This is the variable where Red stores the database connection.

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

Its usage will be substituted for red-do() and/or red-defaults()

When this variable is set to a true-ish value Red will print the generated SQLs to $*OUT.

my $*RED-DEBUG = True;
Model.^create-table;

Output

SQL : CREATE TABLE model(
   id integer NOT NULL primary key 
)
BIND: []

When this variable is set to a true-ish value Red will print the response from the SQL query to $*OUT.

my $*RED-DEBUG-RESPONSE = True;
Model.^create: :42id

Output

{id => 42}

When this variable is set to a true-ish value Red will print the generated AST to $*OUT.

my $*RED-DEBUG-AST = True;
Model.^create: :42id

Output

Red::AST::Insert:
    id

When this variable is set to a true-ish value Red will add comments about where in the code it was called on the SQL query.

my $*RED-COMMENT-SQL = True;
Model.^create: :42id