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</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2F'>mariadb-11.7.2</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fmysql-test%2F'>mysql-test</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fmysql-test%2Fmain%2F'>main</a>/</p><hr><h3>✏️ Editing: alter_table_trans.result</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>drop table if exists t1,t2;
CREATE TABLE t1 (a INT, INDEX(a)) engine=innodb;
ALTER TABLE t1 RENAME TO t2, DISABLE KEYS;
Warnings:
Note	1031	Storage engine InnoDB of the table `test`.`t1` doesn&#039;t have this option
DROP TABLE t2;
CREATE TABLE t1 (
col4 text NOT NULL,
col2 int(11) NOT NULL DEFAULT &#039;0&#039;,
col3 int(11) DEFAULT NULL,
extra int(11) DEFAULT NULL,
KEY idx (col4(10))
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
insert t1 values (repeat(&#039;1&#039;, 8193),3,1,1);
insert t1 values (repeat(&#039;3&#039;, 8193),3,1,1);
ALTER TABLE t1 ADD PRIMARY KEY (col4(10)) , ADD UNIQUE KEY uidx (col3);
ERROR 23000: Duplicate entry &#039;1&#039; for key &#039;uidx&#039;
DROP TABLE t1;
CREATE TABLE t1 (a INT) ENGINE = InnoDB;
INSERT INTO t1 VALUES (2);
ALTER TABLE t1 ADD PRIMARY KEY (a);
ALTER TABLE t1 DROP PRIMARY KEY;
INSERT INTO t1 VALUES (2);
ALTER TABLE t1 ADD PRIMARY KEY (a);
ERROR 23000: Duplicate entry &#039;2&#039; for key &#039;PRIMARY&#039;
DROP TABLE t1;
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