46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
SET @transaction_isolation= @@global.transaction_isolation;
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SET GLOBAL TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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INSERT INTO cache_policies VALUES("cache_policy", "innodb_only",
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"innodb_only", "innodb_only", "innodb_only");
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INSERT INTO config_options VALUES("separator", "|");
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INSERT INTO containers VALUES ("desc_t1", "test", "t1",
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"c1", "c2", "c3", "c4", "c5", "PRIMARY");
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USE test;
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connect con1,localhost,root,,;
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (c1 VARCHAR(32),
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c2 VARCHAR(1024),
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c3 INT, c4 BIGINT UNSIGNED, c5 INT, primary key(c1))
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ENGINE = INNODB;
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INSERT INTO t1 VALUES ('D', 'Darmstadt', 0, 0, 0);
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INSTALL PLUGIN daemon_memcached SONAME 'libmemcached.so';
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SELECT c1,c2 FROM t1;
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c1 c2
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D Darmstadt
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SELECT c1,c2 FROM t1;
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c1 c2
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D Darmstadt
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ALTER TABLE test.t1 ADD COLUMN j JSON;
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CREATE PROCEDURE alter_column()
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BEGIN
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SELECT SLEEP(10);
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ALTER TABLE test.t1 ADD COLUMN foo varchar(200) AS (j->'$.foo') VIRTUAL;
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END//
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connection con1;
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set session lock_wait_timeout=1;
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call alter_column();;
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connection default;
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Here are the memcached results with E:
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Darmstadt
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connection con1;
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SLEEP(10)
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0
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection default;
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disconnect con1;
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drop procedure alter_column;
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DROP TABLE t1;
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UNINSTALL PLUGIN daemon_memcached;
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DROP DATABASE innodb_memcache;
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SET @@global.transaction_isolation= @transaction_isolation;
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