select * from catelog select * from catelog and catelogId= #{catelogId} select * from catelog where catelogId=${value} insert into catelog (catelogName,catelogMiaoshu) values (#{catelogName},#{catelogMiaoshu}); update catelog set catelogName=#{catelogName},catelogMiaoshu=#{catelogMiaoshu} where catelogId=#{catelogId} delete from catelog where catelogId=${value}