Oracle RANGE分区表 HIGH_VALUE 获取

数据库人生2026-02-14 9:01

业务经常使用date，timestamp 列做RANGE分区的信息，但是 dba_tab_partitions 视图 HIGH_VALUE 列为 LONG类型，操作起来各种限制，网上深入搜索后发现使用 dbms_xmlgen.getXMLType 很方便，特记录一下，方便大家快速处理

bash 复制代码

with xml as (
   select dbms_xmlgen.getXMLType('select table_owner,table_name, partition_name, high_value
                                    from dba_tab_partitions t 
                                   where 1=1
                                     and t.table_owner = ''' || t.owner || ''' 
                                     and t.table_name = ''' || t.table_name || ''' ') as x
    from dba_part_tables t  
   where 1=1
     and t.partitioning_type = 'RANGE'
     --and t.interval is not null
     and t.owner=upper('SYS') 
     and t.table_name =upper('WRH$_FILESTATXS')
)
select extractvalue(rws.object_value, '/ROW/TABLE_OWNER') table_owner,
       extractvalue(rws.object_value, '/ROW/TABLE_NAME') TABLE_NAME,
       extractvalue(rws.object_value, '/ROW/PARTITION_NAME') PARTITION_NAME,
       substr(regexp_replace(replace(extractvalue(rws.object_value, '/ROW/HIGH_VALUE'),'HH24',''), '[^0-9]', ''),0,8) HIGH_VALUE,
       extractvalue(rws.object_value, '/ROW/HIGH_VALUE') HIGH_VALUE_DESC
  from XML X, 
       TABLE(XMLSEQUENCE(EXTRACT(X.X, '/ROWSET/ROW'))) rws

查询结果如下