Operators

Arithmetic

Operator	Description	Example
+	Addition	price + tax
-	Subtraction	revenue - cost
*	Multiplication	price * quantity
/	Division	total / count
%	Modulo (remainder)	id % 2

Comparison

Operator	Description	Example
>	Greater than	sales > 1000
<	Less than	age < 18
>=	Greater than or equal	score >= 90
<=	Less than or equal	price <= 100
==	Equal	status == "active"
!=	Not equal	region != "Unknown"

Logical

Operator	Description	Example
and	Logical AND	sales > 1000 and region == "North"
or	Logical OR	status == "pending" or status == "review"
not	Logical NOT	not is_deleted

Special

Operator	Description	Example
? :	Conditional (ternary)	profit > 0 ? "Gain" : "Loss"
??	Null/error coalescing	discount ?? 0

Note on ??: The null coalescing operator treats both null and conversion errors as "missing". For example, price ?? 0 returns 0 when price is null OR contains a conversion error.

Error propagation

Conversion errors propagate through arithmetic, comparison, and logical operators. If either operand is an error, the result is an error. Use is_error(value) to detect errors, ?? or coalesce() to provide fallbacks.