How to define a procedure inside another procedure?
How to empty your oracle recycle bin?
Indexes in oracle ?
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How you find out version of installed workflow?
How to convert character types to numeric types?
what is the exact definition for pointer?
How do we get field details of a table?
How a tablespace is related to data files?
What is the difference between postgresql and oracle?
when do u go for hash partitioning?
1.how to extract the second highest salary from emp table having sal as a column which contains the salary of all employee of an organisation.
The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ================ 1 NULL 2 NULL 3 4 NULL 5 6 7 NULL NULL O/P C = 2 4 6
What is an external table?