Hi! I need to "de-normalize" a field into a coma separated field but i don´t know how can i do it:
For example, this input:
f1 f2 v
----------------
a a 1
a a 2
a b 1
c d 1
c d 2
c d 3
Into this output:
f1 f2 v
----------------
a a 1,2
a b 1
c d 1,2,3
¿Can anybody help me?
Thanks in advance!
For example, this input:
f1 f2 v
----------------
a a 1
a a 2
a b 1
c d 1
c d 2
c d 3
Into this output:
f1 f2 v
----------------
a a 1,2
a b 1
c d 1,2,3
¿Can anybody help me?
Thanks in advance!