How to do this simple task in kdb? awk ‘!($1 in a){a[$0];print}’
See http://code.kx.com/wiki/Reference/BangSymbol#0N.21x
q)f:{0N!x}
q)f 1
1
1
q)f 2
2
2
q)f each 1 2 3
1
2
3
1 2 3
How to do this simple task in kdb? awk ‘!($1 in a){a[$0];print}’
See http://code.kx.com/wiki/Reference/BangSymbol#0N.21x
q)f:{0N!x}
q)f 1
1
1
q)f 2
2
2
q)f each 1 2 3
1
2
3
1 2 3