# Pastebin 0bGGkYTb
➜  Red git:(master) raku -I. -MRed -e '

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


red-defaults "SQLite";
Bla.^create-table;
my $*RED-DEBUG = True;

.say for Bla.^all.map: { .a // .b }          
'
SQL : SELECT
   CASE 
      WHEN bla.a IS NULL THEN bla.b
   ELSE bla.a
   END
    as "data_1"
FROM
   bla
BIND: []