2024-05-28 09:08:51 +04:00
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ALTER DATABASE test CHARACTER SET latin1 COLLATE latin1_swedish_ci;
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2019-04-19 13:22:01 +03:00
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CREATE TABLE t1 (pk INT AUTO_INCREMENT PRIMARY KEY, a varchar(30000), UNIQUE (a)) ENGINE=innodb;
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INSERT INTO t1 (a) VALUES (20),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL);
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SELECT * FROM t1 WHERE a BETWEEN '1' AND '100';
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pk a
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DROP TABLE t1;
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2019-04-19 13:20:15 +03:00
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CREATE TABLE t2 (n BLOB, UNIQUE(n));
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INSERT INTO t2 VALUES (1);
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DELETE FROM t2 WHERE n = 1;
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DROP TABLE t2;
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2024-05-28 09:08:51 +04:00
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ALTER DATABASE test CHARACTER SET utf8mb4 COLLATE utf8mb4_uca1400_ai_ci;
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