删除[field]字段内容重复的数据,[table]表名,[field]字段名
DELETE FROM [table] WHERE [id] NOT IN (SELECT MIN([id]) FROM [B_SensitiveWord] GROUP BY [field] Having Count(*)>1 UNION SELECT MIN([id]) FROM [table] GROUP BY [field] Having Count(*)=1)
保留[id]最小的数据,删除其他重复的数据
备注:[id]字段为int类型,可计算