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MDEV-406: ANALYZE $stmt

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-Add analyze_stmt.test/result
This commit is contained in:
Sergei Petrunia 2014-05-27 20:16:51 +04:00
parent eaba1ba4a5
commit 0925ab9d88
2 changed files with 80 additions and 0 deletions
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49
mysql-test/r/analyze_stmt.result Normal file
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drop table if exists t0,t1,t2,t3;
create table t0 (a int) engine=myisam;
INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a int) engine=myisam;
INSERT INTO t1 select * from t0;
# Try a few basic selects to see that r_rows and r_filtered columns work
analyze select * from t1;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 10 100.00 100.00
analyze select * from t1 where a<5;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 10 100.00 50.00 Using where
analyze select * from t1 where a>100;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 10 100.00 0.00 Using where
# ANALYZE DELETE will delete rows:
analyze delete from t1 where a in (2,3,4);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 NULL 100.00 30.00 Using where
select * from t1;
a
0
1
5
6
7
8
9
drop table t1;
# ANALYZE UPDATE will make updates:
create table t1(a int, b int);
insert into t1 select a,a from t0;
analyze update t1 set b=100+b where a in (6,7,8);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 NULL 100.00 30.00 Using where
select * from t1;
a b
0 0
1 1
2 2
3 3
4 4
5 5
6 106
7 107
8 108
9 9
drop table t1;
drop table t0;

31
mysql-test/t/analyze_stmt.test Normal file
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#
# Tests for "ANALYZE $statement" feature (PostgreSQL's analog is called EXPLAIN ANALYZE)
#
--disable_warnings
drop table if exists t0,t1,t2,t3;
--enable_warnings
create table t0 (a int) engine=myisam;
INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a int) engine=myisam;
INSERT INTO t1 select * from t0;
--echo # Try a few basic selects to see that r_rows and r_filtered columns work
analyze select * from t1;
analyze select * from t1 where a<5;
analyze select * from t1 where a>100;
--echo # ANALYZE DELETE will delete rows:
analyze delete from t1 where a in (2,3,4);
select * from t1;
drop table t1;
--echo # ANALYZE UPDATE will make updates:
create table t1(a int, b int);
insert into t1 select a,a from t0;
analyze update t1 set b=100+b where a in (6,7,8);
select * from t1;
drop table t1;
drop table t0;