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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 883995051deb8c246585802cfd321a22 EXPLAIN SELECT * FROM `test` . `v1` 1
test 8e06c8f25266966ced26be5907ceb58f EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test 873c761bb3401ed8bdfe90d303202341 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test 58454d2c3bad0c990e97757f8affdff1 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 1
test 5759533b433f70d97df585e57aaeba49 EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 1
test d9abdc3309da734b3be65ee473d046ee SELECT * FROM `test` . `v1` 1
test 93fa57d3b0913e9b91896cdc73e2801d SELECT * FROM `test` . `v1` WHERE `a` = ? 1
test 98852870b265c7ff0cbfa3078163fc4d SELECT * FROM `test` . `v1` WHERE `b` > ? 1
test ef23ecdedb5da8f4e3a768ef4844f879 SELECT `a` , `b` FROM `test` . `v1` 1
test 4fb5c76cec0c3c0e9bae106499c582f9 SELECT `b` , `a` FROM `test` . `v1` 1
test 42a222de27801114b6d16e24ff22bc16 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 bc34bb436bf5034c4263b1ad23d90292 CREATE VIEW `test` . `v1` AS SELECT * FROM `test` . `t1` 1
test 869235446268944d0168011efd19fc9e DROP TABLE `test` . `v1` 1
test 883995051deb8c246585802cfd321a22 EXPLAIN SELECT * FROM `test` . `v1` 2
test 8e06c8f25266966ced26be5907ceb58f EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test 873c761bb3401ed8bdfe90d303202341 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test 58454d2c3bad0c990e97757f8affdff1 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 2
test 5759533b433f70d97df585e57aaeba49 EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 2
test d9abdc3309da734b3be65ee473d046ee SELECT * FROM `test` . `v1` 2
test 93fa57d3b0913e9b91896cdc73e2801d SELECT * FROM `test` . `v1` WHERE `a` = ? 2
test 98852870b265c7ff0cbfa3078163fc4d SELECT * FROM `test` . `v1` WHERE `b` > ? 2
test f06abe99801692e1a4acf36648376626 SELECT SCHEMA_NAME , `DIGEST` , `DIGEST_TEXT` , `COUNT_STAR` FROM `performance_schema` . `events_statements_summary_by_digest` ORDER BY `DIGEST_TEXT` 1
test ef23ecdedb5da8f4e3a768ef4844f879 SELECT `a` , `b` FROM `test` . `v1` 2
test 4fb5c76cec0c3c0e9bae106499c582f9 SELECT `b` , `a` FROM `test` . `v1` 2
test 42a222de27801114b6d16e24ff22bc16 TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1
DROP VIEW test.v1;
DROP TABLE test.t1;
|
