SQLiteDatabase db=dbHelper.getWritableDatabase()
db.delete("record","pulse=?and dia_pre=?",new String[]{record.get_pulse(),record.get_dia_pre()})//删除所有pulse等于给定值并且dia_pre等于给定值的记录
Cursor cursor=db.query("record",null,"sys_pre&gt?and dia_pre&lt?",new String[]{"120","85"},null,null,null)//多条件查询记得String是数组
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