谢谢你的回答,还能帮我想想吗?作者: myad 时间: 2007-1-15
delete c1.title from tables where (select c1.title c2.title from tables as c1,tables as c2 where c1.title=c2.title)作者: ahxiao 时间: 2007-1-15
新建一个表,然后把旧表数据无重复COPY过去。
INSERT INTO "tables1" SELECT * FROM "tables" GROUP BY title