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SQL如何获取不重复的数据,去重后的数据行数? sql筛选不重复数据
SQL筛选不重复数据的案例 delet from 表名where PRP_Numbernot int(select PRP_Number,count(*)from 表名where gourp by PRP_Numberhaving coun...
SQL筛选不重复数据的案例 delet from 表名where PRP_Numbernot int(select PRP_Number,count(*)from 表名where gourp by PRP_Numberhaving coun...