我有一张表: +----------+----------------+ | no | Fname | +----------+----------------+ | 1 | a1 | | 1 | a2 | | 1 | a3 | | 2 | b1 | | 2 | b2 | | 2 | b3 | | 3 | c1 | | 3 | c2 | | 3 | c3 | +----------+----------------+ 现在要改变成如下: +----------+----------------+ | no | Fname | +----------+----------------+ | 1 | a1a2a3 | | 2 | b1b2b3 | | 3 | c1c2c3 | +----------+----------------+ 强调一下,是改变不是查询(也就是直接改变原表或查询后用新表替换旧表)请教应如何写SQL语句。 急盼答案。
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