Query

Queries provide a controlled way to retrieve data in Rell.

Queries have the following characteristics:

• Can't modify the data in the database (compile-time verification)
• Must return a value
• If the return type isn't explicitly specified, it's implicitly deducted
• Parameter types and return types must be GTV-compatible

Short form

Compact syntax for straightforward queries:

query q(x: integer): integer = x * x;

Full form

More explicit syntax with a return statement:

query q(x: integer): integer {
    return x * x;
}