oracle 将行转换为列

Question

my question is about transposing rows into columns. I have got table T1(c1,c2,c3,c4,c5) columns with datatype varchar2, i want to transpose the rows obtained, example:

select * from T1

gives

      c1  c2  c3  c4  c5
row1  1   2   3   4   5
row2  A   B   C   D   E
....
rown  U   V   W   X   Y

the result expected is

C1 1 A......U
C2 2 B......V     
C3 3 C......W
C4 4 D......X
C5 5 E......Y

all rows in different columns(table contains only 10-15 rows) i have tried the following query, but it isnt giving expected result.

  Select RN,value 
    From (
           Select x.*,row_number () 
             Over ( Order By c1) rn From T1 x) 
          Unpivot (value For value_type In (C1,c2,c3,c4,c5)
         ); 

Answer 1

So you only need to pivot data again:

^{dbfiddle demo}

select * 
  from (
      select rn, val, col
        from (select t1.*, row_number() over (order by c1) rn from t1) 
        unpivot (val for col in (c1, c2, c3, c4, c5))) 
  pivot (max(val) for rn in (1, 2, 3, 4)) 
  order by col

You have to know how many rows are in t1 and list them all in pivot in clause (1, 2, 3, 4) alternatively adding aliases for each column.