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66 lines
2 KiB
Text
66 lines
2 KiB
Text
FLUSH TABLES;
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#
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# MDEV-11369: Instant ADD COLUMN for InnoDB
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# MDEV-15562: Instant DROP COLUMN or changing the order of columns
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#
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connect to_be_killed, localhost, root;
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SET @old_instant=
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(SELECT variable_value FROM information_schema.global_status
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WHERE variable_name = 'innodb_instant_alter_column');
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CREATE TABLE empty (id INT PRIMARY KEY, c2 INT UNIQUE) ENGINE=InnoDB;
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CREATE TABLE once LIKE empty;
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CREATE TABLE twice LIKE empty;
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CREATE TABLE thrice LIKE empty;
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INSERT INTO once SET id=1,c2=1;
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INSERT INTO twice SET id=1,c2=1;
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INSERT INTO thrice SET id=1,c2=1;
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ALTER TABLE empty ADD COLUMN (d1 INT DEFAULT 15);
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ALTER TABLE once ADD COLUMN (d1 INT DEFAULT 20);
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ALTER TABLE twice ADD COLUMN (d1 INT DEFAULT 20);
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ALTER TABLE thrice ADD COLUMN (d1 INT DEFAULT 20);
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ALTER TABLE twice ADD COLUMN
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(d2 INT NOT NULL DEFAULT 10,
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d3 VARCHAR(15) NOT NULL DEFAULT 'var och en char');
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ALTER TABLE thrice ADD COLUMN
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(d2 INT NOT NULL DEFAULT 10,
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d3 TEXT NOT NULL DEFAULT 'con');
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ALTER TABLE thrice DROP c2, DROP d3, CHANGE d2 d3 INT NOT NULL FIRST;
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SELECT variable_value-@old_instant instants
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FROM information_schema.global_status
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WHERE variable_name = 'innodb_instant_alter_column';
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instants
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7
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BEGIN;
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INSERT INTO empty set id=0,c2=42;
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UPDATE once set c2=c2+1;
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UPDATE twice set c2=c2+1;
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UPDATE thrice set d3=d3+1;
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INSERT INTO twice SET id=2,c2=0,d3='';
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INSERT INTO thrice SET id=2,d3=0;
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DELETE FROM empty;
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DELETE FROM once;
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DELETE FROM twice;
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DELETE FROM thrice;
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connection default;
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SET GLOBAL innodb_flush_log_at_trx_commit=1;
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CREATE TABLE foo(a INT PRIMARY KEY) ENGINE=InnoDB;
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# Kill the server
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disconnect to_be_killed;
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# restart
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SET @saved_frequency= @@GLOBAL.innodb_purge_rseg_truncate_frequency;
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SET GLOBAL innodb_purge_rseg_truncate_frequency=1;
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DROP TABLE foo;
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InnoDB 0 transactions not purged
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SET GLOBAL innodb_purge_rseg_truncate_frequency=@saved_frequency;
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SELECT * FROM empty;
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id c2 d1
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SELECT * FROM once;
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id c2 d1
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1 1 20
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SELECT * FROM twice;
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id c2 d1 d2 d3
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1 1 20 10 var och en char
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SELECT * FROM thrice;
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d3 id d1
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10 1 20
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DROP TABLE empty, once, twice, thrice;
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