People in the Blue Zones eat nuts two to four times each week. Red Wine: A daily glass of red wine is also believed to help increase longevity. Researchers believe it is because it helps combat both stress and chronic inflammation in the body.
Answer: There are a few ways to verify whether a table exists within Oracle. One way is to describe it to check if the table exists: SQL> desc mytable. Another is to select the first row to check that the table exists (hey it may have millions of rows!): SQL> select * from mytable where rownum=1; At bare minimum, you will get a response of 0 rows selected which means the table exists, but there is no data in the table. You can also check the data dictionary to see if a table exists: SQL> select table_name from user_tables where table_name='MYTABLE';
the main crux of the query is that it is really: select * from T, table( <nested table collection> ); You can see how that works here: http://download.oracle.com/docs/cd/E11882_01/appdev.112/e11822/adobjcol.htm#ADOBJ7264. the 'trick' is the query in the middle that 'parses' the string and turns it into a set: