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
Answers were Sorted based on User's Feedback
Answer / rameshganesan
Select (Case
When a = Least Then (select 'A'||CHR(10)||'='||CHR(10)||ListAgg(a,CHR(10)) Within Group(order by a) from Least_Col)
When b =Least Then (select 'B'||CHR(10)||'='||CHR(10)||ListAgg(b,CHR(10)) Within Group(order by b) from Least_Col)
Else (select 'C'||CHR(10)|| '='||CHR(10)||ListAgg(c,CHR(10)) Within Group(order by c) from Least_Col) end)ab
From (Select count(a) a,count(b) b,count(c) c,greatest(count(a),count(b),count(c)) Least From Least_Col);
Is This Answer Correct ? | 1 Yes | 0 No |
1. Display the post code and the purchase order number for each purchase order. Sort the output set by postcode.
Explain constraining triggers.
What are the attributes that are found in a cursor?
what is cartesian product?
What is E-R diagram ?
2 Answers CGI, Keane India Ltd,
How to call a stored function with parameters?
How many file formats are supported to export data?
How do I learn what codesets are available in oracle?
What do you mean by cdb and pdb in oracle 12c?
query optmization techniques and quwry analyser+projects+ppts
What is open database communication (odbc) in oracle?
How to invoke the data pump export utility?