21 lines
447 B
Plaintext
21 lines
447 B
Plaintext
DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a INT PRIMARY KEY DEFAULT '0') ENGINE=xengine;
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SHOW COLUMNS IN t1;
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Field Type Null Key Default Extra
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a int(11) NO PRI 0
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INSERT INTO t1 (a) VALUES (1);
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SELECT a FROM t1;
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a
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1
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ALTER TABLE t1 ADD COLUMN b CHAR(8) DEFAULT '';
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SHOW COLUMNS IN t1;
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Field Type Null Key Default Extra
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a int(11) NO PRI 0
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b char(8) YES
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INSERT INTO t1 (b) VALUES ('a');
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SELECT a,b FROM t1 ORDER BY a,b;
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a b
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0 a
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1
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DROP TABLE t1;
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