command */
|
||||
THD *target_thd; /* thd that we're running SHOW EXPLAIN/ANALYZE for */
|
||||
THD *request_thd; /* thd that run SHOW EXPLAIN/ANALYZE command */
|
||||
|
||||
/*
|
||||
Set to TRUE if you need the result in JSON format,
|
||||
@ -170,19 +170,22 @@ public:
|
||||
*/
|
||||
bool is_json_format= false;
|
||||
|
||||
/* FALSE for SHOW EXPLAIN, TRUE - for SHOW ANALYZE*/
|
||||
bool is_analyze;
|
||||
|
||||
/* If true, there was some error when producing EXPLAIN output. */
|
||||
bool failed_to_produce;
|
||||
|
||||
/* SHOW EXPLAIN will be stored here */
|
||||
/* SHOW EXPLAIN/ANALYZE will be stored here */
|
||||
select_result_explain_buffer *explain_buf;
|
||||
|
||||
/* Query that we've got SHOW EXPLAIN for */
|
||||
/* Query that we've got SHOW EXPLAIN/ANALYZE for */
|
||||
String query_str;
|
||||
|
||||
/* Overloaded virtual function */
|
||||
void call_in_target_thread();
|
||||
void call_in_target_thread() override;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
Condition pushdown used for INFORMATION_SCHEMA / SHOW queries.
|
||||
This structure is to implement an optimization when
|
||||
|
||||
@ -13948,6 +13948,13 @@ show_param:
|
||||
MYSQL_YYABORT;
|
||||
add_value_to_list(thd, $4);
|
||||
}
|
||||
| ANALYZE_SYM FOR_SYM expr
|
||||
{
|
||||
Lex->sql_command= SQLCOM_SHOW_ANALYZE;
|
||||
if (unlikely(prepare_schema_table(thd, Lex, 0, SCH_ANALYZE)))
|
||||
MYSQL_YYABORT;
|
||||
add_value_to_list(thd, $3);
|
||||
}
|
||||
| IDENT_sys remember_tok_start wild_and_where
|
||||
{
|
||||
LEX *lex= Lex;
|
||||
|
||||
Reference in New Issue
Block a user