sql 查询出字符串内有重复字母的答:--如果是字符型的,用以下语句 SELECT numberName FROM TABLE WHERE substr(numberName,1,1)=substr(numberName,2,1) OR substr(numberName,1,1)=substr(numberName,3,1) OR substr(numberName,1,1)=substr(numberName,4,1)OR substr(numberName,5,1)=substr(numberName,6,1) OR substr(...