Oracle分区表使用实例

Oracle分区表使用实例： create or replace procedure bl_partition is v_sql varchar(1024); v_count int; v_part

Oracle分区表使用实例：

create or replace procedure bl_partition is
v_sql varchar(1024);
v_count int;
v_partname varchar2(32);
v_startdate date;
v_enddate date := trunc(sysdate) + 1;
begin
v_sql := 'select count(*) from user_tables where table_name=''BL_TEST''';
execute immediate v_sql
into v_count;
if v_count = 0 then
v_sql := 'create table bl_test (period date,abcd varchar2(20)) nologging partition by range (period)
(partition pmax values less than (MAXVALUE) tablespace bl_test)';
execute immediate v_sql;
end if;
v_sql := 'select max(partition_name) from user_tab_partitions where table_name=''BL_TEST'' and partition_name<>''PMAX''';
execute immediate v_sql
into v_partname;
if v_partname is null then
v_startdate := trunc(sysdate) - 2;
else
v_startdate := to_date(substr(v_partname, 2), 'yyyymmdd');
end if;
while v_startdate v_startdate := v_startdate + 1;
v_partname := 'p' || to_char(v_startdate, 'yyyymmdd');
v_sql := 'alter table bl_test split partition pmax at (to_date(''' ||
to_char(v_startdate + 1, 'yyyyymmdd') ||
''',''yyyymmdd'')) into (partition ' || v_partname ||
',partition pmax)';
execute immediate v_sql;
end loop;
end bl_partition;