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[client]
default_character_set=gbk
[mysqld]
default_character_set=gbk
 
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11 advanced MySQL questions

 

Explain MySQL architecture
. - The front layer
takes care of network connections and security authentications, the
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off to the storage engine. A storage engine could be either a default
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mysql alter Óï¾äÓ÷¨,Ìí¼Ó¡¢Ð޸ġ¢É¾³ý×Ö¶Î

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alter table tabelname add new_field_id int(5) unsigned default 0 not null auto_increment ,add primary key (new_field_id);
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alter table t2 add d timestamp;
alter table infos add ex tinyint not null default '0';
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alter table t2 drop column c;
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