例如,[row 1]和[row 3]在A列和B列上有重复值,我需要删除[row 1],任何人都知道如何在PostgreSQL中做? (或其他SQL服务器..)
[column A] [column B]
[row 1] "/100/" "0.gif"
[row 2] "/101/" "0.gif"
[row 3] "/100/" "0.gif"
[row 4] "/100/" "1.gif"
这个问题类似于Delete duplicated old rows and keep only latest mysql,但那里的代码在Postgres中没有用(9.1.9)