Classify Example (Red::ResultAssociative)

use Red;

model Bla {
   has Int $.a is id;
   has Int $.b is column
}

my $*RED-DB = database "SQLite";

Bla.^create-table;

Bla.^create: :a($_), :b($_ * [1, 2, 3].pick) for ^100 + 1;

my $*RED-DEBUG = True;

say Bla.^all.classify({ .b / .a }).keys

Output

SQL : SELECT
   b / a as "data"
FROM
   bla
GROUP BY
   b / a
(1 2 3)