摘要:
正序: select t1.business_title,t1.create_at from t_business_info t1 order by convert(t1.business_title using gbk) asc 倒序 select t1.business_title,t1.cre 阅读全文
摘要:
import java.util.ArrayList; import java.util.List; import java.util.Objects; import java.util.stream.Collectors; public class TestFilter { public stat 阅读全文
摘要:
业务需求:电话号码相同的,根据时间取最新一条数据 select * from b_guest_info a where create_at = (select max(create_at) from b_guest_info b where a.mobile = b.mobile) order by 阅读全文