SQL: Is there a possibility to convert numbers (1,2,3,4…) to letters (A,B,C,D…)

Question

Is there a possibility to obtain letters (like A,B) instead of numbers (1,2) e.g. as a result of Dense_Rank function call(in MS Sql) ?

Answer 1

hint: try this in your SQL Enterprise manager

  select char(65), char(66), char(67)

a full solution, for ranks up to 17,500 (or three letters, up to ZZZ) is:

select 
    case When rnk < 703 Then ''
 else Char(64 + ((rnk-26) / 26 / 26)) End +
    case When rnk < 27 Then '' 
   When rnk < 703 Then Char(64 + ((rnk-1)/ 26))
 else Char(65 + ((rnk-1)% 702 / 26)) End +
    Char(65 + ((rnk - 1) % 26))  
from (select Dense_Rank() 
     OVER (ORDER BY T.Sequence) rnk
      From YourTable t) z