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<title>Re: 有关group by一问?</title>
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<h1>Re: 有关group by一问?</h1>
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Posted by JOB on June 22, 1999 at 11:48:59:<p>
In Reply to: <a href="14471.html">有关group by一问?</a> posted by kkcheung on June 21, 1999 at 23:34:06:<p>
: select a,b,c,d from .... where .... group by ....<br>: 假设 a,b 是文字串,c及d是数字.<p>: 是否一定要group by 所有文字串栏位,例如 group by a,b or group by b,a<br>: 是否在group by 的select句子中,数字栏位一定要sum(加总)?<p>你 GROUP BY 不是为了加总是为了什么?<br>
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