之前在工作中经常遇到添加分区子分区的情况，而且很多子分区没有通过模版创建，自定义创建的，不方便维护和扩展。
所以写了个统一的存储过程进行处理，在这里分享一下。
create or replace procedure p_test_gy(v_datacycle_id varchar2, --添加分区的上限值
v_entity_owner varchar2,
v_entity_name varchar2,
v_retcode out varchar2,
v_retinfo out varchar2) is
v_cnt1 number; --实体检测
v_cnt2 number; --分区是否存在检测
v_cnt3 number; --模板子分区是否存在检测
v_part_type varchar2(30); --分区类型
v_subpart_type varchar2(30); --子分区类型
v_part_value_max varchar2(30); --分区最大值
v_part_style varchar2(30); --分区命名格式
v_part_value varchar2(30); --分区值变量
v_sql varchar2(4000); --动态执行SQL
v_sub_template varchar2(4000); --调整模板子分区
v_high_value long; --子分区值变量
v_subpart_value varchar2(30); --子分区值变量
/*v_pkg
v_procname */
begin
/*--插入日志部分
p_insert_log(v_acct_month, v_pkg, v_procname, v_prov_id, sysdate, '');*/
--检测输入参数是否有误
select count(0)
into v_cnt1
from sys.dba_objects
where owner = v_entity_owner
and object_name = v_entity_name
and object_type = 'TABLE';
if v_cnt1 = 0 then
v_retcode := 'FAIL';
v_retinfo := '目标表信息输入有误';
else
--检测目标表有无分区
select count(0)
into v_cnt2
from sys.dba_part_tables t
where t.owner = v_entity_owner
and t.table_name = v_entity_name;
if v_cnt2 = 0 then
v_retcode := 'SUCCESS';
v_retinfo := '目标表无分区';
else
--检测分区是否已存在
select regexp_replace(max(t.partition_name), '[^0-9]', ''),
regexp_replace(max(t.partition_name), '[0-9]', '')
into v_part_value_max, v_part_style
from sys.dba_tab_partitions t
where t.table_owner = v_entity_owner
and t.table_name = v_entity_name;
select partitioning_type, subpartitioning_type
into v_part_type, v_subpart_type
from sys.dba_part_tables t
where t.owner = v_entity_owner
and t.table_name = v_entity_name;
--分区已存在&分区是LIST/HASH分区
if v_part_value_max >= v_datacycle_id OR v_part_type <> 'RANGE' then
v_retcode := 'SUCCESS';
v_retinfo := '分区已存在';
else
select count(0)
into v_cnt3
from sys.dba_subpartition_templates
where table_name = v_entity_name
and user_name = v_entity_owner;
--无子分区&有子分区且为模板子分区
if v_part_type = 'RANGE' AND
((v_subpart_type = 'LIST' AND v_cnt3 <> 0) OR
nvl(v_subpart_type, '**') = 'NONE') then
v_part_value := to_char(add_months(to_date(v_part_value_max,
'yyyymm'),
1),
'yyyymm');
while v_part_value <= v_datacycle_id loop
v_sql := 'alter table ' || v_entity_owner || '.' ||
v_entity_name || ' add partition ' || v_part_style ||
v_part_value || '
values less than (''' ||
to_char(add_months(to_date(v_part_value, 'yyyymm'), 1),
'yyyymm') || ''') tablespace ';
--日志检索
/*dbms_output.put_line(v_sql);*/
--需要分配分区(或者建表设置默认表空间)
execute immediate v_sql;
v_part_value := to_char(add_months(to_date(v_part_value,
'yyyymm'),
1),
'yyyymm');
end loop;
v_retcode := 'SUCCESS';
v_retinfo := '成功';
else
/*--顺序不太好看
select
rtrim(wmsys.wm_concat(' subpartition ' || substr(subpartition_name,length(partition_name)+2) || ' values ( ''' ||
regexp_replace(substr(subpartition_name, length(partition_name)+2),'[^0-9]','') || ''' ) '),',') into v_sub_template
from sys.dba_tab_subpartitions
where table_owner = v_entity_owner
and partition_name = v_part_value_max
and table_name = v_entity_name;*/
--有子分区且非模板子分区
v_sub_template := 'alter table ' || v_entity_owner || '.' ||
v_entity_name || '
set subpartition template(';
--''' ||regexp_replace(substr(subpartition_name,length(partition_name) + 2),'[^0-9]','') || '''
for t in (select /*+parallel(sub,4)*/*
from sys.dba_tab_subpartitions sub
where table_owner = v_entity_owner
and partition_name = v_part_style || v_part_value_max
and table_name = v_entity_name
order by length(regexp_replace(subpartition_name, '[0-9]', '')),subpartition_name) loop
v_high_value:=t.high_value;
v_subpart_value:=substr(v_high_value,1,4000);
/*if v_subpart_value= 'DEFAULT' then
v_subpart_value:='''DEFAULT''';
end if;*/
v_sub_template := v_sub_template ||' subpartition ' ||
substr(t.subpartition_name,
length(t.partition_name) + 2) ||
' values ( '||v_subpart_value||' ) ,' ;
end loop;
--日志检索
dbms_output.put_line(rtrim(v_sub_template, ',') || ')');
insert into dm_check_log
select rtrim(v_sub_template, ',') || ')',
v_datacycle_id,
sysdate
from dual;
commit;
execute immediate rtrim(v_sub_template, ',') || ')';
v_part_value := to_char(add_months(to_date(v_part_value_max,
'yyyymm'),
1),
'yyyymm');
while v_part_value <= v_datacycle_id loop
v_sql := 'alter table ' || v_entity_owner || '.' ||
v_entity_name || ' add partition ' || v_part_style ||
v_part_value || '
values less than (''' ||
to_char(add_months(to_date(v_part_value, 'yyyymm'), 1),
'yyyymm') || ''') tablespace ';
/*dbms_output.put_line(v_sql);*/
execute immediate v_sql;
--需要分配分区(或者建表设置默认表空间)
v_part_value := to_char(add_months(to_date(v_part_value,
'yyyymm'),
1),
'yyyymm');
end loop;
v_retcode := 'SUCCESS';
v_retinfo := '成功';
end if;
end if;
end if;
end if;
end;