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325c6bdf3d
Reasons: - The cache will at some point store intermediate results as opposed to only query results. We should change the terminology now without having to worry about backward compat. - Equivalent caches in MySQL (1) and Starrocks (2) are called "query cache". - The new name is ca. 13.8% more catchy. (1) https://dev.mysql.com/doc/refman/5.6/en/query-cache.html (2) https://docs.starrocks.io/en-us/2.5/using_starrocks/query_cache
69 lines
2.1 KiB
SQL
69 lines
2.1 KiB
SQL
-- Tags: no-parallel
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-- Tag no-parallel: Messes with internal cache
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SET allow_experimental_query_cache = true;
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SYSTEM DROP QUERY CACHE;
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DROP TABLE IF EXISTS eligible_test;
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DROP TABLE IF EXISTS eligible_test2;
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-- enable query cache session-wide but also force it individually in each of below statements
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SET use_query_cache = true;
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-- check that SELECT statements create entries in the query cache ...
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SELECT 1 SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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SYSTEM DROP QUERY CACHE;
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-- ... and all other statements also should not create entries:
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-- CREATE
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CREATE TABLE eligible_test (a String) ENGINE=MergeTree ORDER BY a; -- SETTINGS use_query_cache = true; -- SETTINGS rejected as unknown
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SELECT COUNT(*) FROM system.query_cache;
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-- ALTER
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ALTER TABLE eligible_test ADD COLUMN b String SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- INSERT
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INSERT INTO eligible_test VALUES('a', 'b'); -- SETTINGS use_query_cache = true; -- SETTINGS rejected as unknown
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SELECT COUNT(*) FROM system.query_cache;
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INSERT INTO eligible_test SELECT * FROM eligible_test SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- SHOW
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SHOW TABLES SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- CHECK
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CHECK TABLE eligible_test SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- DESCRIBE
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DESCRIBE TABLE eligible_test SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- EXISTS
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EXISTS TABLE eligible_test SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- KILL
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KILL QUERY WHERE query_id='3-857d-4a57-9ee0-3c7da5d60a90' SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- OPTIMIZE
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OPTIMIZE TABLE eligible_test FINAL SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- TRUNCATE
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TRUNCATE TABLE eligible_test SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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-- RENAME
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RENAME TABLE eligible_test TO eligible_test2 SETTINGS use_query_cache = true;
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SELECT COUNT(*) FROM system.query_cache;
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SYSTEM DROP QUERY CACHE;
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DROP TABLE eligible_test2;
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