insert into basic_category (bc_basic_Id,bc_category_id) values (#{item.bcBasicId},#{item.bcCategoryId}) replace into basic_category (bc_basic_Id,bc_category_id) values (#{item.bcBasicId},#{item.bcCategoryId}) delete from basic_category where bc_basic_Id=#{bcBasicId} select * from basic_category where bc_basic_Id=#{bcBasicId} select bc_basic_id from ( select *,count(bc_basic_id) as cun from basic_category where bc_category_id in #{item} GROUP BY bc_basic_id ) as temp where cun=#{categoryIdsSize}; select count(bc_basic_id) from basic_category where bc_category_id in #{item} GROUP BY bc_basic_id