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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 27a9ab161a63050c84a63c6f77ebeb33 EXPLAIN SELECT * FROM `test` . `v1` 1
test ab0ab27c04f3a294feb86bede4331f86 EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test 2e722346a5c2ef820946bcd04ccac208 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test 07baf2264db30b6b25302603436ebe82 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 1
test 3a7dbc963635ab0de6e160e0a4212bce EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 1
test 6b845c2e3a7421997e3b610d14b5c842 SELECT * FROM `test` . `v1` 1
test cb2ee099edbf6e0e5ee6ae14f3b1498a SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test e2dc5a300d2ba54ebb987a2ca6b90d93 SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test c68e0f99323f7bb7732c7b5cf32c0ec2 SELECT `a` , `b` FROM `test` . `v1` 1
test 43c5de955c9a72d2bb6f49db5c0ad3e7 SELECT `b` , `a` FROM `test` . `v1` 1
test 1678258ba15f7ccc63fd7b833763914a 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 342cd5e41944d5f857f92b1e374857de CREATE VIEW `test` . `v1` AS SELECT * FROM `test` . `t1` 1
test 2653f30030efcb6125121daa8eadf418 DROP TABLE `test` . `v1` 1
test 27a9ab161a63050c84a63c6f77ebeb33 EXPLAIN SELECT * FROM `test` . `v1` 2
test ab0ab27c04f3a294feb86bede4331f86 EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test 2e722346a5c2ef820946bcd04ccac208 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test 07baf2264db30b6b25302603436ebe82 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 2
test 3a7dbc963635ab0de6e160e0a4212bce EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 2
test 6b845c2e3a7421997e3b610d14b5c842 SELECT * FROM `test` . `v1` 2
test cb2ee099edbf6e0e5ee6ae14f3b1498a SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test e2dc5a300d2ba54ebb987a2ca6b90d93 SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test a13cfeda6d474d29546719d76dcfa831 SELECT SCHEMA_NAME , `DIGEST` , `DIGEST_TEXT` , `COUNT_STAR` FROM `performance_schema` . `events_statements_summary_by_digest` ORDER BY `DIGEST_TEXT` 1
test c68e0f99323f7bb7732c7b5cf32c0ec2 SELECT `a` , `b` FROM `test` . `v1` 2
test 43c5de955c9a72d2bb6f49db5c0ad3e7 SELECT `b` , `a` FROM `test` . `v1` 2
test 1678258ba15f7ccc63fd7b833763914a TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1
DROP VIEW test.v1;
DROP TABLE test.t1;
|
