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show databases;
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show processlist;
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show columns from table_name from database_name; »òshow columns from
database_name.table_name;
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show grants for user_name@localhost;
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show index from table_name;
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show status;
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show variables;
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show privileges;
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show create database database_name;
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show create table table_name;
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show engies;
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show innodb status;
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show logs;
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