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CREATE TABLE test.v1 (a int, b int);
INSERT INTO test.v1 VALUES (1, 100), (2, 200), (3, 300);
CREATE TABLE test.t1 (a int, b int);
INSERT INTO test.t1 VALUES (1, 100), (2, 200), (3, 300);
TRUNCATE TABLE performance_schema.events_statements_summary_by_digest;
EXPLAIN EXTENDED SELECT * from test.v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select `test`.`v1`.`a` AS `a`,`test`.`v1`.`b` AS `b` from `test`.`v1`
EXPLAIN EXTENDED SELECT * from test.v1 where a = 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select `test`.`v1`.`a` AS `a`,`test`.`v1`.`b` AS `b` from `test`.`v1` where `test`.`v1`.`a` = 1
EXPLAIN EXTENDED SELECT * from test.v1 where b > 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select `test`.`v1`.`a` AS `a`,`test`.`v1`.`b` AS `b` from `test`.`v1` where `test`.`v1`.`b` > 100
EXPLAIN EXTENDED SELECT a, b from test.v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select `test`.`v1`.`a` AS `a`,`test`.`v1`.`b` AS `b` from `test`.`v1`
EXPLAIN EXTENDED SELECT b, a from test.v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select `test`.`v1`.`b` AS `b`,`test`.`v1`.`a` AS `a` from `test`.`v1`
SELECT * from test.v1;
a b
1 100
2 200
3 300
SELECT * from test.v1 where a = 1;
a b
1 100
SELECT * from test.v1 where b > 100;
a b
2 200
3 300
SELECT a, b from test.v1;
a b
1 100
2 200
3 300
SELECT b, a from test.v1;
b a
100 1
200 2
300 3
#
# DIGESTS SEEN ON TABLE
#
SELECT SCHEMA_NAME, DIGEST_TEXT, COUNT_STAR
FROM performance_schema.events_statements_summary_by_digest
ORDER BY DIGEST_TEXT;
SCHEMA_NAME DIGEST_TEXT COUNT_STAR
test EXPLAIN EXTENDED SELECT * FROM `test` . `v1` 1
test EXPLAIN EXTENDED SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test EXPLAIN EXTENDED SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test EXPLAIN EXTENDED SELECT `a` , `b` FROM `test` . `v1` 1
test EXPLAIN EXTENDED SELECT `b` , `a` FROM `test` . `v1` 1
test SELECT * FROM `test` . `v1` 1
test SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test SELECT `a` , `b` FROM `test` . `v1` 1
test SELECT `b` , `a` FROM `test` . `v1` 1
test SHOW WARNINGS 5
test TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1
DROP TABLE test.v1;
CREATE VIEW test.v1 AS SELECT * FROM test.t1;
EXPLAIN EXTENDED SELECT * from test.v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`
EXPLAIN EXTENDED SELECT * from test.v1 where a = 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` = 1
EXPLAIN EXTENDED SELECT * from test.v1 where b > 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` > 100
EXPLAIN EXTENDED SELECT a, b from test.v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`
EXPLAIN EXTENDED SELECT b, a from test.v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t1`.`a` AS `a` from `test`.`t1`
SELECT * from test.v1;
a b
1 100
2 200
3 300
SELECT * from test.v1 where a = 1;
a b
1 100
SELECT * from test.v1 where b > 100;
a b
2 200
3 300
SELECT a, b from test.v1;
a b
1 100
2 200
3 300
SELECT b, a from test.v1;
b a
100 1
200 2
300 3
#
# DIGESTS SEEN ON VIEW
#
SELECT SCHEMA_NAME, DIGEST_TEXT, COUNT_STAR
FROM performance_schema.events_statements_summary_by_digest
ORDER BY DIGEST_TEXT;
SCHEMA_NAME DIGEST_TEXT COUNT_STAR
test CREATE VIEW `test` . `v1` AS SELECT * FROM `test` . `t1` 1
test DROP TABLE `test` . `v1` 1
test EXPLAIN EXTENDED SELECT * FROM `test` . `v1` 2
test EXPLAIN EXTENDED SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test EXPLAIN EXTENDED SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test EXPLAIN EXTENDED SELECT `a` , `b` FROM `test` . `v1` 2
test EXPLAIN EXTENDED SELECT `b` , `a` FROM `test` . `v1` 2
test SELECT * FROM `test` . `v1` 2
test SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test SELECT SCHEMA_NAME , `DIGEST_TEXT` , `COUNT_STAR` FROM `performance_schema` . `events_statements_summary_by_digest` ORDER BY `DIGEST_TEXT` 1
test SELECT `a` , `b` FROM `test` . `v1` 2
test SELECT `b` , `a` FROM `test` . `v1` 2
test SHOW WARNINGS 10
test TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1
DROP VIEW test.v1;
DROP TABLE test.t1;
CREATE TABLE test.v1 (a int, b int);
INSERT INTO test.v1 VALUES (1, 100), (2, 200), (3, 300);
CREATE TABLE test.t1 (a int, b int);
INSERT INTO test.t1 VALUES (1, 100), (2, 200), (3, 300);
TRUNCATE TABLE performance_schema.events_statements_summary_by_digest;
EXPLAIN SELECT * from test.v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3
EXPLAIN SELECT * from test.v1 where a = 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN SELECT * from test.v1 where b > 100;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN SELECT a, b from test.v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3
EXPLAIN SELECT b, a from test.v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE v1 ALL NULL NULL NULL NULL 3
SELECT * from test.v1;
a b
1 100
2 200
3 300
SELECT * from test.v1 where a = 1;
a b
1 100
SELECT * from test.v1 where b > 100;
a b
2 200
3 300
SELECT a, b from test.v1;
a b
1 100
2 200
3 300
SELECT b, a from test.v1;
b a
100 1
200 2
300 3
#
# DIGESTS SEEN ON TABLE
#
SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR
FROM performance_schema.events_statements_summary_by_digest
ORDER BY DIGEST_TEXT;
SCHEMA_NAME DIGEST DIGEST_TEXT COUNT_STAR
test 37dea8f84aac346903b2a7458f5a205c EXPLAIN SELECT * FROM `test` . `v1` 1
test a315952945621324a6bfcf1f6661bc1f EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test 1330b191a5d215acdf8d0b735ec6f336 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test a337bc71da7c8fbc66b6de7512427352 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 1
test 0b41d635fa372446c43c91e2aff21566 EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 1
test 2bc3eac48624171b6b2fb16df6a5bbea SELECT * FROM `test` . `v1` 1
test 71eee1f484086701a377431beee4964f SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test f9fc1d70334997a0d84ae02de912fc3b SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test 51eb6f80b8fc7e42278d2ef05338f9c6 SELECT `a` , `b` FROM `test` . `v1` 1
test ba48024b5bd0a5bf03ae8e2593f7a8b3 SELECT `b` , `a` FROM `test` . `v1` 1
test ce479a0a1fd4bd47717f1c9082833700 TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1
DROP TABLE test.v1;
CREATE VIEW test.v1 AS SELECT * FROM test.t1;
EXPLAIN SELECT * from test.v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
EXPLAIN SELECT * from test.v1 where a = 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN SELECT * from test.v1 where b > 100;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
EXPLAIN SELECT a, b from test.v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
EXPLAIN SELECT b, a from test.v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
SELECT * from test.v1;
a b
1 100
2 200
3 300
SELECT * from test.v1 where a = 1;
a b
1 100
SELECT * from test.v1 where b > 100;
a b
2 200
3 300
SELECT a, b from test.v1;
a b
1 100
2 200
3 300
SELECT b, a from test.v1;
b a
100 1
200 2
300 3
#
# DIGESTS SEEN ON VIEW
#
SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR
FROM performance_schema.events_statements_summary_by_digest
ORDER BY DIGEST_TEXT;
SCHEMA_NAME DIGEST DIGEST_TEXT COUNT_STAR
test 441b9375dc36ec4fe7044966d0bf1c1b CREATE VIEW `test` . `v1` AS SELECT * FROM `test` . `t1` 1
test c14613cf8c7cb5f85c64f82e45ae95d6 DROP TABLE `test` . `v1` 1
test 37dea8f84aac346903b2a7458f5a205c EXPLAIN SELECT * FROM `test` . `v1` 2
test a315952945621324a6bfcf1f6661bc1f EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test 1330b191a5d215acdf8d0b735ec6f336 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test a337bc71da7c8fbc66b6de7512427352 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 2
test 0b41d635fa372446c43c91e2aff21566 EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 2
test 2bc3eac48624171b6b2fb16df6a5bbea SELECT * FROM `test` . `v1` 2
test 71eee1f484086701a377431beee4964f SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test f9fc1d70334997a0d84ae02de912fc3b SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test 8dd5015809dfc2fef20ff7fb96288bf4 SELECT SCHEMA_NAME , `DIGEST` , `DIGEST_TEXT` , `COUNT_STAR` FROM `performance_schema` . `events_statements_summary_by_digest` ORDER BY `DIGEST_TEXT` 1
test 51eb6f80b8fc7e42278d2ef05338f9c6 SELECT `a` , `b` FROM `test` . `v1` 2
test ba48024b5bd0a5bf03ae8e2593f7a8b3 SELECT `b` , `a` FROM `test` . `v1` 2
test ce479a0a1fd4bd47717f1c9082833700 TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1
DROP VIEW test.v1;
DROP TABLE test.t1;
|
