Question

Problem:
A row in my_table contains

1
2
3
3
4
4
4

I want to rearrange the row order to the following

4
4
4    
1
3
3
2

Is there any way I can perform this?

I have not written any code so far. ( I do not know how to begin)

Answer 1

Just use CASE in the ORDER BY – it’s much cleaner and easier to read.

...
ORDER BY CASE WHEN YourColumn = 4 then 0
              WHEN YourColumn = 2 then 1
              ELSE 2 END, yourcolumn

It’s also a bad idea to change the order of the rows since there is actually no inherent order in SQL – it’s all in the presentation layer, so use ORDER BY in your SELECTs to accomplish it.