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category_id int(10) unsigned DEFAULT '1' NOT NULL,
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PRIMARY KEY (category_id)
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<?php
/**
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* $db = new DB('localhost','root','password','database','utf8');
* $db->debug = true;
* $db->primaryKeys = array (
* 'table_1 ......
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create procedure
sp_name()
begin
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drop procedure ......
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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';
//ɾ³ýÁÐ
alter table t2 drop column c;
//ÖØÃüÃûÁÐ
......