Oracle Statistics Global vs Partition

Question

Oracle 9.2.0.8
Solaris 9
I have a partitioned table. I have statistics on each of the partitions, but no global stats on the table. If i want to generate GLOBAL stats with dbms_stats and with GRANULARITY=GLOBAL... will I lose the statistics on the partitions?? I would guess no, since dbms_stats has a explicit delete option.
Thanks in advance.

Answer 1

Can you post sample to show that DBMS_STATS not collecting global stats by default?
By default DBMS_STATS will collect both global and partition stats.
Sample,
SYS@etest> select TABLE_NAME, NUM_ROWS from DBA_TABLES where table_name='TEST' and owner='SYS'
SYS@etest> /
TABLE_NAME                       NUM_ROWS
TEST                               
SYS@etest> select TABLE_NAME,PARTITION_NAME,NUM_ROWS from DBA_TAB_PARTITIONS where table_name='TEST' and table_owner='SYS';
TABLE_NAME                     PARTITION_NAME                   NUM_ROWS
TEST                           P1
TEST                           P2
TEST                           P3
SYS@etest> exec dbms_stats.gather_table_stats('SYS','TEST')
PL/SQL procedure successfully completed.
SYS@etest> select TABLE_NAME,PARTITION_NAME,NUM_ROWS from DBA_TAB_PARTITIONS where table_name='TEST' and table_owner='SYS'
  2  /
TABLE_NAME                     PARTITION_NAME                   NUM_ROWS
TEST                           P1                                   1942
TEST                           P2                                    943
TEST                           P3                                   8789
SYS@etest> select TABLE_NAME, NUM_ROWS from DBA_TABLES where table_name='TEST' and owner='SYS'
SYS@etest> /
TABLE_NAME                       NUM_ROWS
TEST                                11674