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mysql> create table user(
    -> userid int(4) primary key not null auto_increment,
    -> username varchar(16) not null,
    -> userpassword varchar(32) not null
    -> );
create table log(
logid int(4) primary key not null auto_increment,
logtitle varchar(32) not null,
logcontent varchar(160) not null,
logtime datetime not null,
userip varchar(64) not null
);


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using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
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MYSQLÖÐµÄ constraint Óë CONSTRAINT

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alter table child_table_name
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references reference_table_name(reference_column_1);
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1.SET GLOBAL event_scheduler = ON;
2.show processlist;
3.´´½¨Ò»¸ö±í test Ö÷Òª×Ö¶Î no,name,sex,age
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5.´´½¨´æ´¢¹ý³Ìadd_age
drop procedure if exists add_age;
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create procedure add_age()
begin
  start transaction;
  update eventtest set age = age +1;
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