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';
In the code by saying, we are asking SQL Server to keep all the records with Rank 1, which are not duplicates, and delete any other record. After executing this query in SQL Server Management Studio, you will end up with no duplicates in your table.To confirm that just run a simple query against your table.f you look at the data, there are considerable duplicates in it. John and Mark's names got repeated many times in the data. Now, let us write a query that uses the ROW NUMBER function and gives any duplicate values the rank of 2, 3 and so on.