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1 ÕÅÈý ÄÐ 20
2 ÍõÎå ÄÐ 22
3 ÀîËÄ ÄÐ 25
4 ³Â´ó ÄÐ 19

ÏÖÔÚÎÒ°Ñ autoid=3 ºÍ autoid=4 µÄÁ½Ìõ¼Ç¼ɾ³ý
È»ºóÎÒÔÙ²åÈëÒ»ÌõÊý¾Ý,ÀýÈç:

insert into userinfo(autoid,username,sex,age) values('null','´º¸ç','ÄÐ','27');

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mysql> select auto_increment from information_schema.tables where table_name="te
st";
+----------------+
| auto_increment |
+----------------+
| 4 |
+----------------+
1 row in set (0.02 sec)

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<form action="" method="post" onSubmit="return aa();" >
<body onload="setup()">
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SQL code:

--½¨Á¢ÁÙʱ±í£¬ÎÊÌâ1
create TEMPORARY table tmp_table(s1 int,s2 varchar(30))
--select * from tmp_table
--½¨Á¢ÁÙʱ±äÁ¿£¬ÎÊÌâ2
set @v=0;
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while @v<20 do
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