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 b69a5ddd08657692e23aa72d37dc15e0 EXPLAIN SELECT * FROM `test` . `v1` 1 test 8c76fc18fe1711607640be2906e38f58 EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 1 test 9bedc57de65e2ac25d67fcb6ccadb427 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 1 test 0539bbfdb016341a22d32fecb12c9882 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 1 test 3368b44e9d8b8cfb13b58f97a255d77f EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 1 test 2f619aeadc8bd993980ef9b4d12e4222 SELECT * FROM `test` . `v1` 1 test b9a44c024c9d79de76f2ebcd2f208c4c SELECT * FROM `test` . `v1` WHERE `a` = ? 1 test a3ccc4c3c79e853eaa17e3ceb7a24b30 SELECT * FROM `test` . `v1` WHERE `b` > ? 1 test 9556566adc0953fccd8e2e35019287ed SELECT `a` , `b` FROM `test` . `v1` 1 test fc937c99007b0976d19fb685b3bf9acc SELECT `b` , `a` FROM `test` . `v1` 1 test a73dca7a09f45de04f1f4588f0a4e19f 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 7f6c48fe072a231bc75d6d449978b9f5 CREATE VIEW `test` . `v1` AS SELECT * FROM `test` . `t1` 1 test c24db45ea4beed6ba2537ca6ea2d0484 DROP TABLE `test` . `v1` 1 test b69a5ddd08657692e23aa72d37dc15e0 EXPLAIN SELECT * FROM `test` . `v1` 2 test 8c76fc18fe1711607640be2906e38f58 EXPLAIN SELECT * FROM `test` . `v1` WHERE `a` = ? 2 test 9bedc57de65e2ac25d67fcb6ccadb427 EXPLAIN SELECT * FROM `test` . `v1` WHERE `b` > ? 2 test 0539bbfdb016341a22d32fecb12c9882 EXPLAIN SELECT `a` , `b` FROM `test` . `v1` 2 test 3368b44e9d8b8cfb13b58f97a255d77f EXPLAIN SELECT `b` , `a` FROM `test` . `v1` 2 test 2f619aeadc8bd993980ef9b4d12e4222 SELECT * FROM `test` . `v1` 2 test b9a44c024c9d79de76f2ebcd2f208c4c SELECT * FROM `test` . `v1` WHERE `a` = ? 2 test a3ccc4c3c79e853eaa17e3ceb7a24b30 SELECT * FROM `test` . `v1` WHERE `b` > ? 2 test 7b82ea9a7c1859f76abed712d2d4b14d SELECT SCHEMA_NAME , `DIGEST` , `DIGEST_TEXT` , `COUNT_STAR` FROM `performance_schema` . `events_statements_summary_by_digest` ORDER BY `DIGEST_TEXT` 1 test 9556566adc0953fccd8e2e35019287ed SELECT `a` , `b` FROM `test` . `v1` 2 test fc937c99007b0976d19fb685b3bf9acc SELECT `b` , `a` FROM `test` . `v1` 2 test a73dca7a09f45de04f1f4588f0a4e19f TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1 DROP VIEW test.v1; DROP TABLE test.t1;