Orcle的递归取值和分组内排序

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1、递归取值

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 SELECT t8.vccustmoercode
   FROM Tbcustomervirtual t8
 CONNECT BY t8.iparentid = PRIOR t8.icustomervirtual
  START WITH t8.icustomervirtual = 1

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2、分组内排序

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select Imaterielinfoid,
                   Occurrednumber as qichu,
                   0 as shouru,
                   0 as zhichu,
                   0 as qimo
              from (select Imaterielinfoid,
                           istorehouseinfoid,
                           Occurrednumber,
                           row_number() over(partition by Imaterielinfoid, istorehouseinfoid order by dtLog desc, Ilogstorehouseid desc) id
                      from Tb_Logstorehouse t1
                     where t1.istorehouseinfoid = iStorehouseinfo
                       and t1.dtlog < dtStart)
             where id <= 1