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This commit is contained in:
Oleksandr Byelkin
2022-01-25 11:13:39 +01:00
parent 0b116d160a
commit 157e66273b
4 changed files with 223 additions and 4 deletions
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mysql-test/suite/perfschema/t/digest_view.test Normal file
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# ----------------------------------------------------
# Tests for the performance schema statement Digests.
# ----------------------------------------------------
# Test case to show behavior of statements digest when
# using a view
--source include/not_embedded.inc
--source include/have_perfschema.inc
--source include/no_protocol.inc
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;
#
# test.v1 is a table.
# Every query here is different, and should have a different digest.
#
EXPLAIN SELECT * from test.v1;
EXPLAIN SELECT * from test.v1 where a = 1;
EXPLAIN SELECT * from test.v1 where b > 100;
EXPLAIN SELECT a, b from test.v1;
EXPLAIN SELECT b, a from test.v1;
SELECT * from test.v1;
SELECT * from test.v1 where a = 1;
SELECT * from test.v1 where b > 100;
SELECT a, b from test.v1;
SELECT b, a from test.v1;
--echo #
--echo # DIGESTS SEEN ON TABLE
--echo #
SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR
FROM performance_schema.events_statements_summary_by_digest
ORDER BY DIGEST_TEXT;
DROP TABLE test.v1;
CREATE VIEW test.v1 AS SELECT * FROM test.t1;
#
# test.v1 is now a view.
# the query digests should be unchanged.
#
EXPLAIN SELECT * from test.v1;
EXPLAIN SELECT * from test.v1 where a = 1;
EXPLAIN SELECT * from test.v1 where b > 100;
EXPLAIN SELECT a, b from test.v1;
EXPLAIN SELECT b, a from test.v1;
SELECT * from test.v1;
SELECT * from test.v1 where a = 1;
SELECT * from test.v1 where b > 100;
SELECT a, b from test.v1;
SELECT b, a from test.v1;
--echo #
--echo # DIGESTS SEEN ON VIEW
--echo #
SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR
FROM performance_schema.events_statements_summary_by_digest
ORDER BY DIGEST_TEXT;
DROP VIEW test.v1;
DROP TABLE test.t1;