MD5加密 import android.annotation.SuppressLint; import java.security.MessageDigest; public class MD5 { @SuppressLint("DefaultLocale") public static String hex(byte[] array) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < array.lengt…
delete from 表名 where id not in (select d.id from (SELECT id FROM 表名 GROUP BY c1,c2,c3,c4)as d) #去重复,把url重复,且区为空的中去掉.select * from TABLE where url in (select u.url from (select * from TABLE where id not in (select d.id from (SELECT id FROM TABLE GROUP…