You're right. avgclen should be 7. As I said I just took the example from my paper. I changed the density (so some fictitious value) but forgot to change avgclen. The flags value I think I took from dbms_stats.set_column_stats calls created by export. I suppose you could just let it default. The flag(s) correspond to GLOBAL_STATS and USER_STATS of dba_tab_columns and thus can take on the values 0, 1, 2, and 3. (binary 00, 01, 10, 11).
At 02:11 PM 12/14/2006, Milen Kulev wrote:
Hi Wolfgang, Thank you very much for your reply/Christmas present ;)I have noticed that you are always using (..., 2,2) for the last two paramemers of DBMS_STATS.SET_COLUMN_STATS(avgclen and flags ) Shouldn't in this case avgclen to be set to 7 (for DATE type) ? avgclen should play a role somewhere in the CBO calculations, I think ... And can "flags" get any other value other than 2 (asking just of curiosity) ? Best Regards. Milen
Regards Wolfgang Breitling Centrex Consulting Corporationwww.centrexcc.com
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